In tissues of plants sampled from across the population, search for increased amounts of PR protein bacterial pathogen in mRNA transcripts.
Which plant cells are examples of sink and source cells?Sources: Green stems, full leaves, and photosynthetic tissues. Storage organs that are emptying their stockpiles - storage tissues in seeds that are germination - tap tubers or roots at the beginning of the growth session. Sinks: Growing or absorbing mineral ions from the soil utilizing energy from cell respiration.
What evolutionary benefit might a plant experience if it uses double fertilization rather than just one?Instead of a single dose, the zygote receives two doses of genetic material. By only providing a food source for zygotes once they successfully develop, the plant is able to conserve energy.
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True or false? Usually, people consider only one property when choosing a material.
Answer: False
hope that help
Consider two planets that have the same mass but are very different in size. Which statement describes the gravitational pull that an object would experience on the surface on each planet?(1 point) Responses The object would experience a greater gravitational pull on the smaller planet. The object would experience a greater gravitational pull on the smaller planet. The object would experience a much greater gravitational pull on the larger planet. The object would experience a much greater gravitational pull on the larger planet. The object would experience only a slightly greater gravitational pull on the larger planet. The object would experience only a slightly greater gravitational pull on the larger planet. The object would experience the same gravitational pull on each planet. The object would experience the same gravitational pull on each planet.
The statement that describes the gravitational pull that an object would experience on the surface on each planet is the object would experience a greater gravitational pull on the smaller planet. The correct option is A.
What is gravitational pull?The attraction between any two objects is caused by gravity. Gravity is inversely proportional to the square of the distance between things and directly proportional to their mass. Inversely proportional to the square of the distance between the items and directly related to their mass.
The Greek letter g stands for the Earth's gravity, which is the acceleration that objects undergo due to the combined effects of gravity and centrifugal force.
Therefore, the correct option is A.
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You seal a 1 lb plant in a large container with 10 lb of soil and 1 lb of water, you unseal it a month later and take the weight again, you find the plant is now 7 pounds, the soil is 10 lb, and water is 0.5 lb. define the law of conservation of matter, with this law in mind, where do you think that the plant gained most of its new weight.
The plant could have only gained most of its weight from the water and the atmosphere within the container by photosynthesis.
What is the law of conservation of matter?The law of conservation of matter states that matter is conserved in all circumstances. They can neither be created nor destroyed but their forms can change.
With this in mind, we now know that it is not possible for the plant to have gained its weight without explanations. 1 lb plant, 10 lb soil, and 1 lb water were all sealed in a large container. The only way the plant could have gained its weight was from the soil, the water, and or the atmosphere within the container.
After a month, the weight of the soil remains 10 lb. Thus, it is now sure that the plant did not gain any of its weight from the soil. The water is now 0.5 lb. This means that the plant has gained 0.5 lb from the water while the remaining weight gained by the plant can be traced to the atmosphere within the container.
This is explainable if the plant photosynthesized while sealed in the container. During photosynthesis, the plant would have gained more matter as a result of fixing carbon dioxide in the atmophere within the container into carbonhydrate with the help of water.
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FILL IN THE BLANK. small amphipathic ____________ are the most abundant molecules in a membrane.
Small amphipathic phospholipids are the most abundant molecules in a membrane.
The plasma membrane, often known as the cell membrane, protects the cell. It also maintains a consistent environment within the cell. And that membrane serves various purposes. One role is to transport nutrients into the cell, while the other is to transport toxic substances out.
The plasma membrane is the cell's and its organelles' outermost envelope-like membrane or structure. It is a double membraned cell organelle, commonly known as the phospholipid bilayer, that is found in both prokaryotic and eukaryotic cells.
Four major phospholipids predominate in the plasma membrane of many mammalian cells are phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, and sphingomyelin.
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the are repeating units within muscle fibers that act as the functional units of muscle contraction.
The fundamental contractile component of a myocyte is called a sarcomere (muscle fibre). The two primary protein filaments that make up a sarcomere—thin actin and thick myosin filaments—are the functional elements in charge of causing muscle contraction.
What is the name of the functional unit found within muscle cells?A sarcomere is the name for a skeletal muscle's functional unit. Myofibrils, which are comprised of actin and myosin filaments, make up the fibres of skeletal muscles. Sarcomeres, which are collections of these filaments, are formed.
The length of the myofibrils and subsequent myofibers can reach several centimetres. The muscle is made up of solitary multinucleated cells called muscle fibres. Sarcomeres, which are repeating units, make up myofibrils. Muscle contractions are mediated by these sarcomeres.
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what chemical element is found in protein that is not found in fats and carbohydrates?
Answer:
nitrogen
Explanation:
Nitrogen
Nitrogen is an element invariably found in proteins but not in all carbohydrates and lipids.
the enzyme camp phosphodiesterase hydrolysis camp to amp, what effect would an inhibitor of this enzyme have on glucose-1-phosphate production?
The effect that an inhibitor of cAMP phosphodiesterase enzyme have on glucose-1-phosphate production is that it reduces Glucose-1-phosphate.
Phosphodiesterase are the enzymes which controls the intracellular levels of cAMP and cGMP. By catalyzing hydrolysis of cAMP-bound to the RIα, PDEs actively prime RIα for re-association with the C-subunit and thus are critical for signal termination in cAMP signaling. Cyclic AMP (cAMP) mediates relaxation by beta-adrenergic agonists as well as other activators of adenylate cyclase. cAMP is a second messenger, used for intracellular signal transduction. cAMP signaling in the brain is widely known for mediating numerous neural processes such as development, cellular excitation, synaptic plasticity etc.
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for a certain trait, a heterozygous individual has a selective advantage than a homozygous dominant or homozygous recessive individual. this is called
A heterozygous person has a selection advantage above a homozygous dominant a hereditary recessive person for a certain characteristic. This is referred to as overdominance.
What is an example of homozygosity?You are considered to be dominant for a gene if you have two identical versions of it. In contrast, a genotype with heterozygosity has different alleles. Everyone with a recessive trait—like red hair and blue eyes, for example—is dominant for such a gene.
Or AA is homozygous?Homozygous people have two copies with same allele. That might be homozygous dominant or hereditary recessive, AA or aa. A person with two dominant "A" genotypes for a certain gene is said to be homozygous dominant for that gene.
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one parent is homozygous for a certain trait and the other is heterozygous. what fraction of their offspring would you expect to be heterozygous? support your answer with punnett squares.
In a heterozygous hybrid where both parents are heterozygous for a particular trait, the genotypic ratio is 1:2:1. In a cross where one parent is heterozygous and the other is homozygous for a characteristic, the genotypic ratio is 1:1. Sources.
The genotypic ratio illustrates how frequently an organism's characteristic will appear in the progeny when genes for specific traits are crossed. Using a simple monohybrid cross and the Punnett square method, this is more simply comprehended.
This cross's genotypic ratio is represented as 1:2:1. Each gene in both plants and animals carries two alleles, or variations, one from each parent. The Punnett equation is used to forecast all the phenotypic changes for the progeny when male and female gametes combine (cross).
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Question of the picture is below
This patent foramen ovale is normally closed before the baby is born to enable the baby use its own lungs for gaseous exchange.
Failure of the hole to close would lead to damage to the heart and lungs in the baby.
What is the patent foramen ovale?The patent foramen ovale is a hole that exists between the left and right atria (upper chambers) of the heart.
The hole is present in every human fetus as the fetus is developing within the womb. The hole links the two upper chambers (atria) so that blood can pass between them.
The presence of the hole in the fetal heart is necessitated because, in the developing fetus, the lungs are not being used.
This hole is normally closed before the baby is born because when the fetus is delivered, it would begin to use its own lungs for gaseous exchange.
Failure of the hole to close after birth leads to a disease known as an atrial septal defect.
The effect of this condition on the baby is that it causes the inability of the baby to thrive.
It can also lead to damage to the heart and lungs.
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when more than one gene controls a trait and the result is often a continuum (gradient) of phenotypes rather only two distinctive options this is called what?
when more than one gene controls a trait and the result is often a continuum (gradient) of phenotypes rather only two distinctive options this is called Polygenic Trait.
A Polygenic Trait that is influenced by two or more genes, such as height or skin tone, is referred to as a polygenic trait and Polygenic Trait characteristics of phenotypes do not follow the laws of Mendelian inheritance since several genes are involved. Polygenic Trait inheritance refers to the regulation of a characteristic by more than one gene in which the dominant allele of each gene expresses just a portion of the Polygenic Trait and the whole phenotype is only produced in the presence of the dominant alleles of all multiple genes.
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which location would be described if fast glycolytic was the most abundant skeletal muscle fiber type?
A location with fast glycolytic muscle fibers would typically be found in the muscles used for explosive, short-duration activities, such as;
SprintingJumpingWeightliftingThis is because these activities require fast and intense muscle contractions, and fast glycolytic fibers are best suited to meet these demands. Therefore, a location with fast glycolytic muscle fibers would normally be found in muscles used for these types of activities.
What are fast glycolytic muscle fibers?They are the most efficient type of muscle fiber for producing high power output in short bursts and are comprised of several characteristics, including:
A large number of mitochondria.Elevated levels of calcium and other enzymes.A larger muscle fiber cross-sectional area.All of these characteristics contribute to its ability to produce ATP (energy) rapidly, which is essential for producing maximum power in short bursts.
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how did the development of anonymous markers, such as short tandem repeats, aid in the production of a human genetic map?
Anonymous markers are genetic markers that do not cause a detectable phenotype but can be detected by molecular techniques. Markers correspond to specific, unique chromosomal regions and allow identification and ordering of specific DNA segments. Such information has been essential for constructing human genetic maps.
Short tandem repeats (STRs) are short repeat DNA sequences containing repeat units of 1-6 bp. STRs are widely used in biological research due to their polymorphism and high mutation rate. Strand Slippage duplication is the major mutational mechanism of STRs, and the stepwise mutation model is believed to be the predominant mutational model. STR mutation rates can be influenced by many factors. In addition, some trinucleotide repeats have been associated with neurodegenerative diseases in humans.
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FILL IN THE BLANK. the inorganic nutrient most often lacking in crops is __________.
Answer:
Nitrogen
Explanation:
The inorganic nutrient most often lacking in crops is nitrogen.
a man who carries an x-linked allele (gene) will pass it on to a. all of his daughters b. half of his daughters c. all of his sons d. half of his sons e. all of his children
A man who carries an x-linked allele (gene) will pass it on to all of his daughters.
The correct option is A.
What is allele and example?For instance, two alleles that code for black eyes and brown eyes respectively decide the same attribute, eye color. The genotype is made up of all the alleles that an organism possesses. The genotype of an organism is said to be homozygous if a group of alleles resemble one another.
Does allele Mean gene?An allele is a gene's variable form. Some genes exist in a number of forms, all of which share the same genetic locus on a chromosome. Because each genetic locus in humans has two alleles—one acquired from each parent—they are known as diploid creatures.
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which of these is haploid? a. b and c b. primary spermatocytes c. secondary spermatocytes d. spermatogonia
The haploid is a Secondary spermatocyte.
Both types of spermatocytes are sensitive to radiation and cancer but spermatogonial stem cells are not. So, the correct answer is secondary spermatocytes. Secondary spermatocytes are haploid in nature and contain half of the chromosomes present in primary spermatocytes.
Meiosis is the process by which duplicated chromosomes undergo two rounds of nuclear division to produce four haploid cells also called meiocytes. A haploid cell is formed when a parent cell divides twice, with two diploid cells with a complete set of genetic material in the first division and only half of the original genetic material in the second division. resulting in four haploid daughter cells with.
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Secondary spermatocytes are haploid.
Haploid gametes include sperm and egg (human germ cells) spores (fungi, algae, and plant germ cells) pollen (male plant germ cells). such chromosomes; therefore, our diploid number is 46 and the "haploid" number is 23. Of the 23 pairs, 22 are known as autosomes.
The term haploid comes from the Greek word halos, meaning simple. The words haploid and haploid are derivatives. Their definitions are based on the meaning of haploid. For example, the term haploid is used to mean a cell or organism that has half of a set of homologous chromosomes.
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A person cuts their finger. how does the process of mitosis help to repair the wound?
A person cuts their finger. the process of mitosis help to repair the wound by Regeneration. Mitosis helps in cell growth and cell development.
A cut on the finger will heal over time over a few days This is empowered by a cycle called Mitosis. The process of mitosis is responsible for both repair and regeneration. The growth and development of cells are aided by mitosis. Cells can age and break down, or they can be sprains and bruises, but eventually, they repair and grow back.
Mitosis is the stage of cell division that leads to the formation of two new daughter cells. Both the parent cell and the newly formed daughter cells share the same genetic makeup.
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a reduction in the lateral angle of the glenohumeral joint in relation to the anatomical position would be called __________.
Adduction is the term for a decrease in the glenohumeral joint's lateral angle relative to its anatomical position.
The entire serratus anterior contracts, which causes the scapula to shift anterolaterally over the ribs. The shoulder joint shifts superiorly as a result of the pull of the inferior portion at the lower scapula. Lifting the arm above 90 degrees is now possible because to this shifting (elevation).
The shoulder is the most flexible joint in the body, allowing for a variety of motions like forward flexion, abduction, adduction, external rotation, internal rotation, and 360-degree circumduction. The rotator cuff muscles, subscapularis, teres major, and infraspinatus are some of the intrinsic scapula muscles. These muscles help with glenohumeral joint abduction, external rotation, and internal rotation by attaching to the scapular surface.
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what is the difference between excitatory and inhibitory neurotransmitters? a. excitatory neurotransmitters make an action potential less likely to occur while inhibitory neurotransmitters make an action potential more likely to occur b. excitatory neurotransmitters make an action potential more likely to occur while inhibitory neurotransmitters make an action potential less likely to occur c. excitatory and inhibitory neurotransmitters both decrease the chances of an action potential d. excitatory and inhibitory neurotransmitters both increase the chances of an action potential
The correct option is A ; Excitatory neurotransmitters make an action potential less likely to occur while inhibitory neurotransmitters make an action potential more likely to occur .
Excitatory neurotransmitters stimulate neuronal activity. This implies they make it more likely for the neuron to fire an action potential. Inhibitory neurotransmitters suppress neuronal activity. This implies they reduce the possibility of the neuron firing an action.
Neurons interact via excitatory or inhibitory electrical currents known as action potentials. Excitatory currents cause one neuron to communicate information with the next via an action potential, but inhibitory currents lower the likelihood of such a transfer occurring.
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how does the structure of the transitional epithelium contribute to its function in the urinary bladder?
The transitional epithelium is a specialized layer of cells found in the urinary bladder, which is responsible for a wide range of functions. The structure of the transitional epithelium is essential to its function in the bladder, as it is designed to respond to fluctuations in the bladder’s volume, as well as providing protection from physical and chemical damage.
The transitional epithelium is composed of three distinct layers. The innermost layer is the mucosa, which consists of a single layer of tall, columnar cells. These cells are adapted to stretch and expand, allowing them to accommodate the varying volumes of urine within the bladder.
The middle layer is the lamina propria, which is composed of a network of collagen and elastic fibers. This layer provides the bladder with structural support and helps it to return to its normal size after it has been stretched. The outermost layer is the muscularis, which is composed of circular and longitudinal smooth muscle fibers. These fibers allow the bladder to contract and expel urine.
The structure of the transitional epithelium plays an important role in protecting the bladder from physical and chemical damage. The mucosa contains a number of mucus-producing cells, which help to protect the underlying tissue from the damaging effects of urine and other toxins. The lamina propria is also important in providing physical protection, as it helps to limit the expansion of the bladder and prevents rupture. The muscularis also helps to protect the bladder, as it provides a barrier to the escape of urine and other toxins.
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_____ is the flow of water through selectively permeable membranes. This goes from _____ to _____ concentration.
Water passes through membranes that are selectively permeable during osmosis. This concentration fluctuates between high and low.
Osmosis is the method by which water molecules move from a region with a high amount of dissolved molecules to one with a low concentration by passing through a semipermeable membrane. As an example, the colon in people employs osmosis to absorb water.
Due to ongoing collisions, particles & molecules are always in motion. Some of the elements that affect how quickly molecules or particles migrate from one area to another include:
Smaller particles will travel more quickly than larger ones, which will move more slowly.It involves the solute's gradient of concentration.Learn more about osmosis at
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One primary function of the cell membrane is…
The cell membrane regulates the transport of materials entering and exiting the cell.
Explain how filtration separates materials based on the size of their particles.
Answer:
FILTRATION. When the substances in a mixture have different particle sizes, they are separated by filtration. The mixture is poured through a sieve or filter. The smaller particles slip through the holes, but the larger particles do not.
Explanation:
Answer:
Below
Explanation:
Filtration is a process that separates particles in a mixture based on their size. This is typically done using a filter medium that allows smaller particles to pass through but retains larger particles. The smaller particles pass through the filter and are collected on the other side, while the larger particles are retained on the filter. This process can be used to separate a wide range of materials, including liquids, gases, and solids.
To understand how filtration works, it's helpful to think about the size of the particles in the mixture being filtered. If the particles are very small, they will be able to pass through the pores of the filter, but if the particles are larger, they will be too big to pass through the pores and will be retained on the filter. This means that the filter will act as a barrier, allowing only particles that are small enough to pass through.
There are many different types of filters that can be used for filtration, including paper filters, cloth filters, and membrane filters. Each type of filter has its own unique set of characteristics that make it suitable for certain applications. For example, paper filters are often used for filtering liquids, while membrane filters are used for filtering very small particles, such as bacteria or viruses.
Overall, filtration is a useful technique for separating particles based on their size. It is widely used in many different industries, including water treatment, food processing, and pharmaceuticals.
please help ASAP pleaseeee
Here is my best guess! I just wanted to help you!
I will delete if incorrect
Box 1 ⇒ Reproductive
Box 2 ⇒ Genetic incompatibility
Box 3 ⇒ Geography
Box 4 ⇒ Genetic incompatibility
Box 5 ⇒ Behavioral
Box 6 ⇒ Geography
The area between the pre-synaptic nerve cell and the post-synaptic muscle cell is termed the synaptic cleft.
True or False
The answer is True. The area between the two cells is known as the synaptic cleft.
There is a distinct separation between the presynaptic and the postsynaptic membrane.
The difference tells us about there must be some intermediary signaling mechanism between the presynaptic neuron and the postsynaptic neuron.
The presynaptic neuron is the cell that sends information whereas the postsynaptic neuron is the cell that receives information
The synaptic cleft is the small space separating the presynaptic membrane and postsynaptic membrane and the synaptic vesicle is an organelle that houses chemical neurotransmitters.
Neurotransmitters are chemicals that are released by neurons and bind to receptor sites, which are synthesized in the neuron, and packaged into vesicles.
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before the publication of charles darwin's on the origin of species, what was the prevailing public consensus regarding species evolution?
Before the publication of charles darwin's on the origin of species. The prevailing public consensus regarding species evolution was that species were permanent and unchanging. The correct answer is A.
Prior to the release of Charles Darwin's book On the Origin of Species, the general public's perception of species evolution was that they were unchangeable and unalterable.
The scientific treatise On the Origin of Species by Charles Darwin is regarded as the cornerstone of evolutionary biology.
Charles Darwin is renowned for his theory of evolution, which holds that species change over time and that natural selection is the factor that causes the change.
He was the first naturalist to introduce the idea that there is a diversity of species on earth.
Prior to him, academics, philosophers, and thinkers held that species are not ever-changing and have remained constant throughout the evolution of life on Earth.
All plants and animals were created in the same shape as they are today, according to Carolus Linnaeus, the father of taxonomy, who lived in the 18th century.
Your question is incomplete but most probably your full question was
Before the publication of Charles Darwin's On the Origin of Species , what was the prevailing public consensus regarding species evolution?
A) That species were permanent and unchanging
B) That species evolved through physical changes that led to success
C) That species evolved by means of natural selection
D) That species were modified over time but did not change into new species.
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The scientists does a dihybrid cross of two corn plants. One corn plant is homozygous for yellow kernels and heterozygous for smooth kernels. The other corn plant is heterozygous for purple kernels and homozygous for smooth kernels. Which best describes the possible offspring of this cross?
a
There is a 50% chance of having purple, smooth kernels and a 50% chance of having yellow, smooth kernels.
b
There is a 50% chance of having purple, wrinkled kernels and a 50% chance of having yellow, shrunken kernels.
c
There is a 100% chance of having purple, smooth kernels.
d
There is a 100% chance of having yellow, shrunken kernels.
There is a 50% chance of having purple, smooth kernels and a 50% chance of having yellow, smooth kernels. Option A.
Dihybrid crossingFrom the illustration, the yellow kernel allele is recessive, the purple kernel is dominant, the smooth kernel is dominant, and the shrunken kernel is recessive.
The genotype of corn that is homozygous for yellow kernels and heterozygous for smooth kernels = ppSs
The genotype of corn that is heterozygous for purple kernels and homozygous for smooth kernels = PpSS
Crossing the two:
ppSs x PpSS
Genotype and phenotype of offspring:
8 P_S_ = purple kernel, smooth kernel8 ppS_ = yellow kernel, smooth kernelIn other words, from the phenotypic analysis, there is a 50% chance of having purple, smooth kernels and a 50% chance of having yellow, smooth kernels.
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which type of air pollution caused forests and aquatic ecosystems to die and cement infrastructure to be damaged? group of answer choices acid rain smog particulate matter
acid rain is the type of air pollution caused forests and aquatic ecosystems to die and cement infrastructure to be damaged. it become very serious issue in environment
When substances like sulfur dioxide and nitrogen oxides are released into the atmosphere, a chemical reaction that results in acid rain starts. These substances are capable of ascending to extremely high altitudes in the sky, where they combine and interact with oxygen, water, and other chemicals to produce acid rain, a type of noxious smog. It has been established that acid rain has negative effects on trees, freshwaters, soils, insects, and aquatic life forms, as well as damaging effects on human health. It also causes paint to peel and causes corrosion in steel structures like bridges and weathering in stone structures and sculptures.
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monocytes move from the systemic circulatory system into general connective tissues, where they differentiate into what phagocytic cell type?
Macrophage. When monocytes go from the rotation to the apkins, they develop into macrophages. When an infection arises, monocytes resettle to the apkins. Over the course of around 8 hours, the monocytes grow significantly, induce grains, and transfigure into macrophages.
What about cells?The lowest unit in biology that can sustain life on its own and makes up all living effects as well as the body's apkins.The cell membrane, the nexus, and therefore the cytoplasm are the three primary factors of a cell.The chemicals that enter and leave the cell are governed by the cell membrane, which encloses the cell.There are numerous billions of cells within the mortal body.They give the body structure, absorb nutrients from reflections, turn those nutrients into energy, and perform certain tasks.Intricate arrangements of bitsy filaments and hundreds or indeed thousands of bitsy, unique structures mentioned as organelles can be set up in the cytoplasm.All living effects have cells as their abecedarian structure blocks.Cells Give the structure, absorb nutrients from reflections, and perform critical tasks.Cells are frequently stretched, globular, or indirect.Some cells have lengthy ends that are pointed.They've a spindle-like appearance.Occasionally, cells might be rather lengthy.Some have branches, kind of a neuron or a whim-whams cell.Learn more about cell here:
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what three categories of proteins are needed for basal transcription of protein-encoding genes in eukaryotes?
Three categories of proteins are needed for basal transcription of protein-encoding genes in eukaryotes are:
RNA polymerase II
general transcription factors
mediator
Depending on the gene being transcribed, one of three types of polymerases is used during transcription in eukaryotes. All of the protein-coding genes are transcribed by RNA polymerase II, whereas rRNA genes are transcribed by RNA polymerase I, and rRNA, tRNA, and short nuclear RNA genes are transcribed by RNA polymerase III. In order to start transcription in eukaryotes, a number of transcription factors must bind to intricate promoter sequences that are typically found upstream of the gene being copied. The FACT complex moves and reassembles nucleosomes as the polymerase passes by during the 5' to 3' mRNA synthesis process. Contrary to RNA polymerases I and III, which stop transcription using protein- or RNA hairpin-dependent mechanisms, RNA polymerase II continues transcription for 1,000 or more more nucleotides before cleaving the extra ones.
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