EBK HUMAN ANATOMY
9th Edition
ISBN: 8220103631327
Author: Nath
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 17RFT
A selectively permeable plasma membrane
(a) permits only water-soluble materials to enter or leave the cell freely.
(b) prohibits entry of all materials into the cell at certain times.
(c) permits the free passage of some materials but restricts passage of others.
(d) allows materials to enter or leave the cell only using active processes.
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c) Figure 3 shows how materials are actively transported across plasma membrane.
Extracellular
Process X
Process Y
Figure 3
i) Give two (2) similarities between process X and Y.
ii) State two (2) characteristics of a cell that carry out active transport.
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The fundamental bilayered structure of the plasma membrane is determined almost exclusively by (a) phospholipid molecules, (b) peripheral proteins, (c) cholesterol molecules, (d) integral proteins.
Which of the following processes requires the cell to expend metabolic energy directly (e.g., from ATP)? (a) osmosis (b) facilitated diffusion (c) all forms of carrier-mediated transport (d) active transport (e) simple diffusion
Chapter 2 Solutions
EBK HUMAN ANATOMY
Ch. 2 - Level 1 Reviewing Facts and Terms Match each...Ch. 2 - Prob. 2RFTCh. 2 - Level 1 Reviewing Facts and Terms Match each...Ch. 2 - Level 1 Reviewing Facts and Terms
Match each...Ch. 2 - Prob. 5RFTCh. 2 - Prob. 6RFTCh. 2 - Level 1 Reviewing Facts and Terms Match each...Ch. 2 - Match each numbered item with the most closely...Ch. 2 - Prob. 9RFTCh. 2 - All of the following membrane transport mechanisms...
Ch. 2 - Prob. 11RFTCh. 2 - Compared to the intracellular fluid, the...Ch. 2 - 13. Label the following organelles on the diagram...Ch. 2 - Prob. 14RFTCh. 2 - Prob. 15RFTCh. 2 - 16. Three major functions of the endoplasmic...Ch. 2 - 17. A selectively permeable plasma membrane
(a)...Ch. 2 - Prob. 18RFTCh. 2 - Identify the advantages a cell has because its...Ch. 2 - 2. Identify the three basic concepts that make up...Ch. 2 - 3. Identify the three passive processes by which...Ch. 2 - Compare and contrast facilitated diffusion and...Ch. 2 - Prob. 5RCCh. 2 - Prob. 6RCCh. 2 - 7. Name the stages of mitosis shown in this...Ch. 2 - Identify the four general functions of the plasma...Ch. 2 - Prob. 1CTCh. 2 - Experimental evidence demonstrates that in the...Ch. 2 - Solutions A and B are separated by a selectively...
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- List the organelles that are plentiful in cells that (a) synthesize and secrete proteins, (b) actively transport substances into cells, and (c) ingest foreign substances by endocytosis. Explain the function of each organelle you list.arrow_forwardImagine you are working in a lab and you examine an unknown cell only to discover it possesses gap junctions and microvilli. Based on those findings, what can you assume regarding its function(s)? O a) it specializes in intercellular communication O b) it can withstand mechanical stress c) it likely functions in absorption O d) A and C O e) B and Carrow_forwardProteins which are only on one side of the plasma membrane and may not interact with the phospholipids directly. The proteins are often involved in intracellular signialing. a) cholesterol b) peripheral protein c) integral proteins D) glycolipidarrow_forward
- Which of the following is not a function of the plasma membrane? (a) transports materials (b) helps structurally link cells (c) has receptors that relay signals (d) anchors the cell to the extracellular matrix (e) manufactures proteinsarrow_forwardThe endocytotic process in which particulate matter is brought into the cell is called (a) phagocytosis, (b) pinocytosis, (c) exocytosis.arrow_forwardWhich statements are consistent with the fluid-mosaic model of membranes? (a) All membrane proteins are bound to the interior of the membrane. (b) Both proteins and lipids undergo transverse (flip-flop) diffusion from the inside to the outside of the membrane. (c) Some proteins and lipids undergo lateral diffusion along the inner or outer surface of the membrane. (d) Carbohydrates are covalently bonded to the outside of the membrane. (e) The term mosaic refers to the arrangement of the lipids alone.arrow_forward
- Factors that affect the rate of diffusion through a membrane include all of the following EXCEPT: a)membrane surface area. b) molecular weight. c) availability of energy. d) steepness of concentration gradient.arrow_forwardIn the cell there are three types of filaments that form the cell skeleton. Answer:a)Which they are.b)How they are constructed.c)What their function is.arrow_forwardName the parts of a cell in which the following organelles exist: (a) centrioles, (b) microtubules, (c) nuclear envelope, (d) chromatin. What are their functions?arrow_forward
- Which of the following describes the plasma membrane? 1) phospholipid bilayer surrounding the cell 2) a membrane composed of tiny shelves or cristae 3) single-layered membrane that surrounds the nucleus of the cell 4) double layer of protein enclosing the plasmaarrow_forwarda) Give the two main membrane proteins.b) State a function each of the mentioned protins. c) Explain why change in pH can affect the function of the proteins.arrow_forward
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