Leukocytes (white blood cells) account for about ________ of the cells in human blood.
A. 1%
B. 60%
C. 10%
D. 0.1%
Answer: A
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A male cricket creates sounds that we call "chirps" by rubbing one wing against the other. When is this considered an act of communication?
A. Every time the cricket produces a chirp regardless of whether the signal is received by an organism. B. Every time a member of its own species hears a chirp regardless of its response to the signal. C. Every time a female member of its species hears a chirp and changes her behavior in response to the signal. D. Every time the chirp is heard by some other organism that changes its behavior in response to the signal.
What is the incidence of cervical cancer among Indigenous women compared to other groups of Canadian women?
A. 1.7 to 3.5 times lower B. 5.5 to 10 times lower C. 1.7 to 3.5 times higher D. 5.5 to 10 times higher
Cells produced on the inside of the vascular cambium differentiate to form which vascular tissue?
a. cork cambium b. primary phloem c. primary xylem d. secondary phloem e. secondary xylem
What is a relaxase?
What will be an ideal response?