Proteins from Genes (U3 S4)

Question 1

Which segments of an mRNA are cut out and remain in the nucleus?

Accepted Answer

introns

Question 2

From what type of monomer are nucleic acids made?

Accepted Answer

nucleotides

Question 3

A ___________ mutation changes the reading frame of the mRNA, which results in a drastically different protein.

Accepted Answer

frameshift

Question 4

The _____________ blocks RNA polymerase from transcribing a gene by binding to the operator.

Accepted Answer

repressor

Question 5

A(n) ___________ point mutation occurs when a single nucleotide is switched for another nucleotide.

Accepted Answer

substitution

Question 6

An enzyme, __________________, unwinds the DNA double-helix then adds and links RNA nucleotides into RNA molecules.

Accepted Answer

RNA polymerase

Question 7

________________ RNA are a part of the ribosome's structure.

Accepted Answer

Ribosomal

Question 8

Which type(s) of RNA is involved in translation?

Accepted Answer

All are correct!

Question 9

A _______ mutation results in a codon that codes for the same amino acid, which doesn't affect the protein.

Accepted Answer

silent

Question 10

From what type of monomer are proteins made?

Accepted Answer

amino acid

Question 11

The production of proteins according to the instructions in an organism's genes is called ______________.

Accepted Answer

gene expression, protein synthesis

Question 12

A(n) ______________ point mutation occurs when one or more nucleotides are removed from the gene.

Accepted Answer

deletion

Question 13

A _______ mutation results in a codon that codes for a different amino acid, changing the function of the protein.

Accepted Answer

missense

Question 14

In prokaryotic cells, transcription and translation both occur in the nucleus.

Accepted Answer

False

Question 15

By what type of bond are amino acids held together in a protein?

Accepted Answer

peptide

Question 16

In mRNA, three nucleotide sequences, called __________, carry genetic instructions to make proteins.

Accepted Answer

codons

Question 17

In ____________, ribosomes read the instructions in a strand of RNA to construct a polypeptide amino acid chain.

Accepted Answer

translation

Question 18

A(n) ______________ point mutation occurs when one or more nucleotides are added to the gene.

Accepted Answer

insertion

Question 19

The process by which genetic information coded in DNA is transferred to a molecule of RNA is called ____________.

Accepted Answer

transcription

Question 20

Which segments of mRNA are spliced back together and exit the nucleus?

Accepted Answer

exons

Question 21

_______________ RNA attach to an mRNA in the ribosome, bringing in amino acids for a polypeptide chain.

Accepted Answer

Transfer

Question 22

By what type of bond are nucleotides held together in a nucleic acid?

Accepted Answer

covalent

Question 23

A _________ mutation results in a ‘STOP’ codon, which shortens the protein.

Accepted Answer

nonsense

Question 24

Transcription begins at the ___________, a sequence of DNA that signals the start of a gene.

Accepted Answer

promoter

Question 25

Which of the following is NOT a stop codon?

Accepted Answer

UGG

Question 26

_______________ RNA carries the genetic code in three-nucleotide sequences to ribosomes.

Accepted Answer

Messenger

Question 27

Which of the following is the START codon, which codes for methionine?

Accepted Answer

AUG

Question 28

The promoter region is overlapped by the region called the ___________, which serves as an on/off switch for the gene.

Accepted Answer

operator

Question 29

In eukaryotic cells, transcription occurs in the nucleus and translation occurs in the cytoplasm.

Accepted Answer

True

Proteins from Genes (U3 S4)

Questions 29

Proteins from Genes (U3 S4)

Questions 29