AnswersHSBIO Biology Sem 1 26-27Lab: Diffusion Across a Semi-permeable Membrane

Light Dependent Reactions in Photosynthesis Answers

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1
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Which is considered a scientific observation?

A
Akon explained that cells need energy which is why animals eat food.
B
Jacinta correlated that high sweat levels were due to a high heart rate.
C
Mahir noticed the plants he watered grew taller than those with less water.
D
Kai decided plants are green because of the chlorophyll used to make food.
2
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Which event occurs in photosystem I?

A
Water molecules are broken apart.
B
Light energy excites electrons.
C
Oxygen is released as waste.
D
Electrons are transferred to ferredoxin.
3

Which is the best description of photophosphorylation?

A
the absorption of light energy by chlorophyll
B
the conversion of light energy to chemical energy
C
the removal of a phosphate group from a molecule
D
the conversion of ADP to ATP using light energy
4

Along with plants and algae, in which organisms can photosynthesis occur?

A
some bacteria
B
all fungi
C
some animals
D
all protists
5

Which best describes how the photosystems are used in the light-dependent reactions?

A
photosystem I is used first then photosystem II
B
photosystem II is used first then photosystem I
C
Both processes are used at the same time.
D
Both processes are used during the light-independent reactions.
6

What is the source of energy that drives photosynthesis?

A
sunlight
B
hydrogen ions
C
electrons
D
oxygen
10

Which series lists the structural components of the light-dependent reactions in order, from smallest to largest?

A
chlorophyll ® thylakoid ® photosystem I ® photosystem II
B
chloroplast ® photosystem II ® photosystem I ® thylakoid
C
chlorophyll ® thylakoid ® chloroplast
D
chloroplast ® chlorophyll® thylakoid

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