Cells Ch. 1 B Question Preview (ID: 6204)


Cells And Heredity Ch. 1 B. TEACHERS: click here for quick copy question ID numbers.

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.

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

Which term refers to the diffusion of water molecules through a selectively permeable membrane?
a) osmosis
b) passive transport
c) active transport
d) engulfing

Enzymes are important because they
a) contain water
b) help the cell maintain its shape
c) contain genetic material
d) speed up chemical reactions

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

Unlike the cell wall, the cell membrane
a) is found in all cells
b) produces energy for the cell
c) protects the nucleus with a rigid layer of cellulose.
d) is made of chromatin.

Which organelles store food and other materials needed by the cell?
a) mitochondria
b) vacuoles
c) ribosomes
d) chloroplasts

When two or more elements combine chemically, they form a(n)
a) lipid
b) atom
c) element
d) compound

The invention of the microscope made it possible for people to discover
a) plants
b) cells
c) animals
d) skin

A substance that cannot be broken down into simpler elements is a(n)
a) particle
b) compound
c) carbohydrate
d) element

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