UNIT 3 Photosynthesis

Multiple Choice

Which of the following is NOT a true statement about ATP?

• ATP provides energy for the mechanical functions of cells

• Used ATP is discarded by the cell as waste

• ATP consists of ribose, adenine, and 3 Phosphate groups

• ADP is produced when ATP releases energy

ATP is a nucleotide composed of adenosine, ribose and 3 phosphate groups. ​

ATP has three phosphate groups and is produced by enzymes (ex. ATP synthase) from ADP or adenosine monophosphate and phosphate groups

Mitochondria are the site of most ATP molecules produced during aerobic respiration. ​

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Multiple Choice

Which chemical shown in the figure is an electron carrier molecule?

• NADP+

• Oxygen

• H2O

• CO2

Multiple Choice

Which of the following is likely to result if a shade tolerant plant would receive a minimal amount of water while receiving its necessary amount of light?

• Accelerated plant growth

• Low ATP Production

• Increased output of oxygen

• Increased consumption of CO2

​H20 IS AN INPUT NEEDED TO PRODUCE ATP IN LIGHT DEPENDENT REACTIONS.

Multiple Choice

Plants get the energy they need for photosynthesis by absorbing

• chlorophyll b

• energy from the sun

• high energy sugars

• chlorophyll a

​the sun is the ultimate energy source for living organisms.

Multiple Choice

When a molecule of NAD+ gains a hydrogen atom, the molecule becomes

• reduced

• plasmolyzed

• oxidized

• hydrolyzed

​the molecule is reduced because when a molecule gains an electron, it is reduced. Oxidized would be chosen if molecule lost an electron. Plasmolysis has nothing to do with gain or loss of electron, it is the shrinking of protoplasm away from the cell wall of a plant or bacterium.