Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 4, Problem 4SQ
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 matrix
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The plasma membrane isa. a carbohydrate layer that surrounds groups of cells to protect them.b. a double lipid layer with proteins inserted in it, which surrounds every cell individually.c. a thin sheet of structural proteins that encloses cytoplasm.d. composed of proteins that form a protective barrier.
Elastic nature of plasma membrane is due to the presence of
(a) lipids
(b) proteins
(c) carbohydrates
(d) water
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 matrix
Chapter 4 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 4 - Effects of Kartagener Syndrome An abnormal form of...Ch. 4 - All cells have these three things in common:...Ch. 4 - Which of the following is,not a principle of the...Ch. 4 - The surface-to-volume ratio _______. a. does not...Ch. 4 - A plasma membrane ________. a. controls exchanges...Ch. 4 - True or false? Ribosomes are only found in...Ch. 4 - Unlike eukaryotic cells, prokaryotic cells ______....Ch. 4 - What controls the passage of molecules into and...Ch. 4 - The main function of the endomembrane system is:...Ch. 4 - Enzymes. contalned in _______ break down worn-out...
Ch. 4 - Put the following structures in order according to...Ch. 4 - Which of the following statements is false? a. The...Ch. 4 - Prob. 12SQCh. 4 - Which of the following organelles contains no DNA?...Ch. 4 - No animal cell has a ___________. a. plasma...Ch. 4 - Prob. 15SQCh. 4 - Expalin the difference between cytosol and...Ch. 4 - In a classic episode of Star Trek, a gigantic...Ch. 4 - Prob. 3CTCh. 4 - What type or micrograph is shown below? Is the...
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- Endoplasmic reticulum is an important part of endomembrane system of a cell. Explainhow the structure of endoplasmic reticulum depends on cell specialization.arrow_forwardWhich of the following is Not a function of the plasma membrane proteins? A. Acting as enzymes B. Acting as channels C. Acting as carriers D. Stabilizing temperaturearrow_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_forward
- The cytoplasm would be considered ___________________ relative to the extracellular fluid. a. Isotonic b. Hypotonic c. Hypertonic d. Passive e. Activearrow_forwardWhich of the below statements correctly describes the extracellular matrix? a)A layer that facilitates connections and communications with other cells in a tissue b)A gel like substance that resists compression c)All of the other answers are correct d)a complex mix of proteins and polysaccharides.arrow_forwardTonoplast, also called vacuolar membrane is a differentially permeable membrane surrounds the ______. A cytoplasm B vacuole C nucleus D mitochondriaarrow_forward
- Which of the following is not the role of the lysosome? a. transporting protein b. digesting damaged organelles c. recycling materials with a cell d. destroying harmful bacteriaarrow_forwardWhich of these cell junctions are open channels that connect the cytoplasm of adjoining plant cells? A. Adhering junctions B. Tight junctions C. Gap junctions D. Plasmodesmataarrow_forwardThe plasma membrane is said to be a fluid-mosaic model because it contains a. waxes suspended within a mosaic of phospholipids.b. a mosaic of proteins suspended within a phospholipid bilayer.c. a polysaccharide mosaic suspended within a protein bilayer.d. a mosaic of phospholipids suspended within a protein bilayer.arrow_forward
- When 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_forwardA cell that is specialized for movement requires a great deal of energy. What organelles do you think would be especially abundant in such a cell? Why?arrow_forwardWhich 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_forward
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