True 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 membrane

True 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 membrane

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter3: Cells And How They Work

Section: Chapter Questions

Problem 3SQ: Cell membranes consist mainly of a _________. a. carbohydrate bilayer and proteins b. protein...

See similar textbooks

Similar questions

Cell membranes consists mainly of ________ and ________ . a. lipids; carbohydrates c. lipids; phospholipids b. phospholipids; protein d. phospholipids; ECM
The 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 pumps
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.
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
Elastic nature of plasma membrane is due to the presence of (a) lipids (b) proteins (c) carbohydrates (d) water
What is the important role of cell membrane in keeping the normal function of the cell.You may cite situations where you could apply its mechanism in real life?
The cell membrane regulates the movement of molecules in and out the cell. what other functions does the cell membrane perform?
In cell membrane, the regulation of membrane rigidity is the function of _____. While proteins ______ A. Carbohydrates; Cell recognition B. Cholesterol; Move nutrients and electrolytes across C. Lipid; Impart polarity to the interior membrane D. Fatty acids; Prevent tight packing of fatty acid chains E.Cholesterol; Act as receptors for neurotransmitter and hormone binding
Osmosis is water movement across a semipermeable membrane. Which of the following is true about water movement across cell membranes? A. In a hypotonic solution, cells will swell. B. In an isotonic solution, cells will shrink. C. In a hypertonic solution, cells will stay the same. D. Cells can neither shrink nor swell because water cannot penetrate the plasma membrane.
Draw your own cartoon that shows the structure of a typical cell membrane, including proteins (includes integrated molecules (proteins, cholesterol, surface carbohydrates)and add labels
Match 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. oxygen
The phospholipid portion of biological membranes is referred to as "selectively permeable". What does this term mean? What types of substances can cross the phospholipid bilayer? What types cannot?