Test 3 Cheat Sheet

Question 1

All of the chemical reactions of the cell are called:

Answer 1

metabolism

Question 2

The breakdown of peptidoglycan to N-acetylmuramic acid, N-acetylglucosamine and peptides is an example of:

Answer 2

catabolism

Question 3

Enzymes are:

Answer 3

proteins that function as catalysts

Question 4

Formation of peptide bonds between amino acids to build a polypeptide would be called:

Answer 4

anabolism

Question 5

Enzymes that are produced only when substrate is present are limited:

Answer 5

regulated enzymes

Question 6

When enzymes action stops due to a buildup of end product this control is called:

Answer 6

enzyme repression

Question 7

Exergonic reactions:

Answer 7

occur during aerobic cellular respiration

Question 8

In the cell, energy released by electrons is often used to phosphorylate:

Answer 8

ADP

Question 9

In addition to electrons, which of the following is also involved in electron transfer:

Answer 9

hydrogen protons

Question 10

Among the microorganism, various genomes include:

Answer 10

Chromosomes, plasmid, mitochondrial DNA, chloroplast DNA.

Question 11

Eukaryotic chromosomes differ from prokaryotic chromosomes because only eukaryotes have:

Answer 11

Histone proteins, chromosomes in a nucleus, several to many chromosomes, elongated, not circular, chromosomes.

Question 12

The DNA of microorganisms is made up of subunits called:

Answer 12

nucleotides

Question 13

Which is incorrect about purines:

Answer 13

only found is DNA, not RNA

Question 14

The antiparallel arrangement within DNA molecules refers to:

Answer 14

one helix stands that runs from the 5’ to 3’ direction and the other from the 3’ to 5’ direction.

Question 15

Semiconservative replication refers to:

Answer 15

an original parent DNA strand and one newly synthesized DNA strands comprising a new DNA molecule.

Question 16

The duplication of a cells DNA is called:

Answer 16

replication

Question 17

DNA polymerase III:

Answer 17

synthesizes new DNA only in the 5’ to 3’ direction.

Question 18

Which enzyme joins the Okazaki fragments together:

Answer 18

DNA ligase

Question 19

The site where the old DNA strands separate and new DNA strands will be synthesized is called the:

Answer 19

replication fork

Question 20

All of the following pertain to nitrogenous bases except:

Answer 20

guanine pairs with uracil

Question 21

Groups of three consecutive bases along the DNA of a gene have the code for one:

Answer 21

amino acid

Question 22

The formation of citric acid from oxaloacetate and an acetyl group begins:

Answer 22

Krebs cycle