Chapter 3 Cells

Front 1

In the plasma membrane, _________ form(s) the lipid bilayer, _________ determine(s) the fluid nature of the membrane, & _________ mainly determine(s) the function of the membrane.

Back 1

A) phospholipids, cholesterol, proteins

Front 2

Which of the following functioning proteins are found in the plasma membrane?

Back 2

E) All are correct: channel proteins, marker molecules, receptor molecules, enzymes

Front 3

In general, lipid-soluble molecules diffuse through the ________; small, water-soluble molecules diffuse through the __________.

Back 3

C) lipid bilayer, carrier proteins

Front 4

Small pieces of matter & even whole cells, can be transported across the plasma membrane in

Back 4

E) vesicles

Front 5

The rate of diffusion increases if the

Back 5

C) viscosity of a solution decreases

Front 6

Concerning the process of diffusion, at equilibrium

Back 6

E) All are correct: the net movement of solutes stops, random molecular motion continues, there is an equal movement of solute in opposite directions, the concentration of solute is equal throughout the solution

Front 7

If cell is placed in a(n) __________ solution, lysis of the cell may occur.

Back 7

B) hypotonic

Front 8

Suppose that a woman runs a long-distance race in the summer. During the race, she loses a large amount of hyposmotic sweat. You would expect her cells to

Back 8

A) shrink

Front 9

Which of these statements about facilitated diffusion is true?

Back 9

A) Facilitated diffusion requires the expenditure of energy

Front 10

Which of these statements concerning the symport of glucose into cells is true?

Back 10

D) The concentration of glucose can be greater inside cells than outside cells

Front 11

A white blood cell ingests solid particles by forming vesicles. This describes the process of

Back 11

D) pinocytosis

Front 12

D) pinocytosis

Given these characteristics: (1) requires energy, (2) requires carrier proteins, (3) requires membrane channels, (4) requires vesicles…...Choose the characteristics that apply to exocytosis

B) 1, 4

Back 12

B) 1, 4

Front 13

Cytoplasm is found

Back 13

B) outside the nucleus & inside the plasma membrane

Front 14

A cell that synthesizes large amounts of protein for use outside the cell has a large

Back 14

C) amount of rough endoplasmic reticulum

Front 15

Which of these organelles produce large amounts of ATP?

Back 15

B) mitochondria

Front 16

Cylindrically shaped extensions of the plasma membrane that do not move, are supported by actin filaments, & may function in absorption or as sensory receptors are

Back 16

E) microvilli

Front 17

A portion of an mRNA molecule that determines one amino acid in a polpeptide chain is called a(n)

Back 17

C) codon

Front 18

In which of these organelles is mRNA synthesized?

Back 18

A) nucleus