2.2.9 Photosynthesis FMQuiz Homework Solution
Q. Explain the part played by NADP- in
photosynthesis.
A. Trapping and transferring electrons and
hydrogen ions
Q. What happens to water molecules when they
reach the sites of photosynthesis?
A. Photolysis or split into Protons (H+), electrons &
oxygen
Q. Give a brief explanation of the division of
photosynthesis into light and dark stages.
A. Light stage – light essential; Dark stage –
independent of light
Q. State a precise role for carbon dioxide
photosynthesis:
A. Supplies the carbon for the formation of C6H12O6
Q. What is the fate of the NADPH produced in the
light-dependent stage?
A. To carry H into the dark stage for the reduction
of CO2
Q. In which of the stages of photosynthesis does
ATP form?
A. Light stage
Q. What is the role of ATP in cells?
A. Stores or provides energy or described
Q. Where in a plant cell does photosynthesis take
place?
A. Chloroplast
Q. What is an energised electron?
A. Electron which has picked up extra energy from
the sun
Q. In which stage of photosynthesis does carbon
dioxide provide carbon for carbohydrate
formation?
A. Dark stage
Q. Suggest a role for NAD / NADP+ in cell activities.
A. Capturing or transferring electrons or protons or
hydrogen (ions)
Q. During the first stage of photosynthesis where
do the energised electrons come from?
A. Chlorophyll
Q. ATP is an abbreviation. What does it stand for?
A. Adenosine triphosphate
Q. What is the fate of the oxygen produced in the
light-dependent stage?
A. Respired or released into atmosphere
Q. Explain briefly the role of ATP in the energy
exchanges of a cell.
A. P ~ P bond holds or stores energy and releases it
when needed
Q. During photosynthesis compounds of the
general formula Cx(H2O)y are formed. What name is
given to this group of compounds?
A. Carbohydrates
Q. What is the fate of the ATP produced in the
light-dependent stage?
A. To supply energy for the reduction of CO2 in dark
stage
Q. From which simple compound does the plant
obtain the H used to make C6H12O6?
A. Water
Q. Why is the dark stage given the alternative
name of the light-independent stage?
A. Light not required
Q. Name the simple compound that supplies the
necessary energy for the second stage reactions.
A. ATP
Q. Name a gas that is essential for the dark stage.
A. Carbon dioxide
Q. Give the name of the second stage of
photosynthesis.
A. Dark stage
Q. To what group of biomolecules do the main
products of the dark stage belong?
A. Monosaccharides or polysaccharides or
carbohydrates
Q. Where in the cell is chlorophyll found?
A. Chloroplast(s)
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