Q. What is the role of enzymes in the DNA replication process?
1. Enzymes read the DNA code and build a new DNA molecule from scratch.
2. Enzymes link together to form a template for a new DNA molecule to be built.
3. Enzymes link adjacent nucleosides together, becoming an integral part of the structure of the new strands of DNA.
4. Enzymes split the DNA molecule into two rails and then transport corresponding nitrogenous bases to each rail.
Answer: 4 (Enzymes split the DNA molecule into two rails and then transport corresponding nitrogenous bases to each rail).
Explanation: DNA replication is not a random process, so replication starts at a particular site in the chromosome using different enzymes.
DNA replication is a complex process that occurs in three steps including initiation, elongation, and termination. These steps require several enzymes and proteins. The studies found that more than 20 different enzymes and proteins play a central role in prokaryotic DNA replication. These proteins have been classified on the basis of their biochemical functions in different stages of DNA replication.
For complete information on enzymes involved in DNA replication, read the posts, 1) DNA replication of prokaryotes, 2) DNA replication in eukaryotes, 3) DNA dependent DNA polymerase.
Q. The alpha-helix and beta-sheet are found at which level of protein organization?
Q. Which cytoskeletal proteins provide the structural support for microvilli?
Q. Which of these does not contain a structural protein?
Q. What level of protein structure is associated with the sequence of amino acids?
Q. Which of the following pertains to typhoid fever?
Q. Which of the following tests is an agglutination test for the bacterium causing typhoid fever?
Q. This is a compound made from a group of covalently bonded atoms?
Q. If two covalently bonded atoms are identical the bond is?
Q. Which of the following are characteristics of G protein-coupled receptors (GPCR)?
Q. What are the second messengers in the GPCR-phospholipase c signal transduction system?
Q. Which of the following have a significant influence on a material’s electrical resistivity?
Q. What are alleles? And an example.
Q. What is one difference between DNA replication of bacteria and eukaryotes?
Q. Which of the following genotypes is homozygous recessive?
Q. If q = .4, what is the frequency of homozygous recessive individuals?
Q. A person who is homozygous recessive at a locus has which of the following?
Q. If cohesin was not produced or not functional what would be the effect on mitosis?