Based on the energy and carbon sources of humans, how would humans be classified?
A. as chemoautotrophs
B. as chemoheterotrophs
C. as photoheterotrophs
D. as photoautotrophs
B
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Humans contract Chagas disease when the reduviid bug defecates while taking a blood meal and the parasites in the feces are rubbed or scratched into the bite wound or onto mucosal surfaces. Which stage in the blood infects the host cells?
a. Amastigote b. Epimastigote c. Trypomastigote d. Promastigote
Pollution affects species diversity, thus the species richness of a highly polluted stream is __________
compared with that of a nearby pristine stream. a. low b. high c. no different d. more dense e. complex
Which of the following statements regarding triglyceride molecules is false?
A) Triglycerides consist of three fatty acids attached to a glycerol molecule. B) Triglycerides play a role in energy storage. C) Triglycerides are a type of fat. D) Triglycerides are hydrophilic.
Flagella occur in both prokaryotes and eukaryotes. Which of the following statements DOES NOT describe how the flagella of prokaryotes and eukaryotes differ?
A. Eukaryotic flagella have the motor protein dynein whereas the prokaryotic one does not. B. Eukaryotic flagella have microtubules in a cytoskeleton whereas prokaryotic ones do not. C. The filament of eukaryotes is multilayered whereas that of prokaryotes is a single strand. D. Prokaryotic flagella have a basal apparatus and hook that rotates the filament whereas eukaryotic flagella do not. E. The eukaryotic flagellum is covered by the plasma membrane whereas that of the prokaryotes is not.