Methanogens are a type of archaea found in various habitats on the planet, including deep-sea vents in the deepest parts of the ocean. They produce methane gas by reducing carbon dioxide, using hydrogen gas under anaerobic conditions. Given these characteristics, methanogens are a type of _____________________.
A) Chemoheterotroph
B) Symbiotic microbe
C) Saprobe
D) Photoautotroph
E) Chemoautotroph
E) Chemoautotroph
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Intestinal parasites can be identified by observing stool samples for the presence of
A) cysts. B) antibodies. C) LPS. D) blood.
Why can eggs be larger than other cell types?
a. eggs contain a large store of nutrients b. eggs do not perform exocytosis c. other cell types need higher concentrations of glucose d. other cell types divide when they get too large e. other cell types require phospholipids for organelle membranes
The duck-billed platypus shares which trait with non-mammalian animals?
a. teeth b. lack of cloaca c. laying eggs d. hair e. females produce milk
Describe two classes of proteins known to be involved in the regulation of the cell cycle
What will be an ideal response?