The first several cleavages after fertilization occur in the:
a. uterus cavity
b. ovary
c. vagina
d. oviduct
e. uterine wall
d
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If bacteria living in salty seawater were displaced to a freshwater environment, the cell structure that would prevent the cells from rupturing is the ________.
A. capsule B. cell membrane C. endospore D. cell wall E. slime layer
The carbon dioxide needed for photosynthesis enters the plant through the:
a) roots. b) thylakoid. c) stroma. d) root hairs. e) stomata.
The ability of a disease to be transmitted from one person to another or to spread through the population is called ___
a. susceptibility b. transmissibility c. zoonotic d. communicability
An interaction in which one species benefits and the second species is neither harmed nor benefited is known as ____.
A. mutualism B. parasitism C. commensalism D. competition E. predation