AnswersAA-F26 Physical ScienceLab: Acids and Bases

Photosynthesis and Cellular Respiration Answers

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1
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Energy is converted from solar to chemical in Process A and then from one form of chemical to another in Process B. Which is described by Process A?

A
energy conservation
B
photosynthesis
C
cellular respiration
D
Krebs cycle
2
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Which statement is true for photosynthesis?

A
Producers use it.
B
Consumers use it.
C
Scavengers use it.
D
Decomposers use it.
3

Which best describes the nature of cellular respiration?

A
It is an energy-seeking process.
B
It is an energy-gathering process.
C
It is an energy-releasing process.
D
It is an energy-destroying process.
4

The Calvin cycle and the Krebs cycle are referred to as cycles of chemical reactions because they

A
occur inside organelles.
B
start over continually.
C
are part of the carbon cycle.
D
allow energy to flow in ecosystems.
5

Which statement is true for both photosynthesis and cellular respiration?

A
It occurs in consumers.
B
It occurs in producers.
C
It produces carbon dioxide.
D
It produces oxygen.
6

Which molecule is best described as energy rich because of the amount of energy that can be stored in it and released from it?

A
CO2
B
ADP
C
H2O
D
C6H12O6
7

The chemical equation below summarizes the process of photosynthesis.6CO2 + 6H2O + energy à 6O2 + C6H12O6Which is the main source of energy that is shown in the equation?

A
soil
B
sun
C
ATP
D
glucose
8

Which is true for both photosynthesis and cellular respiration?

A
They require oxygen as a reactant.
B
They require organelles.
C
They require light energy from the Sun.
D
They require cells to use water.
9

An important similarity between photosynthesis and cellular respiration is that both processes

A
use and store O2.
B
use and make ATP.
C
store energy in glucose.
D
release energy from glucose.
10

Which best summarizes the flow of energy in a producer?

A
Sun à ADP à muscle cells
B
Sun à mitochondria à C6H12O6
C
Sun à chloroplasts à mitochondria
D
Sun à mitochondria à chloroplasts
11

Hon placed aquatic plants in several test tubes that were filled with water. Then, he placed half of the test tubes in a dark closet and the other half in a well-lit room. When he recorded his data, some of the plants had formed many small bubbles on the leaves, and some did not. Which describes what Hon most likely observed and the reason for these results?

A
The plants in the dark formed bubbles because they released hydrogen gas.
B
The plants in the dark formed bubbles because they released water vapor.
C
The plants in the light formed bubbles because they released carbon dioxide gas.
D
The plants in the light formed bubbles because they released oxygen gas.
12

The chemical equation below summarizes cellular respiration.6O2 + C6H12O6 à 6CO2 + 6H2O + energyThe energy that is released by cellular respiration is in the form of

A
dark energy.
B
solar energy.
C
nuclear energy.
D
chemical energy.
13

The table below shows data collected in an experiment about gases in inhaled and exhaled air.Percentages of Chemicals in Air O2CO2Inhaled20.94%0.03%Exhaled16.37%4.46%Suppose a similar experiment was set up to measure changes in air composition immediately before and two days after twenty potted plants were placed in a clear, sealed aquarium near a window. Percentages of Chemicals in Air O2CO2Before 20.94%0.03%After ??How would the second row of values in the plant experiment most likely compare to the second row of values in the original experiment?

A
Oxygen levels would be higher, but carbon dioxide levels would be lower.
B
Carbon dioxide levels would be higher, but oxygen levels would be lower.
C
Oxygen levels would be higher, but carbon dioxide levels would be the same.
D
Carbon dioxide levels would be higher, but oxygen levels would be the same.
14

Which is the relationship between photosynthesis and cellular respiration?

A
Cellular respiration makes the glucose that is needed by photosynthesis.
B
Photosynthesis makes the glucose that is broken down by cellular respiration.
C
Cellular respiration converts the glucose that is made by photosynthesis to oxygen.
D
Photosynthesis converts the glucose that is made by cellular respiration to carbon dioxide.
15

Consider the diagram below, which represents components of the biosphere.What do the two arrows in the diagram most likely represent?

Question illustration
A
radiation
B
photosynthesis
C
cellular respiration
D
energy transfers

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