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WorksheetsCell Membrane, Lalli
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
What is the general name for all the structures with special functions inside the cell?
a)
Organelle
b)
Organ
c)
Plasma
d)
Membrane
2.
What is the name of the outer structure that surrounds the ENTIRE cell?
a)
Nuclear Envelope
b)
Interstitial Fluid
c)
Cell Membrane
d)
Cell Wall
3.
The cell membrane that surrounds the cell is made of what material?
a)
Protein
b)
Carbohydrates
c)
Phospholipids (Fats)
d)
Nucleic Acids
4.
Phospholipids are a unique molecule because they are "two-faced"! They have a water-loving side and a water-hating side. The water-loving side is called what?
a)
Hydrogen
b)
Hydrophilic (Polar)
c)
Hydrophobic (Non-polar)
d)
Maleable
5.
Which side of the phospholipid molecule touches both the inside and outside of the cell?
a)
No part of the molecule touches the inside and outside of the cell
b)
Cholesterol
c)
Hydrophobic "Tails"
d)
Hydrophilic "Heads"
6.
In addition to the phospholipids, which other molecule helps to strengthen and stiffen the cell membrane?
a)
Cholesterol
b)
Glucose
c)
Oxygen
d)
Amino Acids
7.
Name two properties of the cell membrane.
a)
Fluid but Impermeable (can't be penetrated)
b)
Rigid and Unforgiving
c)
Fluid and Permeable
d)
Stiff and Hard
8.
In addition to phospholipids, what other molecules made of PROTEIN are "floating" in the cell membrane?
a)
Channels and Receptors
b)
Insulin and Hemoglobin
c)
Muscle
d)
No proteins float in the cell membrane
9.
What type of molecules can directly pass through the cell membrane?
a)
Electrolytes (Na+, K+)
b)
Glucose
c)
Small hydrophobic molecules such as oil drops.
d)
No molecule can pass through the cell membrane directly!
10.
If a molecule canNOT pass thru the cell membrane, how does it eventually enter the cell?
a)
A channel may open to let it enter
b)
It keeps bumping against the cell membrane until it pokes a hole, then enters.
c)
It gives up and diffuses away. It never enters the cell.
d)
It is not known by scientists how particles enter the cell
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