A taxis is distinguished from a kinesis because a taxis is ____ movement while a kinesis is ____
movement.
a. ordered; a change in the rate of
b. a migratory; a local
c. random; directional
d. a group; an individual
e. slow; fast
A
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Which of the following are not topoisomers?
A. two molecules having the same number of base pairs but different linking numbers B. two molecules having a different number of base pairs but the same linking number C. two molecules having the same number of base pairs, but one is positively supercoiled and the other is negatively supercoiled D. two molecules having the same number of base pairs, but one is underwound and the other is overwound E. All of these choices are topoisomers.
HIV affects
a. the human reproductive system. b. the human circulatory system. c. the human respiratory system. d. the human immune system. e. the human digestive system
________ are the dominant herbivores of savanna ecosystems
A) Antelopes B) Zebras C) Buffalo D) Insects
The walled asci contain
a. eight diploid nuclei b. eight haploid nuclei c. many multinucleate conidia d. an egg and a sperm e. a zygote