Mississippi Biology State Test Review

Plant cells are able to produce their own food. This process happens in which structure?

• cell wall

• chloroplast

• mitochondrion

• vacuole

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Which statement best explains how sweating during exercise maintains homeostasis?

• It regulates mineral concentrations in cells.

• It regulates body temperature.

• It maintains water balance.

• It maintains sugar balance in cells.

Which statement best explains why animals are considered heterotrophic?

• They are able to produce food through the process of photosynthesis.

• They are able to produce food through the process of respiration.

• They are able to obtain nutrients by decomposing plant and animal tissue.

• They are able to obtain nutrients by consuming other organisms or their products.

Which word equation best represents the process of cellular respiration?

• carbon dioxide + glucose --> oxygen + water

• carbon dioxide + water --> glucose + oxygen

• glucose + oxygen ---> carbon dioxide + water

• oxygen + water ---> carbon dioxide + glucose

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Which best explains why the rate of a biochemical reaction decreases at high temperatures?

• The activation energy increases.

• The shape of the enzyme changes.

• The enzyme-substrate complex forms.

• The bonds between substrates are broken.

A contractile vacuole helps protists eliminate excess liquid. This is a "pumping" process which reduces pressure inside the cell and prevents the cell from bursting. What is most likely the source of energy for this process?

• DNA

• lipids

• ATP

• ribosomes

Which molecules are joined together to make proteins?

• fatty acids

• nucleic acids

• amino acids

• acetic acids

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Leaves are part of a plant’s shoot system. The xylem tissue in leaves transports —

• the bacteria needed for nitrogen fixation in root nodules

• the wax required to coat the surface of actively growing tissue

•  the water and minerals that are absorbed by the roots

• the oxygen that regulates the rate of carbohydrate production

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Enzymes are proteins that help increase the rate of chemical reactions inside cells. These proteins are composed of many simpler molecules called amino acids. Which of the following suggests that the shape of an enzyme determines the enzyme’s function?

• Enzymes are specific to a substrate

•  Enzymes can operate in a wide range of conditions.

• Enzymes are activated by neighboring molecules.

• Enzymes can be found in all life-forms.

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What organelle do plants have surrounding their cells that animals lack?

• Cell Wall

• Woody Stems

• Cell Membrane

• Sharp Thorns

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