How would the permeability of the phospholipid bilayer of plasma membranes be described?
A) The bilayer is always impermeable to small molecules.
B) The bilayer is always permeable to charged atoms and molecules.
C) The bilayer is differentially permeable.
D) The bilayer is impermeable to all atoms and molecules.
C
Biology & Microbiology
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The primary reproductive organ in the human female responsible for gamete and hormone production is the:
a. uterus b. ovary c. vagina d. clitoris e. cervix
Biology & Microbiology
__________ are cells that synthesize bone, whereas
__________ break bone down. Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Refer to Figure 51-2. Which structure will form the blastocoel?
a. 1
b. 2
c. 3
d. 4
e. 5
Biology & Microbiology
What group dominated the Carboniferous period and is now burned as coal?
A) Seedless vascular plants B) Algae C) Angiosperms D) Conifers E) Cycads
Biology & Microbiology