What Are The Dna Base Pairing Rules Free 3 Hydroxyl

In order to develop antibiotics, scientists need to understand how bacteria grow and reproduce.

They can also be covalently linked to membrane phospholipids to form glycolipids.

During an investigation, researchers discover a new toxin that enters a cell after binding to a carbohydrate on the cell membrane.

Which of the following best describes how the toxin attaches to the cell membrane The toxin attaches to specific monosaccharides on the cell membrane.

Since the toxin binds to the carbohydrate regions of the cell membrane, it likely attaches to specific monosaccharides that make up the glyco- portions of glycoproteins and glycolipids.

Which of the following results from the experiment is most consistent with the base-pairing rules of DNA The percentage of adenine nucleotides is roughly equal to the percentage of thymine nucleotides across all species in the experiment.

The percentage of adenine and thymine in DNA is equal because they are complementary base-pairs.

So, we expect the molar ratio of adenine to thymine to be about 1-1 in DNA.

In the table above, the molar ratios of adenine to thymine are about 111, so the percentages of adenine and thymine are about the same in these DNA samples.

The first step in identifying the DNA strand is to measure its length.

To do this, the researcher wants to develop a fluorescent tag that emits light once it binds to both ends of the strand.

What Are The Dna Base Pairing Rules Free 3 Hydroxyl

Which of the following best describes how the researcher should develop a fluorescent tag with an ability to bind to both ends of the strand The tag should have an affinity to bind only free 3 hydroxyl (-OH) and 5 phosphate (-PO4).

All DNA strands have a free 3 hydroxyl group at one end and a free 5 phosphate group at the other end.

By designing a tag that only binds to those groups and then emits light, the researcher can measure the distance between the two fluorescing tags and determine the length of the DNA strand.

Glycogen is a highly branched macromolecule usually stored in liver and muscle cells.

If blood glucose levels decrease, glycogen breaks down to release glucose in a process called glycogenolysis.

In this process, the glycogen polysaccharide goes through hydrolysis and breaks down into glucose monosaccharides.

If a toxin were to inhibit glycogenolysis, which of the following statements best predicts a consequence of this inhibition The covalent bonds between individual glucose monomers will not be cleaved.

In order for a glucose monomer to be released from the glycogen polymer, the covalent bonds that connect the individual monomers must be cleaved through hydrolysis.

One factor that is essential for bacterial growth and reproduction is protein synthesis.

By understanding how bacteria synthesize proteins, scientists can then attempt to develop antibiotics that block bacterial protein synthesis during an infection.

Which of the following questions will best direct an investigation on how to develop an antibiotic that inhibits protein synthesis in bacteria How can the formation of covalent bonds between amino acids be blocked In a growing polypeptide chain, amino acids are connected by the formation of covalent bonds at the carboxyl terminus.

If this is blocked, protein synthesis will be inhibited because amino acids cant be added to the polypeptide chain.