Biology Keystone Final Review

A cell in the leaf of a green plant performs both photosynthesis and cellular respiration, often at the same time. Which statement best describes how these processes are related to each other?

• Both processes produce carbon dioxide.

• Both processes require energy directly from the Sun.

• Products of one process are used as some of the reactants for the other process.

• Thermal energy from one process is used as the energy source for the other process.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which statement best describes how active transport differs from passive transport?

• Only active transport requires ATP.

• Only active transport moves small particles.

• Only active transport relies on a plasma membrane.

• Only active transport allows substances to leave a cell.

What cell structure does all of the following:

• allows waste to exit the cell

• allows chemicals required for cellular respiration to enter the cell

• regulates movement of water into and out of the cell

• lysosome

• mitochondria

• endoplasmic reticulum

• plasma membrane

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NGSS.MS-LS1-2

What is the main source of energy in photosynthesis?

• carbohydrates

• sunlight

• geothermal heat

• electrical heat

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NGSS.MS-LS1-6

A key stone species is..

• a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically. （Ex. Ochre Sea Star, California Mussel)

• species that are native to and found only within a limited area

• a species that has a strong role in structuring a community. A foundation species can occupy any trophic level in a food web (i.e., they can be primary producers, herbivores or predators Ex. kelp).

• Species with a broad ecological niche. They can live in many different places, eat a variety of foods, and tolerate a wide range of environmental conditions. (Ex. flies, human)

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NGSS.MS-LS2-4

What is the correct equation for cellular respiration?

• 6O₂ + C₆H₁₂O₆ -> 6CO₂ + 6H₂O + Energy

• 6O₂ + C₆H₁₂O₆ + Energy -> 6CO₂ + 6H₂O

• 6CO₂ + 6H₂O -> 6O₂ + C₆H₁₂O₆ + Energy

• 6CO₂ + 6H₂O + Energy -> 6O₂ + C₆H₁₂O₆

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NGSS.MS-LS1-7

In which organelle (part of the cell) does photosynthesis take place?

• mitochondria

• chloroplast

• nucleus

• cell membrane

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NGSS.MS-LS1-6

NGSS.MS-LS1-2

In which way are photosynthesis and cellular respiration different?

• Cellular respiration stores ATP, while photosynthesis releases ATP.

• Cellular respiration produces oxygen, while photosynthesis uses oxygen.

• Photosynthesis releases energy, while cellular respiration stores energy.

• Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

A scientist observed that during the course of a chemical reaction the number of ATP molecules was reduced. What did the scientist most likely learn from the observation?

• the reaction produced water

• the reaction consumed water

• the reaction caused an output of energy

• the reaction required an input of energy

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NGSS.HS-LS1-7

Which cell process is best modeled by the diagram?

• osmosis

• exocytosis

• passive transport

• facilitated diffusion