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Human Biology

Sylvia S. Mader, Michael Windelspecht

Chapter 3

Cell Structure and Function - all with Video Answers

Educators

Chapter Questions

01:48

Problem 1

As the size of a cell decreases, the ratio of its surface area to volume
a. increases.
b. decreases.
c. stays the same.

Joanna Quigley
Joanna Quigley
Numerade Educator
01:01

Problem 2

The cell theory states that
a. all life comes from preexisting cells.
b. all life is composed of cells.
c. the cell is the basic unit of life.
d. All of these are correct.

Joanna Quigley
Joanna Quigley
Numerade Educator
00:34

Problem 3

Prokaryotic cells contain all of the following, except
a. cytoplasm.
b. plasma membrane.
c. DNA.
d. a nucleus.

Joanna Quigley
Joanna Quigley
Numerade Educator
01:04

Problem 4

The endosymbiotic theory explains which of the following?
a. the origins of the first prokaryotic cell
b. the formation of the plasma membrane
c. why DNA is the genetic material in all cells
d. how eukaryotic cells evolved from prokaryotic cells

Joanna Quigley
Joanna Quigley
Numerade Educator
05:01

Problem 5

Which of the following is not part of the fluid-mosaic model?
a. phospholipids
b. proteins
c. cholesterol
d. chromatin

Prashant Bana
Prashant Bana
Numerade Educator
00:58

Problem 6

Facilitated transport differs from diffusion in that facilitated diffusion
a. involves the passive use of a carrier protein.
b. involves the active use of a carrier protein.
c. moves a molecule from a low to a high concentration.
d. involves the use of ATP molecules.

Joanna Quigley
Joanna Quigley
Numerade Educator
00:57

Problem 7

When a cell is placed in a hypotonic solution,
a. solute exits the cell to equalize the concentration on both sides of the membrane.
b. water exits the cell toward the area of lower solute concentration.
c. water enters the cell toward the area of higher solute concentration
d. solute exits and water enters the cell.

Tate Hilken
Tate Hilken
Numerade Educator
00:54

Problem 8

Match the description to the correct answer in the following key. Answers may be used more than once.
Key:
a. Golgi apparatus
b. nucleus
c. ribosome
d. lysosome
location of the chromatin and nucleolus

Joanna Quigley
Joanna Quigley
Numerade Educator
00:54

Problem 9

Match the description to the correct answer in the following key. Answers may be used more than once.
Key:
a. Golgi apparatus
b. nucleus
c. ribosome
d. lysosome
organelle where proteins and lipids from the ER are modified

Joanna Quigley
Joanna Quigley
Numerade Educator
00:51

Problem 10

Match the description to the correct answer in the following key. Answers may be used more than once.
Key:
a. Golgi apparatus
b. nucleus
c. ribosome
d. lysosome
contains digestive enzymes

Joanna Quigley
Joanna Quigley
Numerade Educator
00:37

Problem 11

Match the description to the correct answer in the following key. Answers may be used more than once.
Key:
a. Golgi apparatus
b. nucleus
c. ribosome
d. lysosome
the site of protein synthesis

Joanna Quigley
Joanna Quigley
Numerade Educator
00:52

Problem 12

The ribosomes on the rough endoplasmic reticulum assemble _________, while _______ are assembled in the smooth endoplasmic reticulum.
a. proteins; phospholipids
b. cholesterol; proteins
c. DNA; proteins
d. cholesterol; phospholipids

Joanna Quigley
Joanna Quigley
Numerade Educator
00:33

Problem 13

The cytoskeleton of a cell consists of all of the following, except
a. microtubules.
b. actin filaments.
c. extracellular matrix.
d. intermediate filaments.

Joanna Quigley
Joanna Quigley
Numerade Educator
00:59

Problem 14

Cilia and flagella are involved in
a. forming junctions between cells.
b. establishing the extracellular matrix.
c. cell-to-cell communication.
d. cell movement.

Joanna Quigley
Joanna Quigley
Numerade Educator
00:33

Problem 15

The active site of an enzyme
a. is identical to that of any other enzyme.
b. is the part of the enzyme where the substrate can fit.
c. is destroyed during a chemical reaction.
d. is where the coenzyme binds

Rachel Francis
Rachel Francis
Numerade Educator
00:47

Problem 16

Enzymes accelerate a chemical reaction by
a. reducing the amount of substrate produced.
b. lowering the energy of activation of the reaction.
c. increasing the energy of activation of the reaction.
d. reducing the amount of reactant needed.

Joanna Quigley
Joanna Quigley
Numerade Educator
00:59

Problem 17

Which of the following pathways produces the greatest amount of ATP?
a. citric acid cycle
b. glycolosis
c. electron transport chain
d. fermentation

Joanna Quigley
Joanna Quigley
Numerade Educator
00:54

Problem 18

Which of the following reactions is aerobic and recycles $\mathrm{NAD}^{+}$ molecules?
a. glycolosis
b. citric acid cycle
c. electron transport chain
d. fermentation

Joanna Quigley
Joanna Quigley
Numerade Educator