The secretion of excess water via a contractile vesicle of a Paramecium cell is an example of
A) active transport.
B) osmosis.
C) simple diffusion.
D) exocytosis.
E) facilitated diffusion.
D
Biology & Microbiology
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Deoxyribonucleic acid contains the genetic information of a cell. It is better known as
a. vitamin D. b. reproductive enzymes. c. RNA. d. DNA. e. vitamin B12.
Biology & Microbiology
A cell copies its DNA during ________
a. S b. mitosis c. G1 d. G2
Biology & Microbiology
Many amphibians now face extinction, and one cause is believed to be a(n) __________ fungus.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
The prokaryotes that cause tooth decay have a ________ relationship with humans
A) parasitic B) predatory C) mutualistic D) competitive
Biology & Microbiology