The function of ribosomes is to synthesize:
A) polysaccharides.
B) proteins.
C) RNA.
D) lipids.
E) DNA.
Answer: B
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If a foreign gene is cloned into an expression host, it is important that the host itself
A) not produce the protein being studied. B) produce the protein in larger amounts than the vector. C) repress the genetic expression being studied. D) produce signal proteins to tag the host protein.
The condition of having no sperm in the semen is called ____________________
Fill in the blank(s) with correct word
Pore in plasma membrane that allows water movement.
Choose the letter of the best match: A. abscisic acid B. trichomes C. aquaporin D. endodermis E. stoma
Which statement about mycorrhizae is FALSE?
a. They are symbiotic associations between a fungus and a plant root. b. They increase the uptake of nutrient minerals by the plant.
c. Arbuscular mycorrhizae are extracellular. d. Endomycorrhizae are intracellular. e. Members of the Glomeromycota may be involved.