Biology: Science for Life with Physiology (5th Edition)
5th Edition
ISBN: 9780321922212
Author: Colleen Belk, Virginia Borden Maier
Publisher: PEARSON
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Chapter 3, Problem 10LTB
Summary Introduction
Introduction:
The water is an important molecule in the living entities. The cytoplasm is the main fluid present in the cells, and the basic component of the cytoplasm is water. Other than this, the water is used in many cellular reactions.
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Movement of cell against concentration gradient is called:
A.
osmosis
B.
active transport
C.
diffusion
D.
passive transport
If 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.
Choose answer of the following
The extracellular matrixa. assists in the movement of substances across the plasmamembrane.b. prevents the loss of water when cells are placed in a hypertonicsolution.c. has numerous functions that affect the shape and activities of thecell that produced it.d. contains the junctions that sometimes occur between cells.e. All of these are correct
Chapter 3 Solutions
Biology: Science for Life with Physiology (5th Edition)
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- Active transport must function continuously because. a. plasma membranes wear out b. not all membranes are amphiphilic c. facilitated transport opposes active transport d. diffusion is constantly moving solutes in opposite directionsarrow_forwardActive transport must function continuously because__________.a. plasma membranes wear outb. cells must be in constant motionc. facilitated transport opposes active transportd. diffusion is constantly moving the solutes in the other directionarrow_forwardTight juctions _________ Select one: a. prevent cytoplasm from moving b. prevent microtubules from moving c. prevent ubiquinine from moving d. prevent proteins from moving within their membrane domain e. prevent proteins from moving outside their membrane domainarrow_forward
- A plasma membrane_____ . a. controls exchanges between the cell and the external environment b. is a mesh of intermediate filaments c. is a type of extracellular matrixarrow_forwardThe passive, non-mediated movement of particles into or out of a cell following the particle’s concentration gradient is called A. osmosis B. vesicular transport C. filtration D. diffusion E. facilitated diffusion F. active transportarrow_forwardActive transport must function continuously because a.facilitated transport opposes active transport b.not all membranes are amphiphilic c.diffusion is constantly moving solutes in opposite directions d.the cell needs ions outside the cell e.plasma membrane wear outarrow_forward
- Which of the following processes requires protein carriers to move materials up their concentration gradient? ____ a. active transport ____ b. osmosis ____ c. endocytosis ____ d. facilitated diffusionarrow_forwardCells move polar molecules across the cell membrane against a concentration gradient using _______________ a simple diffusion. b modifications to membrane lipids. c energy and transport proteins. d random molecular movement.arrow_forwardThe image illustrates passive and active transport across the cell membrane. (Use the diagram to answer questions A-C) A. 1. Which section shows active transport?2. Explain why or how can you tell?3. Does the cell expend energy in this transport?4. Why or why not? B. 1. Which section shows diffusion?2. What type of solute molecules may be moved by this type of transport? C. Which of these sections are considered passive transport? Explain.arrow_forward
- The energy requiring mediated movement of small particles into or out of a cell up their concentration gradient is called A. diffusion B. facilitated diffusion C. active transport D. osmosis E. vesicular transport F. filtrationarrow_forwardwhich of the following statements is correct about the movement of water across a plasma membrane a. it cannot pass through any ion channels b. it moves through the membrane via mediated transport c. even though it a polar molecule, it moves readily through the nonpolar lipid bilayer d. artificial lipid membranes are impermeable to waterarrow_forwardHow do these fluids affect the hydration, movement and transport in and to the cells: a. Isotonic b. Hypertonic c. Hypotonicarrow_forward
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