A cell knows when to divide when to duplicate its chromosomes, or when to enter another stage of the cell cycle by communicating with each other using chemical signals from special proteins called cyclins.
Cells control their division by exchanging chemical signals via unique proteins called cyclins with one another. These signals function as switches that inform cells when to begin dividing and then when to stop.
A cell has to go through a number of checkpoints in order to transition from one stage of its life cycle to the next. Specialized proteins inspect each checkpoint to see if the required circumstances are there. If so, the cell can move on to the following stage.
In order for each new cell to include all of the necessary genetic information, the genes must also produce copies of themselves prior to cell division.
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s.How might mutations affect the cell cycle?
Answer:
How does mutation affect cell cycle? In most instances, the alteration of the DNA sequence will result in a less functional (or non-functional) protein. The result is detrimental to the cell and will likely prevent the cell from completing the cell cycle; however, the organism is not harmed because the mutation will not be carried forward.
Explanation:
A virus mutates, and therefore it has which of the following traits of living things? (1 point)
O It grows and develops.
OIt is made of cells.
OIt evolves.
It uses energy
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Answer:
the answer is your mom&
Explanation:
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What are the 7 characteristic of living things?
Answer:
(MRSGREN)
M - MOVEMENT
R- RESPIRATION
S- SENSITIVITY
G- GROWTH
R- REPRODUCTION
E- EXCRETION
N- NUTRITION
The seven characteristics of living beings: MRS.GREN
What is mrs.gren?
All living beings have some characteristics that they perform that deem them living being. These characteristics are how living and non living beings are differentiated.
The term MRS.GREN is used to recall the seven characteristics;
M- (movement) all living things have wide range of movements.
R- (reproduction) reproduction is a way that living things used to produce new organisms of their kind.
S- (respiration) In most living things, oxygen is used to oxidize nutrients and CO2 is produced as a result of such.
G-(growth/develop) young living things grow and develop into adults.
R-(responsiveness) Living beings respond to their surroundings in a way non living beings do not. They are sensitive to light, heat and all the changes that occur around them.
E-(excretion) All metabolic waste and non useful wastes are eliminated from the body of an organism in this process.
N- (need/ nutrition) all living things need nutrients to survive and function on a daily basis.
Therefore, mrs.gren is the 7 characteristics of life.
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Which cells are passed down from parent to offspring? *Circle all that apply.
1. Sperm cell
2. Nerve cell
3. Muscle cell
4. Egg cell
Sperm cells are passed down from parent to offspring.
Sperm cells shape in the course of the method called spermatogenesis, which in amniotes (reptiles and mammals) takes location withinside the seminiferous tubules of the testes.
The motive of a sperm mobileular is to be launched in the course of sexual sex and to in the end meet with an ovum (egg mobileular), that is produced through a biologically lady body. Once united, the sperm will penetrate and fertilise the egg with a view to create new genetic material.
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because each old strand of the parent molecule serves as a(n) ____________ for and is present in each new daughter strand, the process of dna replication can be described as ____________ .
Answer:
The process of DNA replication can be summarized as follows: DNA unwinds at the origin of replication. Helicase opens up the DNA-forming replication forks; these are extended in both directions. Single-strand binding proteins coat the DNA around the replication fork to prevent rewinding of the DNA. Hope this helps you with the question young lad
Explanation:
Which two kingdoms contain producers, how about decomposers?
What does Clark experiment supports the claim that mercury in heavier than water The instability of the air
Since mercury sinks to the bottom when placed in water, mercury is heavier than water.
What is density?The density of a substance is a measure of the compactness of the materials of the substance.
Density is defined as the ratio of the mass and volume of a substance.
Mathematically;
Density = mass / volume.The density of two liquid substances can be compared by observing the behavior of one liquid when it is placed in another.
When a liquid substance is placed in another liquid, if it is denser than that liquid, it will sink to the bottom of the other liquid. However, if the liquid is less than the liquid in which it is placed, it will float on the surface of that liquid.
When mercury is placed in water, it will sink to the bottom of the water, indicating that it is denser than water.
On the other hand, when water is placed in mercury, it will float on the surface of mercury indicating that it is less dense than mercury.
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The yew tree is a rare and slow-growing tree. Paclitaxel is an anticancer compound obtained from the bark of the yew tree. The extraction of the compound is expensive and damages the yew tree. Scientists have isolated and grown stem cells from a yew tree that could be used to produce paclitaxel.
The statement that best describes an advantage of using stem cells from a yew tree to produce paclitaxel is option A:Stem cells can be grown and reproduced in a laboratory.
What does the yew tree represent?Old yew trees' drooping limbs can take root and grow new trunks where they contact the ground. As a result, in Celtic culture, the yew came to represent both death and resurrection. The toxicity of the tree's needles in particular will also have been known to the Celts.
Note that Yew trees were seen as both omens of doom and symbols of immortality. Yew branches were traditionally carried on Palm Sunday and during funerals for many centuries and can be grown in the laboratory.
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See full question below
Q.
The yew tree is a rare and slow-growing tree. Paclitaxel is an anticancer compound obtained from the bark of the yew tree. The extraction of the compound is expensive and damages the yew tree. Scientists have isolated and grown stem cells from a yew tree that could be used to produce paclitaxel.
Which statement describes an advantage of using stem cells from a yew tree to produce paclitaxel?
answer choices
Stem cells can be grown and reproduced in a laboratory
Stem cells can differentiate into cells of a different species.
Stem cells from plants are more useful in producing animal protein.
Stem cells from plants are less likely to cause unfavorable mutations than stem cells from animals.
Compare and contrast exocrine and endocrine glands. Provide an example of an exocrine gland, an exocrine secretion, an endocrine gland, and an endocrine secretion.
After comparing exocrine and endocrine glands it can be said that the Exocrine manufactures and secretes its products outside the body, whereas the Endocrine manufactures and secretes its products into circulation.
Exocrine glands release their materials onto the surfaces of your body through ducts. Endocrine glands, on the other hand, discharge their chemicals right into your blood. We refer to them as ductless glands.
Sweat, salivary, sebaceous, and mucous glands are a few examples of exocrine glands. The pituitary gland, ovaries, testicles, thyroid, and adrenal glands are a few examples of endocrine glands.
Exocrine glands include your pancreas and liver. Through ducts in your digestive tract, your liver secretes bile. Pancreatic juices are secreted by your pancreas and enter your digestive tract through ducts. However, your pancreas and liver are also regarded as endocrine glands.
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In a certain population of rabbits, the allele for brown fur is dominant over the
allele for white fur. If 10 out
of 100 rabbits have white fur, what is the allele
frequency for the recessive allele?
The Hardy-Weinberg equation is:
[homozygous dominant]2 + 2[heterozygous] + [homozygous recessive]? = 1
A. 0.32
B. 0.90
C. 0.10
D. 0.95
Answer:
b because 2+2+675474 then divide ➗ and multiple then you will get 90
how are human muscle cells different from the other cells
Human muscle cells are different from the other cells because these cells has multinucleated nature.
Why muscle cells are different in structure?The most obvious difference between muscle cells and the majority of other cells is their multinuclear nature. Depending on its size, a separate fiber may contain hundreds of nuclei. They are located just beneath the sarcolemma and seem to be randomly issued along the length of the fiber.
A single muscle cell contains many nuclei, which are thumbs against the cell membrane. A muscle cell is a long cell compared to other forms of cells, and many muscle cells join together to form the long fibers found in muscle tissue.
So we can conclude that Muscle cells are usually known as myocytes, are the cells that makeup muscle tissue.
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The complementary DNA sequence of AATTCG is:
Answer:
Complementary DNA sequence of AATTCG is: TTAAGC
In a DNA sequence A forms complementary double hydrogen bond with T & G forms triple hydrogen bond with C.
Both the nucleotide stands in DNA are antiparallel so they form complementary base pairs.
Please help with this. Thank you
In the following map, the highest recombination is seen between the E and G genes. They have the highest gene distance between them, which is 12 map units. The last option is the correct answer.
What is a recombination?Recombination between two genes takes place when there is enough distance between them for the genes to cross over. More is the distance, more is the chance, and less is the distance, less is the chance. When two genes are close to each other and don't allow crossing over, they are called "completely linked gene". Due to recombination, the variation is seen in the offspring. The crossing takes place during the pachytene stage of prophase I of meiosis.
Hence, the correct answer is the last option, as the maximum distance between E and G is seen, which is 12 map units.
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Directions: Fill in the blanks.
Endocrine System
1. The endocrine system is made up of
2. An example of a hormone is
called the
3.
4. Hormone levels are controlled by
Nervous System
1. The
2. The nervous system and the
is the fight or flight hormone.
2. The
Body Systems
Circulatory System
1. The function of the circulatory system is
and nerves are part of the nervous system.
3. Red blood cells carry
4.
that make
which lowers blood sugar. It is made in a gland
clot the blood.
mechanisms.
is the major organ of the circulatory system. Its function is to
Respiratory System
1. The function of the respiratory system is
2.
is breathed in while
system are called the control systems.
White blood cells
is released as waste.
How do changes in stream flow affect the size and shape of a river delta?
Answer:
How do changes in stream flow affect the size and shape of a river delta?
Explanation:
Look at sucrose, a disaccharide, and cellulose, a polysaccharide, on the carbohydrate page. How do you think these two molecules were formed?
Answer:
don't worry i help you
Explanation:
Glucose and fructose are linked to form sucrose.
Cellulose is a polymer of glucose.
Sucrose and cellulose monomers are linked through a glycosidic bond to form disaccharides and polysaccharides respectively.
All Correct Statements Pertaining to the Dihydroxyacetone Phosphate Reaction Step in Glycolysis.
ATP is Needed to Generate Dihydroxyacetone Phosphate.
Fructose is Needed to Generate Dihydroxyacetone Phosphate.
Glucose-6-Phosphate is Needed to Generate Dihydroxyacetone Phosphate.
Inorganic Phosphate is Needed to Generate Dihydroxyacetone Phosphate.
None of the Statements are Correct.
All Correct Statements Pertaining to the Dihydroxyacetone Phosphate Reaction Step in Glycolysis
Conversion of dihydroxyacetone phosphate in glycolysis requires glucose-6-phosphate to generate dihydroxyacetone phosphate. So the correct option is C.
What is glycolysis?Glycolysis is the process of forming pyruvate from the catabolism of glucose molecules. This process creates ATP, NADP, and FADH₂ molecules. The dihydroxyacetone phosphate (DHAP) reaction step involves the conversion of DHAP to glyceraldehyde-3-phosphate (G3P) by the enzyme triose phosphate isomerase. This enzyme catalyzes the isomerization of a tri-carbon sugar to another tri-carbon sugar (G3P).
Dihydroxyacetone phosphate is in the glycolytic pathway and, along with glyceraldehyde-3-phosphate, is one of two products formed when fructose-1,6-bisphosphate is broken down. It is readily and reversibly isomerized to glyceraldehyde-3-phosphate.
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Drag each tile to the correct box.
Beginning with the flow phase, arrange the biochemical processes in the order in which they occur during the menstrual cycle.
FSH and LH stimulate the follicles to develop and the oocyte to produce estrogen.
A breakdown of corpus luteum causes progesterone levels to drop.
A spike in LH causes the follicle to rupture.
The endometrial lining breaks down and low levels of estrogen stimulate the pituitary to release FSH and LH.
Rising estrogen levels suppress FSH production and development of other follicles.
High progesterone levels maintain the endometrial lining of the uterus.
The menstrual cycle begins with a change in hormonal level and maintaining the endometrial lining of the uterus.
How does hormone level change during the menstrual cycle?The endometrial lining is a breakdown, and low levels of estrogen cause to stimulate the pituitary to release FSH and LH, this hormone stimulateing follicles for developing oocytes to produce estrogen.
When estrogen level is at a peak, suppresses FSH production and develops other follicles, a gradual increase in LH causes the follicle to rupture then high progesterone levels maintain the endometrial lining.
Therefore breakdown of the corpus luteum this progesterone levels to drop and complete the cycle.
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In your lab group, you combined vinegar and baking soda and observed the results shown in the picture. Which statement is true regarding light wave movement?
Answer:
Explanation:
The two products generate quite a reaction. When vinegar (dilute acetic acid) and baking soda (sodium bicarbonate) mix together, the pair "foams up" to produce carbon dioxide gas, as well as liquid water, acetate ions and sodium ions. The carbon dioxide gas is what produces the bubbles
The body fluid of sharks has a much lower concentration of sodium chloride than that of the surrounding seawater, and sharks are able to remain in osmotic equilibrium with the external environment. How can this be the case?
The body fluid of sharks has a much lower concentration of sodium chloride than that of the surrounding seawater, and sharks are able to remain in osmotic equilibrium with the external environment. Sharks store enough urea to match the total solute concentration of the surrounding seawater
An osmoconformer's internal bodily fluids are best described as having about the same total solute concentration as the surrounding environment. The sharks may use their amazing capacity to absorb ammonia to increase their urea reserves. The fish, which are scavengers, frequently go extended periods without eating, depriving themselves of the raw protein source necessary to keep their tissues' urea levels at a healthy level.
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what is the most common geological feature that is not located on a plate boundary?
according to chargaff's rule of base pairing, which of the following is true bout DNA
According to Chargaff's rule of base pairing | A | = | T | and | C | = | G | are correct about DNA.
Chargaff's rule:
It states that in the DNA of any species or any organism, there is always equity in quantity between the bases A and T and between the bases G and C.
Where A is adenine, T is thymine, G is guanine, and C is cytosine
It is also known as Chargaff's ratio, which was discovered by Erwin Chargaff at Columbia University.
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Although part of your question is missing, you might be referring to this full question:
According to chargaff's rule of base pairing, which of the following is true bout DNA
a. |A| = |T|, and |C| = |G|
b. |A| = |C|, and |T| = |G|
c. |A| = |G|, and |T| = |C|
d. |A| = |T| = [C] = |G|
How has the flow of carbon changed between the atmosphere and the ocean?
The flow of carbon between the atmosphere and the ocean changed in the following ways-
The concept sounded straightforward enough: the oceans would absorb more carbon dioxide the more it was released into the atmosphere by burning fossil fuels. The ocean would keep soaking up more and more carbon dioxide until ocean warming caused ocean circulation to shut down. When the water trapped at the surface became saturated, the ocean's uptake of carbon would slow down.
The ocean, however, also contributes to the slightly faster carbon cycle. Carbon dioxide gas dissolves in and ventilates out of the ocean in a constant exchange with the atmosphere at the surface, where air meets water. As soon as carbon dioxide enters the ocean, it combines with water molecules to release hydrogen, increasing the ocean's acidity. Bicarbonate ions are created when the hydrogen reacts with the carbonate left over from rock weathering.
Prior to the industrial revolution, the ocean released carbon dioxide into the atmosphere in an equal amount to the carbon it absorbed from rock weathering. The ocean now removes more carbon from the atmosphere than it produces, however, as a result of rising atmospheric carbon concentrations. The ocean will eventually absorb up to 85% of the excess carbon that mankind have added to the atmosphere by burning fossil fuels, but because the process depends on the passage of water from the ocean's surface to its depths, it will take millennia to complete.
The rate at which the ocean removes carbon dioxide from the atmosphere is in the meantime governed by winds, currents, and temperature. Over the few thousand years between the ice ages, it is likely that variations in ocean temperatures and currents helped take carbon from and subsequently restore carbon to the atmosphere.
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PNS ( Periperal Nervous System) Detects _____.
what are the two components of the equation for the free energy stored in the proton gradient called?
The two components of the equation for the free energy stored in the proton gradient are :
ΔG = 2.3RTΔpH + FΔψ ΔpH= H+ concentration gradientΔψ= voltage difference (electrical potential)Both of these two independent variables (ΔpH and Δψ ) supply energy and individually contribute to ATP synthesis.
In a mitochondrial membrane, a proton gradient is created when the proton concentration is greater outside the inner membrane than inside the membrane. It develops as a result of the respiration's electron transport chain. Proton gradients drive ATP synthesis, which is carried out by the enzyme ATP synthase.
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heat from earths ____ can cause rocks to ____ and move like putty
Answer:
hey sophia hyyyy hru doinh
if all the kinetochores are not attached to spindle fibers, then what would we likely observe in the cell?
The kinetochores are not connected to spindle fibers, then what could we possibly study inside the cellular the sister chromatids remain together, delaying anaphase.
The kinetochore is a complicated shape that establishes the attachment of spindle microtubules to chromosomes and is consequently crucial for devoted chromosome segregation.
The kinetochore performs an crucial function in facilitating chromosome segregation in some unspecified time in the future of mobile department. This big protein complex assembles onto the centromere of chromosomes and permits their attachment to spindle microtubules all through mitosis.
The number one difference amongst centromere and kinetochore is that centromere is the location in which the two sister chromatids are held collectively after the replication of chromosome in which kinetochore is the protein complicated on the chromosome in which spindle fibers are connected throughout cell branch.
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Saltwater Ecosystem Concept
Saltwater Ecosystem Concept
They are called ecosystems. oceanic where the oceans are included, seas, marshes and others. salt water shows variations in concentration of soluble salts and minerals, on the contrary of freshwater ecosystems.
It is known that marine ecosystems include waters with a high concentration of salts; in this group are: seas, oceans, marshes and coral reefs, among others.
Which best defines meroplankton?
O organisms that spend their entire life as plankton
O organisms that spend their larval or juvenile stage as plankton
O organisms that are holoplankton
Oorganisms that are phytoplankton
Organisms that are holoplankton. Meroplankton are a diverse group of aquatic organisms with life cycles that include both planktonic and benthic stages.
The larval stages of bigger organisms make up a major portion of the meroplankton. Holoplankton, which are planktonic organisms that remain in the pelagic zone as plankton during their entire life cycle, can be compared with meroplankton.
Many meroplankton go on to the nekton or adopt a benthic (typically sessile) existence on the bottom after spending some time in the plankton. Benthic invertebrate larval stages make up a large component of planktonic populations. For many benthic invertebrates, the planktonic larval stage is very important for the dispersal of their young.
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