BROOKER BIOLOGY
5th Edition
ISBN: 9781307656152
Author: BROOKER
Publisher: MCG/CREATE
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Chapter 41, Problem 3TY
Summary Introduction
Introduction: The cells having a similar structure and function associated with each other to form a tissue. In a body, the tissues are classified on the basis of their different structures and functions. The animal’s body the major types of tissues are muscle, nervous, epithelial and connective tissues.
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9) Gap junctions are intercellular connections that
A. primarily serve to keep cells separated and allow for transport across a tissue barrier.
B. serve as a regulated cytoplasmic bridge for sharing of small molecules between the cells.
C. serve as a barrier to prevent protein movement within the cellular membrane.
D. are cellular components for constitutive exocytosis that occurs between adjacent cells.
Which of the following statements describes the function of plasma membranes?
I. define the boundaries of the cell and its organelles and act as permeability barriers
II. sites for specific biological and chemical functions
III. possess transport proteins that regulate the movement of substances into and out of the cell and its organelles
IV. contain protein molecules that act as receptors to detect external signals
V. provide mechanisms for cell-to-cell contact, adhesion, and communication
A. I and III
B. I, III, IV
C. I, III, IV, V
D. I, II, III, IV, V
Which of the following statements about cellular membranes is/are FALSE?
A. Only lipids move Within the membrane, while the proteins are anchored and immobile.
B. Membranes are composed of lipids and proteins.
C. Substances may be transported across membranes by active transport, facilitated transport or diffusion.
D. Membrane proteins are classified as integral or peripheral, upon their function
Chapter 41 Solutions
BROOKER BIOLOGY
Ch. 41.1 - Core Skill: Modeling The goal of this modeling...Ch. 41.1 - Prob. 2CSCh. 41.2 - Prob. 1CCCh. 41.3 - Core Skill: Connections Can negative feedback...Ch. 41.3 - What similar feedforward process might occur in an...Ch. 41.4 - Prob. 1CCCh. 41.4 - Prob. 2CCCh. 41.4 - Prob. 3CCCh. 41.4 - Prob. 4CCCh. 41.4 - What symptoms are sometimes seen in athletes after...
Ch. 41.4 - Prob. 2EQCh. 41.4 - Prob. 3EQCh. 41 - Prob. 1TYCh. 41 - Structures composed of two or more tissue types...Ch. 41 - Prob. 3TYCh. 41 - From an examination of the structure of many...Ch. 41 - Prob. 5TYCh. 41 - The folds, convolutions, or extensions found in...Ch. 41 - Prob. 7TYCh. 41 - Prob. 8TYCh. 41 - Prob. 9TYCh. 41 - Prob. 10TYCh. 41 - Prob. 1CQCh. 41 - Define homeostasis, and give examples of...Ch. 41 - Prob. 3CQCh. 41 - Prob. 1COQCh. 41 - Discuss the organization of animal bodies from the...
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- Below are three statements - two of which are truths and one is a lie. Which of the following statements is a lie? a. Rough ER and smooth ER mainly function for protein synthesis. b. There are two types of secretory activities of a cell. c. A cell that makes steroid hormones has a high concentration of smooth endoplasmic reticulum.arrow_forwardIf a blood cell is placed in an isotonic solution, a. water will enter the cell b. water will leave the cell c. it will crenate d. none of the above The metacarpals are the bones of the: a. wrist b. foot c. ankle d. none of the above Stratified squamous tissue is an example of: a. epithelial tissue b. muscle tissue c. connective tissue d. nervous tissuearrow_forwardBelow are three statements - two of which are truths and one is a lie. Which of the following statements is a lie? Select one: a. Keratin - an intermediate filament, is classified as Types I and II or acid and base keratins. b. Microfilaments have two structures called bundles and networks. The former is used for movement inside the cell while the latter is for intercellular communication. c. Kinesin is a microtubule motor protein that helps in the transportation of cellular material essential to cell function and moves towards the minus end motor. Clear my choicearrow_forward
- 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.arrow_forwardWhich of the following is incorrect regarding facilitated diffusion?a. It is a passive process.b. It allows the movement of molecules from areas of lowconcentration to areas of high concentration.c. It may use either channel or carrier proteins.d. It allows the rapid transport of glucose across the membrane.arrow_forwardWhich of the following junctions allows for cytoplasm-to-cytoplasmcommunication between cells?a. adhesion junctions c. gap junctionsb. tight junctions d. None of these are correct.arrow_forward
- The difference between a gap junction and plasmodesmata is… Select one: a. Gap junctions are formed by microfilaments while plasmodesmata are formed by membrane b. Gap junctions are anchoring junctions while plasmodesmata are protein junctions. c. Gap junctions are formed by proteins making pores between two animal cells while plasmodesmata are formed due to incomplete cell division of membranes from adjoining plant cells.arrow_forwardWhich of the following statements is NOT TRUE about tissues? A. The extracellular matrix of blood tissue is the plasma B. In adipose tissue, tiny cells are surrounded by very thick extra cellular matrix which is where all the fat is located C. Epithelial cells sometimes have cilia like the ones used in comb jellies and placozoans D. Nervous Tissue has only one cell type, the neuronarrow_forwardWhich of the following are part of adherens junctions? a. Anchor proteins b. Actin filament c. Cadherin dimers d. A and C e. All of the abovearrow_forward
- If a cell could not properly incorporate proteins into its membrane , which of the following functions would be lost? A Synaptic transmission of an action potential B. Diffusion of oxygen from the circulatory system to interstitial fuild. C. Removal of the waste product CO2 from the cell to the interstitial fluid. O D. B And Carrow_forwardWhich statement about the plasma membrane is INCORRECT Select one : a It is composed of two layers of glycoprotein molecules . b. The plasma membranes of adjacent cells may be held together by desmosomes . . It contains receptors for specific molecules d . Gap junctions may be present between adjacent cells eltis selectively permeablearrow_forwardThe smooth endoplasmic reticulum is a. involved in protein synthesis. b. a site of protein glycosylation. c. used to store a variety of ions. d. the site of lipid and membrane synthesis.arrow_forward
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