Human Biology Custom Edition
11th Edition
ISBN: 9781337631532
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 3, Problem 5SQ
The passive movement of a solute through a membrane protein down its concentration gradient is an example of _________.
- a. osmosis
- b. active transport
- c. endocytosis
- d. diffusion
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Chapter 3 Solutions
Human Biology Custom Edition
Ch. 3 - Describe the general functions of the following in...Ch. 3 - Which organelles are in the endomembrane system?Ch. 3 - Distinguish between the following pairs of terms:...Ch. 3 - What do enzymes do in metabolic reactions?Ch. 3 - In aerobic cellular respiration, which reactions...Ch. 3 - For the diagram of the aerobic pathway shown in...Ch. 3 - The plasma membrane __________. a. surrounds the...Ch. 3 - The _________ is responsible for a eukaryotic...Ch. 3 - Cell membranes consist mainly of a _________. a....Ch. 3 - Prob. 4SQ
Ch. 3 - The passive movement of a solute through a...Ch. 3 - Match each organelle with its correct function.Ch. 3 - Which of the following statements is not true?...Ch. 3 - Enzymes _______. a. enhance reaction rates b. are...Ch. 3 - Match each substance with its correct descriptionCh. 3 - Cellular respiration is completed in the ______....Ch. 3 - Prob. 11SQCh. 3 - In a mitochondrion, where are the electron...Ch. 3 - Prob. 1CTCh. 3 - Jogging is considered aerobic exercise because the...Ch. 3 - Section 3.17 mentions that arsenic poisons human...Ch. 3 - The cells of your body never use nucleic acids as...
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- The diffusion of water across a selectively permeable membrane is called? A. Active transport B. Facilitated diffusion C. Osmosis D. Cell membranearrow_forwardWhen cellular transport through the plasma membrane must be provided with energy in form of ATP to power the transport process, what is this called? A. Selective permeability B. Passive transport C. Active transport D. Diffusionarrow_forward38. _______________ is non-selective type of endocytosis, transporting substances into the cell. a. phagocytosis b. pinocytosis c. receptor-mediated endocytosis d. a and b e. a and carrow_forward
- The movement of both oxygen and carbon dioxide in the body is accomplished by a. Diffusion b. Endocytosis c.exocytosis d. Osmosisarrow_forwardWhich structure within the cell produces ATP (adenosine triphosphate)? A. the mitochondria B. the nucleus C. peripheral proteins D. the endoplasmic reticulumarrow_forwardA transport protein requires ATP to pump sodium ions across a membrane. This is a case of_______ . a. passive transport c. osmosis b. active transport d. facilitated diffusionarrow_forward
- The principal force driving movement in diffusion is __________. a. temperature b. particle size c. concentration gradient d. membrane surface areaarrow_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_forwardWhat is the name of the mechanism that ensures that there is a higher concen- tration of sodium ions in the extracellular fluid than in the intracellular fluid? A. Facilitated diffusion B. The sodium-potassium pump C. Secondary active transport D. Osmosisarrow_forward
- If an animal cell is placed into an environment in which the solute concentration outside the cell is lower than inside the cell, the cell will_____________. A. pump water out B. shrink C. swell D. stay the same sizearrow_forwardThe plasma membrane of a cell is composed of a ________ ________ and regulates molecular passage via _______ ________. a. potassium bilayer, unidirectional diffusion b. phospholipid bilayer, selective permeability c. phospholipid bilayer, random permeability d. protein wall, osmotic pumpsarrow_forwardThe protein spectrin found in the cortex of red blood cells functions as ______________. Select one: a. a transporter b. a structural protein c. an enzyme d. a receptor e. a hormonearrow_forward
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