Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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The most abundant atoms in living organisms are:
a. | carbon, oxygen, and hydrogen. | b. | oxygen and phosphorus. | c. | sulfur and
nitrogen. | d. | carbon, oxygen and nitrogen. |
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2.
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In the Food Web, the relationship between organisms K and J
can best be described as _______.
a. | Symbiosis | c. | Predator
– Prey | b. | Decomposers | d. | Competition |
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3.
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In the food Web, which organism is a producer?
a. | Organism G | b. | Organism
F | c. | Organism H | d. | Organism
C | e. | Organism B |
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4.
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In the food Web, which shows a correct predator-prey
relationship?
Predator
Prey
a. | Organism C -------- Organism
G | c. | Organism I --------- Organism
B | b. | Organism K -------- Organism
G | d. | Organism A -------- Organism
F |
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5.
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In the food Web, which organism is a
Herbivore?
a. | Organism E | b. | Organism
A | c. | Organism D | d. | Organism
C | e. | Organism B |
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6.
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In the food Web, which organism would have the greatest
negative impact if lost from the food web?
a. | Organism H | b. | Organism
E | c. | Organism K | d. | Organism
I | e. | Organism B |
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7.
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Which of the following statements is TRUE about food
webs?
a. | All animals only eat one kind of food. | b. | They consist of overlapping food chains in an ecosystem. | c. | There are always more consumers than producers in an
ecosystem. | d. | They consist of
non-overlapping food chains in an ecosystem. |
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 Figure 4-1A
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8.
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In the chemical reaction shown in Figure 4-1A, water and carbon dioxide
are:
a. | a form of energy. | b. | elements. | c. | the
reactants. | d. | the products. |
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9.
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Figure 4-1A shows a chemical reaction. In this chemical reaction, glucose
is:
a. | a form of energy. | b. | a reactant. | c. | a
lipid. | d. | a product. |
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10.
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The chemical reaction shown in Figure 4-1A illustrates the process known
as:
a. | decomposition. | b. | specific heat | c. | photosynthesis. | d. | cellular
respiration. |
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 Use Figure 2 to answer questions
8-13
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11.
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In the food Web, which organism would have the greatest negative impact if lost
from the food web?
a. | Organism F | b. | Organism E | c. | Organism
I | d. | Organism H | e. | Organism C |
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True/False
Nutrients in an ecosystem are:
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12.
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water, carbon, oxygen, nitrogen, and calcium
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13.
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not recycled by decomposers that return them to soil, water, or air.
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14.
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elements and compounds needed by organisms to stay alive.
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15.
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A(n) ____ is the simplest form of matter.
a. | cell | b. | element | c. | molecule | d. | compound |
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16.
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The process of rearranging atoms in one substance into a new substance is called
a:
a. | production. | b. | chemical reaction. | c. | compound. | d. | solution. |
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17.
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A single ____ is the smallest part of an element.
a. | cell | b. | molecule | c. | atom | d. | carbon compound |
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18.
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The following diagram represents the following EXCEPT:  a. | water. | c. | a compound. | b. | a molecule. | d. | an element. |
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19.
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Photosynthesis takes place in the:
a. | cell membrane. | b. | chloroplasts. | c. | cell’s solar
panel. | d. | vacuoles. |
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20.
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Photosynthesis and cellular respiration are connected because:
a. | they occur only in animal cells. | b. | the reactants
in cellular respiration are the products in photosynthesis. | c. | both occur in the
chloroplasts. | d. | animals produce the glucose that plants use for
photosynthesis. |
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21.
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An interaction where two species live together for a long time and at least one
of them benefits is called:
a. | competition. | c. | photosynthesis. | b. | symbiosis. | d. | abiotic. |
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22.
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What is (are) the product(s) in the equation?
4Fe + 3O2
—> 2Fe2O3
a. | 4Fe and 3O2 | c. | Fe | b. | 2Fe2O3 | d. | O3 |
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23.
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What is the dependent variable in the following equation?
How does the
amount of carbon dioxide effect the rate of photosynthesis?
a. | amount of carbon dioxide | c. | color | b. | rate of
photosynthesis | d. | amount of
oxygen |
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24.
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Which equation below represents cellular respiration?
a. | C6H12O6 + O2 ------>
CO2 + H2O | c. | CO2 + H2O ------>
C6H12O6 + O2 | b. | 4Fe + 3O2
—> 2Fe2O3 | d. | CH4 + O2 ------> CO2 + H2O
(water) |
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Short Answer
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25.
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Give two reasons why the energy pyramid gets smaller and smaller towards the
top.
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