Cells Ch. 2 A: Question Preview (ID: 6208)

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What are the products of photosynthesis?
a) carbon dioxide and water
b) oxygen and water
c) carbon dioxide and sugars
d) oxygen and sugars

What happens during photosynthesis?
a) The cell uses oxygen to make food.
b) The cell uses the energy in sunlight to make food.
c) The cell uses glucose to make oxygen.
d) The cell uses the energy in sunlight to make carbon dioxide.

What happens during respiration?
a) Oxygen is released into the air.
b) Glucose is broken down, releasing energy.
c) Carbohydrates are released into the bloodstream.
d) Water and carbon dioxide are converted into energy.

How are photosynthesis and respiration related?
a) They have opposite equations.
b) They have the same equation.
c) They both produce carbon dioxide.
d) They both produce oxygen.

Together, respiration and photosynthesis keep the levels of carbon dioxide and oxygen in the atmosphere
a) fairly constant
b) constantly changing
c) constantly increasing
d) constantly decreasing

The energy-releasing process that does not require oxygen is called
a) photosynthesis
b) respiration
c) fertilization
d) fermentation

Under which of the following conditions is lactic-acid fermentation most likely to occur?
a) a very fast run
b) a long walk
c) sleeping
d) playing video games

Mitosis is the stage of the cell cycle during which
a) the cell’s nucleus divides into two new nuclei.
b) the cell’s DNA is replicated.
c) the cell divides into two new cells.
d) the cell’s cytoplasm divides.

A DNA molecule is shaped like a
a) long thin rod
b) spiral staircase
c) straight ladder
d) triple helix

Cancer is a disease in which cells
a) grow and divide uncontrollably.
b) die before they can mature.
c) stop producing DNA.
d) die during mitosis.

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