Which of these is considered a "gatekeeper" that regulates the passage of materials in or out of the cell?
A. Cilia
B. Lysosome
C. Flagellum
D. Plasma membrane
E. Cholesterol molecule
Answer: D
Anatomy & Physiology
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The sliding filament theory of muscle contraction has emerged from research only in the last 10 to 15 years.
Answer the following statement true (T) or false (F)
Anatomy & Physiology
The cells of the blastocyst that become the embryo proper are the cells of the ________.
Fill in the blank(s) with the appropriate word(s).
Anatomy & Physiology
Right atrial volume receptors and hypothalamic osmoreceptors are primarily important in water and salt balance in the body
a. True b. False Indicate whether the statement is true or false
Anatomy & Physiology
The contractile response of a muscle fiber to a single action potential is called a(n) ____________________
Fill in the blank(s) with correct word
Anatomy & Physiology