ch3 - The Cellular Level of Organization MULTIPLE CHOICE....

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Unformatted text preview: The Cellular Level of Organization MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The smallest living unit within the human body is A) an organ. B) a protein. C) a tissue. D) the cell. E) an organ system. 1) 2) The watery component of the cytoplasm is called A) extracellular fluid. B) protoplasm. C) a colloidal gel. D) cytosol. E) interstitial fluid. 2) 3) Which of the following terms is not used to define the structure that separates the contents of a human cell from its surrounding medium? A) cell wall B) plasmalemma C) cell membrane D) plasma membrane E) both A and D 3) 4) Functions of the plasmalemma include all of the following, except A) structural support. B) regulation of exchange of materials with the extracellular environment. C) sensitivity to chemical changes in the extracellular fluid. D) thermal insulation. E) separation of the cytoplasm from the extracellular fluid. 4) 5) The plasma membrane is composed of A) a bilayer of proteins. B) carbohydrates and lipids. C) carbohydrate molecules. D) carbohydrates and proteins. E) a bilayer of phospholipids. 5) 6) Which of the following is not a function of membrane proteins? A) bind to ligands B) act as anchors or stabilizers for the cell membrane C) regulate the passage of ions D) act as carrier molecules for various solutes E) cell nutrient 6) 1 7) Functions of the glycocalyx include A) identifying the cell for the immune system. B) binding extracellular compounds. C) lubricating and protecting the cell membrane. D) all of the above E) B and C only 7) 8) Each of the following is an example of a nonmembranous organelle, except A) ribosomes. B) centrioles. C) cytoskeleton. D) cilia. E) lysosomes. 8) 9) Components of the cytoskeleton may include all of the following, except A) microfilaments. B) microsomes. C) thick filaments. D) intermediate filaments. E) microtubules. 9) 10) Tubulin is to microtubules as actin is to A) microvilli. B) microfilaments. C) intermediate filaments. D) flagella. E) ribosomes. 10) 11) Which of the following cytoskeleton components moves the chromosomes during cell division? A) basal bodies B) microtubules C) microfilaments D) thick filaments E) intermediate filaments 11) 12) Most of the ATP required to power cellular operations is produced in the A) mitochondria. B) nucleus. C) cilia. D) endoplasmic reticulum. E) cytoplasm. 12) 13) In the mitochondrion, folds are to cristae as the contained fluid is to A) cytosol. B) microvilli. C) basal body. D) matrix. E) actin. 13) 2 14) The components of ribosomes are formed within A) lysosomes. B) Golgi complexes. C) the endoplasmic reticulum. D) mitochondria. E) nucleoli. 14) 15) Synthesis of lipids and glycogen takes place at the A) smooth ER....
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This note was uploaded on 09/21/2011 for the course BIOL 2401 taught by Professor Rameriz during the Spring '11 term at University of Texas at Dallas, Richardson.

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ch3 - The Cellular Level of Organization MULTIPLE CHOICE....

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