Chapter 7 The Blueprint of Life From DNA to Protein

Question 1

The phrase “one gene-one enzyme” is associated with the work of

A. Lederberg.

B. Watson and Crick.

C. Beadle and Tatum.

D. Mendel.

Answer 1

C. Beadle and Tatum.

Question 2

The two strands of DNA are bonded to one another by

A. covalent bonds.

B. oxygen bonds.

C. hydrogen bonds.

D. carbon bonds.

Answer 2

C. hydrogen bonds.

Question 3

Which pairing is incorrect?

A. A:T

B. G:C

C. A:U

D. A:G

Answer 3

D. A:G

Question 4

What structure is indicated by: 10A, 15T, 3G, 7C?

A. double-stranded RNA

B. double-stranded DNA

C. single-stranded RNA

D. single-stranded DNA

Answer 4

D. single-stranded DNA

Question 5

Rotating the following answers any way necessary, but NOT changing their sequence, which is/are complementary to the sequence 5’ AGGCUAAC 3’?

A. 5’ TCCGATTG 3’

B. 3’ TCCGATTC 5’

C. 5’ CTTAGCCT 3’

D. 3’ TAAGCTTA 5’

E. 3’ TCCGATTC 5’ AND 5’ CTTAGCCT 3’

Answer 5

E. 3’ TCCGATTC 5’ AND 5’ CTTAGCCT 3’

Question 6

GCCCAAAG is a molecule of

A. RNA.

B. DNA.

C. protein.

D. cannot tell as written.

Answer 6

D. cannot tell as written.

Question 7

RNA is characterized by which one of the following features?

A. Deoxyribose.

B. Thymine.

C. Ribose.

D. Double-stranded.

Answer 7

C. Ribose.

Question 8

DNA is characterized by which of the following feature(s)?

A. Ribose.

B. Single-stranded.

C. Deoxyribose.

D. Thymine.

E. Deoxyribose AND thymine.

Answer 8

E. Deoxyribose AND thymine.

Question 9

Which is not true of RNA?

A. It is usually single-stranded.

B. It functions in the cytoplasm.

C. It contains uracil.

D. It contains ribose.

E. There are 4 functional types.

Answer 9

E. There are 4 functional types.

Question 10

The 3’ end of DNA

A. refers to the end that has a hydroxyl group attached to the number 3 carbon of deoxyribose.

B. attaches to the 5’ phosphate group of the incoming nucleotide.

C. always has thymine attached to it.

D. usually has guanine attached to it.

E. refers to the end that has a hydroxyl group attached to the number 3 carbon of deoxyribose AND attaches to the 5’ phosphate group of the incoming nucleotide.

Answer 10

E. refers to the end that has a hydroxyl group attached to the number 3 carbon of deoxyribose AND attaches to the 5’ phosphate group of the incoming nucleotide.

Question 11

Which of the following is/are true of DNA replication?

A. It starts at the origin of replication.

B. Nucleotides are added to the 3’ end.

C. It requires an RNA primer to get started.

D. It utilizes polymerases.

E. All of the choices are true.

Answer 11

E. All of the choices are true.

Question 12

DNA replication is

A. conservative.

B. interspersive.

C. semiconservative.

D. chain reference.

Answer 12

C. semiconservative.

Question 13

Which is true about DNA replication?

A. It is semiconservative.

B. It starts at an origin of replication.

C. It is bi-directional.

D. It requires RNA primers.

E. All of the choices are correct.

Answer 13

E. All of the choices are correct.

Question 14

The term antiparallel

A. refers to the structure of single-stranded RNA.

B. is synonymous with semiconservative.

C. refers to the opposite orientation of the two strands in DNA.

D. refers to a type of prokaryotic replication.

Answer 14

C. refers to the opposite orientation of the two strands in DNA.

Question 15

The lagging strand

A. is the third type of RNA.

B. is found during RNA replication.

C. is necessary due to the properties of the enzymes and the antiparallel nature of DNA.

D. is always the bottom strand.

Answer 15

C. is necessary due to the properties of the enzymes and the antiparallel nature of DNA.

Question 16

Which is true about the RNA transcript?

A. It is formed using the DNA minus strand as a template.

B. It has the same 5’-3’ orientation as the DNA positive strand.

C. It is made in short fragments that are then stitched together.

D. The template starts at the promoter region.

E. It is formed using the DNA minus strand as a template, it has the same 5’-3’ orientation as the DNA positive strand AND the template starts at the promoter region.

Answer 16

E. It is formed using the DNA minus strand as a template, it has the same 5’-3’ orientation as the DNA positive strand AND the template starts at the promoter region.

Question 17

Which is true about prokaryotic (bacterial) RNA polymerase?

A. It is used during transcription.

B. It does not require a primer.

C. It has a detachable subunit, sigma factor, which recognizes the promoter.

D. It reads the template in the 3’-5’ direction.

E. All of the choices are true.

Answer 17

E. All of the choices are true.