Microbiology: A Systems Approach
5th Edition
ISBN: 9781259706615
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Chapter 7, Problem 6MCQ
Summary Introduction
Introduction:
The plasma membranes are selectively permeable as the proteins mosaic lets only some selected molecules to pass through it. The transport of these selected molecules occurs in two ways: Passive transport, in which the movement of molecules across the membranes occurs by diffusion along the concentration gradient. It includes osmosis, facilitated diffusion, and simple diffusion. In energy-requiring transport, the movement of molecules across the cell membranes, against the concentration gradient, is facilitated by the expense of energy by the cell. It includes exocytosis, endocytosis, and active transport.
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Which of the following is true of passive transport?a. it requires a gradient
b. it uses the cell wall
c. it includes endocytosis
d. it only moves water
Which of the following is not true of endocytosis?a. It is a form of passive transport.b. It includes pinocytosis.c. It can occur in coated pits.d. It is used by Amoeba to feed on Paramecium.
One substance flows down its concentration gradient, and the energy is harnessed to move another substance up its gradient in the same direction. This best describes a. primary active transport. b. endocytosis. c. symport secondary active transport. d. antiport secondary active transport.
Chapter 7 Solutions
Microbiology: A Systems Approach
Ch. 7.1 - List the essential nutrients of a bacterial cell.Ch. 7.1 - Prob. 2AYPCh. 7.1 - List and define four different terms that describe...Ch. 7.1 - Define saprobe and parasite, and provide microbial...Ch. 7.1 - Prob. 5AYPCh. 7.1 - Identify the effects of isotonic, hypotonic, and...Ch. 7.1 - Name two types of passive transport and three...Ch. 7.2 - List and define five terms used to express a...Ch. 7.2 - Prob. 9AYPCh. 7.2 - Prob. 10AYP
Ch. 7.2 - Prob. 11AYPCh. 7.2 - Discuss characteristics of biofilms that...Ch. 7.3 - Summarize the steps of cell division used by most...Ch. 7.3 - Define doubling time and describe how it leads to...Ch. 7.3 - Compare and contrast the four phases of growth in...Ch. 7.3 - Prob. 16AYPCh. 7 - The source of the necessary elements of life is a....Ch. 7 - An organism that can synthesize all its required...Ch. 7 - Chemoautotrophs can survive on ______ alone. a....Ch. 7 - Prob. 4MCQCh. 7 - Prob. 5MCQCh. 7 - Prob. 6MCQCh. 7 - A cell exposed to a hypertonic environment will...Ch. 7 - Prob. 8MCQCh. 7 - Prob. 9MCQCh. 7 - In a viable plate count, each _____ represents a...Ch. 7 - Prob. 11TFCh. 7 - Prob. 12TFCh. 7 - Prob. 13TFCh. 7 - Prob. 14TFCh. 7 - A facultative anaerobe can grow with or without...Ch. 7 - Prob. 1CTQCh. 7 - Describe the process used by a saprobic microbe to...Ch. 7 - Prob. 3CTQCh. 7 - Explain what is happening to the bacterial...Ch. 7 - Prob. 5CTQCh. 7 - Prob. 1VCCh. 7 - Using the words that follow, please create a...
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- Cells transport sodium ions out of the cell against the sodium concentration gradient. This is an example of: a. facilitated diffusion b. simple diffusion c. diffusion via channel proteins d. endocytosis e. active transportarrow_forwardThe cell membrane surrounds some smaller molecules in solution and takes them into the cell. This is an example of: Select one: a. pinocytosis. b. facilitated transport. c. phagocytosis. d. diffusion.arrow_forwardIf a cell is in an isotonic environment, then a. the cell will gain water and burst. b. no water will move across the membrane. c. the cell will lose water and shrink. d. osmosis still occurs, but there is no net gain or loss of cell volume.arrow_forward
- Proteins from the Golgi leave the cell using A. active transport. B. facilitated diffusion. C. exocytosis. D. endocytosis.arrow_forwardThe movement of molecules from an area of low concentration outside of the cell membrane to an area of high concentration within a cell membrane is most likely which of the following types of transport? a. exocytosis b. diffusion c. endocytosis d. osmosisarrow_forwardMatch the term with its correct description: a. energy b. facilitated diffusion c. endocytosis d. passive transport e. active transport f. exocytosis g. carrier protein h. channel protein Transport protein that provides a tube-like opening in the plasma membrane through which particles can diffuse Is used during active transport but not passive transport Process by which a cell takes in material by forming a vacuole around it Particle movement from an area of higher concentration to an area of lower concentration Process by which a cell expels wastes from a vacuole A form of passive transport that uses transport proteins Particle movement from an area of lower concentration to an area of higher concentration Transport protein that changes shape when a particle binds with itarrow_forward
- Which of the following type of transport processes is commonly used by bacteria in a nutrient-deficient environment? Select one: A. facilitated diffusion OB. simple diffusion Oc. active transport D. osmosisarrow_forwardThe following is a type of active transport mechanism: O a Na-K-ATPase Protein Pump O b. Phagocytosis O c. Pinocytosis O d. Exocytosis Oe. All of the Abovearrow_forwardModel 1 and Model two are diagrams showing the process of two types of bulk transport which require energy. Which of the following statements correctly describes the type of transport that is occurring in Model 1 and Model 2? A . Model 1 and 2 are types of passive transport. B . Model 1 and 2 help to transport only one molecule at time. C . Model 1 shows endocytosis, where the cell surrounds molecules from outside the cell and takes the molecules into the cell. D . Model 2 shows endocytosis, where the cell surrounds molecules from inside the cell and releases them outside of the cell.arrow_forward
- Which of the following statements is/are true about transport proteins?I. They carry out biochemical functions that remove nutrients in a cell.II. They are proteins which have high specificity to a single kind of molecule.III. They function to accumulate solutes against the concentration gradient.IV. They are highly regulated in a cell.arrow_forwardFrom the list below choose all which apply to the process of diffusion. A. Requires energy B. Passive process C. Transports with concentration gradient D. Powered by random motion E. Transports against concentration gradient.arrow_forwardGlucose is often present in very low concentrations in environments populated by microorganisms. To import the maximum amount of available glucose, cells use a. Receptor-mediated endocytosis b. Simple diffusion c. Osmosis d. Facilitated diffusionarrow_forward
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