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The primary barrier to passage of water-soluble substances across the plasma membrane is the outer layer of carbohydrates.
Q42: controls anterior pituitary hormone secretion
Q69: Implantation normally occurs within 24 hours after
Q93: high yield of ATP
Q248: Which of the following refers to the
Q272: In the cyclic AMP second messenger system,
Q278: electrical gradient for Na<sup>+</sup> at E<sub>Na+</sub>
Q283: programs complex sequences of movement
Q351: postganglionic fibre that secretes acetylcholine
Q371: Active transport is a kind of _
Q443: fuse with and enter the Golgi complex