Lab: Building Proteins from RNA

Question 1

Which is composed of amino acids and determines all the structures and functions of organisms?

Revolt · Accepted Answer

protein

Question 2

Which describes the function of a peptide bond?'

Revolt · Accepted Answer

It connects amino acids.

Question 3

Only the proteins that the bacteria Escherichia coli (E. coli) needs are synthesized at any given time. For example, when lactose is available in the environment, E. coli will express the lac genes that allow it to break down lactose to obtain energy. When lactose is not present, these genes are not expressed.Which prevents the lac genes in the DNA of E. coli from being expressed most of the time?

Revolt · Accepted Answer

the lac repressor

Question 4

During which process is mRNA converted into a sequence of amino acids for protein production?

Revolt · Accepted Answer

translation

Question 5

Which organelle is the location where mRNA is translated into a protein?

Revolt · Accepted Answer

ribosomes

Question 6

Which is the purpose of transfer RNA?

Revolt · Accepted Answer

to bring amino acids to the ribosomes to be assembled into proteins

Question 7

Which occurs during translation?

Revolt · Accepted Answer

mRNA codons are joined by tRNA anticodons to assemble amino acids to form a protein.

Question 8

Which summary below correctly describes what occurs during transcription?

Revolt · Accepted Answer

A DNA template is used to create an mRNA strand.

Question 9

The study of Escherichia coli (E. coli) led researchers to new experimental designs for studying operons. Which experimental design did the scientists use?

Revolt · Accepted Answer

Read the genome sequence to determine the quantity and organization of operons.

Question 10

The diagram shows one step in the process of protein synthesis.Which step is shown?

Revolt · Accepted Answer

translation

Lab: Building Proteins from RNA Answers

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