,Chapter 1: Exploring Life and Science rr rr rr rr rr
1. Which of the following is NOT a characteristic common to all living organisms?
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A. Organization
B. Ability to respond to stimuli rr rr rr rr
C. Ability to fly rr rr
D. Reproduction r
Answer: C
r rr
2. What is the smallest structural and functional unit of an organism?
rr rr rr rr rr rr rr rr rr rr
A. Atom
B. Molecule
C. Cell
D. Tissue rr
Answer:C r
3. Biology is best defined as: rr rr rr rr
A. The study of human behavior
rr rr rr rr
B. The study of living organisms and their environments
rr rr rr rr rr rr rr
C. The study of plants only
rr rr rr rr
D. The study of chemical reactions
rr rr rr rr rr
Answer: B rr
4. Which level of organization comes immediately after molecules?
rr rr rr rr rr rr rr
A. Atoms
B. Cells
C. Tissues
D. Organs
Answer:B
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5. True or False: Bacteria are multicellular organisms. A
rr rr rr rr rr rr rr
nswer: False rr
6. What is a tissue? rr rr rr
A. A single cell
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B. A group of similar cells that perform a particular function
rr rr rr rr rr rr rr rr rr
C. A collection of different organs
rr rr rr rr
D. Anentireorganism
r r rr
Answer: B rr
7. The brain and spinal cord are examples of which level of organization?
rr rr rr rr rr rr rr rr rr rr rr
A. Tissue
B. Organ
,C. Organ system rr
D. Organism r
Answer: C
r rr
8. All members of one species in a particular area belong to a:
rr rr rr rr rr rr rr rr rr rr rr
A. Community
B. Population
C. Ecosystem
D. Biosphere r
Answer: B
r rr
9. True or False: The biosphere includes all of Earth's ecosystems collectively. An
rr rr rr rr rr rr rr rr rr rr rr
swer: True rr
10. What is energy defined as? rr rr rr rr
A. The capacity to do work
rr rr rr rr
B. A type of molecule
rr rr rr
C. A living organism
rr rr
D. Achemicalreaction
r r rr
Answer: A rr
11. Which process do plants use to convert solar energy into chemical energy?
rr rr rr rr rr rr rr rr rr rr rr
A. Respiration
B. Photosynthesis
C. Metabolism
D. Homeostasis r
Answer: B
r rr
12. Metabolism is: rr
A. The death of an organism
rr rr rr rr
B. The sum of all chemical reactions in a cell or organism
rr rr rr rr rr rr rr rr rr rr
C. A type of reproduction
rr rr rr
D. A form of energy
rr rr rr rr
Answer: B rr
13. True or False: Humans acquire energy by eating food. A
rr rr rr rr rr rr rr rr rr
nswer: True rr
14. What is the ultimate source of energy for most life on Earth?
rr rr rr rr rr rr rr rr rr rr rr
A. The moon rr
B. The sun rr
C. Wind
D. Water rr
Answer:B r
15. Homeostasis refers to: rr rr
, A. Growth and development rr rr
B. Maintaining a constant internal environment rr rr rr rr
C. Reproduction
D. Evolution r
Answer: B
r rr
16. Normal human body temperature typically ranges between:
rr rr rr rr rr rr
A. 20-25°C
B. 30-35°C
C. 36.5-37.5°C
D. 40-45°C
Answer: C rr
17. True or False: The digestive system plays no role in maintaining homeostasis. An
rr rr rr rr rr rr rr rr rr rr rr rr
swer: False
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18. Which systems work together to maintain body temperature?
rr rr rr rr rr rr rr
A. Cardiovascular and nervous systems rr rr rr
B. Only the skeletal system
rr rr rr
C. Only the respiratory system
rr rr rr
D. None of the aboverr rr rr rr
Answer: A rr
19. Response to stimuli in humans often involves: rr rr rr rr rr rr
A. Movement
B. Complete stillness rr
C. Sleep
D. Reproduction r
Answer: A
r rr
20. True or False: Plants can respond to external stimuli. A
rr rr rr rr rr rr rr rr rr
nswer: True
rr
21. DNA stands for: rr rr
A. Deoxyribonitrogen acid rr
B. Deoxyribonucleic acid rr
C. Dinitrogen acid rr
D. Doublenucleusacid r r rr
Answer: B rr
22. Genes are: rr
A. Large organisms rr
B. Short sequences of hereditary material
rr rr rr rr
C. Types of cells rr rr
D. Energy molecules rr
1. Which of the following is NOT a characteristic common to all living organisms?
rr rr rr rr rr rr rr rr rr rr rr rr
A. Organization
B. Ability to respond to stimuli rr rr rr rr
C. Ability to fly rr rr
D. Reproduction r
Answer: C
r rr
2. What is the smallest structural and functional unit of an organism?
rr rr rr rr rr rr rr rr rr rr
A. Atom
B. Molecule
C. Cell
D. Tissue rr
Answer:C r
3. Biology is best defined as: rr rr rr rr
A. The study of human behavior
rr rr rr rr
B. The study of living organisms and their environments
rr rr rr rr rr rr rr
C. The study of plants only
rr rr rr rr
D. The study of chemical reactions
rr rr rr rr rr
Answer: B rr
4. Which level of organization comes immediately after molecules?
rr rr rr rr rr rr rr
A. Atoms
B. Cells
C. Tissues
D. Organs
Answer:B
rr r
5. True or False: Bacteria are multicellular organisms. A
rr rr rr rr rr rr rr
nswer: False rr
6. What is a tissue? rr rr rr
A. A single cell
rr rr
B. A group of similar cells that perform a particular function
rr rr rr rr rr rr rr rr rr
C. A collection of different organs
rr rr rr rr
D. Anentireorganism
r r rr
Answer: B rr
7. The brain and spinal cord are examples of which level of organization?
rr rr rr rr rr rr rr rr rr rr rr
A. Tissue
B. Organ
,C. Organ system rr
D. Organism r
Answer: C
r rr
8. All members of one species in a particular area belong to a:
rr rr rr rr rr rr rr rr rr rr rr
A. Community
B. Population
C. Ecosystem
D. Biosphere r
Answer: B
r rr
9. True or False: The biosphere includes all of Earth's ecosystems collectively. An
rr rr rr rr rr rr rr rr rr rr rr
swer: True rr
10. What is energy defined as? rr rr rr rr
A. The capacity to do work
rr rr rr rr
B. A type of molecule
rr rr rr
C. A living organism
rr rr
D. Achemicalreaction
r r rr
Answer: A rr
11. Which process do plants use to convert solar energy into chemical energy?
rr rr rr rr rr rr rr rr rr rr rr
A. Respiration
B. Photosynthesis
C. Metabolism
D. Homeostasis r
Answer: B
r rr
12. Metabolism is: rr
A. The death of an organism
rr rr rr rr
B. The sum of all chemical reactions in a cell or organism
rr rr rr rr rr rr rr rr rr rr
C. A type of reproduction
rr rr rr
D. A form of energy
rr rr rr rr
Answer: B rr
13. True or False: Humans acquire energy by eating food. A
rr rr rr rr rr rr rr rr rr
nswer: True rr
14. What is the ultimate source of energy for most life on Earth?
rr rr rr rr rr rr rr rr rr rr rr
A. The moon rr
B. The sun rr
C. Wind
D. Water rr
Answer:B r
15. Homeostasis refers to: rr rr
, A. Growth and development rr rr
B. Maintaining a constant internal environment rr rr rr rr
C. Reproduction
D. Evolution r
Answer: B
r rr
16. Normal human body temperature typically ranges between:
rr rr rr rr rr rr
A. 20-25°C
B. 30-35°C
C. 36.5-37.5°C
D. 40-45°C
Answer: C rr
17. True or False: The digestive system plays no role in maintaining homeostasis. An
rr rr rr rr rr rr rr rr rr rr rr rr
swer: False
rr
18. Which systems work together to maintain body temperature?
rr rr rr rr rr rr rr
A. Cardiovascular and nervous systems rr rr rr
B. Only the skeletal system
rr rr rr
C. Only the respiratory system
rr rr rr
D. None of the aboverr rr rr rr
Answer: A rr
19. Response to stimuli in humans often involves: rr rr rr rr rr rr
A. Movement
B. Complete stillness rr
C. Sleep
D. Reproduction r
Answer: A
r rr
20. True or False: Plants can respond to external stimuli. A
rr rr rr rr rr rr rr rr rr
nswer: True
rr
21. DNA stands for: rr rr
A. Deoxyribonitrogen acid rr
B. Deoxyribonucleic acid rr
C. Dinitrogen acid rr
D. Doublenucleusacid r r rr
Answer: B rr
22. Genes are: rr
A. Large organisms rr
B. Short sequences of hereditary material
rr rr rr rr
C. Types of cells rr rr
D. Energy molecules rr
