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 processes requires protein carriers to move materials up their concentration gradient?
____ a. active transport
____ b. osmosis
____ c. endocytosis
____ d. facilitated diffusion
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.
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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- The 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_forwardWhich of the following distinguishes osmosis from simple diffusion? a) a concentration gradient b) a solute c) a selectively permeable membrane d) water moleculesarrow_forwardMolecules that are too large to be moved across a cell membrane can enter the cell by? A. Diffusion B. Passive transport C. Osmosis D. Active transport B.passivearrow_forward
- Cells need to be attached to a basement membrane in order to divide. What property of cells is described? A. Anchorage-dependence B. Density-dependence C. Growth factor dependencearrow_forwardWhich process does not require cellular energy (and thus, it is a passive process)? a. primary active transport. b. carrier-mediated facilitated diffusion. c. endocytosis. d. exocytosis.arrow_forwardTypically, our cells have a high concentration of sodium ions outside and a low concentration of sodium ions inside. Sodium ions continue to move out of the cell by the process of: a) secondary active transport b) pinocytosis c) facilitated diffusion d)simple diffusion e) primary active transport f) osmosisarrow_forward
- What kind of work is involved when a bacterial cell rotates its flagellum for "run and tumble" mechanism? a. Transport b. Chemical c. Mechanical d. Transport and Chemicalarrow_forwardOne 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.arrow_forwardWhich of the following methods of transport is being used to transfer the substance into the cell in the accompanying graph? a. diffusion down a concentration gradient b. osmosis c. facilitated diffusion d. active transport e. vesicular transport f. It is impossible to tell with the information provided.arrow_forward
- Distinguish between the following pairs of terms: a. diffusion; osmosis b. passive transport; active transport c. endocytosis; exocytosisarrow_forwardWhich term best describes the following scenario: Calcium ions travel through the cell membrane into the cell, using an integral protein. There is a higher concentration of calcium in the cell. A) Diffusion/Passive transport B) Facilitated diffusion C) Active transport D) Fluid mosaic model E) All terms in this list are correctarrow_forwardChoose the processes from the list below which require active transport A. Water moving through the membrane B. Sodium moving out of a cell C. Potassium moving into a cell D. Endocytosis E. Oxygen moving from inhaled air into blood stream.arrow_forward
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