Experiments have shown that increased nitrogen may affect the community composition of ____ fungi
a. mycorrhizal fungi alone
b. club fungi alone
c. saprobic fungi alone
d. both mycorrhizal and club
e. both mycorrhizal and saprobic
ANSWER: e
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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 microtubules in a cytoskeleton whereas prokaryotic ones do not. B. Eukaryotic flagella have the motor protein dynein whereas the prokaryotic one does not. C. The eukaryotic flagellum is covered by the plasma membrane whereas that of the prokaryotes is not. D. Prokaryotic flagella have a basal apparatus and hook that rotates the filament whereas eukaryotic flagella do not. E. The filament of eukaryotes is multilayered whereas that of prokaryotes is a single strand.
Examine Figure 23.2 in your textbook. If we define the taxon Actinopterygii to include the Ray -finned fish, Coelacanths, Lungfish, Tetrapods, and their most recent common ancestor, it would be a _____ group
A. monophyletic B. paraphyletic C. polyphyletic
This fish is infected with a(n)
1.diatom
2.water mold
3.euglenoid
4.alga
The process of making multiple copies of a gene by inserting it into a host genome and culturing the host is an example of ________
A) gene cloning B) PCR C) STR analysis D) whole-genome shotgun method