Question
Total possible points: 100
I.Multiple choice questions. Please bold or underline the correct answer (1point each=50 points)
1. Suppose you conduct an experiment which simulates glacial recession over time. What is the dependent variable in this experiment?
- Glacial mass
- Sunlight
- The season
- Time
2. How many dependent variables can be tested during any single experiment?
- 4
- 3
- 2
- 1
3. An integrated explanation of numerous hypotheses is known as a ________.
- Fact
- Law
- Control
- Theory
- Guess
4. When writing a lab report or a research paper, you need to show what the difference is between the “Results” section and the ”Discussion” section. Which of the following is correct?
- TheDiscussionanalyzes data, whereas theResultsanalyzes the procedure.
- TheDiscussionanalyzes data, whereas theResultsdisplays data.
- TheDiscussiondisplays data, whereas theResultsanalyzes the Discussion.
- TheDiscussiondisplays the procedure, whereas theResultsanalyzes the data.
5. What is the surface area of a football field which is 120.00 yards long and 53.30 yards wide?
- 5,383.40 m3
- 538.34 m3
- 5,383.40 m2
- 538.35 m2
6. Why are volumetric measurements defined as a “cubed” unit?
- Because the typically describe shapes which are cuboidal.
- Because three different shapes are used to measure one larger shape.
- Because three individual units are multiplied together.
- Because the metric system requires volumes to be expressed as cubed units.
7. What factor do you need to multiply by to convert kilometers to micrometers?
- 10-9
- 109
- 10-6
- 106
8. What subatomic particles are found in the nucleus?
- Elecctrons
- Protons
- Neutrons
- Protons and neutrons
- Protons and electrons
9. Which of the following describes H20, NaCl, CO2, and HCl?
- All are acids
- All are gases
- All are salts
- All are inorganic molecules
10. Which of the following correctly describes a buffer?
- A buffer converts an alkaline solution to neutral
- A buffer converts an acid solution to neutral.
- A buffer converts alkaline solutions to acid solutions.
- A buffer converts strong bases or acids to weak bases or acids.
11. Which term does not belong in this list?
- Acid
- Vinegar
- Hydrogen ion donor
- pH 8
- Lactic acid
12. The process in which molecules spread randomly from areas of higher concentration to areas of lower concentration is:
- Filtration
- Diffusion
- Exocytosis
- Osmosis
13. Organize the following solutions from most concentrated to least concentrated: hypertonic, hypotonic, and isotonic.
- Hypotonic>Hypertonic>Isotonic
- Hypertonic>Hypotonic>Isotonic
- Hypertonic>Isotonic>Hypotonic
- Isotonic>Hypotonic>Hypertonic
14. The rate of diffusion depends on which of the following?
- The medium
- The size of the molecule
- The polarity
- All of the above
- A. and C. only
15.All of the following are examples of elements except
- Oxygen
- Water
- Hydrogen
- Carbon
16. What would happen to a eukaryotic cell, if too much osmotic pressure develops within a cell?
- The cell would remain the same size, but the internal organelles would become dehydrated
- The cell would decrease in size, and could collapse.
- The cell would increase in size, and could lyse.
- Nothing, osmotic pressure does not impact the cell.
17. Inthe following chemical reaction, what is carbon dioxide (CO2)?
12 H20 + 6 CO2= 1 glucose molecule + 6 O2
A. substrate
B. product
C. enzyme
D. activation factor
E. independent variable
18. The bond in which two atoms share one or more pairs of electrons is a_________ bond.
- Polar
- Hydrogen
- Ionic
- Covalent
19. Which of the following terms includes all of the chemical reactions that occur within a cell?
- Cellular respiration
- Catabolism
- Redox reactions
- Metabolism
- Phosphorylation
20. Within a cell, energy released by electrons is often used to phosphorylate which of the following molecules?
- ADP
- ATP
- Pyruvate ions
- Oxygen
- NAD