AnswersMI-Biology A-CRLab: Diffusion Across a Semi-permeable Membrane

The Process of Photosynthesis Answers

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Consider the formula for glucose: C6H12O6. In the processes of photosynthesis, what supplies the hydrogen (H) used in the formation of glucose?

A
light energy
B
carbon dioxide
C
chlorophyll
D
water
2
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Navah writes out the chemical equation for photosynthesis. She includes two reacting molecules to the left of the arrow and two resulting molecules to the right.What must be added to the chemical equation to more accurately represent photosynthesis?

A
light energy, above the arrow
B
chlorophyll, to the left of the arrow
C
enzymes, to the left of the arrow
D
ATP, above the arrow
3

Johannes wants to know whether soil, water, or both are needed for plant growth. He chooses to conduct experiments on a willow tree for five years to answer his question. How can his experimental methods be changed to improve his experiment?

A
He needs to ask scientists what they think.
B
He needs to conduct the experiment for a longer period.
C
He needs to use a larger sample size.
D
He needs to test more factors in the environment.
4

Which is the main light-absorbing pigment for photosynthesis?

A
carotene
B
chlorophyll
C
hemoglobin
D
anthocyanin
5

In which situation would it be least likely for a scientist to revise her experimental methods?

A
if her results support her hypothesis
B
if her data do not support her hypothesis
C
if no conclusions can be drawn from the data
D
if results are the same after repeating the procedure
6

Which statement summarizes a change that occurs during photosynthesis?

A
It converts visible light to high-energy gamma rays.
B
It converts carbon to oxygen.
C
It converts light energy to chemical energy.
D
It converts energy to mass.
7

Photosynthesis is important to living organisms because it is

A
the foundation of most food chains.
B
the source of nitrogen gas in the air.
C
how animals get carbon dioxide to breathe.
D
the process that occurs in most ecosystems.
8

What component of Earth’s atmosphere exists entirely as a result of photosynthesis?

A
oxygen gas
B
water vapor
C
nitrogen gas
D
carbon dioxide gas
9

Which statement best describes what a thylakoid does during photosynthesis?

A
surrounds the grana and keeps them moist
B
enables the light-dependent reactions to occur
C
combines carbon dioxide and water to make sugar
D
helps the light-independent reactions to occur
10

Miles wants to write the equation for photosynthesis. The diagram below represents one of the molecules in the equation.Which chemical formula reflects the diagram?

Question illustration
A
6O12H6C
B
6C12H6O
C
O6H12C6
D
C6H12O6

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