Biology - Study Guide
8th Edition
ISBN: 9780321501561
Author: Martha R. Taylor
Publisher: PEARSON EDUCATION (COLLEGE)
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Chapter 11, Problem 4TYK
Summary Introduction
Introduction: G proteins are called as guanine
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Which of the following does not apply to a transmembrane receptor?
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It contains one or more hydrophobic stop-transfer sequence.
c.
It is important for cells to receive and transmit extracellular signals.
d.
It is an example of integral membrane protein.
What is the function of a phosphatase? a. A phosphatase removes phosphorylated amino acids from proteins. b. A phosphatase removes the phosphate group from phosphorylated amino acid residues in a protein. c. A phosphatase phosphorylates serine, threonine, and tyrosine residues. d. A phosphatase degrades second messengers in the cell.
Define the following terms: a. polar head group b. hydrophobic tail c. ligand d. motor protein e. GTP
Chapter 11 Solutions
Biology - Study Guide
Ch. 11 - How do plant hormones (often called plant growth...Ch. 11 - Prob. 2IQCh. 11 - Label the parts in the following diagram of an...Ch. 11 - Prob. 4IQCh. 11 - a. What does a protein kinase do? b. What is a...Ch. 11 - Prob. 6IQCh. 11 - Prob. 7IQCh. 11 - Prob. 8IQCh. 11 - a. What can one conclude from the fact that the...Ch. 11 - Prob. 1SYK
Ch. 11 - Briefly describe the three stages of cell...Ch. 11 - Some signaling pathways alter a proteins activity;...Ch. 11 - Prob. 4SYKCh. 11 - Prob. 1TYKCh. 11 - Steroid hormones a. bind to cell-surface...Ch. 11 - Prob. 3TYKCh. 11 - Prob. 4TYKCh. 11 - Which of the following is a key difference between...Ch. 11 - Many human diseases (including bacterial...Ch. 11 - Prob. 7TYKCh. 11 - If a protein is activated by the addition of a...Ch. 11 - Prob. 9TYKCh. 11 - Prob. 10TYKCh. 11 - From studying the effects of epinephrine on liver...Ch. 11 - You are a Ca2+ ion in a typical animal cell. Where...Ch. 11 - Which of the following molecules is incorrectly...Ch. 11 - Prob. 14TYKCh. 11 - Prob. 15TYK
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- The tails of the phospholipids of the plasma membrane are composed of _____ and are _____? a. phosphate groups; hydrophobic b. fatty acid groups; hydrophilic c. phosphate groups; hydrophilic d. fatty acid groups; hydrophobicarrow_forwardWhat is the role of cholesterol in animal cell membranes? A. Blocks the association of the fatty acyl chains of phospholipids at high temperature. B. Is a receptor site for hormones on the surface of membranes. C. Broadens the temperature range of optimum membrane fluidity. D. Aids in the transport of small hydrophobic molecules across the membrane. A fatty acid designated as 20:0 is ________, while one that is designated 20:3 delta ^5,8,11 is ________. A. complex; simple B. unsaturated; saturated C. saturated; unsaturated D. simple; complex E. monounsaturated; polyunsaturatedarrow_forwardWhich of the following proteins would not be produced in the Rough Endoplasmic Reticulum? A) insulin B) extracellular matrix proteins C) antibodies D) cytoplasmic proteins E) plasma membrane proteinsarrow_forward
- Which of the following are the common features for both adenylate cyclase and guanylyl cyclase? a) Both enzymes are integral membrane proteins b) The products produced by both enzymes acts as a second messenger c) Both a and b d) Neither a or barrow_forwardHow do small fat-soluble molecules normally get into a cell? a. they never get in b. the pass through specialized proteins in the cell membrane called aquaporins c. they bind to protein carriers d. they pass through membrane protein channels e. They dissolve in the hydrophobic components of the membrane and enter the cell by diffusionarrow_forwardAccording to the fluid-mosaic model of the plasma membrane, a.protein and phospholipids form a regular, repeating structure. b.the membrane is a rigid structure. c.phospholipids form a double layer, with the polar parts facing each other. d.proteins are free to move within a double layer of phospholipids.arrow_forward
- Which of the following best describes an integral membrane protein? A.A protein that has an extracellular domain, a membrane-spanning domain that spans the lipid bilayer of the plasma membrane, and an intracellular domain. B.A protein that peripherally associates with the membrane via ionic interactions another protein embedded in the membrane. C.A protein that is soluble in the cytoplasm. D.A protein that peripherally associates with the membrane via ionic interactions between polar charged amino acids and the polar head groups of the phospholipids in the membrane.arrow_forwardCO2 can cross the plasma membrane by diffusion. If a cell is in the process of metabolizing glucose, which direction would diffusion tend to carry CO2 molecules? (It may help to consider: where is CO2 highly concentrated? Would diffusion carry CO2 toward or away from this location? Group of answer choices A. From inside the cell to outside the cell B. From outside the cell to inside the cell C. not enough info to tellarrow_forwardWhich of the following does not apply to lipid asymmetry? a.It arises in the endoplasmic reticulum. b.It arises due to the flip-flop movement of specific phospholipids to the cytosolic monolayer. c.It is preserved throughout vesicular transport. d.It depends on the activity of flippase.arrow_forward
- Which of the following statements is false? Question 11 options: a) Nucleotides and amino acids can act as extracellular signal molecules. b) Some signal molecules can bind directly to intracellular proteins that bind DNA and regulate gene transcription. c) Some signal molecules are transmembrane proteins. d) Dissolved gases such as nitric oxide (NO) can act as signal molecules, but because they cannot interact with proteins they must act by affecting membrane lipids.arrow_forwardLipid rafts are microdomains in the plasma membrane that function as a stable platform for signaling and trafficking. Which of the following helps make the lipid rafts more stable and less mobile? phospholipid cholesterol sphingolipid a and b b and carrow_forwardHow can substances be transported across a membrane against their concentration gradient? A. If the plasma membrane is fully hydrophobic. B. The plasma membrane is permeable to all small molecules. C. Some membrane proteins act as channels for specific molecules to enter the cell. D. Some membrane proteins are ATP-dependent carrier molecules.arrow_forward
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