Extracts of pathogenic bacteria can transform
harmless bacteria to harmful bacteria unless
__________ enzymes are added to the extract.
a. protein-digesting
b. mRNA-digesting
c. tRNA-digesting
d. DNA-digesting
e. any of these
Answer: d
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A basidium
A. is club-shaped. B. is found within basidiocarp (fruiting body). C. is produced at the tip of hyphae. D. All of the choices are correct.
Sodium-potassium pumps are examples of what type of cellular transport?
a) primary active transport b) secondary active transport c) transport in vesicles d) facilitated diffusion e) hypertonic transport
Where are nephrons found?
a. in mammals b. in insects c. in flatworms d. in annelids
Your lab instructor hands you a root slide and asks you to show her a cell with condensed chromosomes arranged in a straight line. In which section of the root would you begin your search?
A. It doesn't matter; all zones have the same level of mitotic activity. B. Zone of cell division C. Zone of maturation D. Root cap E. Zone of elongation