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WorksheetsBiology Chapter 7 Exam
Total questions: 40
Worksheet time: 48mins
What are the smallest units that make up your body?
tissue
cell
organ
organ system
What invention made the discovery of cells possible?
The lightbulb
The phonograph
The kinetoscope
The microscope
What type of organic molecule are enzymes?
carbohydrates
lipids
nucleic acids
proteins
What do both prokaryotic and eukaryotic cells contain?
membrane bound organelles
linear chromosomes
cytoplasm
a nucleus
The cell membrane is _______________ permeable.
selectively
somewhat
physically
ionically
The cell membrane is mostly made of what?
Membrane-spanning Proteins
Surface Proteins
Phospholipids
Carbohydrates
Located on the cell membrane surface, nucleus membrane or other cellular organelle membrane - they can bind to corresponding proteins to initiate cellular signaling pathways (reactions).
carrier protein
channel protein
receptor protein
Identify cholesterol molecule
structure a
structure b
structure h
structure i
Identify microfilament of the cytoskeleton
structure i
structure b
structure g
structure c
Plasma membranes are selectively permeable. This means
anything can pass in and out
the membrane regulates the passage of the material in and out of the cell
glucose cannot enter the cell
cholesterol cannot enter
Which is NOT a function of the membrane?
it forms a selective barrier
it has receptors for chemical messages
it is the control center of the cell
it is involved in self recognition
Which structure is the hydrophobic tail of the phospholipid molecule?
E
B
G
A2
The _______________ of the phospholipids in a cell membrane face inward towards each other.
heads
tails
stems
sticks
The suffix -phobic means
fear
loving
pho
phone
low to high uses energy/ATP
Concentration of substances is the same.
Need help from channel proteins. No energy required.
from high to low.
Uses energy.
Uses energy.
Doesn't need energy
