Biology Multiple Choice

1. DNA contains all of the following molecules EXCEPT: *

uracil

guanine

adenine

deoxyribose

phospate

2. In aerobic respiration, the final electron acceptor in the electron
transport chain is: *

NAD+

O2

H2O

NADP+

H2

3. A macromolecule which consists of a polymer of amino acids: *

glycogen

cellulose

protein

trigylceride

nucleic acid

4. Lipid which consists of three fatty acids covalently bonded to
glycerol: *

glycogen

cellulose

protein

trigylceride

nucleic acid

5. The appendix of a human and the hipbone of a whale: *

analagous structures

homologous structures

divergent evolution

convergent evolution

vestigial structures

6. Which of the following is a characteristic of arteries?: *

They contain valves which prevent backflow.

They carry blood away from the heart.

Blood is kept moving by the contraction of voluntary muscles.

They are thin-walled blood vessels.

They always carry oxygenated blood.

7. Photosynthesis in plants does not require the availability of: *

oxygen

carbon dioxide

water

light

chloroplasts

8. Which of the following is not a trait of an anabolism in the
metabolism process?: *

Nutrients and molecules form complex molecules.

Uses simple sugars as building blocks for more complex molecules.

The process of breaking down complex molecules to release energy.

Uses amino acids as building blocks for more complex molecules.

9. If a segment of DNA is 5’-TAC GAT TAG-3’, the RNA that results
from the transcription of this segment will be: *

3’-TAC GAT TAU-5’

3’-ATG CTA ATA-5’

3’-UAC GAU UAG-5’

3’-AAC GAU UAA-5’

3’-AUG CUA AUC-5’

10. When hydrogen ions are pumped out of the mitochondrial matrix,
across the inner mitochondrial membrane, and into the space between the
inner and outer membranes, the result is: *

Damage to the mirochondrion

The reduction of NAD

The restoration of the Na-K balance across the membrane

The creation of a proton gradient

The lowering of pH in the mitochondrial matrix

11. A paramecium eliminates excess water by means of: *

Contractile vacuoles

Lysosomes

An oral groove

Nucleolus

12. In flowering plants, the ripened ovary develops into a: *

seed

cotyledon

fruit

zygote

13. In humans, the gene for polydactyly (having extra fingers or toes)
is dominant over the gene for the normal number of digits. If parents
who are both homozygous dominant for polydactyly have four children, how
many of these children would most likely have extra fingers or toes?: *

0

2

3

4

14. Geographic and reproductive isolation are most closely associated
with: *

speciation

extinction

overproduction

competition

15. Protozoa are classified by the presence of cilia, flagella, and
pseudopods or by their nonmotility. This classification method is based
on their means of: *

growth

circulation

reproduction

locomotion