An example of how scientists can better understand a complex system by studying its smaller component parts is looking at how cells work.
What are Cells?
Cells basically are the basic building blocks of all living things. They are the smallest units of life, and they make up all organisms, from single-celled bacteria to complex plants and animals. Cells are made up of many different parts, including a nucleus, mitochondria, and cytoplasm. Cells are able to reproduce, grow, and specialize to form the various tissues and organs of the body.
They are the basic building blocks of all living things, and understanding how cells work can help scientists better understand how the body and its systems work as a whole. By studying the components of cells such as proteins, DNA, and organelles, scientists can gain insight into how the complex functions of the body operate, and how diseases such as cancer may be caused or treated.
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The occurrence of transitional fossils supports the idea that (select all that apply)Group of answer choices extinct and living forms are related.these are ancestors of living species.change occurs in species over time.
The occurrence of transitional fossils supports the idea that - extinct and living forms are related, these are ancestors of living species, change occurs in species over time.
A transitional fossil is that fossilized remains of a life form which exhibits traits common to both an ancestral group and its derived descendant group which is living at present. The descendant group is sharply differentiated by gross anatomy and mode of living from the ancestral group.
These fossils show that taxonomic divisions are human made that have been superimposed on the continuum of variation. Because of the incompleteness and unavailability of the fossil record, there is usually no way to know exactly how close a transitional fossil is to the point of divergence if evolution of that particular species. Therefore, it cannot be assumed that transitional fossils are direct ancestors of more recent groups, though they are frequently used as models for such ancestors.
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In three to five sentences, describe the advantages and disadvantages using maps in modeling mitosis.
In biology, models can be viewed as representations, or perhaps events, of the structure and function of biomolecules. Cells have to do several things. First, cells must either replicate themselves or expand. In our human body, cells do both. It replicates when it breaks the skin and expands for the winter. However, some cells do not divide. But the cell also needs to decide whether to make identical copies or four half-copies. Half copies have sexual reproduction. And that's the choice between mitosis and meiosis.
The advantages and disadvantages of using these maps when modeling mitosis are:
They represented intermediate phases consisting of G1, S and G2 phases.
They also listed the stages involved in mitosis. this is also good
Other images also show mitosis, but lack potentially confusing titles or captions. The model should be able to represent the different activities that occur during mitosis. That is, the second model should contain markers that indicate the mitotic process.
The first models had to include pictorial representations for better understanding.
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I Need Help From Science
Why do temperatures in the mesosphere decreases as altitude increases?
Answer:
due to decreasing absorption of solar radiation by the rarefied atmosphere and increasing cooling by CO2 radiative emission.
Explanation:
Within the mesosphere, temperature decreases with increasing height, due to decreasing absorption of solar radiation by the rarefied atmosphere and increasing cooling by CO2 radiative emission.
which one of the following elements in the energy balance equation is under individual control?
ADH factors in the equation of energy balance are a person's personal control and do not count as an adverse effect of ephedra.
What connection exists between the amount of ADH and water reabsorption in the tubules?The kidneys are the target organ of ADH as it moves through the bloodstream. The renal tubules become more porous as a result. This implies that more water can exit the kidney tubule for selective reabsorption back into the circulation.
Does aldosterone make you more hypertensive?Your kidneys release (excrete) sodium through your urine as a result of aldosterone. Water retention results from an increase in salt in your bloodstream. The renin-angiotensin-aldosterone pathway is thus completed, increasing blood volume and blood pressure.
The whole query is:
Food-based energy intake.
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Suppose that most of the 25 ants on stumps stopped between 5 to 8 meters from the feeder and started nest-searching behavior, but one ant kept walking until it was 11 meters from the feeder.
How would this change the length of the whiskers in the box-and-whisker plot shown in Test 1?
The right whisker would have been longer and also the left whisker would be the same length.
The bottom and higher ends of where the ants paused to search are shown by the whiskers. The whisker on the right would be longer if one ant had walked 11 meters, showing a shift in the upper extreme.
To analyse a dataset's distribution, a box plot is employed. A box and two lines make up the box plot. We call the two lines "whiskers." The lowest number is shown at the end of the first line, and the highest number is shown at the end of the second line.
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What is a 1:2 1 genotypic ratio?
The 1:2:1 genotypic ration dictates the law of are is homozygous dominant, heterozygous dominant and homozygous recessive.
A 1:2:1 genotypic ratio is a ratio of alleles that is found in a monohybrid cross. A monohybrid cross is a type of genetic cross in which only one trait is being studied. In a 1:2:1 ratio, the first number represents the homozygous dominant genotype, the second number represents the heterozygous genotype, and the third number represents the homozygous recessive genotype. This ratio can be found by using the Punnett square method.
This generally represents the genetics, of the first generation of the monohybrid cross made between the pea plant showing dominant and recessive traits. Such that dominant parent was homozygous dominant and recessive parent was homozygous recessive.
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How would this model be altered in non-industrialized countries?
A No change due to a drop in both plant photosynthesis and respiration.
B Balanced due to the reduced combustion of fossil fuels.
C There would be little change in any sinks or resources; no change to model.
D Unbalanced due to the increase in plant sinks.
B Balanced due to the reduced combustion of fossil fuels would this model be altered in non-industrialized countries.
What issues do the newest industrialised nations face?Emerging industrialised nations have a challenge. They must invest a sizable sum of money if they wish to keep up their industrialisation trend. Cities need to grow, transportation needs to be as effective as it can be, and new roads need to be built.
Based on nutrition, health, education, and literacy metrics, there is a lack of human resources. Economic vulnerability, as evidenced, for instance, by fluctuations in agricultural production, exports of commodities and services, and the proportion of the population that is displaced by natural disasters.
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Can we run out of renewable resources? Explain.
Answer:
No
Explanation:
Some resources will practically never run out. These are known as renewable resources. Renewable resources also produce clean energy, meaning less pollution and greenhouse gas emissions, which contribute to climate change.
Examples are Sun, Wind, and Water. We will always have sunlight and wind, right? So no, renewable resources CANNOT run out, hence the 'renewable' part. They come from sources that are not depleted when used. Others, like biomass, come from sources that can be replenished.
Hope this helps
Using a microscope, you observe an amoeba moving toward a food source. This is an example of
A) reproduction.
B) cellular structure.
C) metabolism.
D) growth.
E) responsiveness.
The act of recognizing changes with one's internal or external environment and responding to any of those changes is known as response time, sometimes known at responsiveness or irritability. It consists of sensing a stimulus and responding to it.
What is meant by "responsiveness"?The ability to respond positively or quickly to anything or anyone: They were praised for their capacity to adapt and meet local needs. She doesn't pay much attention to her surroundings.
Why is being responsive so important? It is what?Being responsive demonstrates your concern for others and your commitment to meeting their needs. This expands your network through creating relationships, cultivating trust, and fostering goodwill. If you're a business competing in a competitive market, responsiveness may enable you to stand out and strengthen your brand.
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10. Phylogenetic relationships among genera of danaine but terflies (Lepidoptera: Nymphalidae) as implied by morphology and DNA sequenc
The findings show that, under the right conditions, this little gene area can be a valuable source of information for phylogenetic inference.
In order to infer deeper level patterns of association among nymphalid subfamilies and tribes, a cladistic analysis was done on a 378 bp area of the wingless gene from 103 nymphalid species and three pierid outgroups. Despite the fact that the data are largely homoplastic, the most sparse cladograms frequently confirm well-known groups. For the diverse butterXy subfamily Satyrinae, we have derived the first relationship theory that has empirical validity. For the 165 Satyrinae taxa represented, we used 3090 base pairs of DNA from the nuclear genes EF1 and wingless as well as the mitochondrial gene COI.
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Which mutation caused Lucy immunodeficiency disease?
Hyper IgE syndrome, Job's syndrome is a rare condition with symptoms Lucy's had. A STAT3 gene mutation is the primary cause of the immunodeficiency, which affects approximately one person in a million.
In every tissue of the body, the STAT3 protein is active. It is necessary for life and plays a significant role in the growth and operation of many bodily systems. Signals for the maturation of immune system cells, particularly T cells and B cells, are transmitted by the STAT3 protein in the immune system. Additionally, the protein plays a part in cellular processes that support allergic reactions and is involved in the regulation of inflammation, one of the immune system's responses to infection or injury.
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Explain the application of biology epecially the role of microbilogy and biotechnology for the growing public and global health need
A, in the development of effective diagnotic ,prevention and treatment meaure including production of novel drug and recombnant vaccine
B, in the production of nutritionally enriched genetically modified crop and animal to alloviate food inecurity which i a common dilemma particularly in underdeveloped countrie
Biotechnology is the application of biology to the creation of new things, processes, and creatures with the goal of enhancing society and human health.
A. Medical biotechnology is a subspecialty of medicine that conducts research on living cells and cell components before creating pharmacological and diagnostic products. These goods aid in both disease treatment and prevention. Modern diagnostic and preventative medical devices, such as diagnostic test kits, vaccinations, and radio-labeled biological treatments used for imaging and analysis, have been made possible by advances in biotechnology.
B. By improving crop quality and in some cases productivity, biotech crops can boost farming's profitability. Some of these crops can make work easier and increase farmer safety. As a result, farmers may focus more of their time on other lucrative activities and spend less time cultivating their crops.
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Steps in Urine Formation
What are the events at the different areas of a nephron and in the collecting duct?
A. filtrate forms
B. Active & passive mechanisms reduce filtrate volume
C. Water is absorbed, ions are not.
D. Ions are actively absorbed, water is not.
E. The first nephron component where aldosterone regulated
F. ADH regulated water absorbtion
G. Water & solutes transported back into the bloodstream.
The filtrate or developing urine is undergoing alteration by secretion and reabsorption before traveling from this point to the extremities of the collecting ducts.
What is typical urination?Normal urine might be clear or light yellow in color. However, some factors can alter the color. Foods like beets, blackberries, and fava beans, for instance, might cause urine to turn pink or red. Additionally, some medications might produce vibrant urine colors like orange or greenish-blue.
What causes yellow urine?Urobilin, a chemical waste product produced by the disintegration of old red blood cells, is what gives urine its most prevalent color, which is yellow.
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Which neurologic disorder is characterized by a protein detaching from neurons causing the cortical nerve cell processes that become twisted and dilated
The correct option is C ; Alzheimer disease , Alzheimer's disease is a brain illness that gradually deteriorates memory and cognitive skills, as well as the ability to do fundamental tasks.
The majority of people get Alzheimer's disease symptoms later in life. Alzheimer's disease is thought to be caused by an accumulation of aberrant proteins in and around brain cells.
Amyloid is one of the proteins involved, and its deposits form plaques around brain cells. Tau is the other protein, and deposits of it within brain cells produce tangles.
The majority of Alzheimer's patients, particularly those with late-onset Alzheimer's, develop symptoms in their mid-60s or later. Early-onset Alzheimer's disease occurs when the illness manifests itself before the age of 65., though this is uncommon.
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Full Question
Which neurologic disorder is characterized by cortical nerve cell processes that have become twisted and dilated?
a. Dementia syndrome
b. Delirium
c. Alzheimer disease
d. Parkinson disease
1. According to the video on Energy Flow Through Ecosystems, energy flows from the sun to the __________, then to the primary __________, then to the secondary ___________, then to the ___________ consumer, and then to the apex ____________, and finally to the ___________.
2. Green plants are the only __________ that make their own food using sunlight, water, carbon dioxide through a process called _______________.
3. When the plant makes its food the carbon dioxide is changed from gas to _________ and the gas called __________is produced.
The second video which explains the food chains and food webs will help with the following exercises.
4. A food _______ shows feeding relationships between animals that are in more than one food chain.
Below are some feeding relationships between animals in a woodland:
· Worms, voles, and mice eat vegetation.
· Badgers eat worms, voles and mice.
· Shrews and badgers eat worms.
· Barn owls eat shrews, voles and mice.
5. The animals in a food web that are in the food chains above would be:____________________________________________________.
6. In a trophic __________ of a food web, the plants are in level ______ and the highest level is the ______.
7. Organisms that feed on plants and animals are called __________.
How did Kai acquire NF1? How likely is it that the Rossis will have another child with NF1?
Neurofibromatosis type 1, commonly known as NF1, is a genetic disorder that affects approximately 1 in 3,000 people worldwide. It is an autosomal dominant disorder, meaning that a person only needs to inherit one copy of the NF1 gene from a parent in order to develop the disorder.
Kai Rossi, a young boy from the United States, was diagnosed with NF1 in 2019. His parents, John and Sarah Rossi, were both carriers of the NF1 gene, although neither of them have the disorder. This means that each time they had a child, that child had a 50% chance of inheriting the NF1 gene from either of them. As luck would have it, Kai inherited the NF1 gene from his parents and developed the disorder.
The likelihood of the Rossis having another child with NF1 depends on whether or not they are still carriers of the gene. If they are, then the chance of their next child inheriting the NF1 gene is still 50%. However, if they have since had genetic testing and found out that they are no longer carriers, then the chance of their next child developing NF1 is significantly lower.
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What are the 3 main functions of meiosis?
Answer:
to produce gamate or reproductive cells.
to distinguish between male and female specie.
to produce tetrads having equal number of chromosomes
Which of the following general mechanisms appear to be involved in the formation of cancer cells?
A) Genomic instability, DNA repair failure, chromatin modifications.
B) Inversions, operon formation, methylation.
C) RNA failure, DNA phosphorylation, phosphorylation of adenyl cyclase.
D) Transdetermination, mutation, allosteric interactions.
E) Suppression, tabulation, projection.
Cancer is brought on by cells that divide out of control and invade surrounding tissues. Cancer is mostly brought on by DNA changes. The majority of DNA mutations that result in cancer occur in areas of DNA called genes.
What precisely does DNA mean?DNA, commonly referred to as deoxyribonucleic acid, is the genetic material carried by humans and nearly everything else organisms. A person's DNA is present in almost all of their cells.
What does DNA do and what is it?DNA is the molecule of information. It provides the knowledge required to produce proteins, another type of substantial molecule. Each of your cells contains 46 substantial objects set of chromosomes that are distributed throughout these instructions. These chromosomes are made up of numerous smaller segments of DNA, called genes.
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Why do cloned calico cats look different?
Answer:
Even with the exact same genetic make-up, a calico cat’s coloration would be different than her twin’s because it’s random whether a cell codes for orange or black fur. The same goes for clones.
Explanation:
What processes are used in light-independent reactions (photosynthesis)? Please name all.
What processes are used in light-dependent reactions (photosynthesis)? Please name all.
Word Bank:
Processes: ATP Synthase, Calvin Cycle, Electron Transport Chain, Photosystem I, Photosystem II
The light-independent reactions use stored chemical energy from the light-dependent reactions in order to fix carbondioxide gas and create a product that can be converted into glucose.
Define the process of photosynthesis?Photosynthesis is that kind of process in which green plants and organisms prepare their own food in the presence of sunlight to neutralize the reaction.
The process of photosynthesis takes place in two stages one stage is known as a light-dependent reaction while the other stage is known as a light-independent reaction.
ATP Synthase:
The ATP synthase is also known as a mitochondrial enzyme which is localized inside the inner membrane, where it catalyzes the synthesis of ATP from ADP and phosphate.
Calvin Cycle:
The process of the chemical reaction is performed by the plants for the reduction of carbon dioxide and other compounds into glucose.
Electron Transport Chain:
The electron transport chain is that chain in which a series of four protein complexes couple redox reactions, creating an electrochemical gradient that leads to the creation of ATP in a complete system named oxidative phosphorylation.
Photosystem 1:
In this system, the proteins are responsible for the precise arrangement of cofactors and determining redox properties of the electron transfer centers.
Photosystem 2:
First of all the photosystem 2 precise arrangement of cofactors and determine the redox properties of the electron transfer centers.
So we can conclude that the process of photosynthesis is in which the green plants and organisms prepare their own food in the presence of sunlight and oxygen.
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macroscopically visible growths or clusters of microorganisms on solid media are called __________.
The answer is:
Colonies
T or F? In the muscles of the limbs, the origin is usually the immobile muscle attachment
In the muscles of the limbs, the origin is usually the immobile muscle attachment. True
A skeletal muscle connects to bone (or other muscles or tissues) at two or more points. If the location is a bone that stays motionless during an activity, the connection is referred to as an origin. If the connection is on a bone that moves during the activity, it is referred to as an insertion.
Muscle tissue is classified into three categories in the muscular system: skeletal, cardiac, and smooth. The term "structural" refers to the fact that the body has a distinct structure. Skeletal muscle is responsible for the movement of bones and other structures. To pump blood, cardiac muscle contracts.
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1.-5. Match the description to its anatomical term.
The system for gaseous exchange in the lungs
The system for maintaining a constant internal
environment in other tissues
The membranous sac that surrounds the heart
The wall that divides the heart into two cavities
Uppermost two chambers of the heart
a. Pericardium
b. Pulmonary circuit
c. Systemic circuit
d. Atria
e. Septum
a. Pericardiumb. Pulmonary circuitc. Systemic circuitd. Atriae. Septum
the basic unit of all life. contains organelles the work together to maintain homeostasis within the organism.
Answer: the cell
Explanation:
What is the role of mucus and cilia in the respiratory tract?
The role of mucus and cilia in the respiratory tract is to block foreign particles from entering the nose.
The respiratory tract consists of the nasal cavities, pharynx, larynx, trachea, bronchi, bronchioles, alveoli and lungs. The nasal cavity in the respiratory system has a function to continue the incoming air then leads to the throat.
In the nasal cavity there is a mucous membrane which is the receipt of the mucous membrane and cilia of the nose hair which is very fine. Mucus is made of mucin and water which forms a sticky gel whose role is to trap bacteria, viruses, dirt and dust from outside so it doesn't enter the nose. While the cilia play a role in filtering air through their fine hairs which will prevent dirt from entering the nose.
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An alpine area of a national park near a trail is normally covered by plants, but much of the area is now bare soil. Park rangers suspect that trampling by hikers has killed the plants. Which of the following will best test the hypothesis?
Pilihan jawaban
Counting the number of hikers leaving the trail in comparison with the number of hikers leaving other trails
Counting the number of plants along the trail in comparison with the number of plants along other trails
Comparing the number of hikers this year to the number of hikers last year on various trails
Comparing plant survivorship in areas where hikers stay on the trail with plant survivorship in the area where hikers leave the trail
Comparing the ages, heights, and weights of hikers on different trails
Comparing plant survivorship in areas where hikers stay on the trail with plant survivorship in the area where hikers leave the trail is the best test of the hypothesis.
In the western Himalayas, the threshold over which trees can no longer be found varies according to height, aspect, slope, and other factors, but is often above 3600m. This is one of the most critical zones for creatures that live at high altitudes. The Kosciuszko National Park is bordered by the Alpine National Park, which spans from middle Gippsland to the New South Wales border. Some of Australia's most beautiful alpine scenery, including mountain peaks, escarpments, and grassy high plains, may be found within the park.
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a ddntp, used often in dna sequencing, lacks a(n) ________ at the ________ and ________ carbons.
In DNA sequencing, a ddNTP is frequently used. It lacks a hydroxyl (OH) group at the 2' and 3' carbons.
Dideoxynucleotides triphosphates are referred to as ddNTP. Four kinds of nucleotides are included in it: ddATP, ddTTP, ddCTP, and ddGTP. Sanger sequencing, also known as chain-termination sequencing, employs ddNTP.
This ddNTP lacks a free hydroxyl (OH) group necessary for DNA replication, it is employed to prevent DNA synthesis. They are also known as 2' 3' because they lack hydroxyl groups on the ribose at either the 2' or 3' locations. As a result, they stop the chain from elongating because no phosphodiester bond is formed with the subsequent carbon.
Therefore, the blanks can be filled with hydroxyl (OH) group, 2' and 3'.
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Select the vertebrate taxon or taxa whose origin(s) involved duplication of Hox genes.
Select all that apply.
a) Gnathostomes
b) The genus Homo
c) Craniates
Gnathostomiases The vertebrate binomial nomenclature or taxa with origin(s) involves Hox gene duplication are known as craniate.
Why does gnathostomiasis occur?Several species species parasitic worms (nematodes) of the genus Gnathostoma are responsible for human gnathostomiasis. Although it has been identified in other parts of Asia, South and Central America and also some regions of Africa, the illness is most frequently discovered and diagnosed in Southeast Asia.
Gnathostomiasis is detected in what ways?Based on clinical signs, gnathostomiasis in humans can be diagnosed. And symptoms (intermittent dermal or cutaneous migrating swelling), a raised blood eosinophil level, and a pertinent exposure history (residing in or visiting areas where the disease is endemic; consuming raw or undercooked foods fish, frog, or chicken)
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What is the relationship between natural selection and genetics?
Gene guns, other direct gene introduction techniques, or specially built bacterial trucks are all used in genetic engineering to insert genetic material, a process that does not happen naturally.
Natural sexual and asexual reproductive methods are used in conventional breeding, which primarily relies on selection. Through a procedure called genetic engineering, crops can be produced more quickly than through selective breeding by directly changing an organism's DNA.
Any selection procedure that results from an organism's capacity for environmental adaptation is referred to as natural selection. Contrarily, artificial selection refers to selective breeding that is mandated by an external agent, typically humans, in order to increase the frequency of desirable traits.
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PLEASE TYPE THE RESPONSE Charles Darwin proposed that evolution by natural selection was the basis for the differences that he saw in similar organisms as he traveled and collected specimens in South America and on the Galapagos Islands. A) Explain the theory of evolution by natural selection as presented by Darwin. (6 Marks) B) Each of the following relates to an aspect of evolution by natural selection. Explain TWO of the following. (8 Marks) (i) Convergent evolution and the similarities among species in a particular biome. (ii) Natural selection and the formation of insecticide-resistant insects or antibiotic-resistant bacteria. (iii) Speciation and isolation. (iv) Natural selection and heterozygotes advantage.
According to the theory of evolution by natural selection as presented by Darwin, organisms breed more young than they can withstand in their surroundings.
Charles Darwin's theory of evolution is known as natural selection. Animals with heritable traits that favor survival and reproduction will often generate more offspring than their contemporaries given the shortage of resources in nature, increasing the population frequency of such traits across successive generations. Those with more physical capacity to endure, develop into adults, and reproduce.
Darwin started to question if South American species had made it to the Galapagos and had since transformed as a result of climatic adaptation. This notion—that species could alter over time—ultimately inspired Darwin to develop his theory of evolution through natural selection.
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