6- Cell Processes & Energy

What are the products of photosynthesis?

• carbon dioxide and water

• oxygen and water

• carbon dioxide and sugars

• oxygen and sugars

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What happens during photosynthesis?

• The cell uses oxygen to make food

• The cell uses the energy in sunlight to make food

• The cell uses glucose to make oxygen

• The cell uses the energy in sunlight to make carbon dioxide

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How does photosynthesis benefit heterotrophs?

• It adds carbon dioxide to the air

• It creates food that they can eat

• It eliminates harmful sugars

• It creates clean water

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The stage of respiration that releases most of the energy in glucose occurs in the

(Where does respiration happen?)

• nucleus

• chloroplast

• cytoplasm

• mitochondria

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The energy-releasing process that does not require oxygen is called

• photosynthesis

• respiration

• fertilization

• fermentation

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Under which of the following conditions is lactic-acid fermentation most likely to occur?

• a very fast run

• a long walk

• sleeping

• playing video games

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Mitosis is the stage of the cell cycle during which

• the cell's nucleus divides into two new nuclei

• the cell's DNA is replicated

• the cell divides into two new cells

• the cell's cytoplasm divides

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What happens during cytokinesis in animal cells?

• A new round of mitosis begins

• Two new daughter cells are formed

• Each organelle divides into two parts

• A cell plate forms in the middle of the cell

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A DNA molecule is shaped like a

• long, thin rod

• spiral staircase

• straight ladder

• triple helix

During DNA replication, adenine (A) always pairs with

• guanine (G)

• cytosine (C)

• thymine (T)

• adenine (A)