NEW
Font size
S
M
L
XL
WorksheetsOpenStax Biology: Chapter 06 Quiz
Total questions: 10
Worksheet time: 6mins
Name
Class
Date
1.
Which of the following is the best way to judge the relative activation energies between two given chemical reactions?
a)
Compare the ΔG values between the two reactions
b)
Compare their reaction rates
c)
Compare their ideal environmental conditions
d)
Compare the spontaneity between the two reactions 11.32% 539 users answered this question before you. 47% correct 47% Correct 49% Incorrect 3% Don't Know
2.
Which of the following molecules is likely to have the most potential energy?
a)
sucrose
b)
ATP
c)
glucose
d)
ADP
3.
Label each of the following systems as high or low entropy: i. the instant that a perfume bottle is sprayed compared with 30 seconds later when it has settled, ii. an old 1950s car compared with a brand new computerized car with more parts, and iii. a living cell compared with a dead cell.
a)
i. low, ii. high, iii. Low
b)
i. low, ii. high, iii. High
c)
i. high, ii. low, iii. High
d)
i. high, ii. low, iii. Low
4.
Which of the following is not true about enzymes:
a)
They increase activation energy of reactions
b)
They are usually made of amino acids
c)
They lower the activation energy of chemical reactions
d)
Each one is specific to the particular substrate(s) to which it binds
5.
The energy released by the hydrolysis of ATP is
a)
primarily stored between the alpha and beta phosphates
b)
equal to −57 kcal/mol
c)
harnessed as heat energy by the cell to perform work
d)
providing energy to coupled reactions
6.
DNA replication involves unwinding two strands of parent DNA, copying each strand to synthesize complementary strands, and releasing the parent and daughter DNA so now there are two copies of the original strand. Which of the following accurately describes this process?
a)
This is an anabolic process
b)
This is a catabolic process
c)
This is both anabolic and catabolic
d)
This is a metabolic process but is neither anabolic nor catabolic
7.
Which of the following comparisons or contrasts between endergonic and exergonic reactions is false?
a)
Endergonic reactions have a positive ΔG and exergonic reactions have a negative ΔG
b)
Endergonic reactions consume energy and exergonic reactions release energy
c)
Both endergonic and exergonic reactions require a small amount of energy to overcome an activation barrier
d)
Endergonic reactions take place slowly and exergonic reactions take place quickly
8.
Energy is stored long-term in the bonds of _____ and used short-term to perform work from a(n) _____ molecule.
a)
ATP : glucose
b)
an anabolic molecule : catabolic molecule
c)
glucose : ATP
d)
a catabolic molecule : anabolic molecule
9.
Which statement is true according to the image?
a)
A: endergonic; B: exergonic
b)
A: exothermic; B: endothermic
c)
A: exergonic; B: endergonic
d)
A: endothermic; B: exothermic
10.
Which statement is true according to the image?
a)
The red curve shows the same reaction as the black curve when catalyzed by an enzyme
b)
The black curve shows the same reaction as the red curve when catalyzed by an enzyme
c)
More activation energy is required in the reaction represented by the red curve
d)
The two curves above are not related
Reset
