Ch 6/14 additional questions

Question 1

energy is stored long term in the bonds of __ and short term to perform work in __

Answer 1

glucose, ATP

Question 1

DNA replication involves unwinding two strands of parent DNA, copying each strand to synthesize complementary strands, and releasing the parent and daughter DNA. Which of the following accurately describes this process?

Answer 1

anabolic process

Question 2

Endergonic reactions have a __ ∆G and exergonic reactions have a __ ∆G.

Answer 2

positive, negative

Question 3

Endergonic reactions __ energy and exergonic reactions __ energy.

Answer 3

consume, release

Question 4

What is the best way to judge the relative activation energies between two given chemical reactions?

Answer 4

compare their reaction rates

Question 5

The energy released by the hydrolysis of ATP is____

Answer 5

providing energy to coupled reactions

Question 6

In eukaryotes, what is the DNA wrapped around?

Answer 6

histones

Question 7

If a cell needs to correct a mistake, how does it know which side of the DNA is the original?

Answer 7

The parent group is marked with a methyl group

Question 8

DNA replication is the process of…

Answer 8

copying DNA to prepare for division

Question 9

An example of an endergonic reaction would be…

Answer 9

anabolism

Question 10

If feedback inhibition turned off this metabolic pathway, where would the inhibitor bind? A->B->C->D

Answer 10

the enzyme between A and B

Question 11

As temperature rises just a little past optimum, what happens to enzymic activity?

Answer 11

enzyme will start producing less product

Question 12

What causes DNA replication to have leading and lagging strands?

Answer 12

DNA polymerase can only work in one direction

Question 13

How many enzymes do we expect in this metabolic process? A->B->C->D

Answer 13

3

Question 14

The first law of thermodynamics predicts what?

Answer 14

There is a limited amount of energy in the universe

Question 15

If swapping a nucleotide causes a new amino acid to be inserted in the subsequent protein its called…

Answer 15

missense

Question 16

If A->B->C->D represents a metabolic pathway, then A would be the…

Answer 16

substrate

Question 17

In which direction does DNA replication take place?

Answer 17

5’ to 3’

Question 18

If the sequence of the 5’-3’ strand is AATGCTAC, then the complementary sequence has the following sequence:

Answer 18

3’-TTACGATG-5’

Question 19

The experiments by Hershey and Chase helped confirm that DNA was the hereditary material on the basis of the finding that:

Answer 19

radioactive phosphorus were found in the pellet

Question 20

Meselson and Stahl’s experiments proved that DNA replicates by which mode?

Answer 20

semi-conservatively

Question 21

Which of the following components is not involved during the formation of the replication fork?
single-strand binding proteins
helicase
origin of replication
ligase

Answer 21

ligase

Question 22

Which of the following does the enzyme primase synthesize?

Answer 22

RNA primer

Question 23

The ends of the linear chromosomes are maintained by..

Answer 23

telomerase

Question 24

The initial mechanism for repairing nucleotide errors in DNA is…

Answer 24

DNA pol proofreading