Cell Processes and Energy

What are the products of photosynthesis?

• a. carbon dioxide and water

• b. oxygen and water

• c. carbon dioxide and sugars

• d. oxygen and sugars

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.

What happens during respiration?

• oxygen is released into the air

• Glucose is broken down, releasing energy.

• Carbohydrates are released in the bloodstream.

• Water and carbon dioxide are converted into energy.

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.

Carbon dioxide enters plants through the

• pigments

• chloroplasts

• chlorophyll

• stomata

During what stage of the cell cycle does replication occur?

• interphase

• cytokinesis

• prophase

• mitosis

The regular cycle of growth and division that cells undergo is called

• replication

• the cell cycle

• interphase

• mitosis

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

What forms around the chromatids during mitosis?

• two new chromosomes

• two new nuclei

• two new cells

• two new DNA molecules

What is copied during replication?

• the cell's organelles

• chromosomes

• the cell's DNA

• two daughter cells