This is practice for my final exam. If some people can answer a few of these i would appreciate it because i want to compare my answers with other peoples. I need a good Grade on this test : /
1. Which of the following terms best describes the scientific method?
A. process
B. event
C. communication
D. sequential
2. Science
A. answers questions concerning values and morals.
B. creates theories and laws that are always true.
C. is a process used to arrive at a solution to a problem.
D. has all of the answers to the problems that plague mankind.
3. The idea that living things only originate from other living things is
A. the theory of spontaneous generation.
B. the endosymbiotic theory.
C. Oparin and Haldane's hypothesis.
D. the theory of biogenesis.
4. Select the level of biological organization that represents the correct order from simple to more complex.
A. ecosystem > cell > organism
B. organism > organ system > cell
C. cell > atom > molecule
D. cell > ecosystem > biosphere
E. atom > biome > population
5. Jason was on a camping trip in Wayne National Forest last weekend. He
drank some untreated water from a stream and became violently ill a few hours later. Jason believed the untreated water made him ill. Jason has
A. made an observation.
B. formed a hypothesis.
C. tested a hypothesis.
D. identified a control group.
E. passed away from the illness.
6. Resolution refers to
A. Light intensity
B. The ability to see fine detail
C. Magnification
D. Movement of the stage
7. A scientific theory is
A. a guess as to why things occur.
B. always correct.
C. a broad statement that ties together many facts.
D. easily changed.
8 Reproduction is
A. a generative process.
B. a responsive process.
C. a control process.
D. a metabolic process.
9. A protein that has had its physical and chemical properties changed is said to be
A. denatured.
B. dysfunctional.
C. hydrolyzed.
D. saturated.
10. The smallest particle of an element that still retains the properties of that element is a(n)
A. atom.
B. proton.
C. electron.
D. element.
11. A scale used to indicate the strength of an acid or base is called a ____ scale.
A. thermodynamic
B. aquatic
C. pH
D. reduction
12. The part of an atom without a charge is a(n)
A. ion.
B. neutron.
C. electron.
D. molecule.
13. When a pencil falls from a tabletop to the floor
A. kinetic energy is converted to potential energy.
B. potential energy is converted to kinetic energy.
C. energy is created.
D. energy is destroyed.
14. Chemical bonds hold molecules together. _____ bonds are formed between two atoms when their outer orbitals overlap and a pair or pairs of electrons are shared.
A. Covalent
B. Ionic
C. Hydrogen
D. Peptide
E. Pepsin
15. All organic compounds contain
A. carbon
B. hydrogen
C. oxygen
D. all of the above
E. A & C only
16. A liquid with a pH of 2
A. is a strong acid.
B. has a high H+ concentration
C. has a high OH- concentration
D. A & B only
E. A & C only
17. Which is not a pure substance?
A. the compound sugar
B. the element oxygen
C. a mixture of milk and honey
D. the compound table salt
18. I this kind of chemical reaction, two molecules interact, resulting in the formation of a molecule of water and a new larger product.
A. Hydrolysis
B. Dehydration synthesis
C. Phosphorylation
D. Acid-base reaction
19. Which of the following is an acid?
A. HCl
B. NaOH
C. KOH
D. CaCO3
20. The name of this functional, -NH2, is
A. amino.
B. alcohol.
C. carboxylic acid.
D. aldehyde.
21. Which is not a polymer?
A. Insulin
B. DNA
C. Fatty acid
D. RNA
22. An outside source of energy (ATP) is required for
A. osmosis.
B. diffusion.
C. active transport.
D. None of these answers is true.
23. For diffusion to occur ____ is necessary.
A. a concentration gradient
B. a differentially permeable membrane
C. temperature above 0?C
D. a carrier molecule
24. Solution "A" has a solute concentration of 10% while solution "B" has a solvent concentration of 80%. If they are separated by a selectively permeable membrane
A. the net direction of water movement will be from solution "A" to solution "B".
B. the net direction of water movement will be from solution "B" to solution "A".
C. there will be no net movement of water.
D. the system is in dynamic equilibrium to begin with.
25. Of which of the following would NOT be associated with an animal plasma membrane.
A. protein
B. cellulose - cell wall
C. cholesterol
D. phospholipids
E. none of the above, they would all be found
26. Of which of the following transport mechanisms is the movement of molecules against the concentration gradient, from an area of low to higher concentration?
A. active transport
B. osmosis
C. diffusion
D. facilitated diffusion
E. phagocytosis
27. The Modern Cell Theory was deve
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