Module 7-8

Question 1

In eukaryotic cells the start codon for protein synthesis is __________ .

Answer 1

Methionine (AUG)

Question 2

(T/F) RNA is double stranded.

Answer 2

False

Question 3

In the ribosome, what pairs with the codon?

Answer 3

Anticodon

Question 4

(T/F) Uridine is a nucleotide in DNA.

Answer 4

False

Question 5

(T/F) The genetic code for the conversion of mRNA codons to proteins has redundancy.

Answer 5

True

Question 6

For DNA Polymerase III to work which of these components has to act first?

Answer 6

Primase

Question 7

In the ribosome, what is the name of the bond that links one amino acid to the next?

Answer 7

Peptide Bond

Question 8

During mRNA maturation what is the name of the part of the mRNA that is removed?

Answer 8

Intron

Question 9

How many “stop” codons exist?

Answer 9

3

Question 10

(T/F) Strands of the backbone of DNA are parallel?

Answer 10

False (anti-parallel)

Question 11

(T/F) During DNA replication errors are greatly reduced by enzymes that proof read the newly replicated DNA.

Answer 11

True

Question 12

In DNA, what does the nucleotide labeled as A pair with?

Answer 12

T

Question 13

List one type of post-translational modification.

Answer 13

Proteolysis
Glycosylation
Phosphorylation

Question 14

There are two types of protein synthesis in eukaryotic cells. These two types can be distinguished because the polyribosome is either _________ or __________.

Answer 14

free or membrane bound

Question 15

List the two basic categories of nitrogenous bases in nucleic acids.

Answer 15

Purines and Pyrimidines

Question 16

(T/F) DNA replication in eukaryotes is sped up by multiple origins of replication.

Answer 16

True

Question 17

Which nucleotide is different in RNA compared to DNA?

Answer 17

Uridine

Question 18

(T/F) In the lagging stand, the DNA is read from the parental DNA’s 3’ to 5’ end.

Answer 18

True

Question 19

(T/F) The DNA polymerase that replicates the parental strand of DNA reads the parental DNA from 5’ to 3” and makes a new DNA strand from 3’ to 5’.

Answer 19

False (Reads from 3’-5’ on parental strand and replicate 5’-3’)

Question 20

Which enzyme is used first to permit DNA polymerase III to begin replicating the 3’ strand?

Answer 20

Primase

Question 21

RNA synthesis, also called RNA transcription occurs in three phases. List them from beginning to end in order.

Answer 21

Initiation, Elongation, Termination

Question 22

Which sugar is present in RNA?

Answer 22

Ribose

Question 23

How many hydrogen bonds are there between an A and its paired nucleotide?

Answer 23

2

Question 24

The double helix of DNA is wrapped about 1¾ times around which of these components?

Answer 24

Nuclesome

Question 25

The double helix of DNA is wrapped about 1¾ times around which of these components?

Answer 25

Nucleosome

Question 26

Protein synthesis changes from the language of ________ to the language of _______ .

Answer 26

Nucleotides to Amino Acids

Question 27

Which strand is produced more rapidly?

Answer 27

Leading Strand

Question 28

During DNA replication in the lagging strand there is production of this component?

Answer 28

Okazaki Fragment

Question 29

Assume that you have a eukaryotic cell with three chromosomes within it. How many 5’ ends would there be?

Answer 29

Gap 1: 6

Gap 2: 12

Question 30

(T/F) Replication of DNA is semi-conservative.

Answer 30

True

Question 31

Which enzyme unwraps the double helix?

Answer 31

Helicase

Question 32

The Calvin-Benson cycle takes in _____________ and _____________ from the light reaction and also _____________ ____________ to make carbohydrates.

Answer 32

ATP
NADPH+H+
Carbon Dioxide

Question 33

The light reactions produce _____________ and _____________ and this process also results in the release of _____________.

Answer 33

ATP
NADPH+H+
Oxygen

Question 34

List three items required for photosynthesis to occur.

Answer 34

Water
CO2
Light from the sun

Question 35

The most abundant protein in the world is called _____________.

Answer 35

Rubiscos

Question 36

The antenna system is in the _____________ membranes.

Answer 36

Thylakoid