5. A(An)
is a well-tested explanation that unifies a broad range
of observations.
6. In
reproduction, the new organism has a single parent.
7. A(An)
is a signal to which an organism responds.
8. The
system is a decimal system of measurement whose units
are based on certain physical standards and are scaled on multiples of 10.
Matching in the space provided, write the letter of the definition that best matches each term.
9. biology
a. a collection of living matter enclosed by a barrier that
10. microscope
separates it from its environment
b. combination of chemical reactions through which an
11. cell
organism builds up or breaks down materials
12. cell fractionation c. a laboratory technique in which a group of cells develops
13. homeostasis
from a single cell
14. metabolism
d. process of keeping an organism's internal conditions
constant
15. cell culture
e. a device that produces magnified images of structures
that are too small to see with the unaided eye
f. a laboratory technique in which cells are separated into
cell parts
g. the science that seeks to understand the living world
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