which item is responsible for joining nucleotides to build a new stand of DNA
The process of joining nucleotides to build a new strand of DNA is carried out by an enzyme called DNA polymerase. DNA polymerase plays a central role in DNA replication, repair, and synthesis during processes like DNA transcription and DNA repair.
During DNA replication, DNA polymerase catalyzes the formation of phosphodiester bonds between adjacent nucleotides, thereby linking them together to form a new DNA strand complementary to the template strand. This process occurs in the 5' to 3' direction, meaning that nucleotides are added to the growing DNA strand at the 3' end.
DNA polymerase requires several components and cofactors for its activity. These include a template DNA strand, a primer (a short strand of RNA or DNA complementary to the template DNA), deoxyribonucleotide triphosphates (dNTPs) as substrates, magnesium ions (Mg2+) as cofactors, and other accessory proteins that assist in the replication process.
The mechanism of DNA synthesis by DNA polymerase involves several steps:
1. Initiation: DNA polymerase binds to the primer-template junction, forming a complex known as the DNA polymerase-DNA complex.
2. Elongation: DNA polymerase adds nucleotides to the 3' end of the primer strand in a stepwise fashion, using the template DNA strand as a guide. Each incoming nucleotide forms base pairs with the complementary nucleotide on the template strand, and DNA polymerase catalyzes the formation of a phosphodiester bond between the 3' hydroxyl group of the last nucleotide in the growing strand and the α-phosphate group of the incoming nucleotide.
3. Termination: DNA polymerase continues synthesizing the new DNA strand until it reaches the end of the template strand or encounters an obstacle. Once replication is complete, the newly synthesized DNA strand dissociates from the DNA polymerase-DNA complex.
DNA polymerases are highly accurate enzymes, with built-in proofreading mechanisms that help to maintain the fidelity of DNA replication by correcting errors in base pairing. However, errors can still occur, leading to mutations. In such cases, other DNA repair mechanisms come into play to correct the errors and maintain the integrity of the genetic material.
In summary, DNA polymerase is responsible for joining nucleotides to build a new strand of DNA during processes like DNA replication, repair, and synthesis. Its ability to catalyze the formation of phosphodiester bonds between nucleotides is essential for the accurate transmission of genetic information from one generation to the next.
The complete question is:
Which item is responsible for joining nucleotides to build a new stand of DNA?
why is the region with bark ringing smeared with Vaseline
A ________ is a model that imitates a real-world situation. What goes in the blank? Please help.
Which of these statements best describes the relationship between matter, pure substances, and mixtures?
A. Pure substances can be divided into two groups; matter and mixtures.
B. Matter can be divided into two groups; pure substances and mixtures.
C. Mixtures and matter are two of many different types of pure substances.
D. Pure substances and matter are two of many different types of mixtures.
Which of the following levels of classification is the least specific?
Domain
Kingdom
Class
Species
Answer:
The domain is the least specific level of classification.
Explanation:
The levels of classification for life, or taxonomic rank, ordered from least specific to most specific, are:
DomainKingdomPhylumClassOrderFamilyGenusSpeciesWe can remember the sequence of these terms using a mnemonic device (a memorable sentence, in which the first letter for each word corresponds with a level):
Did King Philip come over for gremlin soup?
DomainsThere three domains are:
BacteriaArcheaEukaryaBacteria and archea are both prokaryotes, meaning they do not have a membrane-bound nucleus.
Eurkarya, which includes the animal kingdom (and thus the human species), have a membrane-bound nucleus.
In biological taxonomy, the 'Domain' is the least specific level of classification. It covers a broad range of organisms, while 'Species' is the most specific level, referring to a certain kind of organism.
Explanation:The least specific level of classification in biological taxonomy is Domain. Here's an explanation to help you understand:
Biology classifies all living things using a hierarchical system starting with the broadest categories and ending with the most specific. The order from least specific (broadest) to most specific (narrowest) is: Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species. So, a Domain includes a large number of different organisms, while Species refers to a specific type of organism. For example, in the 'Domain' category, you might have 'Eukarya' which covers all organisms with eukaryotic cells, including plants, animals, fungi, and protists. But in the 'Species' level, you get to a specific type, like 'Homo sapiens' (human beings).
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Comparisons of cranial capacity between A. africanus and the later species H. erectus and A. boisei show that H. erectus had much larger brains, while A. boisei had only slightly larger brains, than A. africanus. There is evidence that A. africanus and H. erectus used tools, though the tools made by H. erectus required more skill and planning to craft. How do you think the toolmaking abilities of A. boisei would have compared?
(A)A. boisei would have had very little ability to make tools, unlike the other two hominids.
(B) A. boisei would have been able to make more advanced tools than the other two hominids.
(C)A. boisei would have been able to make tools that were less advanced than H. erectus.
(D)A. boisei would have made tools that were less advanced than those made by A. africanus.
Ans.
According to the study, H. erectus had a larger brain as compare to A. boisei and A. africanus, while A. boisei had a larger brain than A. africanus. It means the H. erectus had much advanced tool-making abilities as compared to A. boisei, so A. boisei would have been able to make less advanced tools than that of made by H. erectus.
Thus, the correct answer is option (C).
There are different kinds of studies. The toolmaking abilities of A. boisei would have compared to the A. boisei would have been able to make tools that were less advanced than H. erectus.
Based on the study carried out, H. erectus is known to have a larger brain when compare to A. boisei and A. africanus and also the A. boisei also has a bigger brain when compared to A. africanus.
This implies that the H. erectus has high abilities in terms of tool-making than A. boisei. Boisei is known to be a Latin word that implies 'strongly built' which connote a specie that has a robust skulls and jaws.
Therefore, the correct answer is option (C).
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Select 1 of the following sea animal pairs. Describe their symbiotic relationship, and make sure to identify it as one of the three types. NO PLAGIARISM!!!
Sea anemone and clownfish
Cleaner wrasse and any one of many large fish species
Coral and zooxanthellae
Remora and whale shark
Scale worm and seastar
Scallops and sponges
Damselfish and algae
Nematodes and many types of fish
Phenotype describes
the genetic makeup of an individual
the actual genes in an individual
the DNA in an individual
the appearance of an individual
The genetic makeup of an individual
Science Investigatory Project
Title: The Effectiveness of Citronella as An active ingredient in Mosquito Repellant Soap
give 1 page of introduction and background
give the statement of the problem,formulation of the hypothesis,significance of the study,Scope and delimination of the study, and definition of terms
what happens when electromagnetic waves strike a rough, dark material?
Answer:
A
Explanation:
_____ is a condition in which plants produce separate male and female gametophytes
How do you get from one unit in the metric system to the next bigger unit?
Why was Mendel's work not accepted at the time?
his results were surprising- apex
His results were surprising- apex. Gregor Mendel wasn't the first person to study plants or the only one to be interested in genetics.
What is Mendel's work?
The conventional wisdom holds that Mendel was a monk engaged in solitary scientific endeavor.
Because his work was not widely disseminated and he made no attempt to market himself, it was neglected. Mendel belonged to the scientific and social elite of the day.
He met numerous eminent scientists while he was a student at the University of Vienna. He had the chance to travel to scientific meetings and attend them.
Therefore, His results were surprising- apex. Gregor Mendel wasn't the first person to study plants or the only one to be interested in genetics.
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Which term describes a possible explanation of, or answer to, a scientific question that is based on prior knowledge or research and that is testable? conclusion experiment hypothesis prediction
The correct answer is hypothesis.
The hypothesis can be defined and a statement, which is a possible answer to a scientific question. The hypothesis is proposed on the basis of the researches and the tests, which are already performed. the hypothesis can be tested through different experimental processes and can be proved or disproved according to the results obtained by the experimentation.
Which evidence supports the big bang theory?
Which molecule is a reactant in the first step and a final product in the fourth step of the Calvin Benson Cycle?
RuBP is the answer for sure.
differentiate between solving a problem with science and a problem without science
Answer:
If your using science to sovle problems that means you used scientific method like testing, conclusions, or hypothesis
Explanation:
Solving problems with science means that to solve the problem the scientific method is used. This method includes observing, research, hypothesis , test and conclusion with a help of lot high level theory.
Without science there is not strict process to follow in order to resolve the problem end get to a solution.
The idea that all living things are made up of cells is considered scientific law. This means the idea
Which is an example of the use of plants in human society? Fossil fuel usage causes the elimination of carbon sinks. Plants make flowers to attract insects. Plants store carbohydrates. Clothing is made from plant fibers
Answer: Clothing is made from plant fibers.
Plants are the greatest source of fibers used by textile industry for production of cloths. A fiber is obtain from a natural plant source it is spun into yarn and yarn is converted into fabric used for making cloths. Natural plant fibers are cotton, jute, linen, corn and coir(coconut) fibers are necessary for textile industry.
Starch digestion begins in the mouth. What specifically occurs during starch digestion?
A. Specific hormones break down starch into complex starches.
B. Specific hormones break down starch into simple sugars.
C. Specific enzymes break down starch into amino acids.
D. Specific enzymes break down starch into simple sugars.
Answer: D.Specific enzymes break down starch into simple sugars.
Explanation:
The digestion of food in animals and in humans begins with mouth. In the mouth the teeth grind and mix the food contents with the saliva. The saliva is a fluid which contains enzymes such as salivary amylase which breaks down the starch into simple sugar molecules. Hence, facilitates in the digestion process.
Starch digestion begins in the mouth with the enzyme salivary amylase breaking starch down into maltose. This process continues in the small intestine, where pancreatic amylase further breaks it down into glucose or simple sugars.
Explanation:Starch digestion begins in the mouth where the enzyme salivary amylase, present in saliva, starts the breakdown of starch into maltose, a simpler sugar. This is known as the process of starch digestion. Thus, the correct answer to your question is 'Specific enzymes break down starch into simple sugars' (Option D). Digestion continues in the small intestine where another enzyme, pancreatic amylase, continues this process turning the maltose into glucose, the simplest form of sugar that the body can use for energy.
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The nurse is monitoring a diabetic client with a blood glucose level of 400 mg/dl (22.2 mmol/l). which clinical manifestation would indicate diabetic ketoacidosis (dka)?
With the given results, in order for the nurse to identify the clinical manifestations of diabetic ketoacidosis in which the client would likely have, she needs to observe the following manifestations such as; rise of the blood glucose level which beyond the normal range, there is a rapid breathing which would likely occur that he or she finds it difficult to breathe normally, there is a presence of pain in the abdomen, excessive need of fluids as he or she manifest excessive thirst and lastly, his or her results in the plasma bicarbonate is in the low level. These manifestations could indicate that the client has diabetic ketoacidosis.
which appears to be more dangerous the BRC1 or BRC2 mutation
Answer:
the answer is Brc2 bc of the changes in the mutation
Explanation:
BRCA1 and BRCA2 mutations both increase the risk of certain cancers, primarily breast and ovarian cancer. However, BRCA1 mutations have been associated with a higher risk compared to BRCA2 mutations.
For example, a harmful mutation in the BRCA1 gene is linked to a higher percentage of women developing breast cancer before the age of 70, compared to the general population's risk. Both mutations are crucial in understanding inherited cancer risks.Genetic variations, including mutations in the BRCA genes, can greatly impact a person's susceptibility to specific diseases like breast and ovarian cancer.Give the mechanism of control and co-ordination in animals and plants.
The basic structure of a volcano consists of _____.
The destruction of natural habitat for the development of cities is known as
desertification
suburban sprawl
urbanization
deforestation
If we know what type of rock we are examining, we can figure out
how much it weighs
how hard it is
how it was formed
where it was formed
If you found rocks that had been buried deep within the earth under high heat and pressure, they would most likely be what type of rocks?
Sedimentary
Metamorphic
Igneous
Lava
An advantage of light microscopes compared to electron microscopes is that light microscopes
Answer:
Living cells can be observed using a light microscope; this is not possible with an electron microscope.Unlike electron microscopes, light microscopes allow scientists to observe changing movements in living cells.
Explanation:
Which phase of meiosis lines the chromosomes up in the center of the cell?
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Explain how two family members can have different inherited traits.