Molecular Biology Review - Part 1 (8.L.5.1)

How would the absence of sunlight affect a plant's ability to grow?

• The plant could not absorb nutrients from soil.

• The plant could not absorb water from the soil.

• The plant could not produce carbon dioxide and oxygen.

• The plant could not produce food through photosynthesis.

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Which best describes how organisms obtain energy from food?

• Food reacts with water to release energy.

• Food reacts with oxygen to release energy.

• Food reacts with sunlight to release energy.

• Food reacts with carbon dioxide to release energy.

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Which best describes the process of photosynthesis?

• Carbon dioxide and oxygen are converted into glucose and water

• Carbon dioxide and water are converted into glucose and oxygen

• Oxygen and glucose are converted into carbon dioxide and water

• Oxygen and water are converted into carbon dioxide and glucose

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Which best describes how organisms process materials to gain energy for life processes?

• Oxygen is broken down in a chemical reaction with sugars to release energy.

• Sugars are broken down in a chemical reaction with oxygen to release energy.

• Vitamins and minerals are used to build complex molecules that store energy.

• Vitamins and minerals are used to break down complex molecules that store energy.

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Which best describes respiration?

• a cell process that releases energy from food

• a cell process that converts carbon dioxide into energy

• a plant process where sunlight is converted into energy

• a plant process where chlorophyll produces sugar energy

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Which most accurately describes how plants and animals obtain the energy they need for growth and survival?

• Molecules are broken down during respiration to release stored energy.

• Molecules are broken down during photosynthesis to release stored energy.

• Animals produce energy through photosynthesis, while plants produce energy through respiration.

• Animals produce energy through respiration, while plants produce energy through photosynthesis.

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In cellular respiration, approximately 38% of the energy contained in glucose is released for an organism to use carrying out life processes. Which best explains what happens to the remaining 62% of the energy contained in glucose?

• The energy is used to start the process of cellular respiration when more glucose is consumed by the organism.

• The energy is used to convert leftover glucose into protein to be stored by the cells of the organism.

• The energy is stored by the cells and released later when needed by the organim.

• The energy is converted to thermal energy, which provides heat to the organism.

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How do cells obtain the energy and materials necessary for the work they do?

• They release nitrogen.

• They take in nutrients.

• They move around in the body.

• They produce oxygen and carbon dioxide.

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Which is the most associated with the building and repair of cells, organelles, and tissues?

• fiber

• lipid

• sugar

• protein

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Which molecule created by plants is broken down by the human body to provide energy for its life processes?

• water

• oxygen

• glucose

• carbon dioxide

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