The three functions of blood are transportation, protection, and ________
Fill in the blank(s) with correct word
regulation
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Most of the water that evaporates from leaves passes out through the
A. cuticle. B. ends of xylem vessels. C. epidermis. D. spaces between epidermal cells. E. stomata.
Why are chloroplasts and mitochondria believed to have originated from ancient prokaryotes? How is
the function and structure of chloroplasts and mitochondria similar and different?
What will be an ideal response?Once the threshold potential of a nerve impulse
is acheived
a. an action potential may occur or it may not. b. an action potential will occur. c. sodium ions close. d. the resting potential immediately follows. e. none of these will happen.
All genetically normal humans have
a) 44 autosomes b) 23 chromosomes c) 46 autosomes d) 8 toes e) two pairs of 22 autosomes, a Y chromosome, and an X chromosome