The primary producers for hydrothermal vent ecosystems are
A. chemoautotrophs.
B. chemoheterotrophs.
C. phytoplankton.
D. cyanobacteria.
E. algae.
Answer: A
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Select the correct meaning for the following pedigree symbol.
A) Unaffected male
B) Unaffected female
C) Mating
D) Affected male
E) Affected female
Which of the following is a reason to graft
plants?
a. to maintain the quality of a plant b. to increase the hardiness of a plant c. to avoid plant diseases d. to produce seedless fruits e. all of these are reasons to graft plants
Which of the following is NOT a characteristic of
viruses? a. Contains DNA or RNA genetic material. b. Contains cytoplasm and ribosomes. c. Has a protein coat. d. Can only replicate inside a living host cell. e. Is very small.
Bioenergetics can be simply defined as
A) a subdivision of biology. B) applied thermodynamics. C) the units in which energy is expressed. D) the application of biological principles to physics. E) holding constant the variables in the universe.