Self Check 1

Question 1

Which one of the following is NOT a nitrogen-containing base in RNA? 
A) adenine
B) cytosine 
C) guanine 
D) thymine

Answer 1

D

Question 2

3. Which one of the following illustrates the complementary base-pairing of DNA?
A) A-C and G-T
B) A-G and C-T
C) A-T and C-G
D) A-U and C-G

Answer 2

C

Question 3

4. If one side of the DNA molecule has the nitrogen containing bases TAG CCA, what is the sequence of nitrogen containing bases on the opposite side?
A) ATC GGT
B) CGA TTG
C) GCT AAC
D) TAG CCA

Answer 3

A

Question 4

Which one of the following components is NOT part of a nucleotide?
A) a glycerol molecule
B) a nitrogen-containing base
C) a phosphate group
D) a sugar molecule

Answer 4

A

Question 5

5. Where does protein synthesis take place? 
A) mitochondria
B) nucleus 
C) nucleolus 
D) ribosome

Answer 5

D

Question 6

6. Which phase of the cell cycle involves the replication of the DNA molecule? 
A) anaphase
B) interphase 
C) prophase 
D) telophase

Answer 6

B

Question 7

7. Why is mitosis necessary?
   A) to ensure continuity of the species
   B) to ensure the growth and repair of tissues
   C) to produce egg and sperm cells
   D) to vary the characteristics of subsequent generations

Answer 7

B