Chapter 1: Exploring Life and Science
1. Which of the**following**is**NOT**a**characteristic**common**to** all**living**organisms?
!! !!
A. Organization
B. Ability**to**respond**to**stimuli
C. Ability**to**fly
D. Reproduction
**Answer:**C
2. What**is**the**smallest**structural** and**functional**unit** of**an**organism?
A. Atom
B. Molecule
C. Cell
D. Tissue**
Answer:**C
3. Biology**is**best**defined**as:
A. The**study** of**human**behavior
B. The**study** of**living**organisms**and**their**environments
C. The**study** of**plants** only
D. The**study**of**chemical**reaction
s**Answer:**B
4. Which**level** of**organization**comes**immediately** after**molecules?
A. Atoms
B. Cells
C. Tissues
D. Organs
**Answer:**
B
5. True**or**False:**Bacteria**are**multicellular**organism
s.**Answer:**False
6. What**is**a**tissue?
A. A**single**cell
B. A**group** of**similar**cells**that**perform** a**particular**function
C. A**collection**of**different**organs
D. An**entire**organism
**Answer:**B
7. The**brain**and**spinal**cord**are** examples**of**which**level** of**organization?
A. Tissue
B. Organ
,C. Organ**system
D. Organism
**Answer:**C
8. All**members**of**one**species**in** a**particular**area**belong**to** a:
A. Community
B. Population
C. Ecosystem
D. Biosphere
**Answer:**B
9. True**or**False:**The**biosphere**includes**all**of**Earth's**ecosystems**collectivel
y.**Answer:**True
10. What**is**energy**defined** as?
A. The**capacity**to**do** work
B. A**type** of**molecule
C. A**living**organism
D. A**chemical**reaction
**Answer:**A
11. Which**process**do**plants**use**to**convert**solar** energy**into**chemical**energy?
A. Respiration
B. Photosynthesis
C. Metabolism
D. Homeostasis
**Answer:**B
12. Metabolism**is:
A. The**death**of**an**organism
B. The**sum** of**all**chemical**reactions**in** a**cell**or**organism
C. A**type** of**reproduction
D. A**form**of**energy
**Answer:**B
13. True**or**False:**Humans**acquire**energy**by**eating**foo
d.**Answer:**True
14. What**is**the**ultimate**source**of**energy**for**most**life** on**Earth?
A. The** moon
B. The**sun
C. Wind
D. Water**
Answer:**B
15. Homeostasis**refers**to:
,A. Growth** and**development
B. Maintaining** a**constant**internal**environment
C. Reproduction
D. Evolution
**Answer:**B
16. Normal**human**body**temperature**typically**ranges**between:
A. 20-25°C
B. 30-35°C
C. 36.5-37.5°C
D. 40-45°C
Answer:**C
17. True**or**False:**The**digestive**system**plays**no**role**in**maintaining**homeostas
is.**Answer:**False
18. Which**systems**work**together**to**maintain**body**temperature?
A. Cardiovascular** and**nervous**systems
B. Only**the**skeletal**system
C. Only**the**respiratory**system
D. None**of**the**above
**Answer:**A
19. Response**to**stimuli**in**humans**often**involves:
A. Movement
B. Complete**stillness
C. Sleep
D. Reproduction
**Answer:**A
20. True**or**False:**Plants**can**respond**to**external**stimu
li.**Answer:**True
21. DNA**stands**for:
A. Deoxyribonitrogen** acid
B. Deoxyribonucleic** acid
C. Dinitrogen** acid
D. Double**nucleus**acid
**Answer:**B
22. Genes** are:
A. Large**organisms
B. Short**sequences**of**hereditary**material
C. Types**of**cells
D. Energy**molecules
, Answer:**B
23. True**or**False:**Mutations**are**always**harmful**to**organism
s.**Answer:**False
24. Before**reproduction** occurs,**DNA**is:
A. Destroyed
B. Replicated
C. Eliminated
D. Frozen*
*Answer:**
B
25. Evolution**is**best**defined** as:
A. The**process**by**which** a**population**changes**over**time
B. The**growth** of**an**individual
C. The**death**of**species
D. A**single**mutation
**Answer:**A
26. Natural**selection**results**in:
A. Random**changes
B. Adaptation**to**the** environment
C. Elimination** of**all**species
D. Cessation**of**reproduction
**Answer:**B
27. True**or**False:**Humans**living**at**high**elevations**in**Tibet**show**adaptations**to**l
ow** oxygen** environments.
Answer:**True
28. The**EPSA1**gene**in**Tibetans**affects:
A. Height
B. Hemoglobin**production
C. Skin**color
D. Eye**color
**Answer:**B
29. Which**domain**contains**prokaryotes**that**lack**a**nucleus?
A. Eukarya** only
B. Bacteria** and**Archaea
C. Plantae
D. Animalia
**Answer:**B
1. Which of the**following**is**NOT**a**characteristic**common**to** all**living**organisms?
!! !!
A. Organization
B. Ability**to**respond**to**stimuli
C. Ability**to**fly
D. Reproduction
**Answer:**C
2. What**is**the**smallest**structural** and**functional**unit** of**an**organism?
A. Atom
B. Molecule
C. Cell
D. Tissue**
Answer:**C
3. Biology**is**best**defined**as:
A. The**study** of**human**behavior
B. The**study** of**living**organisms**and**their**environments
C. The**study** of**plants** only
D. The**study**of**chemical**reaction
s**Answer:**B
4. Which**level** of**organization**comes**immediately** after**molecules?
A. Atoms
B. Cells
C. Tissues
D. Organs
**Answer:**
B
5. True**or**False:**Bacteria**are**multicellular**organism
s.**Answer:**False
6. What**is**a**tissue?
A. A**single**cell
B. A**group** of**similar**cells**that**perform** a**particular**function
C. A**collection**of**different**organs
D. An**entire**organism
**Answer:**B
7. The**brain**and**spinal**cord**are** examples**of**which**level** of**organization?
A. Tissue
B. Organ
,C. Organ**system
D. Organism
**Answer:**C
8. All**members**of**one**species**in** a**particular**area**belong**to** a:
A. Community
B. Population
C. Ecosystem
D. Biosphere
**Answer:**B
9. True**or**False:**The**biosphere**includes**all**of**Earth's**ecosystems**collectivel
y.**Answer:**True
10. What**is**energy**defined** as?
A. The**capacity**to**do** work
B. A**type** of**molecule
C. A**living**organism
D. A**chemical**reaction
**Answer:**A
11. Which**process**do**plants**use**to**convert**solar** energy**into**chemical**energy?
A. Respiration
B. Photosynthesis
C. Metabolism
D. Homeostasis
**Answer:**B
12. Metabolism**is:
A. The**death**of**an**organism
B. The**sum** of**all**chemical**reactions**in** a**cell**or**organism
C. A**type** of**reproduction
D. A**form**of**energy
**Answer:**B
13. True**or**False:**Humans**acquire**energy**by**eating**foo
d.**Answer:**True
14. What**is**the**ultimate**source**of**energy**for**most**life** on**Earth?
A. The** moon
B. The**sun
C. Wind
D. Water**
Answer:**B
15. Homeostasis**refers**to:
,A. Growth** and**development
B. Maintaining** a**constant**internal**environment
C. Reproduction
D. Evolution
**Answer:**B
16. Normal**human**body**temperature**typically**ranges**between:
A. 20-25°C
B. 30-35°C
C. 36.5-37.5°C
D. 40-45°C
Answer:**C
17. True**or**False:**The**digestive**system**plays**no**role**in**maintaining**homeostas
is.**Answer:**False
18. Which**systems**work**together**to**maintain**body**temperature?
A. Cardiovascular** and**nervous**systems
B. Only**the**skeletal**system
C. Only**the**respiratory**system
D. None**of**the**above
**Answer:**A
19. Response**to**stimuli**in**humans**often**involves:
A. Movement
B. Complete**stillness
C. Sleep
D. Reproduction
**Answer:**A
20. True**or**False:**Plants**can**respond**to**external**stimu
li.**Answer:**True
21. DNA**stands**for:
A. Deoxyribonitrogen** acid
B. Deoxyribonucleic** acid
C. Dinitrogen** acid
D. Double**nucleus**acid
**Answer:**B
22. Genes** are:
A. Large**organisms
B. Short**sequences**of**hereditary**material
C. Types**of**cells
D. Energy**molecules
, Answer:**B
23. True**or**False:**Mutations**are**always**harmful**to**organism
s.**Answer:**False
24. Before**reproduction** occurs,**DNA**is:
A. Destroyed
B. Replicated
C. Eliminated
D. Frozen*
*Answer:**
B
25. Evolution**is**best**defined** as:
A. The**process**by**which** a**population**changes**over**time
B. The**growth** of**an**individual
C. The**death**of**species
D. A**single**mutation
**Answer:**A
26. Natural**selection**results**in:
A. Random**changes
B. Adaptation**to**the** environment
C. Elimination** of**all**species
D. Cessation**of**reproduction
**Answer:**B
27. True**or**False:**Humans**living**at**high**elevations**in**Tibet**show**adaptations**to**l
ow** oxygen** environments.
Answer:**True
28. The**EPSA1**gene**in**Tibetans**affects:
A. Height
B. Hemoglobin**production
C. Skin**color
D. Eye**color
**Answer:**B
29. Which**domain**contains**prokaryotes**that**lack**a**nucleus?
A. Eukarya** only
B. Bacteria** and**Archaea
C. Plantae
D. Animalia
**Answer:**B
