Molecular and Cell Biology Chapter 16

Which of the following statements is part of the cell theory? Select ALL that apply.

• Cells are composed mostly of empty space.

• All cells have membrane-bound organelles.

• New cells are produced from existing cells.

• Only animals are made up of cells.

• All living things are made of cells.

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All cells contain genetic material (DNA). In cells of which of the following groups is the DNA enclosed in a nucleus?

• bacteria

• eukaryotes

• prokaryotes

• viruses

Which of the following structures are present in both plant and animal cells? Select ALL that apply.

• cell walls

• centrioles

• chloroplasts

• mitochondria

• cell membrane

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In eukaryotic cells, many organelles work together to produce and distribute proteins in/out of the cell. Which of the following organelles are involved in that process?

• Golgi apparatus

• ribosomes

• rough endoplasmic reticulum

• chloroplasts

• mitochondria

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The model shows a substance crossing a cell membrane. Which of the following describes the process?

• The model shows the process of osmosis because the solute particles are moving from an area of high concentration to an area of low concentration.

• The model shows the process of diffusion because solute particles are moving from an area of high concentration to an area of low concentration.

• The model shows the process of bulk transport because the solute particles are moving from an area of low concentration to an area of high concentration.

• The model shows the process of active transport because the solute particles are moving from an area of low concentration to an area of high concentration.

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The illustration shows a model of the transport of solute particles from outside the cell to inside the cell. What type of cell transport is modeled?

• The model illustrates active transport because energy is required to move the solute particles from an area of lower concentration to an area of higher concentration.

• The model illustrates diffusion because solute particles are moving from an area of higher concentration to an area of lower concentration.

• The model illustrates endocytosis because protein channels allow solute particles to cross the cell membrane.

• The model illustrates osmosis because water molecules are moving from an area of higher concentration to an area of lower concentration.

Which describes active transport, but not passive transport?

• particles diffuse directly through the lipid bilayer

• moves particles from high concentration to low concentration

• moves particles across the cell membrane

• requires cellular energy

The human digestive system is comprised of specialized cells, tissues, and organs. Which lists the parts from least complex to most complex?

• stomach < muscle cell < muscle tissue

• stomach < muscle tissue < muscle cell

• muscle cell < muscle tissue < stomach

• muscle tissue < muscle cell < stomach

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Which letter on this model of an animal cell represents the organelle that contains DNA and controls the cell’s functions?

• G

• B

• F

• J

• H

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_____________ convert light energy into chemical energy that is stored as food through the process of photosynthesis. Then, _____________ convert the chemical energy in molecules of food into molecules of ATP that the cell can use more easily.

• Chloroplasts, mitochondria

• Mitochondria, chloroplasts

• Ribosomes, nuclei

• Lysosomes, ribosomes

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