In coastal areas, wind blows in from the sea during the night
Indicate whether the statement is true or false.
ANSWER: False - day
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What would be an expected feature of a plasma membrane that had no integral membrane proteins?
A. The membrane would be unable to transport sodium ions B. The membrane would collapse C. The membrane would have no fluidity D. The membrane would have no cholesterol E. The membrane would not associate with peripheral membrane proteins
Define and explain the importance of the blood-brain barrier
What will be an ideal response?
Which of the following feeding strategies is incorrectly paired with its feeding adaptations?
a. carnivores?well-developed canine teeth b. herbivores?stomachs containing symbiotic bacteria and protists c. animals that feed on body fluids?piercing and sucking mouth parts d. nectar feeders-long tongue e. suspension feeders?poison glands
The fast block to polyspermy involves the:a
release of inhibitors of acrosomal enzymes. b. synthesis of a new sperm-resistant membrane. c. accumulation of calcium ions in the acrosome. d. opening of ion channels that change the polarity of the egg membrane. e. destruction of excess bindin receptors on the sperm.