Please help ensure me ensure my answers are correct. Here is what I have. 1. D, 2. B, 3. E, 4. D, 5. A
1. Which of the following do anaerobic methanogens produce?
A. carbon monoxide
B. carbon dioxide
C. ammonia sulfide
D. methane
E. hydrogen sulfide
2. The term "algae" is used primarily for organisms in which of these groups?
A. Bacteria
B. Protista
C. Plantae
D. Bacteria and Protista only
E. Bacteria, Protista, and Plantae
3. Dinoflagellates
A. may produce red tides that poison and kill fish.
B. are parasites of fish and invertebrates.
C. may undergo a population explosion that turns the ocean red or various colors.
D. are aquatic producers in freshwater or marine habitats.
E. all of these
4. The primitive atmosphere did NOT contain
A. water vapor.
B. free nitrogen.
C. free hydrogen.
D. free oxygen.
E. inert gases.
5. Which of the following statements is NOT characteristic of bacteria?
A. Some have no plasma membrane. ****
B. Some may have hairlike structures called pili.
C. Some may have rigid cell walls.
D. Some may have flagella and move about.
E. Some may have a polysaccharide covering.
1. Which of the following do anaerobic methanogens produce?
A. carbon monoxide
B. carbon dioxide
C. ammonia sulfide
D. methane
E. hydrogen sulfide
2. The term "algae" is used primarily for organisms in which of these groups?
A. Bacteria
B. Protista
C. Plantae
D. Bacteria and Protista only
E. Bacteria, Protista, and Plantae
3. Dinoflagellates
A. may produce red tides that poison and kill fish.
B. are parasites of fish and invertebrates.
C. may undergo a population explosion that turns the ocean red or various colors.
D. are aquatic producers in freshwater or marine habitats.
E. all of these
4. The primitive atmosphere did NOT contain
A. water vapor.
B. free nitrogen.
C. free hydrogen.
D. free oxygen.
E. inert gases.
5. Which of the following statements is NOT characteristic of bacteria?
A. Some have no plasma membrane. ****
B. Some may have hairlike structures called pili.
C. Some may have rigid cell walls.
D. Some may have flagella and move about.
E. Some may have a polysaccharide covering.