8: NUCLEIC ACID

Question 1

What are the two main types of nucleic acids found in living organism?
a. Enzymes and Hormones
b. Carbohydrates and nucleotides
c. Protein and Lipids
d. DNA and RNA

Answer 1

d. DNA and RNA

Question 2

Which of the following nitrogenous bases is NOT found in RNA?
a. Adenine
b. Thymine
c. Uracil
d. Cytosine

Answer 2

b. Thymine

Question 3

A genetic (inherited) disease that causes sticky, thick mucus to build up in organs, including your lungs and pancreas.
a. Cystic fibrosis
b. Muscular dystrophy
c. Galactosemia
d. Huntington’s disease

Answer 3

a. Cystic fibrosis

Question 4

A mutation can:
I. produce one or more incorrect codons in mRNA.
II. result from mutagens such as radiation and chemicals.
a. Only I is correct
b. Only II Is correct
c. Both I and II are correct
d. Both I and II are incorrect

Answer 4

c. Both I and II are correct

Question 5

Protein synthesis has two processes which are __________.
a. Transcription and Translation
b. Messenger Ribonucleic Acid and Transfer Ribonucleic Acid
c. Transference and Transliteration
d. Deoxyribonucleic Acid and Ribonucleic Acid

Answer 5

a. Transcription and Translation

Question 6

Which is true about DNA Double Helix:
I. Has two strands of nucleotides that wind together.
II. Is held in place by two hydrogen bonds that form between the base pairs A -
T.
III. Is held in place by four hydrogen bonds that form between the base pairs G -
C.
NUCLEIC ACIDS - Group 3
a. Both I and III is correct
b. Only II Is correct
c. Both I and II are correct
d. Both I and II are incorrect

Answer 6

c. Both I and II are correct

Question 7

What type of linkage connects nucleotides to form nucleic acids?
a. Peptide Bond
b. Phosphodiester Bond
c. Glycosidic Bond
d. Ester Bond

Answer 7

b. Phosphodiester Bond

Question 8

Which nitrogenous base is not present in DNA?
a. Uracil
b. Thymine
c. Cytosine
d. Adenine

Answer 8

a. Uracil

Question 9

True or False: Genetic information is maintained each time a cell divides.
a. True
b. False

Answer 9

a. True

Question 10

True or False: The DNA strands unwind, and each parent strand bonds with
new complementary bases during DNA replication.
a. True
b. False

Answer 10

a. True

Question 11

Is the process by which a DNA molecule makes a copy of itself.
a. Protein Synthesis
b. Initiation Process
c. Dna Replication
d. Mitosis

Answer 11

c. Dna Replication

Question 12

It is a sequence of amino acids in a mRNA that determine the amino acid order
of the protein
a. Genetic code
b. Messenger Rna
c. Nucleic Bonds
d. Nucleotides

Answer 12

a. Genetic code