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