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Exam Study Guide Dr. Javed Chapter 3 Study Guide

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Chapter 3 quiz questions with answers

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T or F: The non polar tails of the phospholipid molecules bury themselves in the inferior of the plasma membrane

True

T or F: Cells shrink when in contact with a hypertonic solution

T or F: Cells shrink when in contact with a hypertonic solution

T or F: Channels are open to both sides of the membrane at the same time, but carriers are open to only one side of the membrane at a time

true

At resting membrane potential, there is a slight excess of ______ charges on the inside of the membrane , with a corresponding slight excess of _____ charges on the outside

negative positive

Lipid bilayer functions

-barrier to passage of water soluble substances -membrane fluidity-structural boundary

Protein Functions

-channel formation-receptor sites-membrane-bound enzymes-carriers

Function of Carbohydrates

recognition of "self"

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