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Worksheets2.4 cellular respiration
Total questions: 27
Worksheet time: 14mins
Which of the following statements is NOT TRUE concerning photosynthetic plants?
They get carbon from the environment.
They obtain energy from the environment.
They make their own food.
They provide food for others.
They do not need gases to make food.
Plants are considered to be:
heterotrophs.
chemotrophs.
carbotrophs.
autotrophs.
a combination of all of these.
Chlorophyll does not absorb which color of light?
red
yellow
orange
green
blue
Which of the following are accessory pigments in photosynthesis?
carotenoids
Chlorophyll a
anthocyanins
chlorophyll b
all of these
During the light reaction, where do the electrons in photosystem II come from?
photo-hydrolysis of water (H2O)
phosphorylation of ATP
Hydrolysis of ATP
NAD+
any of these, depending on the type of pigment.
Which of the following statements is NOT TRUE concerning an electron that has absorbed a photon in photosystem II?
It moves up the photosystem.
It becomes more stable.
It can be re-excited in photosystem I.
It may emit energy.
It becomes excited.
Which of the following choices is NOT TRUE?
Carotenoids use green and red light to assist in photosynthesis.
Photosystems contain pigments that capture certain energy from light by becoming "excited."
Chlorophylls reflect green and yellow light, but absorb most blue, violet, and red light.
Carotenoids absorb blue and violet wavelengths and reflect red, orange, and yellow.
The first step in photosynthesis involved photosystem II, not photosystem I.
Which of the following is not produced in the light-dependent reactions?
glucose.
oxygen.
ATP.
NADPH.
all of these are produced.
Which of the following statements is TRUE about NADPH?
It is an enzyme.
It is the oxidized form of NADP+.
It is generated in the light-dependent reactions of photosynthesis.
It accepts hydrogen and electrons from glucose.
It obtains energy from ATP.
Where are sugars formed in the chloroplasts?
on the outer membrane
on the inner membrane
in the thylakoid compartment
in the stroma
within the thylakoid membrane
Actual assembly of sugars during photosynthesis
occurs during light-independent reactions.
takes place in the stroma.
requires NADPH.
requires ATP.
does all of these.
Which of the following is the main product of the light-independent reaction (Calvin Cycle)?
ADP
NADP+
oxygen
glucose
none of these are products
The oxygen released in photosynthesis comes from
carbon dioxide.
glucose.
ribulose bisphosphate.
water.
atmospheric oxygen.
The two photosystems of light reactions are designated
type 1 and type 2.
type I and type II.
photosystem A and photosystem B.
photosystem 680 and photosystem 700.
photosystem I and photosystem II.
Which of the following statements describes an electron transfer chain?
It generates energy from carbohydrates.
Cells use it to dispose of excess electrons.
It utilizes ATP to synthesize nutrients.
It transfers energy as e- across a membrane, and produces ATP.
It requires activation by oxygen.
A high concentration of H+ in the thylakoid compartment provides potential energy for the ____ by____.
breakdown of water; oxidation
production of ATP; ATP synthase
reduction of NADP+; an electron transfer chain
production of sugars; the light-independent reactions
production of O2; photolysis
The electrons for photosynthesis come from:
ATP.
glucose.
NADP+.
chlorophyll a.
H2O.
Plant cells release hydrogen ions and oxygen from H2O molecules in
photosystem I.
photosystem II.
cyclic photophosphorylation.
the light independent reaction.
carbon fixation.
Which of the following is NOT TRUE of photo-hydrolysis (water being broken down for photosynthesis)?
It is a function of the Calvin Cycle.
It involves photosystem II.
It is the source of electrons (e-).
It is the source of oxygen (O2) in photosynthesis.
It is the source of hydrogen ions (H+) in photosynthesis.
All of the products of the light-dependent reactions of photosynthesis listed below are used in the light-independent reactions EXCEPT for
O2.
electrons.
NADPH.
ATP.
The proteins associated with the light-dependent reactions of photosynthesis are located
on the outer membranes of the chloroplast.
in the stroma.
on the thylakoid membrane.
throughout the cytoplasm of plant cells.
in the thylakoid compartment.
The light reaction produces all of the following EXCEPT ______________________
a concentration gradient of H+
excited electrons
ATP
CO2
NADPH
Which of the following is NOT produced in the light-independent (Calvin cycle) reactions?
NADPH
phosphoglyceric acid (3PG)
phosphoglyceraldehyde (G3P)
glucose
ribulose bisphosphate (RuBP)
The light-independent reaction (Calvin Cycle) begins and ends with a 5 carbon compound named ______________________
phosphoglycerate (3PG)
ribulose bisphosphate (RuBP)
phosphoglyceraldehyde (G3P)
O2
NADP+
Which of the following chemicals has five carbon atoms?
phosphoglycerate (PGA)
ribulose bisphosphate (RuBP)
phosphoglyceraldehyde (PGAL)
glucose
none of these
The light-independent (Calvin Cycle) reactions of photosynthesis
fix carbon dioxide.
release oxygen.
cannot occur in light.
generate ATP.
do all of these.
Which of the following has the most energy?
phosphoglycerate (PGA)
ribulose bisphosphate (RuBP)
phosphoglyceraldehyde (PGAL)
glucose
rubisco
