C.Multiple Choice Questions

Instructions: Select the single best answer to each of the questions given

below. Each question is worth one mark, for a total of 30 marks.

  1. Which of the following is true for photons?
AThey have a tiny mass but no energy.
BThey have no mass but a tiny amount of energy.
CThey have both a tiny mass and a tiny amount of energy.
DThey cannot interact with matter.
EThey are always reflected when they collide with matter.
  1. Bioluminescence
Ais important for photosynthesis.
Bproduces a large amount of heat.
Cusually involves chloroplasts.
Doccurs in some plants living in the deep seas.
Eoccurs when an excited electron returns to its ground state.
  1. Pigment molecules absorb light because
Athey have a conjugated system of single and double carbon bonds.
Bthey have a highly complex chemical structure.
Cthey have several ring systems.
Dthey are able to reflect photons back and forth.
Etheir molecules have a characteristic size and shape.
  1. The 9+2 structure refers to
Athe arrangement of microfilaments in prokaryotes.
Bthe arrangement of microfilaments in eukaryotes.
Cthe arrangement of microtubules in the flagella of eukaryotes.
Dmicrofilaments in a cross-section of prokaryote flagella.
Ethe intermediate filaments in eukaryotes.

4 Biology 204

  1. Which of the following processes would be considered most recent in

evolutionary terms?

Aphotosynthesis
Boxygenic photosynthesis
Cfermentation
Daerobic respiration
Eanaerobic respiration
  1. Which of the following structures is NOT found in both prokaryotes

and eukaryotes?

Aflagella
Bcytoplasm
CDNA
Dnucleoid
EATP
  1. Which of the following terms refers to the idea of an RNA world?
Aribozymes
Bribosomes
CATP
Dvirus
Ebacterium
  1. Trade winds are
Awinds near the poles.
Bocean currents.
Cwinds in temperate zones.
Dwinds in the tropics.
Ewesterly winds.
  1. A bacterial population that becomes resistant to antibiotics is an

example of

Aadaptive radiation.
Bselection.
Cchemoautotrophy.
Dtransmission.
Ebiodiversity.

Principles of Biology I 5

  1. The sun shines directly over the equator
Aduring summer solstice.
Bduring winter solstice.
Cduring March equinox.
Dduring both summer and winter solstices.
Ethroughout the year.