What factor do you need to multiply by to convert kilometers to micrometers?

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?

1. Glacial mass
2. Sunlight
3. The season
4. Time

2. How many dependent variables can be tested during any single experiment?

1. 4
2. 3
3. 2
4. 1

3. An integrated explanation of numerous hypotheses is known as a ________.

1. Fact
2. Law
3. Control
4. Theory
5. 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?

1. TheDiscussionanalyzes data, whereas theResultsanalyzes the procedure.
2. TheDiscussionanalyzes data, whereas theResultsdisplays data.
3. TheDiscussiondisplays data, whereas theResultsanalyzes the Discussion.
4. 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?

1. 5,383.40 m³
2. 538.34 m³
3. 5,383.40 m²
4. 538.35 m²

6. Why are volumetric measurements defined as a “cubed” unit?

1. Because the typically describe shapes which are cuboidal.
2. Because three different shapes are used to measure one larger shape.
3. Because three individual units are multiplied together.
4. 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?

1. 10^-9
2. 10⁹
3. 10^-6
4. 10⁶

8. What subatomic particles are found in the nucleus?

1. Elecctrons
2. Protons
3. Neutrons
4. Protons and neutrons
5. Protons and electrons

9. Which of the following describes H₂0, NaCl, CO₂, and HCl?

1. All are acids
2. All are gases
3. All are salts
4. All are inorganic molecules

10. Which of the following correctly describes a buffer?

1. A buffer converts an alkaline solution to neutral
2. A buffer converts an acid solution to neutral.
3. A buffer converts alkaline solutions to acid solutions.
4. A buffer converts strong bases or acids to weak bases or acids.

11. Which term does not belong in this list?

1. Acid
2. Vinegar
3. Hydrogen ion donor
4. pH 8
5. Lactic acid

12. The process in which molecules spread randomly from areas of higher concentration to areas of lower concentration is:

1. Filtration
2. Diffusion
3. Exocytosis
4. Osmosis

13. Organize the following solutions from most concentrated to least concentrated: hypertonic, hypotonic, and isotonic.

1. Hypotonic>Hypertonic>Isotonic
2. Hypertonic>Hypotonic>Isotonic
3. Hypertonic>Isotonic>Hypotonic
4. Isotonic>Hypotonic>Hypertonic

14. The rate of diffusion depends on which of the following?

1. The medium
2. The size of the molecule
3. The polarity
4. All of the above
5. A. and C. only

15.All of the following are examples of elements except

1. Oxygen
2. Water
3. Hydrogen
4. Carbon

16. What would happen to a eukaryotic cell, if too much osmotic pressure develops within a cell?

1. The cell would remain the same size, but the internal organelles would become dehydrated
2. The cell would decrease in size, and could collapse.
3. The cell would increase in size, and could lyse.
4. 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.

1. Polar
2. Hydrogen
3. Ionic
4. Covalent

19. Which of the following terms includes all of the chemical reactions that occur within a cell?

1. Cellular respiration
2. Catabolism
3. Redox reactions
4. Metabolism
5. Phosphorylation

20. Within a cell, energy released by electrons is often used to phosphorylate which of the following molecules?

1. ADP
2. ATP
3. Pyruvate ions
4. Oxygen
5. NAD