A Gene Is Usually — I Hate CBT's

Question: The central dogma describes how the genes in the nucleus work to produce an organism’s phenotype. Another way of putting it is that the central dogma follows the flow of information from _____.

A). protein to DNA

B). protein to RNA

C). RNA to ribosomes

D). DNA to protein

Answer: D). DNA to protein

Question: DNA carries out two basic functions in cells: (1) information storage and transfer (genes can be copied and passed to offspring) and (2) the “blueprint” function (genes provide instructions for building proteins). The key process for information storage and transfer to offspring cells is _____.

A). DNA replication

B). transcription

C). translation

D). mRNA processing

Answer: A). DNA replication

Question: many nucleotide bases would be required to code for a protein chain that is 100 amino acids long?

A). 100

B). 300

C). 20

D). 4

Answer: B). 300

Question: tRNA molecules work to _____.

A). transcribe DNA to mRNA

B). translate DNA to produce a specific amino acid sequence

C). transcribe the amino acid sequence to DNA

D). translate mRNA to produce a specific amino acid sequence

E). none of the above

Answer: D). Translate mRNA to produce a specifc amino acid sequence

Question:

Answer: C). mRNA reprocessing…gene regulation

Question: Which of the following build(s) new strands of DNA?

A). The origins of replication

B). DNA polymerases

C). Parental DNA

D). The leading strand

E). The lagging strand

Answer: B). DNA polymerases

Question:

Answer: B). The leading strand is built continuously, and the lagging strand is built in pieces.

Question: During DNA replication, which nucleotide will bind to an A nucleotide in the parental DNA?

A). U

B). T

C). G

D). A

E). C

Answer: B). T

Question: The molecule that seals the gaps between the pieces of DNA in the lagging strand is

A). RNA.

B). the leading strand.

C). DNA polymerase.

D). the replication fork.

E). DNA ligase.

Answer: E). DNA ligase.

Question:

Answer: D). DNA ligase adds nucleotides to the lagging strand.