Download Chapter 5 Review Guide Answer Key

NAME: ____________________________________________________________ DATE: _______________________
Honors Biology: CH 5 Study Guide
1. Label the parts of the cell membrane.
a. Glycoprotein
b. Glycolipid
c. Carb Chain
d. Nonpolar/hydrophobic fatty
acid tails
e. Phospholipid bilayer
f. Polar/hydrophilic phosphate
heads
g. Peripheral protein
h. Cholesterol
i.
Integral protein or channel protein
2. Draw a phospholipid and label its parts. Indicate which parts are: polar, nonpolar, hydrophilic, and
hydrophobic.
See lettesr d and f above
3. Fill in the table below.
Membrane Protein
Function
Receptor Protein
receives chemical signals (hormones or neurotransmitters) from other cells
Glycoprotein
has carbohydrate chain attached/ involved in cell-cell recognition
catalyzes chemical reactions
enzymatic
NAME: ____________________________________________________________ DATE: _______________________
pumps substances against their concentration gradient
carrier protein
(protein pump)
Channel Protein
involves substances moving from areas of high concentration to low
concentration (facilitated diffusion)
4. Describe how the cell membrane is selectively permeable.
Small, nonpolar substances can cross directly through the phospholipid bilayer. Larger, charged ions, or
polar substances must go through a protein
5. What is the function on cholesterol in the cell membrane?
Maintain the fluidity (how much it can move) of the cell membrane
6.
List two differences between passive transport and active transport. Then list at least 3 examples for
each type of transport.
PASSIVE TRANSPORT
ACTIVE TRANSPORT
moves substances from areas of high
concentration to low concentration (down/with the
concentration gradient)
moves substances from areas of low concentration
to high concentration (against the concentration
gradient)
does NOT require ATP(energy)
requires ATP(energy)
Examples:
1. Diffusion
2. Facilitated diffusion
3. Osmosis
Examples:
1. Protein pumps/ carrier proteins
2. Endocytosis (phagocytosis & pinocytosis)
3. exocytosis
7. Fill in the table below.
Type of Solution
Isotonic
Definition
concentration of solute is equal on
both sides of the membrane
Effects on the cell
water moves in and out at equal
rates
NAME: ____________________________________________________________ DATE: _______________________
Hypotonic
Concentration of solute is lower
net movement of water into the
cell
animal cells may burst - cytolysis
Hypertonic
concentration of the solute is
higher
Net movement of water out of the
cell
Plasmolysis (plant) or Crenation
(animal) – cytoplasm shrinks
8. A cell is placed in an environment that has 10% solute. The cytoplasm of the cell has 5% solution.
What type of solution is the cell in? Which way is the net movement of the water?
Hypertonic, water moves out
9. Describe, in detail, how the sodium potassium pump works.
See picture in book and animation online
10. What is the difference between endocytosis and exocytosis? What are two types of endocytosis?
Endocytosis – large amounts of particles enter (phagocytosis = cell engulfing particles; pinocytosis= cell
engulfing liquids)
Exocytosis – large amounts of particles exit
11. Fill in the table below.
Type of Junction
Description
Example
NAME: ____________________________________________________________ DATE: _______________________
Gap
space between cells to allow for exchange of
information (neurotransmitters or hormones)
Nerve/Brain Cells
tissues that line organs or
create barriers
Tight Junctions
Proteins create zipper like fastenings between
cells
bladder / stomach
Adhesion
Hold cells together where tissues stretch