Place the events that control the progression of cells through the G/S checkpoint of the cell cycle in order.
First event
Last event Cyclins D and E Inactivated RB releases bind CDK proteins. active E2F protein. Cyclin-CDK complexes E2F transcribes genes required for DNA replicat phosphorylate RB proteins.
Answers
The metaphase-to-anaphase transition, sometimes known as the spindle checkpoint, are the three major checkpoints in the cell cycle.
The G1 checkpoint, also known as the Start or restriction checkpoint or Important Checkpoint, the G2/M checkpoint, Growth-dependent cyclin-dependent kinase (CDK) activity encourages DNA replication and starts the transition from G1 to S phase during G1 phase. By causing alterations in transcription across the entire genome, CDK activation sets off a positive feedback loop that drives up CDK activity even more, committing the cell to division. Eukaryotes often stop the cell cycle at the G1 checkpoint if the environment prevents cell division or if the cell spends an extended amount of time in G0.
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Related Questions
What is the most significant thing I can do to reduce X-ray exposure to my patients during fluoroscopy?
Answers
By minimizing the fluoroscopy time. the effect of X-ray exposure on the patient can be reduced.
Fluoroscopy is a medical procedure in which x-rays are passed through the body for a period of time to show the movement of parts of the body on video in real-time. Minimizing fluoroscopy time has proven to be one of the most effective ways to reduce radiation dose to patients and staff during fluoroscopy. An apron or thyroid shield with a lead equivalent thickness of 0.5 mm attenuates more than 95% of his X-rays at typical X-ray energies used in fluoroscopy. Always use movable barriers to increase shielding between you and stray radiation. Tight collimation reduces scatter, significantly reducing staff dose and patient dose.
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identiying Parts of Spheres Use the drop-down menus to identify the spheres to which each part belongs.
A lake is part of the ___
Water vapor in the air is part of the___
Glacier and iceburgs are part of the___
The rocky mountains are part of the___
A deer is part of the____
Answers
Answer:
Answer is
A lake is part of the hydrosphere.
Water vapor in the air is part of the atmosphere.
Glacier and icebergs are part of the cryosphere.
The Rocky Mountains are part of the geosphere.
A deer is part of the biosphere.
Which of the following is NOT molecular evidence that supports the theory that all life evolved from a single common ancestor?A. All life has a universal genetic code that works the same way in every organism on Earth.B. ATP is a universal energy storage molecule for all organisms.C. All proteins in every organism are formed from the same 20 amino acids.D. All organisms have Pentalipid membranes surrounding them.
Answers
The correct answer is D. All organisms have Pentalipid membranes surrounding them. Most organisms have a bilipid layer, although several microbes have different characteristics in its cell membrane.
Through which process do producers
make food?
A. decomposition
B. photosynthesis
C. fertilization
D. cropping
Answers
Answer:
B. photosynthesis
Explanation:
Plants are producers, they make their own food by way of photosynthesis and supply the rest of the food web with food after being eaten. Given that they are producers, they make food, and they do so through photosynthesis, the answer is B.
This question is really easy please help
Answers
Answer:
the answer is (b)
Explanation:
if it really easy why you didn't get it not being mean or nun anyways hope this helps
11. Which of these are objects that circle stars other than Earth's sun? Choose the correct answer.
Debelas
exoplanets
planetesima
nebulas
Answers
Answer:
Exoplanets
Explanation:
Exoplanets (also known as extrasolar planet) are other planets outside the solar system. Exoplanets are of different categories, some of them orbit around other stars while some called rogue planets orbit the galactic center.
There are more than 4000 exoplanets which have been discovered, these planets have been discovered using the process of Transit photometry and Doppler spectroscopy.
Studies of vacuoles reveal that they are *
1 point
A) sites for the attachment of spindle fibers
B) sites of cellular respiration
C) reservoirs for water and dissolved minerals
D) information centers for all cellular activities
Answers
hello please help i’ll give brainliest
Answers
Answer:
Landslide
Explanation:
Landslides are sudden falls of rocks due to gravity.
which of the following is not true about the earliest primate-like fossils? a) they were rodent-like, resembling tropical squirrels b) they had large brains relative to living primates c) some exhibited a nail instead of a claw on the hallux or big toe d) they exhibited primate-like cuspal patterns on their molar teeth
Answers
The most primitive primate known from reliable fossil evidence is Dryomomys. (Only isolated teeth and jaw fragments from the ape Purgatorius, which dates back 65 million years, have been discovered.
Which of the following concerning the oldest fossils that resemble primates is untrue?Palaeontologists have discovered the earliest primate skeleton ever discovered, which belonged to an animal that lived among trees 55 million years ago in what is now central China.
Can you describe the appearance of the early primates?Proto-primates are the first mammals that resembled primates. They were around the size of squirrels and looked like tree shrews. The fossil data now available is widely dispersed and comes primarily from North Africa.
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What is a characteristic of quasi-experimental/causal-comparative research? *A. assignment to groups based on some pre-determined characteristicB. does not establish cause and effect relationshipsC. has the highest degree of control over the factors being examinedD. assignment to groups is random in nature
Answers
EXPLANATION: A quasi-experimental research is not true experimental research because instead of assigning participants randomly in either the control group or treatment group, it is pre-determined. The control and treatment groups also have different conditions and variables being tested that the researchers themselves do not have control over. This type of experiment is often conducted in research in educational settings.
ANSWER: A. assignment to groups based on some pre-determined characteristic
4 ( 3x+10y=54 and x=y+5 )
Answers
Answer:
x−y=9 , x+y=6
4x+4y=1
, 6x−y=1
x2−y=2
, 2x−y=−1
Explanation:
Portions of eukaryotic mrna sequence that are removed during rna processing are ________.
Answers
The portions of eukaryotic mRNA sequences that are removed during RNA processing are introns.
An intron is a region of a gene that does not stay in the final, mature mRNA molecule after that gene is translated and does not encode the amino acids that make up the protein for which that gene is responsible. The majority of the human genome's protein-coding genes are composed of exons and introns.
The most important function of introns is alternative splicing, which enables many proteins to be produced from a single gene. Some introns go through further processing after being spliced so they can encode functional RNA molecules.
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Which individuals could be only heterozygous (Aa)? Select all that apply. I-1 I-2 I-4 II-1 II-4 II-8 III-1 III-5 IV-1 IV-7
Answers
II-8 , III-1 , III-5 are individuals could be only heterozygous (Aa) .
What is heterozygous (Aa) ?
Heterozygous (Aa) carriers cannot be considered healthy. They suffer from the illness in the same way as homozygous dominant (AA) people.
Children of parents who only have one copy of a dominant allele for a dominant condition have a 50% risk of developing the disorder themselves.
What is AA genetics and AA?
Three distinct genotypes—"AA," "aa," and "Aa"—are available if the dominant allele is denoted by "A" and the recessive allele by "a." Because the alleles in the pair are identical, i.e., both dominant or both recessive, the terms "homozygous" and "AA" are used to describe the pairs.
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Which is the best way to corroborate information?
Find biased sources that oppose your position on a scientific topic.
Find unbiased sources that support your position on a scientific topic.
Find unbiased sources that oppose your position on a scientific topic.
Find biased sources that support your position on a scientific topic.
Answers
Answer:
The second choice
Explanation:
corrorobrate means to confirm something.
The best way to corroborate information is to find unbiased sources that support one position on a scientific topic and that is the second option, as scientific research should be unbiased.
What is the significance of biasness in the scientific research?Because the chosen topic provides a single person's perspective, which may not be accurate or contain all of the information so the biasness must be avoided, the research must be from different people's perspectives. It explains that different directions can be the best way to conduct scientific research and that it is important to get the most well-rounded and accurate understanding of a scientific topic.
Hence, the best way to corroborate information is to find unbiased sources that support one position on a scientific topic and that is the second option, as scientific research should be unbiased.
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You perform several monohybrid crosses as described above. You observe that in the offspring 121 dragons are green and 79 dragons are red. Calculate the expected value and perform a Chi-Square Analysis on your data. Does the data conform to Mendel's Law of Segregation? (df=1, critical value = 3.84)
Answers
Answer:
Follows are the solution to this question:
Explanation:
The null Hypothesis = observed values do not deviate from the monohybrid F2, which ratio is 3:1
Static test:
please find the attachment of the table.
In the Inference, the chi-square value measured, implying 22.43 and higher than 3.84 at 1 DF, is the chance for 0.05. Its null hypothesis will be dismissed in Mendel's segregation legislation won't confirm the above data.
PLEASE HELP ME! I HAVE NO BRAIN CELLS.
Some minerals are evenly distributed around the planet, while other minerals are quite rare. Why are some minerals so rare and unevenly distributed?
A. Certain minerals form only under high heat and pressure that develop near volcanoes.
B. Certain minerals form only in Earth's crust, so they are difficult to locate.
C. Certain minerals form only in specific climates, and not all climates, are the same around the world.
D. Certain minerals form only in the extreme heat found at the bottom of lakes and rivers.
Answers
Answer:
C
Explanation:
Minerals, fresh water, and biosphere resources are distributed unevenly around the planet as a result of past geologic processes. ... Mineral, fresh water, ocean, biosphere, and atmosphere resources are limited, and many are not renewable or replaceable over human lifetimes.
The option (C) is correct. Certain minerals form only in specific climates, and not all climates, are the same around the world.
What are minerals?A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties. Common minerals include quartz, feldspar, mica, amphibole, olivine, and calcite.
Moreover, the major minerals, which are used and stored in large quantities in the body, are calcium, chloride, magnesium, phosphorus, potassium, sodium, and sulfur. The trace minerals are just as vital to our health as the major minerals, but we don't need large amounts.
Therefore, economic minerals are used in a wide range of applications related to construction, manufacturing, agriculture and energy supply. Economic minerals include: Energy minerals used to produce electricity, fuel for transportation, heating for homes and offices and in the manufacture of plastics.
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Modern biotechnology is largely dependent on our understanding of ... called _____, and they create a specific function or characteristic in an organism
Answers
Modern biotechnology relies heavily on our understanding of genes, which are segments of DNA that carry specific instructions for creating functions or characteristics in organisms.
Genes are fundamental units of heredity found in all living organisms. They contain the genetic information necessary for the development, functioning, and reproduction of an organism. Our understanding of genes, including their structure, regulation, and manipulation, forms the basis of modern biotechnology.
By studying genes, scientists can identify and isolate specific segments of DNA responsible for desired traits or functions in organisms. This knowledge allows them to manipulate these genes through techniques such as genetic engineering or gene editing. These techniques enable the transfer of genes across different species, resulting in the creation of organisms with novel characteristics or improved traits. For example, genetic modification has been used to develop crops with increased resistance to pests or herbicides, as well as the production of pharmaceuticals through the use of genetically engineered microorganisms.
Understanding genes also plays a crucial role in fields like genomics, personalized medicine, and gene therapy. By analyzing an individual's genetic makeup, scientists can gain insights into their susceptibility to certain diseases, develop targeted treatments, and even modify genes to correct genetic disorders.
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5. Which of the following statements best describes the response of finches to drought on the Galapagos Islands?
O A During drought, individual finches saw that large, hard seeds were the only available food. To crack these harder seeds, individual finches grew their beaks
larger, resulting in an increased average beak depth
OB During drought, finches struggled to open harder seeds All the scraping and pecking wore down their beaks, resulting in a reduced average beak depth
OC. During drought, only finches with larger-than-average beaks were able to crack the hard seeds that were available. These finches survived while smaller-
beaked finches died, resulting in an increased average beak depth in the population
O D. During drought, finches with smaller beaks (and smaller bodies) had an advantage. With reduced food supplies, larger finches (with larger beaks) were
more likely to starve. The result was a decrease in average beak depth
Answers
Answer:
it is c got it right on the quiz
Explanation:D hope this helps
A. During drought, individual finches saw that large, hard seeds were the only available food. To crack these harder seeds, individual finches grew their beaks larger, resulting in an increased average beak depth
How large beak finches survive drough condition?During drought, finches with larger beaks survive because they were able to crack the hard seeds that were available in the drought situation while on the other hand, the smaller beaked finches died due to unavailability of food which result in an increased average beak length in the population.
So we can conclude that option A is the right answer.
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Change cannot occur without it
molecule
energy
organism
chemical reaction
matter
cellular respiration
Answers
Answer:energia
Explanatio
Start off with 2,500 plants of which 50% have medium-tip leaves, 25% have wide-tip leaves, and 25% have drip-tip leaves. Each circle in your simulation will represent 125 organisms. Calculate how many circles you need for each trait, and then create your simulation. Be sure to include a key that states the color coding for each trait
Answers
robbing someone of oxygen. 2: to pass away from lack of air. to choke or smother someone or something. The flowers we planted are being choked out by weeds. 4. to experience a dearth of fresh air.
With an atomic number of 8 and the chemical symbol O, oxygen is the eighth chemical element. It belongs to the chalcogen group in the periodic table, is a very reactive nonmetal, and is an oxidising agent that easily forms oxides with most elements as well as with other compounds. The most plentiful element on Earth and the third most prevalent element in the universe (after helium and hydrogen) is oxygen. The element forms dioxygen, an odorless and colorless diatomic gas with the formula O2 when two of its atoms come together at ordinary temperature and pressure. Currently, 20.95% of the Earth's atmosphere is made up of diatomic oxygen gas, however, over very long stretches of time, this percentage has shifted significantly. The Earth's crust is over 50% oxides, which are composed of oxygen.
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Use your prior understanding of spheres to answer the following question. The ________________ and the __________________ will increase the rate of chemical weathering.
Group of answer choices:
hydrosphere and the atmosphere
lithosphere and the geosphere
biosphere and the hydrosphere
lithosphere and the atmosphere
asthenosphere and the hydrosphere
atmosphere and the biosphere
Answers
Answer:
the atmosphere and the biosphere
The hydrosphere and the atmosphere will increase the rate of chemical weathering. Therefore, option (A) is correct.
What is chemical weathering?Chemical weathering is a natural process that breaks down rocks and minerals into smaller particles through chemical reactions. This process is caused by the interaction between rock or mineral surfaces and water, atmospheric gases, or biological fluids, resulting in a change in the chemical composition of the rocks or minerals. The most common types of chemical weathering are oxidation, hydrolysis, and carbonation.
Oxidation occurs when oxygen in the air reacts with certain minerals, causing them to rust or corrode. Hydrolysis occurs when water chemically breaks down minerals, such as feldspar, resulting in the formation of clay minerals. Carbonation occurs when carbon dioxide in the atmosphere dissolves in water and reacts with minerals, such as limestone, resulting in the formation of calcium carbonate. Chemical weathering can play an important role in the formation of soil, the cycling of nutrients, and the shaping of landforms.
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If someone tells you that scientific knowledge cannot be changed. How would you answer that statement. Use an example of how scientific knowledge has been changed.
Answers
Answer:
I would say Scientific knowledge is always being changed and performed in different ways. Scientific knowledge is always being changed as scientist are experiencing and collecting new information everyday using the scientific method. ( please let me know if this is wrong ) !
Answer:
Scientific knowledge can be changed.
Explanation:
For example, the Cell Theory. The Cell Theory has been changed over and over again, leading to what it is know. People didn't have microscopes when the cell theory was first discovered, so when microscopes came along, we found out more about cells and revised the cell theory.
After each bar press, a laboratory rat receives electric stimulation to its brain. The rate of bar pressing increases. This is an example of responses positive reinforcement positive reinforcement negative reinforcement negative reinforcement secondary reinforcement secondary reinforcement negative punishment negative punishment positive punishment.
Answers
The electric shock is a negative reinforcer—it is an aversive stimulus that encourages the bar-pressing behavior—when a rat is getting one and presses a bar to stop it. The two ways that negative reinforcement is used are escape and avoidance conditioning.
what is negative reinforcement ?The technique of negative reinforcement can be applied to aid in teaching particular actions. When something unpleasant or uncomfortable is taken away in response to a stimulus, this is known as negative reinforcement. With the assumption that the unpleasant thing would be removed, the goal behavior should gradually get better over time.
what is reinforcement ?In order to improve the possibility that a behavior will occur again in the future, reinforcement involves giving or taking something away after it occurs.
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Comment on the QOD for the gas law lab: What effect does the limiting reactant mass have on the molargas volume? Hint: This question is asking about MOLAR gas volume, not simply gas volume.
Answers
The limiting reactant mass affects the molar gas volume in a chemical reaction according to gas laws. In a reaction, the limiting reactant is the substance that determines the maximum amount of product that can be formed, as it is completely consumed during the reaction.
Explanation:
1. When a reaction takes place, the limiting reactant is consumed first, and the reaction stops once it is fully used up.
2. As the limiting reactant determines the amount of product formed, it directly influences the number of moles of gas produced in the reaction.
3. According to the Ideal Gas Law, PV = nRT, where P is pressure, V is volume, n is the number of moles of gas, R is the gas constant, and T is the temperature. From this equation, it is clear that the number of moles (n) directly affects the volume (V) of the gas.
4. Molar gas volume refers to the volume occupied by one mole of gas under specific conditions of temperature and pressure. Since the limiting reactant determines the number of moles of gas produced, it directly affects the molar gas volume.
In conclusion, the mass of the limiting reactant has a significant effect on the molar gas volume, as it determines the maximum number of moles of gas that can be produced in a chemical reaction.
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The comment on the QOD for the gas law lab is relevant as it emphasizes the importance of understanding the concept of molar gas volume in relation to the limiting reactant mass in the experiment.
What is limiting reactant?Limiting reactant is the reactant that is completely consumed in chemical reaction, limiting the amount of product that can be formed.
Molar gas volume is the volume occupied by one mole of gas at a given temperature and pressure.
Therefore, understanding the effect of limiting reactant mass on the molar gas volume is crucial for accurately interpreting the results of the gas law experiment. It is important to note that molar gas volume is not the same as the volume of the gas itself, as molar gas volume takes into account the amount of gas particles (moles) in given volume.
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Will mark brainiest ; worth 24 points ; please help And also can you separate them by claim , evidence and reasoning
Answers
Based on the evidence, Sample B is a better choice for a marathon runner before a big race.
What makes Sample B better?Claim: Sample B is a better choice for a marathon runner before a big race.
Evidence:
Sample B has more calories, carbohydrates, and protein than Sample A.Marathon runners need a lot of calories, carbohydrates, and protein to fuel their long runs.Carbohydrates are the body's main source of energy.Protein is needed for muscle repair and growth.Reasoning:
Sample B has more of the nutrients that marathon runners need to fuel their long runs and recover from their races. Therefore, Sample B is a better choice for a marathon runner before a big race.
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Whicho al resources will be mostarted as people to meet the growing demand for?
solar ene
Answers
Answer:
I don't really get the question.
Explanation:
but from what I understand, biomass, water(hydro), wind and thermal. will be needed, as the are part of renewable energy source.
Refer to the illustration above. Mitosis begins with the stage shown the the diagram.
Answers
Answer:
Explanation:
Pmat...
prophase
metaphase
anaphase
telophase
Which two terms are things that are found in the chloroplast?
Answers
Answer:
Stroma.
Inner membrane.
Outer membrane.
Thylakoid membrane.
Intermembrane Space.
and Chlorophyll
circadian rhythms are partially controlled by the release of which hormone?
Answers
Melatonin is the hormone responsible for partially controlling circadian rhythms, with its release being regulated by the suprachiasmatic nucleus in response to light exposure.
Melatonin is a hormone that plays a crucial role in regulating circadian rhythms. The production and release of melatonin are primarily controlled by the suprachiasmatic nucleus (SCN) in the brain, which acts as the body's internal clock.
The SCN receives information about light exposure from the eyes and sends signals to the pineal gland to regulate melatonin production. Melatonin is primarily released during periods of darkness and helps to promote sleep by signaling to the body that it is time to rest.
The release of melatonin is inhibited by exposure to light, particularly blue light, which is why it is recommended to limit exposure to bright screens before bedtime.
Melatonin is the hormone responsible for partially controlling circadian rhythms, with its release being regulated by the suprachiasmatic nucleus in response to light exposure.
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People's choices can have a positive or negative effect on their health. Describe one positive choice and one negative health choice a person could make. Be sure to explain how each could impact an individual's health and, if applicable, the health of others.
Answers
Answer: One positive is they can eat whatever they want, whenever they want. (If they have money) a negative also since people have the freedom to choose what they eat it can impact on their health.
Explanation: Positive Explanation: if someone wanted to have a good cake every once in awhile they can, because no one is telling them not to(unless they don't have money, or is dietbet/on a diet.)
Negative: Since people are eating whatever they want they can CAUSE SERIOUS HEALTH PROBLEMS, causing you to be diabetic, have cancer, poor exercise also can lead to not be able to walk everyday, being unable to walk, can lead to early death. It could affect others because they'll be worried about you, maybe even have to pay for your house bill because you can't work. problems can lead up to more problems.
One positive choice someone can make would be drinking more water. One negative choice someone can make would be smoking too many cigarettes. Drinking more water can boost your health by decreasing chances of digestive problems and increasing blood pressure. Also, smoking too many cigarettes can lead to heart diseases, lung diseases, and diabetes.