Laboratory Manual for Anatomy & Physiology
5th Edition
ISBN: 9780321885074
Author: Elaine N. Marieb
Publisher: Benjamin Cummings
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Chapter 3, Problem 3RQ
Summary Introduction
To determine:
The type of junction that permits the passage of ions and nutrients from cell to cell among the following:
(a) Desmosomes
(b) Gap junction
(c) Tight junction
(d) All of these
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Chapter 3 Solutions
Laboratory Manual for Anatomy & Physiology
Ch. 3 - Summarize the four key points of the cell theory.Ch. 3 - How would you explain the meaning of a generalized...Ch. 3 - What basic structure do all cellular membranes...Ch. 3 - Why do phospholipids, which form the greater part...Ch. 3 - What is the importance of the glycocalyx in cell...Ch. 3 - Prob. 6CYUCh. 3 - What is the energy source for all types of...Ch. 3 - What determines the direction of any diffusion...Ch. 3 - What are the two types of facilitated diffusion...Ch. 3 - What happens when the Na+-K+ pump is...
Ch. 3 - As a cell grows, its plasma membrane expands. Does...Ch. 3 - Prob. 12CYUCh. 3 - Which vesicular transport process allows a cell to...Ch. 3 - What process establishes the resting membrane...Ch. 3 - Prob. 15CYUCh. 3 - What term is used to indicate signaling chemicals...Ch. 3 - Which organelle is the major site of ATP...Ch. 3 - What are three organelles involved in protein...Ch. 3 - Compare the functions of lysosomes and...Ch. 3 - How are microtubules and microfilaments related...Ch. 3 - Prob. 21CYUCh. 3 - Prob. 22CYUCh. 3 - If a cell ejects or loses its nucleus, what is its...Ch. 3 - What is the role of nucleoli?Ch. 3 - What is the role of nucleoli?Ch. 3 - If one of the DNA strands being replicated reads...Ch. 3 - During what phase of the cell cycle is DNA...Ch. 3 - What are three events occurring in prophase that...Ch. 3 - Codons and anticodons are both three-base...Ch. 3 - How do the A, P, and E ribosomal sites differ...Ch. 3 - What is the role of DNA in transcription?Ch. 3 - What is the importance of ubiquitin in the life of...Ch. 3 - Prob. 33CYUCh. 3 - The smallest unit capable of life by itself is (a)...Ch. 3 - Prob. 2RQCh. 3 - Prob. 3RQCh. 3 - The term used to describe the type of solution in...Ch. 3 - Osmosis always involves (a) a selectively...Ch. 3 - Prob. 6RQCh. 3 - Prob. 7RQCh. 3 - The endocytotic process in which a sampling of...Ch. 3 - Prob. 9RQCh. 3 - The nuclear substance composed of histone proteins...Ch. 3 - The information sequence that determines the...Ch. 3 - Mutations may be caused by (a) X rays, (b) certain...Ch. 3 - The phase of mitosis during which centrioles each...Ch. 3 - Final preparations for cell division are made...Ch. 3 - The RNA synthesized on one of the DNA strands is...Ch. 3 - The RNA species that travels from the nucleus to...Ch. 3 - If DNA has a sequence of AAA, then a segment of...Ch. 3 - A nerve cell and a lymphocyte are presumed to...Ch. 3 - Prob. 19RQCh. 3 - Explain why mitosis can be thought of as cellular...Ch. 3 - Contrast the roles of ER-bound ribosomes with...Ch. 3 - Cells lining the trachea have whiplike motile...Ch. 3 - Name the three phases of interphase and describe...Ch. 3 - Comment on the role of the sodium-potassium pump...Ch. 3 - Differentiate between primary and secondary active...Ch. 3 - Cell division typically yields two daughter cells,...
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- The proteins in the plasma membranes may function as (a) receptors and channels. (b) carriers and enzymes. (c) anchors and identifiers. (d) a, b, and c are correct.arrow_forwardSelect the best answer or answers from the choices given: Membrane junctions that allow nutrients or ions to flow from cell to cell are (a) desmosomes, (b) gap junctions, (c) tight junctions, (d) all of these.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
- All of the following are passive membrane transport processes except: (a) diffusion. (b) facilitated diffusion. (c) vesicular transport. (d) osmosis.arrow_forwardBeginning with protein synthesis in membrane-bound ribosomes, hepatocytes secrete proteins into the circulation via which of the following mechanisms? (A) Active transport through the cell membrane (B) Diffusion through the cell membrane (C) Transport by microtubules and exocytosis (D) Transport in vesicles and exocytosis (E) Transport through pores in the cell membranearrow_forward1)What is the second type of lipid that plays a major role in the plasma membrane? This lipid does not have polar and nonpolar regions (its not amphiphilic) but plays a critical role in membrane permeability. A)Triglycerdies B) Steriod hormones c) cholesterol 2) In _______________, a single substrate/solute move from a high concentration area to a lower concentration are without the aid of any additional molecules. A) Diffusion B)Facilitated diffusion C) Cotransport 3)Channel proteins require a confirmational change in order to properly function. A) Hydrophilic B) ionic C) Polararrow_forward
- The endocytotic process in which particulate matter is brought into the cell is called (a) phagocytosis, (b) pinocytosis, (c) exocytosis.arrow_forwardc) 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. .... ...... ..... ... ..........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_forward
- Diffusion is important in body fluids because this process tends to:(a) increase local concentration gradients. (b) eliminate local concentration gradients. (c) move substances against their concentration gradients. (d) create concentration gradients.arrow_forwardWhich of the following components of the plasma membrane will help increase fluidity of the memebrane? a) cholesterol b) channel proteins c) phospholipid d) glycoproarrow_forwardWhich of the following statements is true of membrane proteins? a) They are suspended on the surface of the membrane. b) They are partly embedded in the bilayer c) They span across the bilayer and project from both sides d) Any of these are true, depending on the specific membrane protein.arrow_forward
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