Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 6R
Compare and contrast the following
- a. simple diffusion and facilitated diffusion
- b. active transport and facilitated diffusion
- c. active transport and group translocation
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From 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.
Which is common between active transport and facilitated diffusion
A Both uses metabolic energy
B Both processes happen with the aid of transport proteins
C Both of them transport molecules from lower to higher concentration
D Both of them transport molecules from higher to lower concentration
Which of these statements about facilitated diffusion is true?a. In facilitated diffusion, net movement is down the concentrationgradient.b. Facilitated diffusion requires the expenditure of energy.c. Facilitated diffusion does not require a carrier protein.d. Facilitated diffusion moves materials through ion pumps.e. Facilitated diffusion moves materials in vesicles.
Chapter 4 Solutions
Microbiology: An Introduction
Ch. 4 - DRAW IT Diagram each of the following flagellar...Ch. 4 - Endospore formation is called (a) _____. It is...Ch. 4 - DRAW IT Draw the bacterial shapes listed in (a),...Ch. 4 - Match the structures in column A to their...Ch. 4 - Why is an endospore called a resting structure? Of...Ch. 4 - Compare and contrast the following a. simple...Ch. 4 - Prob. 7RCh. 4 - Starch is readily metabolized by many cells, but a...Ch. 4 - Match the characteristics of eukaryotic cells in...Ch. 4 - NAME IT What group of microbes is characterized by...
Ch. 4 - Which of the following is not a distinguishing...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which of the following statements best describes...Ch. 4 - Which of the following is false about fimbriae? a....Ch. 4 - Which of the following pairs is mismatched? a....Ch. 4 - Which of the following pairs is mismatched? a....Ch. 4 - You have isolated a motile, gram-positive cell...Ch. 4 - The antibiotic amphothericin B disrupts plasma...Ch. 4 - How can prokaryotic cells be smaller than...Ch. 4 - The smallest eukaryotic cell is the motile alga...Ch. 4 - Two types of prokaryotic cells have been...Ch. 4 - In 1985, a 0.5-mm cell was discovered in...Ch. 4 - When E. coli cells are exposed to a hypertonic...Ch. 4 - Clostridium botulinum is a strict anaerobe; that...Ch. 4 - A South San Francisco child enjoyed bath time at...Ch. 4 - Live cultures of Bacillus thuringiensis (Dipel)...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 1.There are different processes for transport of molecules of ions across cell membranes. Explain briefly each process a. Simples diffusion b. Facilitated diffusion via carrier proteins c. Facilitated diffusion via ion channels d. Primary active transport e. Secondary active transport f. Endocvtosis g. Exocytosis h. Transcytosis 2. List four Physical factors that affect the rate of diffusion and how they will affect it. 3. What kind of molecules can pass through the plasma membrane of the cells through simple diffusion? Give brief discussion. 4. List the three main parts of a cell and explain their functions. 5. Define an organelle. Which organelles are surrounded by a membrane and which are not? 6. What is the key difference between passive and active process? 7. Why RNA transcription can still serve the needs of the cell even if its operation is slow compared to DNA?arrow_forwardThe main force driving movement in diffusion across membranes is due to A. concentration gradients B. Size of the molecules C. Membrane surface area D. Temperature Questionarrow_forwardCells 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_forward
- How does each of the following molecule pass through the plasma membrane in the described scenarios? A. Both simple diffusion and facilitated diffusion B. facilitated diffusion C. simple diffusion D. active transport 1. Molecular oxygen (O2) and carbon dioxide (CO2) traveling downtheir concentration gradient. 2. inorganic ions traveling down their concentration gradient 3. glucose traveling against its concentration gradient 4. water molecules (H2O) traveling down their concentration gradientarrow_forwardChoose answer of the following Which of the following is incorrect regarding facilitated diffusion?a. It is a passive process.b. It allows the movement of molecules from areas of lowconcentration to areas of high concentration.c. It may use either channel or carrier proteins.d. It allows the rapid transport of glucose across the membrane.arrow_forwardWhich of these REQUIRES active transport in order to cross the plasma membrane?arrow_forward
- Define the following terms:a. CFTRb. simple diffusionc. facilitated diffusiond. Na+-K+ pumpe. aquaporinarrow_forward25.arrow_forwardDescribe and explain the difference between: a. Active and passive transport across a membrane. Give an example (can be broad) of a molecule that crosses a membrane for each mechanism. b. Primary vs secondary active transport. Give an example of a molecule(s) that crosses a membrane for each mechanism.arrow_forward
- What is NOT true about diffusion: 1. A form of passive transport. 2. Uses adenosine triphosphate to transport substances across the plasma membrane. 3. Tendency of molecules to move from an area of higher concentration to an area or lower concentration. 4. Classified as either facilitated diffusion or simple diffusion.arrow_forwardWhat variable(s) influence(s) whether a nonpolar molecule can move across a membrane by passive diffusion? a. The structure of the phospholipids bilayer b. The difference in concentration of the molecule across the membrane c. The presence of transport proteins in the membrane d. All of the choices are correct.arrow_forwardThe comparison of the simple diffusion, facilitated diffusion and active transport are shown in the table below: * Which comparisons are TRUE? Simple Diffusion Facilitated Diffusion Active Transport I Require ATP Does not require ATP Require ATP II Does not involve a Involve a transport Involve a transport transport protein protein protein From a region of higher III From a region of higher concentrațion of substance to a region of lower concentration of From a region of lower concentration of concentration of substance to a region of lower concentration of substance. substance to a region of higher concentration of substance. substance. O I and II only I and III only O Il and III only O I, Il and IIIarrow_forward
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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license