The endocrine system is the organ system which is responsible for coordinating the activity of the other organ systems.
The endocrine system is an organ system which consists of a group of organs or the glands which are known as the endocrine glands that perform the function of releasing hormones directly into the circulatory system of the body.
These hormones which are secreted by the glands travel through the circulatory system to target organs which are located distantly to show their action and dictate their functioning . Some of the glands of the endocrine system include hypothalamus, thyroid gland, adrenal gland etc.
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mineral matter soakks into all the cavity and pore of specimen, replacing living material; hard parts are not replaced is called
Mineral matter soakks into all the cavity and pore of specimen, replacing living material; hard parts are not replaced is called petrification.
Petrification is the process in which minerals replace organic material in a specimen, filling in its cavities and pores.
This results in the hardening and preservation of the specimen over time, while maintaining its original shape and structure.
This process typically occurs in sedimentary environments where the specimen is covered by mineral-rich sediment and groundwater.
Over time, the minerals in the sediment and water penetrate and replace the organic material, solidifying it into a rock-like substance.
Not all parts of the specimen are replaced, as only the porous and cavity-filled areas are susceptible to mineral infiltration.
Petrification provides valuable information about ancient life forms and environments.
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often in preliminary experimentation, each factor is restricted to two levels. with the three factors noted, how many experiments would need to be run to cover all possible combinations with each of the three factors at two levels? (note: this is often called a
About 40 experiments should be conducted. To test every combination with each of the three parameters at two levels, around 8 experiments are required.
According to the multiplication principle, there are n×m possibilities for two events to occur concurrently if one can happen in n different ways and the other can happen in m different ways.
a) Given that the researcher can select between two different catalysts, four different temperature ranges, and five different pressure levels.
Using the multiplication rule, we can find the combinations of these as 2×4×5 = 40.
b) Given that each of the three factors is at two levels. This means that the researcher can select 2 different catalysts, two different temperature ranges, and two different pressure levels.
Using the multiplication rule, we can find the combinations of these as 2×2×2=8.
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The complete question is -
In designing an experiment, the researcher can often choose many different levels of the various factors to try to find the best combination at which to operate. As an illustration, suppose the researcher is studying a certain chemical reaction and can choose four levels of temperature, five different pressures, and two different catalysts
a- To consider all possible combinations. How many experiments would need to be conducted?
b- Often in preliminary experimentation each factor is restricted to two levels. With the three factors noted. How many experiments would need to be run to cover all possible combinations with each of the three factors at two levels? (Note: this is often called a 2³ design).
The field of biological research in which biologists are attempting to create a living cell in the laboratory, essentially from scratch is known as __________. More modestly, this branch of biology also has a goal of developing novel life forms, beginning with existing organisms, that have a unique value in medicine, industry or in cleaning up the environment.
a) megalomaniacal biology
b) synthetic biology c) production-grade biology
d) industrial biology
e) pharmaceutical biology
The field of biological research in which biologists are attempting to create a living cell in the laboratory, essentially from scratch is known as (b) synthetic biology.
Cell is the most basic building block of all the organisms. Two types of cells exist in the environment: prokaryotic and eukaryotic. The eukaryotic cells are further divided into two types: plant cells and animal cells. The cells have all the essential components required for their survival.
Synthetic biology is simply the redesigning of organisms in order to make them more useful for the human use. It is a multi-disciplinary filed involving the use of technology in biological science.
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Answer:
(b) synthetic biology.
Explanation:
what is unique about the glands of the endocrine system
The uniqueness of the endocrine glands is that they are ductless glands and release their secretions called hormones direct into the blood stream.
Endocrine glands are the part of the endocrine system that release several hormones for the regulation of several body functions. The various endocrine glands are: hypothalamus, pituitary, thyroid, parathyroid, adrenal, pineal body, the ovaries, and the testes.
Hormones are the chemical messengers of the body that are present in the blood stream and act at their target site to accomplish a certain body function. The examples of hormones are: growth hormone, oxytocin, vasopressin, testosterone, progesterone, LH, FSH, etc.
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two pea plants of rr yy are crossed. what are the phenotypic and the genotypic ratios in the offspring of this cross?
The offspring of the cross between two pea plants of RR YY will have a phenotypic ratio of 100% round yellow seeds and a genotypic ratio of 100% Rr Yy.
The phenotypic and genotypic ratios in offspring of a cross between two pea plants of RRYY genotype can be determined by considering the inheritance of traits controlled by the alleles present in the parent plants. In pea plants, the dominant R allele codes for round seeds and the recessive r allele codes for wrinkled seeds, while the dominant Y allele codes for yellow seeds and the recessive y allele codes for green seeds.
In a cross between two RRYY pea plants, the offspring will all be heterozygous for both traits (RrYy). The phenotypic ratio of the offspring can be calculated as the proportion of plants expressing each phenotype. In this case, all the offspring will have round and yellow seeds (the dominant traits), so the phenotypic ratio will be 100% round yellow (RrYy).
The genotypic ratio, on the other hand, represents the proportion of plants with each combination of alleles. In this case, the genotypic ratio of the offspring will be 1:1 for RrYy and rryy (50% each).
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a person's genotype determines how the person will turn out (e.g., how tall they will become, whether they will develop certain illnesses, etc.). (T/F)
It is true that a person's genotype determines how the person will turn out (e.g., how tall they will become, whether they will develop certain illnesses, etc.).
The term "genotype" basically refers to the genetic makeup of a particular organism, that is, it describes an organism's complete set of genes. It can be used to refer to the alleles, which are the variants of a gene that are carried by an organism.
The genotype or the genetic makeup of a particular organism determines how they will turn out. That is, the genes determine the protein products that are formed which eventually decide a lot of traits like height, eye color and even the illnesses which an organism might develop.
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3. define the term plasmid and describe where these molecules occur in nature. what is the role of plasmids in spreading prokaryotic resistance to antibiotics
A plasmid is a tiny, circular, double-stranded DNA molecule that differs from chromosomal DNA in a cell. Plasmids are naturally found in bacterial cells and in certain eukaryotes.
Plasmids can be transferred between bacteria. This indicates that a bacteria can develop resistance to many antibiotics at the same time by acquiring a single plasmid. They then develop multidrug resistance. Furthermore, plasmids usually include genes that regulate bacterial pathogenicity. They can be transmitted to other prokaryotes in a colony, occasionally transmitting survival genes.
A plasmid is a tiny extrachromosomal DNA molecule that exists within a cell and may multiply independently of chromosomal DNA. Plasmids are small circular, double-stranded DNA molecules that are most commonly found in bacteria; however, plasmids may also be found in archaea and eukaryotic cells.
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what is a halotolerant microbe? how do halotolerant microbes differ from halophiles?
A halotolerant microbe is kind of organism which can be repel very high and. Halotolerant microbes different from the halophiles in that halophiles actually bear a swab to survive and thrive.
while halotolerant microbes can tolerate high situations don't bear it. These acclimations include the product of compatible solutes that allow the microbes to maintain their bibulous balance, indeed in the presence of high swab attention. Halotolerant microbes play an important part in the global carbon cycle, as they're suitable to break down organic matter in extreme surroundings. also, they can be used as a source of swab- resistant enzymes for artificial purposes. Overall, understanding halotolerant microbes can help us more understand the global cycles of carbon, nitrogen and other rudiments.
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describe atp hydrolysis and explain why atp hydrolysis is needed
In living things, energy is kept in the form of ATP. Respiration produces the majority of ATP. The energy generated during the hydrolysis of ATP is used to fuel cellular functions.
ATP hydrolysis is related to a wide variety of processes. These processes are endergonic, meaning that energy is needed. When the enzyme hexokinase catalyses the conversion of glucose to glucose 6 phosphate during the glycolysis process, this is an example of a reaction coupling. Glucose is phosphorylated using the phosphate group liberated during ATP hydrolysis. Another instance of how ATP hydrolysis is linked to the alteration of the shape of transport proteins and the transportation of ions across the membrane is the sodium-potassium pump.
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5. using your data, which food had the most amount of kilocalories per gram? based on what you learned about the structure of each macromolecule, why is this true?
Answer:
Fat
Explanation:
Fat provides the most energy of all the macronutrients, at a whopping 9 calories per gram.
Why are red giants bright if they are so much cooler?
Answer: The star expands to many times its original radius. It is actually fusing Hydrogen in a shell around the core. Red giant stars have a cooler surface temperature which makes them redder in colour. Although cooler, the large size of a red giant makes it brighter overall.
||DONT USE EXACT WORDS...PLAGARISM, YOU MAY GET POINTS DEDUCTED OFF YOUR ANSWER. ||
Answer:
its so hot that its cold...................
Is it true that humans share 60% of their DNA with a banana?
Alright, no. In actuality, plants, including bananas, share around 50% of our DNA with humans. Exactly 44.1% of the genetic material in humans and bananas is shared.
What is DNA exactly?Deoxyribonucleic acid, also known as DNA, is indeed the molecule that contains the genetic material necessary for an organism's growth and operation. DNA is composed of two linked strands which loop among themselves to make a twisted ladder, forming a double helix.
What does DNA actually accomplish?DNA is the molecule of information. Each of your cells contains 46 long structures 23 genes that serve as a distribution point for these instructions. These chromosomes are made up of several smaller segments of DNA, called genes.
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Evaluate
what is the impact on living organisms if the Sun began to produce less energy and then finally burned out.
Answer:
With less sunlight on earth, the number of plants will decrease. It will lead to a decrease in the food web. If the sun eventually burns out, all life on earth will die.
Explanation:
The sun makes life possible on earth by giving us sunlight, heat, and solar energy.
a student breaks the lip of a glass test tube containing bacteria in broth. where should she/he dispose of it?
A broken glass test tube containing bacteria broth is a biohazard, so should be place in a biohazard bag, then autoclaved in 30-40 minutes at 121 °C 20 pounds of pressure. After that, disposed properly such as placed in the designated glass disposal container.
All bacteria and chemicals in the laboratory are to be considered dangerous. Never discard contaminated cultures, petri dishes, glassware, pipettes, tubes, or slides in the trash can. These must be autoclaved first to make sure bacteria are death, then dispose properly in a designed disposal container.
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what is the large centrally-located organelle visible with a light microscope called? multiple choice question.
The large centrally-located organelle visible with a light microscope is called the nucleus.
The nucleus is responsible for storing and organizing the genetic material in the form of DNA, as well as controlling the activities of the cell. The other organelles that are visible with a light microscope are the mitochondria, nucleolus, centriole, and Golgi complex.
A light microscope is an optical instrument used to magnify small objects for viewing using visible light. It consists of an objective lens that magnifies the image and an eyepiece lens that further magnifies the image. The light microscope uses visible light to illuminate the specimen and can magnify objects up to 1000x their original size.
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What is the large centrally-located organelle visible with a light microscope called?
a.) Mitochondria
b.) Nucleolus
c.) Centriole
d.) Nucleus
e.) Golgi complex
which is an accurate description of resting potential?
The resting potential is the electrical charge that is maintained by a neuron when it is not transmitting an action potential.
A neuron is a specialized cell that is responsible for transmitting electrical signals, or nerve impulses, throughout the body. The resting potential of a neuron is established by the balance of ions (positively charged atoms) on either side of the cell membrane.
The inside of the neuron is negatively charged compared to the outside, and this difference in charge creates an electrical potential, called the resting potential. The resting potential is maintained by the selective permeability of the cell membrane, which allows only certain ions to move in and out of the cell.
When a nerve impulse is transmitted, the resting potential changes and an action potential is generated. An action potential is a rapid change in the voltage across the cell membrane that is responsible for transmitting the nerve impulse along the neuron.
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identify whether the types of selection will increase, decrease, or maintain variation in a population?
Stabilizing selection decrease variation in the population by reducing the frequency of the extreme forms.
Types of selection and thier inflence on variation in a population
Selection is a process in biology where certain traits are passed on to the next generation more frequently than others due to differences in survival and reproduction.
It is one of the mechanisms that drive evolution, allowing populations to adapt to changing environments over time.
There are several types of selection,
Stabilizing selection: This type of selection occurs when intermediate forms are favored over extreme forms. It tends to decrease variation in the population by reducing the frequency of the extreme forms.
Directional selection: This type of selection occurs when one extreme form is favored over all others. It tends to increase variation in the population by shifting the distribution of traits towards the favored extreme.
Disruptive selection: This type of selection occurs when both extreme forms are favored over the intermediate forms. It tends to increase variation in the population by maintaining the frequency of both extreme forms and reducing the frequency of the intermediate forms.
Sexual selection: This type of selection occurs when individuals are chosen based on their secondary sexual traits, such as their physical appearance, coloration, or courtship displays. It can increase or decrease variation in the population depending on the specific traits that are favored.
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An animal pollinator may be rewarded by______ when it visits a flower of a coevolved plant (choose all that apply). a. pollen c. hormones b. nectar d. fruit
An animal pollinator may be rewarded by nectar and fruit when it visits a flower of a coevolved plant.
Pollination is the movement of pollen from a plant's anther to its stigma, allowing fertilization and seed formation, most commonly by an animal or by wind. Animals such as insects, birds, and bats, as well as water, wind, and even plants themselves, can act as pollinators when self-pollination happens within a closed flower. Within a species, pollination is common. In nature and in plant breeding, pollination between species can result in hybrid progeny.
Christian Konrad Sprengel was the first to study pollination as an interaction between flower and pollen carrier in the 18th century. It is critical in horticulture and agriculture since fruiting is dependent on fertilization, which is the outcome of pollination.
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Which sentence most accurately describes how neurons communicate? Select one: O a. Neurons communicate through physical contact between dendrites of one cell and the next cell. O b. Axons of neurons wrap around each other and communicate messages through hormones. O c Electricity passes between neurons, which carries messages between one neuron and another. O d. Neurons send messages up the spinal cord to the cerebral cortex through neural reflexes O e. Chemicals travel from one neuron to another, influencing whether a neuron will fire or not.
The most accurate about neurons that Chemicals travel from one neuron to another, influencing whether a neuron will fire or not so, option E is correct.
Neurons are the specialized cells set up in the nervous system that are responsible for transmitting information throughout the body. They admit, process and transmit information in the form of electrical signals. Neurons are the introductory unit of the nervous system and also are the structure blocks of the neural networks,
which are networks of connected neurons. They play an important part in forming recollections, literacy, controlling movements, and other cognitive functions.
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For a protein with N=10, at T=310K s=3.50. The melting temperature is T=340K.
Part A Calculate the partition funtion for the protein at T=310K. Assume q0=1
Part B Calculate the fraction of proteins that are entirely helical at T=310K
Part C Calculate the change in helical fraction ΔfH when the temperature is changed from T=310K to T=340K.
Part D Calculate the change in the standard molar enthalpy change ΔH∘ when the temperature increases from T=310K to T=340K.
A molecular dynamics simulation and energy minimization engine is called GROMACS.
These two methods are just a couple of the many that fall under the category of computational chemistry and molecular modeling. The term "computational chemistry" simply denotes the application of methods in chemistry, including dynamics of enormously complex molecular aggregates and quantum mechanics of molecules. With the aim of comprehending and forecasting macroscopic qualities based on in-depth knowledge on an atomic scale, molecular modeling refers to the broad technique of describing complicated chemical systems in terms of a realistic atomic model. When it comes to creating novel materials, molecular modeling is frequently used. This is because reliable physical property predictions of realistic systems are necessary.
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is dali a structure-based or a sequence-based protein alignment technique? does it offer a local or global alignment? what advantages does this offer? what disadvantages does this introduce?
DALI is a method for global alignment that is based on structures.
Advantages: It short cuts the process of removing different structures from comparison. With efficient performance, it speeds up the search.
Proteins that are less than 30 AA in length are not accepted. Proteins with little secondary structure, such as chlorophyll, are skipped.
A zero result indicates different folds.
Prior to calculating the Z scores using the formula n/10-4, where n is the number of residues in the structure, they must be structurally aligned; a high Z score does not necessarily imply that they are structurally related.
DALI is short Distance Alignment Matrix Method. It is a commomly used method that breaks protein that is being inputted in the system into hexapeptide fragment form and then it calculates the distance matrix by by styuying the contact pattern between successive fragments.
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What is the maximum volume of blood that can be collected form a 110-lb donor, including samples for processing? A 450mL. B 500mL. C 525mL. D 550mL
The maximum volume of blood that can be collected from a 110-lb donor, including samples for processing, is typically limited to around
c. 525mL, or slightly less than 2 pints called maximum blood volume
This is known as the "maximum blood volume" or "maximum blood draw" limit, and it is established to minimize the risk of adverse effects, such as lightheadedness, fainting, or low blood pressure. The maximum blood volume is calculated based on various factors, including the donor's weight, height, and overall health. The amount of blood that can be collected also depends on the specific procedures being performed, as well as the presence of any underlying medical conditions that may affect the donor's ability to tolerate the blood draw. Overall, it is important to follow established guidelines and protocols when collecting blood from donors to ensure the safety and well-being of the donor.
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When tectonic plates collide, pockets of hot magma may come into contact with cooler, solid rock. Using what you know about plate tectonics and the ways in which minerals form, describe why California has more iron-ore deposits than Nebraska does.
Answer:
California and Nebraska are located on different tectonic plates and have different geologic histories, which can explain the difference in iron-ore deposits between the two states.
California is located on the Pacific plate, which is colliding with the North American plate along the San Andreas Fault. This collision has resulted in the formation of the Sierra Nevada mountain range, which is composed of granitic rocks. The heat and pressure from this collision can cause the formation of iron-ore deposits, as the hot magma coming into contact with the cooler, solid rock can cause the iron to be concentrated and form ore deposits.
On the other hand, Nebraska is located on the North American plate and does not have any major plate collision boundaries nearby. This means that the geologic processes that form iron-ore deposits, such as heat and pressure from plate collisions, are not as prevalent in Nebraska as they are in California. Additionally, the geologic formations in Nebraska are mostly sedimentary rock, which typically do not contain iron-ore deposits.
Therefore, California has more iron-ore deposits than Nebraska because of the collision of tectonic plates that formed the Sierra Nevada mountain range and the geologic processes that occurred as a result.
can you describe what cause the discrepancy betweent the theorhetical tensile strength and the actual strength
Defects cause the discrepancy between the theoretical tensile strength and the actual strength.
Due to the fabricated structure's numerous flaws, including faults and surface roughness, the actual tensile strength is substantially lower than the theoretical strength and varies greatly. The strength of SCS was reported to be between 0.5 and 10 GPa, indicating the presence of fracture-initiating defects with a length greater than 0.5 m. (Tsuchiya et al. 2005). The surface geometry is regarded as the key determinant of fracture strength in silicon microstructures. For instance, the roughness of the etched surfaces dominated the strength of the micromachined structure made from SOI wafer utilising DRIE methods (Izumi et al. 2005).
Because nothing in reality is flawless, the theoretical strength is computed for perfect materials (without any flaws or blemishes). For all materials, this is true. Hence results in discrepancy .
Only a small number of faults are required for brittle materials to break since they have little elongation range and do so promptly when they approach the breaking point.
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sediment may form when dissolved material is extracted from water in which of the following ways? multiple select question. precipitated by chemical reactions melting of the rock material under high temperatures and pressures dissolution of the material through chemical weathering precipitated through biologic activity of aquatic life (e.g., corals)
1. Precipitated by chemical reactions, 2. Melting of the rock material under high temperatures and pressures, 3. Dissolution of the material through chemical weathering , 4. Precipitated through biologic activity of aquatic life (e.g., corals)
Which of the ways sediment extract from water?1. Precipitated by chemical reactions: When two or more chemicals react with each other, some of the chemicals form a solid that can settle out of the water, leaving behind sediment.
2. Melting of the rock material under high temperatures and pressures: High temperatures and pressures can cause rock to melt and the dissolved material can settle out of the water, forming sediment.
3. Dissolution of the material through chemical weathering: Chemical weathering is a process that occurs when chemicals in the environment break down rock and other substances into smaller pieces. These pieces can then dissolve into the water and form sediment.
4. Precipitated through biologic activity of aquatic life (e.g., corals): Aquatic life, such as corals, can produce a variety of chemicals that can settle out of the water and form sediment.
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energy since 1750.
Incoming solar energy (watts per m²)
Sun's Energy (Tocal Solar Irradiance)
1,365
1,364
1,363
1,361
1,360
1,369
1,368
1,367
1750 1800 1850 1900 1950 2000 2050
Years
This is a graph of the amount of incoming solar energy (measured in watts per m²) over the past 270 years (from 1750 to 2050).
What is the total solar irradiance (TSI)?The total solar irradiance (TSI) has been fairly steady in that time period, ranging from 1,360 to 1,369 watts per m².
This data shows that the Sun’s energy output has remained relatively constant since 1750.
This is important to understand, as any changes in the Sun’s energy output could have a significant impact on the Earth’s climate.
Additionally, this data could provide insight into how much solar energy is available for use in various solar energy applications.
This is a table showing the amount of incoming solar energy (measured in watts per m²) over the past 250 years, from 1750 to 2050.
The incoming solar energy is also known as the Total Solar Irradiance (TSI).
The TSI has remained fairly constant over the past 250 years, with only small fluctuations of a few watts per m². It generally remains around 1,365 watts per m².
This table can be used to demonstrate the stability of the Sun's energy output and its potential for renewable energy over the past 250 years.
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The complete question is: Measure the incoming solar energy (watts per m²) and Sun's Energy (Total Solar Irradiance) in the following years: 1365, 1364, 1363, 1361, 1360, 1369, 1368, 1367, 1750, 1800, 1850, 1900, 1950, 2000, and 2050 Years.
recent research indicates that main way in which glucose represses the lac operon is by inhibiting the transport of lactose into e. coli cells, a phenomenon called
The E. lac operon Lactose metabolism is regulated by genes in E. coli. It only expresses itself when lactose and glucose are both absent.
The E. lac operon Lactose metabolism-related genes can be found in E. coli. It doesn't show symptoms until lactose and glucose levels are low. Lac repressor and catabolite activator protein are two regulators that regulate the operon's "on" and "off" states in response to lactose and glucose concentrations (CAP).
Glucose is typically the best carbon source for E since it encourages faster development than other sugars and is the first sugar to be consumed in sugar combinations. coli. Through the synthesis of a little molecule called cyclic AMP, E. coli controls the transcription of the lac operon (cAMP). Both the availability of lactose and glucose influence the lac operon. E. coli controls the lac Operon's transcription by producing the tiny molecule cyclic AMP (cAMP).
Since glucose is required for the transcription process and is generated by E.
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the mlh1 gene is located on chromosome 3 in humans and four different alleles have been identified. the maximum number of alleles a single normal individual can have is:
Option B is Correct. In humans, the MLH1 gene is found on chromosome 3, and four distinct alleles have been discovered. A single normal person can have a maximum of two alleles.
Mismatch repair protein for DNA The MLH1 gene, which is found on chromosome 3, encodes the protein known as Mlh1 or MutL protein homolog 1. This gene has a reputation for being linked to hereditary nonpolyposis colorectal cancer.
A protein that is crucial for mending DNA is made using instructions from the MLH1 gene. When DNA is replicated (DNA copying) in order to prepare for cell division, this protein aids in the correction of mistakes that are created.
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Correct Question:
he MLH1 gene is located on chromosome 3 in humans and four different alleles have been identified. The maximum number of alleles a single normal individual can have is:
A. 1
B. 2
C. 3
D. 4
9. in some experimental systems, a newly synthesized rna primer is transferred from primase to the clamp or clamp loader rather than directly to dna polymerase. explain why this would maximize the efficiency of dna replication.
A new strand of DNA is produced by DNA polymerase by lengthening the primer. Primase creates complementary RNA primers for the DNA strand.
To create the majority of the new DNA, DNA polymerase III extends the primers by adding to the 3' end. DNA polymerase I replaces RNA primers with DNA instead. DNA ligase fills the spaces between DNA segments. During DNA replication, the ssDNA-dependent RNA polymerase primase creates RNA primers. A DNA ligase enzyme fills the spaces between the DNA pieces as synthesis progresses by removing the RNA primer and replacing it with DNA nucleotides. RNA primers are created by the enzyme primase.
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what would be complementary DNA bases for this strand A T T G A C
Answer:
T A A C T G
Explanation:
In DNA, A's bind to T's and C's bind to G's.
