Unit 2 Biology Midterm Review

The diagram illustrates the activity of vesicles during a cellular process.

Which statement best explains the function of the vesicles?

• Delivering packaged materials to the Golgi apparatus for protein synthesis

• Exchanging genetic information between the Golgi apparatuses of separate cells

• Extracting portions of the Golgi apparatus to be regenerated for growth within the cell

• Transporting packaged molecules from the Golgi apparatus to be released out of the cell

Which molecule synthesized by plants is a major source of energy for cellular processes in

both plants and animals?

• Wax

• Nucleic acid

• Glucose

• Chlorophyll

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Some components of cells are listed.

Which of the components could be observed using a microscope in a prepared slide of leaf

epidermal cells but not in a prepared slide of human cheek cells?

• Components 2 and 3 only

• Components 3 and 4 only

• Components 1, 2, 3 and 4 only

• A. Components 1 and 5 only

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Complete the following analogy. Photosynthesis is to chloroplasts as cellular respiration

is to ________.

• Cytoplasm

• Mitochondria

• Chloroplasts

• Nucleus

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Which of these best explains why a freshwater aquarium would be a dangerous habitat for a

saltwater fish?

• The cells of the saltwater fish would gain too much water

• The organs of the saltwater fish would produce too much protein.

• The tissues of the saltwater fish would absorb too much salt.

• The organ systems of the saltwater fish would consume too much energy

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Which is the most likely function of a group of cells that contains a high number of

chloroplasts?

• Photosynthesis

• Fermentation

• Respiration

• Transpiration

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A student groups different types of cells as shown.

• 
• 
• 
• 

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A person with painful, swollen gums rinses his mouth with warm salt water and the swelling

decreases. Which of the following statements best explains what has occurred?

• The salt in the solution has moved against the concentration gradient.

• The saltwater solution lowers the temperature of the water in the gums.

• The swollen gums have absorbed the saltwater solution

• The water in the gums has moved from a high to a low concentration of water.

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Which of the following is present in both prokaryotes and eukaryotes?

• Endoplasmic reticulum

• Golgi body

• Ribosome

• Nucleus

The picture shows a contractile vacuole of a unicellular freshwater organism. The

contractile vacuole regulates the flow of water into and out of the cell in an aquatic

environment.

What conditions cause the contractile vacuole to fill with water?

• The concentration of water is greater outside the cell than inside the cell.

• The temperature of water in the vacuole is higher than the temperature of its environment.

• The concentration of water inside the cell is the same as the concentration outside the cell.

• The temperature of water in the vacuole is lower than the temperature of its environment

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