Lesson 6, Test 1 Part 2
1 of 50
Which of the following is a measure of disorder?
Conservation of energy
2 of 50
Glucose molecules provide energy to power the swimming motion of sperm. In this example, what type of energy transformation is taking place?
kinetic energy is transformed into potential energy
chemical energy is transformed into potential energy
kinetic energy is transformed into chemical energy
chemical energy is transformed into kinetic energy
none of the above
3 of 50
Which of the following directly provides energy for cellular work?
4 of 50
Energy is transferred from ATP to other molecules by transferring which of the following?
5 of 50
What is the name for specialized proteins that cause metabolic reactions to proceed at a faster rate than they normally would occur?
6 of 50
What does an enzyme's function depend on?
7 of 50
What is the name for the region of an enzyme to which a substrate binds?
8 of 50
What is the name for substances that plug up an enzyme's active site?
induced fit factors
9 of 50
Diffusion is an example of which of the following?
10 of 50
Which of the following is the best description of osmosis?
Active transport of substances against a concentration gradient.
The diffusion of nonpolar molecules.
The diffusion of a solute.
The movement of water across a selectively permeable membrane.
11 of 50
Which of the following statements describes the movement of water as a result of osmosis?
Movement to the side with lower water concentration.
Movement to the side with lower solute concentration.
No movement across the cell membrane.
Equal movement in both directions across the membrane.
Movement to the side with higher water concentration.
12 of 50
Which of the following statements is true about diffusion?
It is a process that only occurs at the cellular level.
It occurs when particles spread from an area of lesser concentration to an area of higher concentration.
It requires an input of energy.
It proceeds until equilibrium is reached.
It is the result of potential energy from atoms.
13 of 50
Which of the following will occur to a plant cell if it is placed in a hypotonic solution?
it will pump out excess water
it will undergo plasmolysis
it will swell (become turgid)
it will shrink
it will burst
14 of 50
Which of the following processes results in the net movement of a substance into a cell when, the substance is more concentrated INSIDE the cell than OUTSIDE the cell?
15 of 50
Which of the following statements is TRUE about active transport?
Solutes are moved against their concentration gradient.
It can involve the transport of ions.
The cell must expend energy.
ATP is used as an energy source.
all of the above
16 of 50
What is the process called when a white blood cell engulf a bacterium?
17 of 50
Which of the following is the correct equation for photosynthesis?
6 CO2 + 6 H2O ® C6H12O6 + 6 O2
6 O2 + 6 H2O ® C6H12O6 + 6 CO2
6 CO2 + 6 O2 ® C6H12O6 + 6 H2O
6 CO2 + 6 H2O + 6 O2 ® C6H12O6
C6H12O6 + 6 O2 ® 6 CO2 + 6 H2O
18 of 50
The products of photosynthesis serve as the reactants for which of the following processes?
19 of 50
Which of the following absorbs light during photosynthesis?
rough endoplasmic reticulum
20 of 50
Through what structure(s) do plants obtain most of their water?
21 of 50
What name is given to the membranous sacs found within a chloroplast?
22 of 50
Which of the following converts light energy into chemical energy (sugars) through the process of photosynthesis?
23 of 50
The light reactions of photosynthesis convert ______ energy to ______ energy.
proton gradient; chemical
24 of 50
What is the role of NADP+ in photosynthesis?
It is an electron carrier.
It captures sunlight.
It fixes water.
It splits water.
It reflects sunlight.
25 of 50
What is the function of the Calvin cycle?
To oxidize glucose.
To make sugar
To capture sunlight.
To produce carbon dioxide (COTo produce carbon dioxide (CO2)
To split water.
26 of 50
Which of the following is an end product of photosynthesis?
Carbon dioxide (CO2)
27 of 50
Which of the following is a true statement regarding a green leaf?
The leaf is green because the pigments are excited.
The leaf is green because the pigments absorb wavelengths of light in the green spectrum.
The leaf is green because the green wavelengths have been used and discarded by the pigmented object.
The leaf is green because they have interacted with sunlight.
The leaf is green because the pigments reflect wavelengths of light in the green spectrum.
28 of 50
If a plant appears blue, what wavelength of light is being reflected?
29 of 50
What name is given to a fixed quantity of light energy?
30 of 50
What is one reason why plants have accessory pigment molecules, like chlorophyll b and carotenoids?
To absorb energy in the electromagnetic spectrum that chlorophyll a cannot
chlorophyll a gets burnt out by intense summer sunlight
plants cannot make enough chlorophyll a
To reflect more energy
To give them different colors
31 of 50
What compound is found at the reaction center of a photosystem?
32 of 50
Which of the following is true about chlorophyll b?
It transfers light energy to chlorophyll a.
absorbs green light.
It reverses the affects of chlorophyll a.
participates directly in the light reactions.
All of the above.
33 of 50
When a molecule absorbs a photon, one of its electrons is raised to which state?
34 of 50
Which of the following is found in both cellular respiration and in the light reactions of photosynthesis?
electron transport chain
citric acid cycle
35 of 50
What are the end products of cellular respiration?
water H2O only
carbon dioxide (CO2) only
water (H2O) and glucose (C6H12O6)
glucose (C6H12O6) only
water (H2O) and carbon dioxide (CO2)
36 of 50
Which of these equations describes aerobic cellular respiration?
Glucose + lactose ®galactose + water
Energy + carbon dioxide + water ® glucose + oxygen + water
Glucose ® lactic acid + energy
Glucose + oxygen ® carbon dioxide + water + energy
Glucose ® ethyl alcohol + carbon dioxide + energy
37 of 50
Which of the following is required in an aerobic process?
38 of 50
Which of the following energy pathways is found in every living organism?
citric acid cycle
lactic acid fermentation
39 of 50
Which of the following is the main metabolic pathway in animals?
lactic acid fermentation
40 of 50
Which of the following is the correct sequence of stages in cellular respiration?
Citric acid cycle, electron transport, glycolysis
Citric acid cycle, glycolysis, electron transport
Glycolysis, citric acid cycle, electron transport
Electron transport, citric acid cycle, glycolysis
Electron transport, glycolysis, citric acid cycle
41 of 50
One molecule of glucose is broken into two molecules of which of the following?
42 of 50
ATP is produced during
the electron transport chain.
citric acid cycle
A and B above.
A, B, and C above.
43 of 50
Which stage of cellular respiration yields the greatest number of ATP molecules?
the number is equal for all three stages
citric acid cycle
44 of 50
What occurs in redox reactions?
enzymes catalyze reactions
materials move through the plasma membrane
electrons are lost from one substance and added to another substance
45 of 50
Where in the cell do the citric acid cycle and electron transport take place?
46 of 50
Aerobic cellular respiration generates how many molecules of ______ ATP from one molecule of glucose?
47 of 50
The term anaerobic means ______.
48 of 50
How many molecules of ATP are produced from 1 molecule of glucose during anaerobic respiration?
49 of 50
Which of the following processes occurs under anaerobic conditions?
The electron transport chain
the citric acid cycle
the Krebs cycle
Conversion of pyruvic acid to acetyl CoA
50 of 50
What product does yeast produce under anaerobic conditions?