A lab group wishes to determine the volume of some zinc beads. They fill a graduated cylinder to the 42.55-mL mark with water. They carefully add the beads to the cylinder. The water level rises to 76.85 mL. What value should they report as the volume of the zinc beads?
Answers
The volume of the zinc beads will be 34.30 mL
The principle is such that a floating or sinking liquid will always displace its volume in any liquid.
As we know that floating or sinking liquid will always displace its volume in any liquid. So, the volume of the solid is calculated as the differences between the final and the initial cylinder readings.
Here initial reading = 42.55 mL,
final reading = 76.85 mL
Volume of zinc beads = 76.85 - 42.55
= 34.30 mL
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34.30 mL will be The volume of the zinc beads
The principle is that a floating or sinking object, liquid will always be displaced and volume of displaced liquid is equal to the volume of object.
So, the volume of the solid object is calculated as the differences between the final and the initial cylinder readings.
Vsolid = ΔV = V2 – V1.
V1 is the volume of the liquid.
V2 is the sum of the volume of the liquid and the solid object
Notice that V2 is greater than V1
Here initial reading=V1 = 42.55 mL, final reading=V2 = 76.85 mL
The volume of the solid object is
Volume of zinc beads = 76.85 - 42.55 = 34.30 mL
This is because the volume of the liquid and the volume of the solid object are additive.
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Related Questions
What is pretexting? How is this used?
Answers
Answer:
Pretexting is a method of inventing a scenario to convince victims to divulge information they should not divulge. Pretexting is often used against corporations that retain client data, such as banks, credit card companies, utilities, and the transportation industry.
Answer:
Pretexting is a social engineering tactic that uses deception and false motives. ... The data collected is then used to manipulate and deceive the victim. The main goal of the threat actor is to gain the target's trust and exploit it for financial or political gain. A pretext attack can occur in person or over the phone.Explanation:
Hopes this helps. Mark as brainlest plz!How does empirical differ from expert? Why would science place a greater reliance on the former, rather than the latter?
Answers
Empirical and expert knowledge are two different types of knowledge used in various fields, including science.
Science places a greater reliance on empirical knowledge because of objectivity, verification, elimination of Bias, consistency and predictability.
Here's how they differ and why science places a greater reliance on empirical knowledge:
Empirical Knowledge: Empirical knowledge is based on observation, experience, and evidence obtained through the senses or through direct experimentation. It relies on the collection and analysis of data to draw conclusions and make predictions. Empirical knowledge is objective, verifiable, and subject to scrutiny and replication. It forms the foundation of scientific inquiry and is crucial for developing theories and models.Expert Knowledge: Expert knowledge is acquired through extensive study, training, and experience in a specific field. It is based on the expertise and judgment of individuals who have specialized knowledge and skills. Expert knowledge is subjective and can vary among different experts based on their background, biases, and interpretations.Science places a greater reliance on empirical knowledge for several reasons:
Objectivity and Verification: Empirical knowledge is based on observable phenomena and can be independently verified by multiple researchers. It allows for the replication of experiments and observations, ensuring the reliability of the results.Elimination of Bias: Empirical knowledge aims to minimize personal bias and subjective interpretations by relying on systematic and rigorous methods of data collection and analysis. This reduces the influence of individual expertise or opinions.Consistency and Predictability: Empirical knowledge provides a framework for developing theories and models that can make predictions and explain natural phenomena consistently. It allows for the formulation of general principles and laws that apply universally.To know more about empirical knowledge
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What is the end result of using the technique known as polymerase chain reaction (PCR) on a DNA fragment
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The end result of using the technique known as polymerase chain reaction (PCR) on a DNA fragment is that it amplifies small fragments of DNA.
The polymerase chain reaction (PCR), sometimes known as "molecular photocopying," is a quick and low-cost method for "amplifying" or copying tiny DNA sequences. Without PCR amplification, examinations of isolated fragments of DNA are almost difficult since considerable volumes of a sample's DNA are required for molecular and genetic analyses.
The DNA generated by PCR can be used in a variety of laboratory techniques after it has been amplified. For instance, PCR was a key component of most mapping techniques used in the Human Genome Project (HGP). A number of laboratory and clinical methods, such as DNA fingerprinting, the detection of germs or viruses (especially AIDS), and the identification of genetic abnormalities all benefit from the use of PCR.
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Based on the images taken through Stella’s microscope, which cell structures could be clearly identified using a compound microscope?
Answers
Answer:
Use 400 x in order to study the structure clearly.
Explanation:
Cell structures could be clearly identified when magnify the microscope about 400 x by using a compound microscope. Due to high magnification power of compound microscope, the individual is able to see different structures that are present in cells. while by using lower magnification, the individual is unable to see different structures clearly. So use high magnification in order to study the cell.
what is the approximate frequency of mutation resulting from dna polymerase after proofreading and repair mechanisms occur?
Answers
The approximate frequency of mutation resulting from DNA polymerase after proofreading and repair mechanisms occur is estimated to be around 1 in 10 billion base pairs. However, it is important to note that this frequency can vary depending on factors such as the type of DNA polymerase and the efficiency of the proofreading and repair mechanisms.
The approximate frequency of mutation resulting from DNA polymerase after proofreading and repair mechanisms occur is around 1 in 10^9 nucleotides.
This low mutation rate is due to the combined effects of the polymerase's proofreading activity and the DNA repair mechanisms in the cell, which work together to maintain the accuracy and integrity of the genetic information.
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What would happen if a wave is absorbed by a material? I think the waves energy would transfer to the material
Answers
Answer The energy of the wave is transferred to the
Explanation:
Place the sketches of cells undergoing meiosis I in correct order by moving them to sketch spots on whiteboard
Answers
Meiosis I progresses through the following stages: prophase, metaphase, anaphase, and telophase.
Meiosis is a type of cell division that results in the production of four gamete cells and a 50% reduction in the number of chromosomes in the parent cell. To develop egg and sperm cells for sexual reproduction, this process is necessary. In sexually reproducing organisms, meiosis is a kind of cell division that results in a reduction in the number of chromosomes in gametes (the sex cells, or egg and sperm). Body (or somatic) cells in humans are diploid, meaning they have two sets of chromosomes (one from each parent).
In meiosis I following are the stages:
During the interphase, two complete sets of chromosomes that are identical to one another are produced from the cell's DNA.Under a microscope, the replicated chromosomes condense into X-shaped structures during prophase I.Chromosome pairs align themselves side by side along the cell's equator during metaphase I.After that, during anaphase I, the meiotic spindle separates the pair of chromosomes, pulling one chromosome to one pole of the cell and the other chromosome to the other.The chromosomes finish moving to the cell's opposite poles during telophase I and cytokinesis.To know more about meiosis refer to: https://brainly.com/question/13050419
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in secondary growth, the ______________ functionally replaces the epidermis.
Answers
Answer: Periderm
Explanation: A secondary dermal tissue (periderm) that replaces the epidermis along older stems and roots.
You are working in a bacterial genetics laboratory. You are studying the biosynthetic pathway for the amino acid arginine in e. Coli and have two mutant strains: arge, and argg that were generated by transposon mutagenesis. You need to perform an experiment with these two arginine biosynthesis mutants, and so you first streak them from your stock culture onto la so that they have access to arginine. Once the strains have grown on the la plate, you streak individual colonies of both mutants onto m9, m9 ornithine, and m9 l-argininosuccinate plates that you purchased from a reputable supplier. As expected, the arge mutant cannot grow on m9 unless ornithine is supplemented. Unexpectedly, the argg mutant can grow on all three plates, whether l-argininosuccinate is supplemented or not. What is the most plausible explanation for these unexpected results?
Answers
The most plausible explanation for the unexpected results is that the argg mutation occurs downstream of the arge mutation in the arginine biosynthetic pathway. The arge mutation has a defect in the step converting ornithine to citrulline, which can only be restored by supplementing ornithine to the growth media.
However, the argg mutant can grow on all three plates without the need for L-argininosuccinate supplementation. Arginine biosynthesis in E. coli is a multistep pathway. It begins with the enzyme N-acetylglutamate synthase (encoded by the argA gene), which catalyzes the formation of N-acetylglutamate.
In the next step, N-acetylglutamate kinase (ArgB) phosphorylates N-acetylglutamate to form N-acetylglutamyl phosphate. N-acetylglutamyl phosphate is then converted to ornithine by ornithine transcarbamylase (argF) and ornithine is further converted to citrulline by argininosuccinate synthase (argG) followed by argininosuccinate lyase (argH) to form arginine.
Therefore, it can be concluded that the arge mutation occurs at the step converting ornithine to citrulline while the argg mutation occurs at the step converting argininosuccinate to arginine. The arge mutation prevents the conversion of ornithine to citrulline while the argg mutation does not affect the conversion of argininosuccinate to arginine. Thus, it can grow on all three plates without the need for L-argininosuccinate supplementation.
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A particular type of inclusion body that is used to orient bacteria in three-dimensional space in a fluid environment is the metachromatic granule. Ogas vacuole. carboxysome. sulfur granule.
Answers
A particular type of inclusion body that is used to orient bacteria in three-dimensional space in a fluid environment is a carboxysome.
In instance, cyanobacteria and other chemoautotrophic bacteria have carboxysomes, a form of inclusion body. Enzymes associated with carbon fixation, notably the enzyme RuBisCO (ribulose-1,5-bisphosphate carboxylase/oxygenase), are found in these proteinaceous compartments. It is well known that carboxysomes are essential for the cyanobacteria's photosynthesis process.
The carbon fixation process is made more effective by carboxysomes, which have a characteristic polyhedral form and are involved in the concentration of carbon dioxide (CO2) surrounding RuBisCO. In order to prevent oxygen from interfering with the activities involved in photosynthetic life, they are also in charge of maintaining the ideal level of carbon dioxide.
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How many
dependent
variables do you
want in an
experiment?
Answers
Answer:
you only want 1
Explanation:
hope this helps
Answer:
You want two dependent variables in an experiment.
Explanation:
Describe a situation in which being able to drink milk would give an individual an advantage with respect to survival and reproduction.
Answers
Answer/Explanation:
A family has a farm in which they grow crops and keep cows. During a particularly harsh winter, the crops failed to grow as well as they normally do. This means that their food supply was limited.
However, they also have cows, and cows produce milk. If this family were able to drink milk, they could get some nutrition from the milk. This means they are less likely to succumb to malnutrition and disease, and are more likely to survive and reproduce.
Lynn Margulis developed the endosymbiont theory to explain the evolution of certain eukaryotic organelles, such as chloroplasts and mitochondria. According to this theory, which of these events occurred to an ancient prokaryotic cell?
Answers
Answer: Endosymbiosis theory suggests that eukaryotic cells emerge from prokaryotic cells.
Explanation:
Biologist Lynn Margulis was the first person who studied the endosymbiosis in 1960. According to him the chloroplasts and mitochondria have been originated from ancient bacteria which was free living. These organelles are found in eukaryotic cells. The chloroplasts are found in plant cells and they have a green pigment called as chlorophyll which helps in the process of photosynthesis by absorbing the sunlight energy. The mitochondria produce energy in the form of ATP by the biochemical oxidation of the food.
the distinct characteristics of different cell types in a multicellular organism result mainly from the differential regulation of the _________________.
Answers
In a multicellular organism, the many cell types of distinctive traits are mostly the consequence of the differential control of gene expression.
Thus, the genetic makeup of every cell in an organism is the same, but how those genes are expressed or silenced affects the identity and function of each cell. Cell differentiation is the process through which cells take on certain tasks and develop distinctive characteristics.
The control of gene expression, in which particular genes are switched on or off in particular cell types, is what drives this differentiation and results in the synthesis of unique proteins and cellular behaviors. Gene expression may be precisely regulated, enabling the growth of specialized tissues and organs.
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skeletal muscle groups that work together to create the same movement are referred to as________
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Skeletal muscle groups that work together to create the same movement are referred to as synergists.
Synergists are skeletal muscle groups that work together to produce the same movement. These muscle groups cooperate to generate force and coordinate their contractions to achieve a specific action. Synergistic muscles often have similar or complementary functions and are involved in the same movement or action.
In a coordinated movement, there is usually a primary muscle, known as the agonist or prime mover, that is primarily responsible for initiating and controlling the movement. Synergistic muscles, also known as secondary or assisting muscles, work in conjunction with the agonist to enhance and support its action. They provide additional force, stability, or control to the movement, allowing for more efficient and coordinated motion.
The concept of muscle synergists is important in understanding human movement and the organization of muscle groups. By working together, synergistic muscle groups ensure smooth and coordinated movements while preventing excessive strain on individual muscles. This cooperative effort allows for precise control and efficient execution of various movements, such as walking, running, lifting, or throwing.
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True or False: Genetics is the study of DNA and Chromosomes
Answers
Answer:
TRUE
Explanation:
set the vertical velocity component equal to zero (vo sin α-gt 0) and solve for t. Choose the correct expression for t. v cos α cos α ○ B. sin α Vo sin α O C. D.
Answers
The given expression is vo sin α - gt 0. To solve for t, set the vertical velocity component to zero. The correct expression for t is `vo sin α/g`.So, the correct option is D.
We know that the velocity of an object can be defined as a vector quantity which means it has both magnitude and direction. Hence it can be represented as v = xvi + vyjHere, xi represents the horizontal component of velocity and vyj represents the vertical component of velocity. Therefore, the vertical component of the initial velocity can be written as vo sin α. The acceleration due to gravity is denoted by g. Hence, the vertical component of the velocity at time t can be expressed as:v = vo sin α - gtBy setting the above equation to zero, we can determine the time at which the object reaches its maximum height. Hence we get,0 = vo sin α - gtSolving the above equation for time t, we gett = vo sin α / gTherefore, the correct expression for t is vo sin α/g.
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Many industrial companies and car manufacturers design solutions to reduce pollution.even so, chemicals still enter the atmosphere some of these pollutants combined with water in the air to form acid rain which property of acid would cause acid rain damage buildings over time?
Answers
Corrosive property of acid would cause acid rain damage buildings over time.
Many industrial companies and car manufacturers design solutions to reduce pollution. Even so, chemicals still enter the atmosphere some of these pollutants combined with water in the air to form acid rain Corrosive property of property of acid would cause acid rain damage buildings over time.
Acid rain describes any form of precipitation that contains high levels of nitric and sulfuric acids. It can also occur in the form of snow, fog, and tiny bits of dry material that settle to Earth. Normal rain is slightly acidic.
Acidic corrosion is a gradual destruction and wearing away of a material due to acidic compounds present in the environment. The acids may be those coming from soil, industrial air, water or toxic chemicals that react with the material they contact.
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Particles that become planets
Answers
Explanation:
The planets in our Solar System are believed to have formed from the same spinning disc of dust that formed the Sun. This disc, called the solar nebula, was composed mainly of hydrogen and helium, but also had other elements in smaller proportions.
please help me fill in the model i need it now thank you
Answers
The flight or fight response helps the body to maintain the homeostatic condition of energy demand by providing the necessary energy to respond to a perceived threat triggered by the activation of the sympathetic nervous system, which causes an increase in heart rate, blood pressure, glucose release, and activation of lipolysis.
What is the role of the flight or fight response in homeostasis?The flight or fight response is a physiological response that occurs in response to a perceived harmful event, attack, or threat to survival. The response is aimed at preparing the body to either fight or flee from the perceived threat. The response is triggered by the activation of the sympathetic nervous system.
Here is a model that shows how the flight or fight response helps to maintain the homeostatic condition of the energy demand of the body when the stimulus was activated:
Perception of the threat/stimulus: The body perceives a stimulus, such as an attack or a threat, which activates the hypothalamus in the brain.Activation of the sympathetic nervous system: The hypothalamus activates the sympathetic nervous system, which triggers the release of adrenaline and noradrenaline from the adrenal glands.Increase in heart rate and blood pressure: Adrenaline and noradrenaline cause the heart rate and blood pressure to increase. This helps to transport oxygen and nutrients to the muscles to prepare them for physical activity.Release of glucose: Adrenaline and noradrenaline also stimulate the liver to release glucose into the bloodstream, which provides energy for the muscles to use during physical activity.Decrease in insulin: Adrenaline and noradrenaline inhibit the release of insulin from the pancreas, which helps to increase blood glucose levels.Activation of lipolysis: Adrenaline and noradrenaline also activate lipolysis, which is the breakdown of stored fat into fatty acids. Fatty acids can be used as a source of energy for the muscles.Maintenance of energy demand: The flight or fight response helps to maintain the homeostatic condition of energy demand by providing the body with the necessary energy to respond to the perceived threat. Once the threat has passed, the parasympathetic nervous system is activated, which helps to bring the body back to its normal state.Learn more about flight/fight response and homeostasis at: https://brainly.com/question/9295889
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27 POINTS!!!!!!!!!!!!!
Which of the following best explains the connection between increased competition and the evolution of a species by natural selection?
A. Individuals that have traits that allow them to out compete others survive better and produce more offspring.
B. Individuals must become stronger to compete for resources, and this increased strength is passed on to the next generation.
C. Individuals that must compete for limited resources are more likely to have diseases that cause mutations.
D. Individuals migrate to another area in order to avoid competition for limited resources in the current ecosystem.
Answers
Answer:
A-
Natural selection is an important mechanism of evolution proposed by Darwin. It ensures that the organisms most apt to live in a given environment are selected. Natural selection is one of the main mechanisms of evolution.
Explanation:
The statement 'individuals that have traits that allow them to out-compete others survive better and produce more offspring' best explains the connection between competition and evolution (Option A).
What is evolution?Evolution refers to descendence with modification, which generally occurs by natural selection.
Natural selection refers to the differential survival and reproduction of the fittest organisms in a given environment.These organisms have more chances of passing their genes to the next generation.In conclusion, the statement 'individuals that have traits that allow them to out-compete others survive better and produce more offspring' best explains the connection between competition and evolution (Option A).
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word equation for photosynthess
Answers
Answer:
6CO2 + 6H2O → C6H12O6 + 6O2.
Explanation:
The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.
The frequency of two alleles in a gene pool is 0.17 (A) and 0.3 (a.) assume that the population is in Hardy-Weinberg equilibrium calculate the percentage of heterozygous individuals in the population.
28% 1% 31% or 46%
Answers
The correct answer based on the calculation would be approximately 10.2% heterozygous individuals in the population. The correct answer is 10%.
To calculate the percentage of heterozygous individuals in a population in Hardy-Weinberg equilibrium, we can use the formula 2pq, where p represents the frequency of one allele (A) and q represents the frequency of the other allele (a).
Given that the frequency of allele A is 0.17 and the frequency of allele A is 0.3, we can calculate:
p = 0.17
q = 0.3
Now, we can substitute these values into the formula:
2pq = 2 \(\times\) 0.17 \(\times\) 0.3 = 0.102
Therefore, the percentage of heterozygous individuals in the population is 0.102 \(\times\) 100 = 10.2%.
Based on the given answer choices, none of them exactly match the calculated value.
The closest option is 1%, but it does not match the calculated percentage accurately. It's possible that there may be a typographical error or slight deviation in the provided answer choices.
The correct answer based on the calculation would be approximately 10.2% heterozygous individuals in the population.
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Question
The frequency of two alleles in a gene pool is 0.17 (A) and 0.3 (a.) assume that the population is in Hardy-Weinberg equilibrium calculate the percentage of heterozygous individuals in the population.
28% 10% 31% or 46%
Why are certain traits adaptations in one environment, but not in another?
O A. Some environments cause more mutations than others.
O B. Different environments have different abiotic conditions.
O C. Organisms can learn new adaptations.
O D. All environments have the same amount of competition.
Answers
Answer:
Different environments have different abiotic conditions.
Explanation:
as in most areas of biology, the study of mitosis and the cell cycle involves a lot of new terminology. knowing what the different terms mean is essential to understanding and describing the processes occurring in the cell. drag the terms on the left to correctly complete these sentences. not all the terms will be used. view available hint(s)for part a resethelp 1. dna replication produces two identical dna molecules, called blank, which separate during mitosis.target 1 of 8 2. after chromosomes condense, the blank is the region where the identical dna molecules are most tightly attached to each other.target 2 of 8 3. during mitosis, microtubules attach to chromosomes at the .target 3 of 8 4. in dividing cells, most of the cell's growth occurs during .target 4 of 8 5. the blank is a cell structure consisting of microtubules, which forms during early mitosis and plays a role in cell division.target 5 of 8 6. during interphase, most of the nucleus is filled with a complex of dna and protein in a dispersed form called blank.target 6 of 8 7. in most eukaryotes, division of the nucleus is followed by blank, when the rest of the cell divides.target 7 of 8 8. the blank are the organizing centers for microtubules involved in separating chromosomes during mitosis.
Answers
1. DNA replication produces two identical DNA molecules, called SISTER CHROMATID(S), which separate during mitosis.
2. After chromosomes condense, the CENTROMERE(S) is the region where the identical DNA molecules are most tightly attached to each other.
3. During mitosis, microtubules attach to chromosomes at the KINETOCHORE(S)
4. In dividing cells, most of the cell's growth occurs during INTERPHASE
5. The MITOTIC SPINDLE(S) is a cell structure consisting of microtubules, which forms during early mitosis and plays a role in cell division.
6. During interphase, most of the nucleus is filled with a complex of DNA and protein in a dispersed form called CHROMATIN
7. In most eukaryotes, division of the nucleus is followed by CYTOKINESIS, when the rest of the cell divides.
8. The CENTROSOME(S) are the organizing centers for microtubules involved in separating chromosomes during mitosis.
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Full Question:As in most areas of biology, the study of mitosis and the cell cycle involves a lot of new terminology. Knowing what the different terms mean is essential to understanding and describing the processes occurring in the cell.
Which type of lipoprotein takes cholesterol from cells or atherosclerotic deposits back to the liver?.
Answers
The type of lipoprotein takes cholesterol from cells or atherosclerotic deposits back to the liver is High density lipoproteins (HDL).
What is High density lipoprotein?High density lipoprotein can transport back cholesterol and sometimes called "good cholesterol". Patient with too low high-density lipoprotein will be considered having dyslipidemia(disturbance in cholesterol concentration) when other cholesterol considered as dyslipidemia if its too high.
Patient with too low high-density lipoprotein will be considered having dyslipidemia(disturbance in cholesterol concentration) and high density lipoprotein can transport back cholesterol and sometimes called "good cholesterol".
Therefore, The type of lipoprotein takes cholesterol from cells or atherosclerotic deposits back to the liver is High density lipoproteins (HDL).
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some actin-binding accessory proteins significantly increase the rate at which the formation of actin filaments is initiated in the cytosol. how might such proteins do this? what must they not do when binding the actin monomers?
Answers
The beginning of a new filament will be aided by any actin-binding protein that stabilises complexes of two or more actin monomers. The actin-binding proteins must not obstruct the filament growth-required ends.
Any protein that serves as a connector between two or more molecules is referred to as a binding protein. DNA-binding protein is one illustration. binding protein for single strands. Binding protein for telomeres. DRBPs, which make up a sizeable portion of cellular proteins and play crucial roles in cells, bind to DNA and RNA. They regulate DNA repair, splicing, apoptosis, transcription, and translation in addition to modulating stress responses.
A monomer is a molecule from any of a class of chemicals, generally organic, that can combine with other molecules to generate much larger molecules, or polymers. The ability to create chemical bonds with at least two other monomer molecules is a monomer's primary property known as polyfunctionality.
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During ___________, the cell grows, makes a DNA copy, and prepares to split into two cells
Answers
Answer:
Interphase
Explanation:
Hey can you please help me with this
please and thank you
Answers
Which statements best explain how students would know if a chemical reaction occurred during the steel wool demonstration? Select TWO correct answers from the choices below.
Answers
Answer:
When the heat energy releases and formation of iron oxide.
Explanation:
When the heat energy releases and formation of iron oxide are the indications that chemical reaction takes place. during the steel wool demonstration. During the steel wool demonstration, heat energy released when the iron combine with oxygen forming solid iron oxide. So we can conclude that release of heat energy and formation of iron oxide tells us that the chemical reaction takes place.