NBS Chemistry Nucleotides and Nucleic Acids

Question 1

Nucleotides have how many component?

Answer 1

3

Question 2

What are the 3 components of nucleotides?

Answer 2

Phosphate
Sugar
Nitrogenous Base

Question 3

Adenine and Guanine are examples of?

Answer 3

Purines

Question 4

Uracil, Thymine, and Cytosine are examples of?

Answer 4

Pyramidines

Question 5

Which of the following pyramidines is the nitrogenour base of a ribose?
A. Thymine
B. Uracil
C. Cytosine

Answer 5

Cytosine

Question 6

Which of the following Purines is the nitrogenour base of a ribose?
A.Adenine
B. Guanine

Answer 6

Guanine

Question 7

If a phosphate is removed from a nucleotide it is called a________?

Answer 7

Nucleoside

Question 8

Double stranded alpha helix has two strands that run?
A. Parallel
B. Antiparallel
C. Horizontal
D. Transversely

Answer 8

Antiparallel

Question 9

Nucelotides within one strand contain what type of bonds?
A. Hydrogen
B. Phosphodiester
C. Ester
D. Easily broken bonds

Answer 9

Phosphodiester

Question 10

Nucelotides base pairs btwn complimentary strands have what type of bonds?
A. Hydrogen
B. Phosphodiester
C. Ester
D. Glycosidic

Answer 10

Hydrogen

*These are easily broken

Question 11

Where does DNA replication take place?
A. cytoplasm
B. nucleolus
C. nucleus
D. ribosome

Answer 11

nucleus

Question 12

Where does RNA replication take place?
A. cytoplasm
B. nucleolus
C. nucleus
D. ribosome

Answer 12

Nucleolus

Question 13

Which enzyme is responsible for unwinding the DNA strand?
A. RNA polyermase
B. Topoisomerase
C. Thiamine Dehydrogenase
D. DNA polyermase

Answer 13

Topoisomerase

AKA helicase

Question 14

During DNA replication; _____ polymerase acts as a template and makes new DNA from the parent DNA.

Answer 14

RNA

Question 15

What splits the doubled 92 chromosome DNA into two identical 46 chromosome daughter DNA?
A. Topoisomerase
B. mRNA
C. Mitosis
D. DNA doubling

Answer 15

Mitosis

Question 16

Transcription for RNA synthesis is from:
A. 5’ to 3’
B. 3’ to 5’
C. 5’ to 5’

Answer 16

A

5’ to 3’

Question 17

Which enzyme is responsible for making an RNA primer from a DNA template during RNA transcription?
A. RNA polyermase
B. Topoisomerase

Answer 17

RNA Polymerase

Question 18

The DNA template is read \_\_\_\_ bases at a time.
A. 1
B. 3
C. 2
D. 4

Answer 18

3

Question 19

The DNA sequence is also called a:
A. Category
B. Strand
C. Code
D. Codon

Answer 19

Code

Question 20

Which RNA is associated with holding the information to determine the amino acid sequence order?
A. tRNA
B. mRNA
C. rRNA

Answer 20

mRNA

Question 21

Which RNA is the main component of the ribosomal unit which moves along mRNA?
A. tRNA
B. mRNA
C. rRNA

Answer 21

rRNA

Question 22

This RNA jumps on and off, carrying amino acids with it?
A. tRNA
B. mRNA
C. rRNA

Answer 22

tRNA

Question 23

Prior to translation (protein synthesis) which of the following would bind to a ribosome?
A. tRNA
B. Codon
C. Anticodon
D. mRNA

Answer 23

mRNA

Question 24

This contains 3 bases (nucleotides) in the mRNA chain to code for one amino acid?
A. tRNA
B. Codon
C. Anticodon
D. rRNA

Answer 24

Codon

Question 25

``` tRNA has 3 bases that is complementary to a specific codon; this describes which of the following? A. mRNA B. Codon C. Anticodon D. rRNA ```

Answer 25

Anticodon

Question 26

When deal with RNA, what pyrimadine is substituted for thymine?

Answer 26

uracil

Question 27

A-T, C-G for DNA, A-___ and C-G in RNA?

Answer 27

U- URACIL takes thymines spot with adenine pairing

Question 28

Which anticodon binds with the mRNA codon and brings one amino acid to the ribosome? A. rRNA B. tRNA C. mRNA

Answer 28

tRNA

Question 29

``` What is the enzyme responsible for forming a peptide bond with an amino acid on the tRNA? A. RNA polyermase B. Topoisomerase C. Peptidyl transferase D. Aminoacyl-trna syntase ```

Answer 29

Peptidyl Transferase

Question 30

``` An amino acid is attached to a tRNA by which enzyme? A. RNA polyermase B. Topoisomerase C. Peptidyl transferase D. Aminoacyl-trna syntase ```

Answer 30

Aminoacyl-trna synthase

Question 31

T/F: AUG is an example of a stop condon

Answer 31

True

Question 32

``` What is the enzyme associated with DNA formation properties? A. RNA polyermase B. Topoisomerase C. Dnase D. Aminoacyl-trna syntase ```

Answer 32

Dnase

Question 33

What sugar is DNA?

Answer 33

Deoxyribose