Oncogenes are derived from
A) malignant tumors.
B) proto-oncogenes.
C) mutated keratotic cells.
D) healthy tumor suppressor genes.
E) benign tumors.
B
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The most important predator in salt marshes at low tide are: a. crabs
b. birds. c. nematodes. d. marsh snails.
Match the pathway with the characteristic or example
A) C3 plants B) nucleic acid replication C) severe water restriction D) lysosome passage E) fungi F) salvage pathway G) C4 plants H) carbon assimilation 1) Calvin cycle 2) glycolate pathway 3) Hatch–Slack cycle 4) crassulacean acid metabolism (CAM)
Sigma factor is part of the _____________ complex
A. DNA polymerase B. Tryptophan operon C. Lactose operon D. RNA polymerase E. Reverse Transcriptase
Which component distributes water and nutrients throughout the plant body?
a. ground tissue
b. vascular tissue
c. dermal tissue
d. root
e. shoot