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