|
|
|
1.
|
In the absence of oxygen, which of the following processes can produce
ATP? Choose all that apply.
|
|
|
2.
|
How does alcohol fermentation differ from lactic acid fermentation?
a. | alcohol fermentation produces more ATP | b. | alcohol fermentation requires
oxygen | c. | alcohol fermentation releases CO2 and produces alcohol as a
byproduct | d. | alcohol fermentation breaks down alcohol to produce
ATP |
|
|
|
3.
|
In which way is anaerobic respiration different from fermentation?
a. | anaerobic respiration generates ATP through an electron transport chain (oxidative
phosphorylation) | b. | anaerobic respiration proceeds in the absence of oxygen | c. | anaerobic
respiration produces ATP through substrate-level phosphorylation | d. | anaerobic
respiration produces lactate as a byproduct |
|
|
|
4.
|
An organism that uses sunlight as an energy source to digest organic molecules
would be classified as a
a. | photoautotroph. | c. | chemoautotroph. | b. | photoheterotroph. | d. | chemoheterotroph. |
|
|
|
5.
|
Which statement correctly describes the importance of nitrogen fixation?
a. | Atmospheric nitrogen is incorporated into amino acids by heterotrophs, then it is
broken down by decomposers and added into the soil. | b. | Carbon dioxide (CO2) is
combined with atmospheric nitrogen (N2) by plants during the Calvin cycle so that it is
converted into a form animals can digest. | c. | Only photoheterotrophs are able to fix
nitrogen, which converts it into the ammonia (NH3) needed by plants and
animals. | d. | Most organisms can’t directly use atmospheric nitrogen (N2) so it
must be incorporated into a biologically useful molecule such as ammonia
(NH3). |
|
|
|
6.
|
The bacterium Clostridium is heterotrophic and is unable to survive in
the presence of oxygen. Which term could be used to describe this organism?
a. | facultative anaerobe | c. | heterocyst | b. | obligate anaerobe | d. | biofilm |
|