|
|
|
1.
|
Microscopes led to the discovery that all organisms are
A | made of cells. | B | identical biochemically. | C | multicellular. | D | different
species. |
|
|
|
2.
|
Together, all of the chemical processes that build up and break down materials
in organisms are called
A | respiration. | B | photosynthesis. | C | metabolism. | D | homeostasis. |
|
|
|
3.
|
The substance that covers the majority of Earth's surface and also makes up
the largest percentage of your cells is
A | carbon. | B | water. | C | hydrogen. | D | nitrogen. |
|
|
|
4.
|
What is the name of the negatively charged particles shown in this model of an
atom?  A | electrons | B | protons | C | neutrons | D | prions |
|
|
|
5.
|
Through photosynthesis, plants convert energy from sunlight into
A | thermal energy. | B | chemical energy. | C | light
energy. | D | mechanical energy. |
|
|
|
6.
|
When a rabbit runs away from a fox, its muscles need
A | homeostasis. | B | heat. | C | carbon. | D | energy. |
|
|
|
7.
|
To test whether a plant grows better in acidic or basic soil, the amount of
water and sunlight the plants receive must be controlled as factors called
A | observations. | B | dependent variables. | C | independent
variables. | D | constants. |
|
|
|
8.
|
Which of the following statements is true of the substance produced in the
simple chemical reaction depicted in Figure 2.2?  A | It is in a different physical state than the original substances. | B | It is identical to
the original substances. | C | It is a compound, just like the original
substances. | D | It contains more atoms than the original substances. |
|
|
|
9.
|
Which of the following processes enables cells to stay within the limited range
of conditions in which they function best?
A | biodiversity | B | adaptation | C | homeostasis | D | metabolism |
|
|
|
10.
|
Elements such as carbon can move through the environment and organisms in a
cycle because living and nonliving things interact in
A | cells. | B | ecosystems. | C | organisms. | D | species. |
|