Lecture 18: Energy Nutrient Acquisition

Question 1

1. As a cell increases in size, its volume grows faster
   than its:
   A. Surface area
   B. Membranes
   C. Surface area2
   D. Cytoplasm

Answer 1

A. Surface area

Question 2

2. If an organism used CO2 as a carbon source and chemicals as an energy source, it would be classified as:
   A. Photoautotroph
   B. Chemoheterotroph
   C. Chemoautotroph
   D. Photoheterotroph

Answer 2

C. Chemoautotroph

Question 3

3. Approximately how much solar energy makes it to
   the surface of the earth?
   A. 30 Wm-2
   B. 230 Wm-2
   C. 1370 Wm-2
   D. 68 Wm-2

Answer 3

D. 68 Wm-2

Question 4

4. These fungi form sheaths of hyphae over the root and grow into the extracellular spaces.
   A. Arbuscular mycorrhizal fungi
   B. Ectomycorrhizal fungi
   C. Mycorrhizae
   D. Yeasts

Answer 4

B. Ectomycorrhizal fungi

Question 5

5. What animals have teeth that include broad, ridged
   molars and pre-molars for grinding?
   A. Carnivores
   B. Omnivores
   C. Herbivores
   D. Detritivores

Answer 5

C. Herbivores

Question 6

If an organism used CO2 as a carbon source and light as an energy source, it would be classified as a:

A) Photoheterotroph.

B) Chemoautotroph.

C) Chemoheterotroph.

D) Xenoautotroph.

E) Photoautotroph.

Answer 6

E) Photoautotroph

Question 7

A grasshopper feeding on the leaves of a corn plant is an example of which type of feeding mechanism?

A) filter feeder

B) bulk feeder

C) fluid feeder

D) seafloor feeder

E) substrate feeder

Answer 7

E) substrate feeder