Name ____________________________ Date _________________ Period _____________
QUIZ: Chemistry & Energy for Life
Matching: Match the correct definition to its proper term.
_____ 1. Carbohydrates
a. Special proteins that speed up the rate of
chemical reactions in living things.
_____ 2. Guard Cell
b. An environment with the presence of oxygen.
_____ 3. Anaerobic
c. Specialized cells that control the opening and
closing of the pores (stomata) on the surface of a
leaf.
______ 4. Respiration
d. Large, complex organic molecules that contain
the genetic instructions needed to carry out
cellular life processes.
_____ 5. Lipids
e. Compounds that the body can break down into
simple sugars, like glucose to use for energy.
_____ 6. Enzymes
f. The process by which some organisms are able to
capture light energy to produce sugar from
carbon dioxide and water.
_____ 7. Proteins
g. An environment where there is little or no
oxygen present.
_____ 8. Aerobic
h. Any one of a group of organic compounds that
include oils, fats, and waxes.
_____ 9. Photosynthesis
i. The process by which the chemical bond energy
stored in nutrients like glucose is released to
produce ATP in cells.
_____ 10. Nucleic acids
j. Organic compounds composed of sequences of
amino acids.
11. Which cell structure is mainly responsible for releasing energy from food molecules in some
single-celled organisms?
1. ribosome
2. chloroplast
3. cell membrane
4. mitochondria
12. Which words best complete the lettered blanks in the two sentences below?
Organic compounds, such as proteins and carbohydrates, are too A to diffuse into cells.
Proteins are digested into B and carbohydrates are digested into C.
1.
2.
3.
4.
A-large, B-simple sugars, C-amino acids
A-small, B-simple sugars, C-amino acids
A-large, B-amino acids, C-simple sugars
A-small, B-amino acids, C-simple sugars
13. Living organisms must be able to obtain materials, change the materials into new forms,
remove poisons, and move needed material from one place to another. Many of these activities
directly require
1.
2.
3.
4.
energy released from ATP
carbohydrates formed from receptor molecules
the synthesis of DNA
the breakdown of energy-rich inorganic molecules
14. A biological process that occurs in plants is represented below.
D
water
A
C
B
Which row in the chart below identifies the letter substances in this process?
Row
1
2
3
4
A
enzymes
carbon dioxide
glucose
oxygen
B
oxygen
glucose
enzymes
glucose
C
carbon dioxide
oxygen
oxygen
carbon dioxide
D
glucose
enzymes
carbon dioxide
enzymes
15. The enzyme amylase will affect the breakdown of carbohydrates, but it will not affect the
breakdown of proteins. The ability of an enzyme molecule to interact with specific molecules is
most directly determined by the
1. shapes of the molecules involved
2. number of molecules involved
3. sequence of bases present in ATP
4. amount of glucose present in the cell
16. The diagram below represents a biological process.
A
B
Inorganic molecules
Organic molecules
Which set of molecules is best represented by letters A and B?
1. A: oxygen and water
B: glucose
3. A: carbon dioxide and water
B: glucose
2. A: glucose
B: carbon dioxide and water
4. A: glucose
B: oxygen and water
17. The diagram represents a plant cell. Which process takes place in structure A?
This Photo by Unknown Author is
1. cellular respiration
3. digestion of fats
2. heterotrophic nutrition
4. protein synthesis
18. Name an organic molecule that is used during cellular respiration in the mitochondria
________________________________
19. Organelles carry out specific processes involved in chemical reactions. In the chart,
organelles are given. For each, identify a process involving chemical reactions that occur there.
Describe one specific way each process is important to the functioning of the organism.
Organelle
Process Involving Chemical
Reactions That Occur in the
Organelle
How the Process Is Important to the
Functioning of the Organism
mitochondria
chloroplast
ribosome
20. The accompanying diagram represents a change in guard cells that open and close pores in
a plant.
This change directly helps to regulate what? ________________________________