Bundle: Human Biology, Loose-leaf Version, 11th + MindTap Biology, 1 term (6 months) Printed Access Card
11th Edition
ISBN: 9781305616660
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 3, Problem 3SQ
Cell membranes consist mainly of a _________.
- a. carbohydrate bilayer and proteins
- b. protein bilayer and phospholipids
- c. phospholipid bilayer and proteins
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Hydrophilic substances cannot pass straight through the plasma membrane due to the ________.
a.
physical size limitations of the bilayer
b.
hydrophobic heads surrounding the bilayer
c.
hydrophobic tails in the center of the bilayer
The main function of plasma membranes is to ________.
a.
physically protect the cell
b.
separate the internal environment of the cell from the environment
c.
ensure the cell properly communicates with stimuli
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 3 Solutions
Bundle: Human Biology, Loose-leaf Version, 11th + MindTap Biology, 1 term (6 months) Printed Access Card
Ch. 3 - Describe the general functions of the following in...Ch. 3 - Which organelles are in the endomembrane system?Ch. 3 - Distinguish between the following pairs of terms:...Ch. 3 - What do enzymes do in metabolic reactions?Ch. 3 - In aerobic cellular respiration, which reactions...Ch. 3 - For the diagram of the aerobic pathway shown in...Ch. 3 - The plasma membrane __________. a. surrounds the...Ch. 3 - The _________ is responsible for a eukaryotic...Ch. 3 - Cell membranes consist mainly of a _________. a....Ch. 3 - Prob. 4SQ
Ch. 3 - The passive movement of a solute through a...Ch. 3 - Match each organelle with its correct function.Ch. 3 - Which of the following statements is not true?...Ch. 3 - Enzymes _______. a. enhance reaction rates b. are...Ch. 3 - Match each substance with its correct descriptionCh. 3 - Cellular respiration is completed in the ______....Ch. 3 - Prob. 11SQCh. 3 - In a mitochondrion, where are the electron...Ch. 3 - Prob. 1CTCh. 3 - Jogging is considered aerobic exercise because the...Ch. 3 - Section 3.17 mentions that arsenic poisons human...Ch. 3 - The cells of your body never use nucleic acids as...
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- ________ is the process of a cell taking in needed molecules from the extracellular fluid. a. Phagocytosis b. Receptor-mediated endocytosis c. Pinocytosisarrow_forwardRibosomes are not considered true organelles because they are found in both prokaryotic and eukaryotic cells. A. True B. Falsearrow_forward_____keep fluid from leaking between cells. a. Tight junctions c. Gap junctions b. Adhering junctions d. Fibroblastsarrow_forward
- ______increase the surface area of some epithelial cells. a. Microfilaments c. Gap junctions b. Microvilli d. Adhering junctionsarrow_forwardThe 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_forwardWhich of the following is NOT a component of the cell plasma membrane? A. cholesterol B. proteins C. microfi laments D. phospholipidsarrow_forward
- Cellular organization (e.g. movement of organelles) is facilitated by __________. Cells are capable of resisting mechanical stress due to the presence of _________. Select one: a. microtubles, intermediate filaments b. actin, microtubules c. actin, intermediate filaments d. microtubles, actin e. intermediate filaments, actin Clear my choicearrow_forwardTrue or False _____ a. the cell membrane is a selectively permeable or semi-permeable structure. _____b. Different proteins found in the membrane play specific roles in cell transport _____c. The lipid bilayer prevents polar molecules from easily passing through _____d. Water molecules cannot pass through the lipid bilayer of the cell membranearrow_forwardWhat type of cell is found in a layer of cells of which the exterior layer is made of flattened-shaped cells? a.skeletal muscle cells b.red blood cells c.stratified squamous epithelial cells d.nerve cells e.all of the cell typesarrow_forward
- Mark the following statements about the plasma membrane as true or false. If a statement is false, correct it to make a true statement. a. _____ Integral membrane proteins generally span the width of the plasma membrane, whereas peripheral proteins are found on only one side of the membrane. b. _____ Cholesterol provides the plasma membrane with stability in the face of changing ion concentrations . c. _____ Membrane cholesterol is vitally important for cell-cell recognition. d. _____ Membrane proteins often function as channels or carriers. e. _____ The overall structure of the plasma membrane is a mosaic with the components locked tightly in placearrow_forwardMatch the following with the term that best describes them integral part of the plasma membrane can easily cross the semi-permeable plasma membrane cellular currency of cell that enables it to transport molecules against the concetration gradient (i.e active transport) act as channels carriers to transport polar molecules like sugars into cells A. phospholipids B. proteins C. ATP D. oxygenarrow_forwardCan you please label all of the parts of the diagramarrow_forward
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