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Cells Ch. 1 B
Test Description: Cells and Heredity Ch. 1 B
Instructions: Answer all questions to get your test result.
1) The cell membrane and water are both involved in
A
preventing chemical reactions.
B
the movement of materials into and out of the cell.
C
making chloroplasts.
D
directing the cell\'s activities.
2) Which term refers to the movement of molecules from an area of higher concentration to an area of lower concentration?
A
concentration
B
diffusion
C
collision
D
active transport
3) Which term refers to the diffusion of water molecules through a selectively permeable membrane?
A
active transport
B
engulfing
C
osmosis
D
passive transport
4) Enzymes are important because they
A
help the cell maintain its shape
B
contain genetic material
C
speed up chemical reactions
D
contain water
5) What is the function of a cell wall?
A
to protect and support the cell
B
to prevent oxygen from entering the cell
C
to prevent water from passing through it
D
to perform different functions in each cell
6) Unlike the cell wall, the cell membrane
A
is found in all cells
B
produces energy for the cell
C
is made of chromatin.
D
protects the nucleus with a rigid layer of cellulose.
7) Which organelles store food and other materials needed by the cell?
A
vacuoles
B
mitochondria
C
ribosomes
D
chloroplasts
8) When two or more elements combine chemically, they form a(n)
A
element
B
compound
C
lipid
D
atom
9) The invention of the microscope made it possible for people to discover
A
plants
B
cells
C
skin
D
animals
10) A substance that cannot be broken down into simpler elements is a(n)
A
element
B
compound
C
carbohydrate
D
particle
*select an answer for all questions
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