Review of MOCT Review of MOCT QuestionsQuestions

1. A scientist performs a series of 1. A scientist performs a series of experiments to confirm an idea regarding experiments to confirm an idea regarding cellular metabolism. The results of the cellular metabolism. The results of the experiment support the scientist’s initial experiment support the scientist’s initial idea, and after conferring with idea, and after conferring with colleagues, the scientist discovers that colleagues, the scientist discovers that evidence from many experiments has evidence from many experiments has supported the same idea. This idea supported the same idea. This idea could now be considered a(n) ___.could now be considered a(n) ___.

a. theory a. theory b. hypothesis b. hypothesis c. observationc. observationd. controld. control

2. 5.4 km = ___________ cm2. 5.4 km = ___________ cm

a. 540a. 540

b. 5400b. 5400

c. 54,000c. 54,000

d. 540,000d. 540,000

3.What topic falls under the study of 3.What topic falls under the study of biology?biology?

a. The chemicals in fuela. The chemicals in fuel

b. The makeup of the atmosphereb. The makeup of the atmosphere

c. Rocks found in a riverbedc. Rocks found in a riverbed

d. The digestive system of an earthwormd. The digestive system of an earthworm

4. Which of the following is an observation?4. Which of the following is an observation?

a. You record the air temperature every day a. You record the air temperature every day for a weekfor a week

b. You propose that a cold front is b. You propose that a cold front is approachingapproaching

c. You hypothesize that the temperature will c. You hypothesize that the temperature will increase tomorrowincrease tomorrow

d. You conclude that the season is changingd. You conclude that the season is changing

5. A controlled experiment allows the 5. A controlled experiment allows the scientist to isolate and testscientist to isolate and test

a. A conclusiona. A conclusion

b. A mass of informationb. A mass of information

c. Several variablesc. Several variables

d. A single variabled. A single variable

6. An organism’s niche is6. An organism’s niche is

a. The way the organism uses the range of a. The way the organism uses the range of physical & biological conditions in which it physical & biological conditions in which it liveslives

b. All the physical & biological factors in the b. All the physical & biological factors in the organism’s environmentorganism’s environment

c. The range of temperatures that the c. The range of temperatures that the organism needs to surviveorganism needs to survive

d. A full description of the place an organism d. A full description of the place an organism liveslives

7. The total amount of living tissue within a 7. The total amount of living tissue within a given trophic level is called thegiven trophic level is called the

a. Organism massa. Organism mass

b. Trophic massb. Trophic mass

c. Energy massc. Energy mass

d. Biomassd. Biomass

8. The series of predictable changes that 8. The series of predictable changes that occurs in a community over time is called occurs in a community over time is called

a. Population growtha. Population growth

b. Ecological successionb. Ecological succession

c. Climax communityc. Climax community

d. Climate changed. Climate change

9. Only 10% of the energy stored in an 9. Only 10% of the energy stored in an organism can be passed on to the next organism can be passed on to the next trophic level. Of the remaining energy, trophic level. Of the remaining energy, some is used for the organism’s life some is used for the organism’s life processes, and the rest isprocesses, and the rest is

a. Used in reproductiona. Used in reproduction

b. Stored as body tissueb. Stored as body tissue

c. Stored as fatc. Stored as fat

d. Eliminated as heatd. Eliminated as heat

10. The simplest grouping of more than one 10. The simplest grouping of more than one kind of organism in the biosphere iskind of organism in the biosphere is

a. A populationa. A population

b. A communityb. A community

c. An ecosystemc. An ecosystem

d. A speciesd. A species

11. In a logistic growth curve, exponential 11. In a logistic growth curve, exponential growth is the phase in which the growth is the phase in which the populationpopulation

a. Reaches carrying capacitya. Reaches carrying capacity

b. Grows quickly and few animals are dyingb. Grows quickly and few animals are dying

c. Growth begins to slow downc. Growth begins to slow down

d. Growth stopsd. Growth stops

12. Which is an abiotic factor that might 12. Which is an abiotic factor that might affect the life of a water-dwelling affect the life of a water-dwelling organism?organism?

a. Algae growing on surface of watera. Algae growing on surface of water

b. Bacterial population in waterb. Bacterial population in water

c. Predator populationc. Predator population

d. Speed of water currentd. Speed of water current

13. One of the greatest threats today to 13. One of the greatest threats today to biological diversity is biological diversity is

a. Old-growth forestsa. Old-growth forests

b. Ozone depletionb. Ozone depletion

c. Habitat destructionc. Habitat destruction

d. Monocultured. Monoculture

14. Which is NOT a pathway by which plants 14. Which is NOT a pathway by which plants obtain atmospheric nitrogen?obtain atmospheric nitrogen?

a. Chemical fertilizersa. Chemical fertilizers

b. Lightningb. Lightning

c. Photosynthesisc. Photosynthesis

d. Symbiotic bacteriad. Symbiotic bacteria

15. Isotopes are atoms of the same element 15. Isotopes are atoms of the same element with the same number of protons andwith the same number of protons and

a. A different number of electronsa. A different number of electrons

b. A different number of moleculesb. A different number of molecules

c. A different number of neutronsc. A different number of neutrons

d. The same number of neutronsd. The same number of neutrons

16. When salt is dissolved in water, water is 16. When salt is dissolved in water, water is thethe

a. Reactanta. Reactant

b. Solutionb. Solution

c. Solutec. Solute

d. Solventd. Solvent

17. A monosaccharide is a17. A monosaccharide is a

a. Carbohydratea. Carbohydrate

b. Lipidb. Lipid

c. Nucleic acidc. Nucleic acid

d. Proteind. Protein

18. Amino acids are the building blocks of 18. Amino acids are the building blocks of which macromolecule?which macromolecule?

a. Carbohydratea. Carbohydrate

b. DNAb. DNA

c. Lipidc. Lipid

d. Proteind. Protein

19. Photosynthesis uses sunlight to convert 19. Photosynthesis uses sunlight to convert water and carbon dioxide intowater and carbon dioxide into

a. Oxygena. Oxygen

b. High energy sugarsb. High energy sugars

c. ATP and oxygenc. ATP and oxygen

d. Oxygen and high-energy sugarsd. Oxygen and high-energy sugars

20. The process by which a cell divides into 20. The process by which a cell divides into two daughter cells is calledtwo daughter cells is called

a. Cell divisiona. Cell division

b. Metaphaseb. Metaphase

c. Interphasec. Interphase

d. Mitosisd. Mitosis

21. Algal cells are placed in an isotonic 21. Algal cells are placed in an isotonic solution. Additional amounts of solutes are solution. Additional amounts of solutes are slowly added to the solution. What slowly added to the solution. What happens to the cells?happens to the cells?

a. They will begin to swella. They will begin to swell

b. They will burstb. They will burst

c. They will stay the samec. They will stay the same

d. They will shrinkd. They will shrink

22. Which of the following is released during 22. Which of the following is released during cellular respiration?cellular respiration?

a. Oxygena. Oxygen

b. Airb. Air

c. Energyc. Energy

d. Lactic Acidd. Lactic Acid