Multiple Choice
Identify the choice that best completes the
statement or answers the question.
|
|
|
1.
|
What are the products of photosynthesis?
a. | carbon dioxide and water | b. | oxygen and water | c. | carbon dioxide and
sugars | d. | oxygen and sugars |
|
|
|
2.
|
What happens during photosynthesis?
a. | The cell uses oxygen to make food. | b. | The cell uses the energy in sunlight to make
food. | c. | The cell uses glucose to make oxygen. | d. | The cell uses the energy in sunlight to make
carbon dioxide. |
|
|
|
3.
|
How does photosynthesis benefit heterotrophs?
a. | It adds carbon dioxide to the air. | b. | It creates food that they can
eat. | c. | It eliminates harmful sugars. | d. | It creates clean
water. |
|
|
|
4.
|
What happens during respiration?
a. | Oxygen is released into the air. | b. | Glucose is broken down, releasing
energy. | c. | Carbohydrates are released into the bloodstream. | d. | Water and carbon
dioxide are converted into energy. |
|
|
|
5.
|
The stage of respiration that releases most of the energy in glucose occurs in
the
a. | nucleus. | b. | chloroplast. | c. | cytoplasm. | d. | mitochondria. |
|
|
|
6.
|
How are photosynthesis and respiration related?
a. | They have opposite equations. | b. | They have the same
equation. | c. | They both produce carbon dioxide. | d. | They both produce
oxygen. |
|
|
|
7.
|
Together, respiration and photosynthesis keep the levels of carbon dioxide and
oxygen in the atmosphere
a. | fairly constant. | b. | constantly changing. | c. | constantly
increasing. | d. | constantly decreasing. |
|
|
|
8.
|
The energy-releasing process that does not require oxygen is called
a. | photosynthesis. | b. | respiration. | c. | fertilization. | d. | fermentation. |
|
|
|
9.
|
Under which of the following conditions is lactic-acid fermentation most likely
to occur?
a. | a very fast run | b. | a long walk | c. | sleeping | d. | playing video
games |
|
|
|
10.
|
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. |
|
|
|
11.
|
What happens during cytokinesis in animal cells?
a. | A new round of mitosis begins. | b. | Two new daughter cells are
formed. | c. | Each organelle divides into two parts. | d. | A cell plate forms in the middle of the
cell. |
|
|
|
12.
|
Cancer is a disease in which cells
a. | grow and divide uncontrollably. | b. | die before they can mature. | c. | stop producing
DNA. | d. | die during mitosis. |
|
|
|
13.
|
How many different types of cancer are there?
a. | 10 | b. | over 100 | c. | over
500 | d. | over 1,000 |
|
|
|
14.
|
Scientists think cancer begins when
a. | a mutation occurs in DNA. | b. | a cell divides too slowly. | c. | DNA replication
stops. | d. | cells stop growing. |
|
|
|
15.
|
What is a cancer tumor?
a. | a group of cells in the bloodstream | b. | a mass of normal cells | c. | a mass of abnormal
cells | d. | a mass of cells that don’t divide |
|
|
|
16.
|
What is chemotherapy?
a. | the use of drugs to treat a disease | b. | the use of surgery to treat a
disease | c. | the use of radiation to treat a disease | d. | the use of drugs to
prevent cancer from occurring |
|
|
|
17.
|
What is a major cause of lung cancer?
a. | water pollution | b. | air pollution | c. | an unhealthy
diet | d. | smoking |
|
|
|
18.
|
What captures energy from sunlight during photosynthesis?
a. | solar cells | b. | stomata | c. | chlorophyll and
other pigments | d. | carbohydrates |
|
|
|
19.
|
Carbon dioxide enters plants through the
a. | pigments. | b. | chloroplasts. | c. | chlorophyll. | d. | stomata. |
|
|
|
20.
|
In which of these does alcoholic fermentation occur?
a. | carbon dioxide | b. | lactic acid | c. | muscle
cells | d. | yeast |
|
|
|
21.
|
What is copied during replication?
a. | the cell’s organelles | b. | chromosomes | c. | the cell’s
DNA | d. | two daughter cells |
|
|
|
22.
|
What factor may lead to almost as many cancer deaths as does tobacco?
a. | water pollution | b. | an unhealthy diet | c. | air
pollution | d. | exercise |
|
|
|
23.
|
The stage of the cell cycle that follows mitosis is called
a. | interphase. | b. | metaphase. | c. | cytokinesis. | d. | telophase. |
|
|
|
24.
|
The regular cycle of growth and division that cells undergo is called
a. | replication. | b. | the cell cycle. | c. | interphase. | d. | mitosis. |
|
Modified True/False
Indicate whether the statement is true or
false. If false, change the identified word or phrase to make the statement true.
|
|
|
25.
|
Plants use energy from the sun to produce carbon dioxide and sugars.
_________________________
|
|
|
26.
|
A heterotroph is an organism that cannot make its own food.
_________________________
|
|
|
27.
|
Photosynthesis and respiration form a cycle that keeps the levels of
water and carbon dioxide fairly constant in the atmosphere. _________________________
|
|
|
28.
|
The raw materials for respiration are the opposite of the end products
for photosynthesis. _________________________
|
|
|
29.
|
When muscle cells run low on oxygen, lactic acid fermentation takes
place. _________________________
|
|
|
30.
|
A cell makes a copy of its DNA during the stage of the cell cycle called
mitosis. _________________________
|
|
|
31.
|
Cancerous cells grow in an abnormal way. _________________________
|
|
|
32.
|
A mutation is a mass of abnormal cells that develops when cancerous cells
divide and grow uncontrollably. _________________________
|
|
|
33.
|
Radiation is more harmful to normal cells than to cancerous cells.
_________________________
|