Carbon Cycle Cellular Respiration Review

Carbon is stored in leaves in various forms, such as sugar. When leaves decay, they lose mass. Which of the following sentences explains what happens to the carbon that is stored in leaves when they decay?

• The carbon evaporates.

• The carbon is destroyed as the leaves decompose.

• The carbon is converted into nitrogen by bacteria in the soil.

• The carbon is converted into carbon dioxide and released into the atmosphere.

Tags

NGSS.MS-LS2-3

Which model demonstrates a correct pathway carbon takes in the carbon cycle?

• soil → animals → plants → atmosphere

• plants → soil → animals → atmosphere

• atmosphere → plants → animals → soil

• animals → plants → atmosphere → soil

Tags

NGSS.MS-LS2-3

Most of the carbon in the rocks that form Earth's mantle and crust was stored there when Earth formed. The rest of Earth's carbon is stored in various reservoirs and exchanged in many ways. In a model of the carbon cycle, which process does NOT contribute directly to the storage of carbon within sediment?

• the deposition of organic carbon from decaying organisms

• the deposition of dissolved carbon dioxide from the atmosphere

• the formation of carbon dioxide through metabolism of carbohydrates

• the formation of fossil fuels from terrestrial organisms under high heat and pressure

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

During photosynthesis, molecules inside chloroplasts in plant cells absorb energy from the Sun. Which statement best describes how photosynthesis follows the law of conservation of energy?

• Light energy from the Sun is converted into kinetic energy in plant cells.

• Chemical energy from the Sun is converted into light energy in plant cells.

• Light energy from the Sun is converted into chemical energy in plant cells.

• Chemical energy from the Sun is converted into thermal energy in plant cells.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following statements is most accurate?

• A finite amount of carbon exists on Earth, and it moves through living and nonliving materials through the carbon cycle.

• The amount of carbon on Earth cycles, gradually increasing as it moves up the food chain, and decreasing until the next phase of the cycle.

• Carbon flows through the food chain as animals eat it, then decomposes and is permanently removed from the system when the food chain is complete.

• Carbon enters Earth's atmosphere when animals exhale, then moves into space where its amount steadily increases, and finally moves back into Earth's atmosphere to be used again.

Tags

NGSS.MS-LS2-3

Which statement best describes how photosynthesis follows the law of conservation of mass?

• The volume of water used by this process is equal to the volume of water released from plant leaves at night.

• The cells in plants absorb the same amount of energy from the Sun that humans need when burning sugars during digestion.

• The number of oxygen atoms in the reactants used by this process equals the total number of oxygen atoms in the products.

• The amount of carbon dioxide gas absorbed by one plant is equal to the amount of carbon dioxide gas exhaled from one human.

Tags

NGSS.MS-PS1-5

Which of the following statements best describes the process of photosynthesis?

• Carbon dioxide and water combine to form glucose and oxygen.

• Carbon dioxide and glucose combine to produce energy and water.

• Carbon dioxide, glucose, and water are released to produce energy.

• Carbon dioxide and water are released when glucose and oxygen combine

Tags

NGSS.MS-LS1-6

The rate of photosynthesis can be determined by measuring the rate that reactants are used up by a plant or by measuring the rate that products of photosynthesis are produced by a plant. How would placing a plant in a dark room for 24 hours affect the rate of photosynthesis?

• The rate of photosynthesis would increase and the plant would take in more water.

• The rate of photosynthesis would decrease and the plant would produce more sugar

• The rate of photosynthesis would increase and the plant would produce more oxygen.

• The rate of photosynthesis would decrease and the plant would take in less carbon dioxide.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

One living plant leaf, still attached to the plant, is placed into a cup containing water. A lamp is placed above the cup so that the leaf receives light. After several moments, bubbles appear at the surface of the plant leaf. Which statement best explains what causes the bubbles to appear?

• Photosynthesis is occurring and bubbles of air are entering the water from the area around the plant.

• Photosynthesis is occurring and bubbles of oxygen gas are being released into the surrounding area.

• Photosynthesis is occurring and bubbles of oxygen gas are being absorbed into the plant leaf from the water.

• Photosynthesis is occurring and bubbles of carbon dioxide gas are being released by the leaf into the surrounding area.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which statement about cellular respiration is true?

• Oxygen is a waste product of cellular respiration in both plants and animals.

• Oxygen is a waste product of cellular respiration in plants, but not in animals.

• Carbon dioxide is a waste product of cellular respiration in both plants and animals.

• Carbon dioxide is a waste product of cellular respiration in plants, but not in animals.

Tags

NGSS.MS-LS2-3