Each daughter cells has _______ as many chromosomes as the parent cell
Fill in the blank(s) with the appropriate word(s).
Answer: half
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Cytoplasmic streaming depends on the protein ________.
Fill in the blank(s) with the appropriate word(s).
The ultimate source of genetic variation within a population is:
a. mutations in DNA. b. adaptation of a species to environmental changes. c. homeostatic mechanisms that compensate for environmental changes. d. a sensory system that can detect an environmental change. e. a system of locomotion that allows an organism to escape environmental changes.
Which immune system protects the body from its own cancerous cells?
A) cell-mediated immune system B) antibody-mediated immune system C) enzyme immune system D) inflammatory immune system
Which of the following is an adaptation that enables cephalopods to escape from their predators?
a. torsion b. a hard shell c. a modified radula d. rapidly changing colors e. poisonous salivary secretions