Grade 7 Cells Final Review A Question Preview (ID: 6638)


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What is the total magnification of a microscope with two lenses when one lens has a magnification of 15, and the other lens has a magnification of 30?
a) 45
b) 150
c) 300
d) 450

What is the function of a cell membrane?
a) to support the cell
b) to perform different functions in each cell
c) to control what enters and leaves the cell
d) to form a hard outer covering for the cell

Specialized cells are found only in
a) animals
b) single-celled organisms
c) bacteria.
d) many-celled organisms.

Which term refers to the movement of molecules from an area of higher concentration to an area of lower concentration?
a) collision
b) diffusion
c) active transport
d) concentration

What is the function of a cell wall?
a) to protect and support the cell
b) to perform different functions in each cell
c) to prevent water from passing through it
d) to prevent oxygen from entering the cell

What are the products of photosynthesis?
a) carbon dioxide and water
b) oxygen and water
c) carbon dioxide and sugars
d) oxygen and sugars

How are photosynthesis and respiration related?
a) They have opposite equations.
b) They have the same equations.
c) They both produce carbon dioxide.
d) They both produce oxygen.

Mitosis is the stage of the cell cycle during which
a) the cell’s nucleus divides into two new nuclei.
b) the cell’s DNA is replicated.
c) the cell divides into two new cells.
d) the cell’s cytoplasm divides.

Factors that control traits are called
a) purebreads
b) genes
c) recessives
d) parents

An organism’s physical appearance is its
a) genotype
b) phenotype
c) codominance
d) heterozygous

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