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Biology Concepts and Applications

Cecie Starr, Christine A. Evers, Lisa Starr

Chapter 5

Ground Rules of Metabolism - all with Video Answers

Educators

Chapter Questions

00:48

Problem 1

Which of the following statements is not correct?
a. Energy cannot be created or destroyed.
b. Energy cannot change from one form to another.
c. Energy tends to disperse spontaneously
d. Energy can be transferred.

Aditya Sood
Aditya Sood
Numerade Educator
00:50

Problem 2

_________ is life's primary source of energy.
a. Food
b. Water
c. Sunlight
d. ATP

Aditya Sood
Aditya Sood
Numerade Educator
00:46

Problem 3

Entropy ________.
a. tends to disperse
b. is a measure of disorder
c. tends to decrease, overall
d. is free energy

Aditya Sood
Aditya Sood
Numerade Educator
00:57

Problem 4

In an endergonic reaction, activation energy is a bit like ________ .
a. a burst of speed
b. coasting downhill
c. an energy hill
d. putting on the brakes

Aditya Sood
Aditya Sood
Numerade Educator
01:07

Problem 5

_______ are always changed by participating in a reaction.
a. Enzymes
b. Cofactors
c. Reactants
d. Coenzymes

Aditya Sood
Aditya Sood
Numerade Educator
01:03

Problem 6

Name one environmental factor that typically influences enzyme function.

Aditya Sood
Aditya Sood
Numerade Educator
00:57

Problem 7

A metabolic pathway _______ .
a. may build or break down molecules
b. generates heat
c. can include redox reactions
d. all of the above

Aditya Sood
Aditya Sood
Numerade Educator
01:13

Problem 8

Which of the following statements is incorrect?
a. Some metabolic pathways are cyclic.
b. Glucose can diffuse directly through a lipid bilayer.
c. Feedback inhibition regulates some metabolic pathways.
d. All coenzymes are cofactors.
e. Osmosis is a type of diffusion.

Aditya Sood
Aditya Sood
Numerade Educator
00:49

Problem 9

Antioxidants _______ .
a. prevent other molecules from being oxidized
b. are coenzymes
c. balance charge
d. deoxidize free radicals

Aditya Sood
Aditya Sood
Numerade Educator
00:37

Problem 10

A molecule that donates electrons becomes ________, and the one that accepts the electrons becomes ______ .
a. reduced; oxidized
b. ionic; electrified
c. oxidized; reduced
d. electrified; ionic

Aditya Sood
Aditya Sood
Numerade Educator
00:54

Problem 11

Solutes tend to diffuse from a region where they are ________ (more/less) concentrated to an adjacent region where they are ________ (more/less) concentrated.

Aditya Sood
Aditya Sood
Numerade Educator
00:59

Problem 12

________ do not easily diffuse across a lipid bilayer.

Aditya Sood
Aditya Sood
Numerade Educator
00:45

Problem 13

A transport protein requires ATP to pump sodium ions across a membrane. This is a case of ______ .
a. passive transport
b. active transport
c. osmosis
d. facilitated diffusion

Aditya Sood
Aditya Sood
Numerade Educator
01:12

Problem 14

Immerse a human blood cell in a hypotonic solution, and water ________ .
a. diffuses into the cell
b. diffuses out of the cell
c. shows no net movement
d. moves in by endocytosis

Aditya Sood
Aditya Sood
Numerade Educator
00:48

Problem 15

Match each term with its most suitable description.
______reactant
______phagocytosis
______first law of thermodynamics
______product
______cofactor
______concentration gradient
______passive transport
______active transport
______electron transfer chain
______cyclic pathway
______turgor
a. assists enzymes
b. forms at reaction's end
c. energy cannot be created or destroyed
d. cell eats cell
e. enters a reaction
f. requires energy input
g. influences diffusion
h. no energy input required
i. internal pressure
j. goes in circles
k. series of redox reactions

Mishal Gul
Mishal Gul
Numerade Educator