UNE PHSL 1010 Exam 1 Study Guide questions and complete correct answers
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Module
NU1426
Institution
NU1426
UNE: PHSL 1010 Exam 1 Study Guide questions and complete correct answers
integral proteins
peripheral protein
Carbohydrate group
Cholesterol
Structural protein
enzyme (protein)
receptor protein
carrier protein
adhesion proteins
simple diffusion (passive transport)
facilitated diffusion
...
UNE: PHSL 1010 Exam 1 Study Guide questions
and complete correct answers
1). Integral proteins
Ans: Penetrate the hydrophobic interior of the lipid bilayer. Commerce via facilitated or
active.
2). Peripheral protein
Ans: A protein loosely bound to the surface of a membrane or to part of an integral
protein and not embedded in the lipid bilayer.
3). Carbohydrate group
Ans: Linked with protein or lipids and function as adhesion.
4). Cholesterol
Ans: Steroid common in cell membranes, also in many hormones. Functions as
support make the membrane more rigid and less soluble.
5). Structural protein
Ans: used for support such as connective tissue and keratin that forms hair and finger
nails
6). Enzyme (protein)
Ans: A type of protein that speeds up a chemical reaction in a living thing
7). Receptor protein
Ans: Membrane protein with carbohydrates attached that helps cells identify "self" and
plays a role in blood types, organ transplants, and germ recognition.
8). Carrier protein
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, Ans: A membrane protein, specifically a transport protein, that holds onto molecules
and changes their shapes in a way that shuttles them across the membrane.
9). Adhesion proteins
Ans: membrane proteins that form junctions between adjacent cells
10). Simple diffusion (passive transport)
Ans: Nonpolar lipid soluble substances diffuse directly through the phospholipid
bilayer. (Solids Only)
11). Facilitated diffusion
Ans: Movement of specific molecules across cell membranes through protein
channels. Passive transport down the electrochemical gradient.
12). Primary active transport
Ans: Active transport that relies directly on the hydrolysis of ATP. Goes against
electrochemical gradient.
13). Secondary active transport
Ans: Driven by ion movement down its gradient.
14). Transport/channel proteins
Ans: allow passage of hydrophilic substances across the membrane
15). Gated channel protein
Ans: A transport protein that opens a "gate," allowing a molecule to flow through the
membrane.
16). Endocytosis
Ans: process by which a cell takes material into the cell by infolding of the cell
membrane
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