EBK BIOLOGY
5th Edition
ISBN: 9780133954425
Author: Maier
Publisher: YUZU
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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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A cell that is missing this structure would not have a rigid structural support outside of its plasma membrane and would not be protected from exploding when placed in water. Name the structure and tell why. Then state which type of cell(s) have this structure.
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.
Active 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 direction
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- 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 correctarrow_forwardActive 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_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_forwardAnswer questions 3 and 4 in the image. The 5th question is already done.arrow_forwardMatch each item in column A with the most closely related item in column B. Place letters for answers in the spaces provided.arrow_forward
- The 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_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_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_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_forwardHow do these fluids affect the hydration, movement and transport in and to the cells: a. Isotonic b. Hypertonic c. Hypotonicarrow_forwardMake an illustration/representation that will show how cell membrane carry out the following function. 1. Compartmentalization 2. Selectively Permeable 3. Transporting Solutesarrow_forward
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