forum questions and random retouching

1. The reactive properties or chemical behavior of an atom depend on the number of ____. 

• a. Valence shells in the atom 

• b. Hybridized orbitals in the atom

• c. Orbitals found in the atom 

• d. Electrons in each orbital of the atom 

2. Put carbon, nitrogen, and oxygen in order of increasing number of protons that elements have. 

• a. Carbon, Oxygen, Nitrogen 

• b. Nitrogen, Carbon, Oxygen 

• c. Oxygen, Nitrogen, Carbon 

• e. Carbon, Nitrogen, Oxygen 

• d. Nitrogen, Oxygen, Carbon 

3. Compared to cells in the nose of a mouse in Missouri, the cells in the nose of an arctic fox in Alaska will most likely have an increased concentration of which of these molecules? (this is a silly question I literally don't know but it was on the thing)

• a. Potassium channel proteins 

• b. Saturated phospholipids 

• c. Water channels (aquaporin proteins) 

• d. Unsaturated phospholipid (cholesterol)

• e. Peptide and ester 

4. What is the reason why hydrocarbons are not soluble in water? 

• a. The majority of their bonds are nonpolar covalent carbon-to-hydrogen linkages

• b. They are hydrophilic

• c. They exhibit considerable molecular complexity and diversity.

• d. The majority of their bonds are polar covalent carbon-to-hydrogen linkages

• e. They are lighter than water

5. Vinegar is a solution of dilute acetic acid with a pH of ~2.5. Wine typically has a pH of 3.5. Which of the following statements is true? 8) ______ 

• a. Vinegar is acidic, wine is basic

• b. Wine is 100 times more acidic than vinegar 

• c. Vinegar is 10 times more acidic than wine

• d. Vinegar is 100 times more acidic than wine

• e. Wine is 10 times more acidic than vinegar 

6. Ocean temperatures and coastal land areas have more stable temperatures than inland areas because large bodies of water can absorb a large amount of heat from the sun in the daytime yet only warm a few degrees. What property of water explains this phenomenon? 

• a. Low density in its solid form

• b. High cohesion

• c. High specific heat

• d. High surface tension

• e. High heat of vaporization

7. What property of water best explains why some insects can stand and walk on the surface of water? 

• a. Water has a high specific heat capacity

• b. Water has a high surface tension

• c. Liquid water is denser than solid water

• d. Water has high levels of evaporative cooling

• e. Water has high cohesion

8. If all the lysosomes within a cell suddenly ruptured, what would be the most likely result? 

• a. The macromolecules in the cytosol would begin to break down

• b. The mitochondria and chloroplasts would divide

• c. There would be no change in cell function

• d. The DNA within mitochondria would break down

• e. More proteins would be made

9. A cell has the following molecules and structures: DNA, plasma membrane, proteins, and Golgi apparatus. This could be a _________ cell. 

• a. Bacteria 

• b. Plant, but not an animal 

• c. Animal, but not a plant 

• d. Plant or animal cell 

• e. Bacteria, plant, or animal 

10. The cytoskeleton is composed of three different filament types. Which of the following is the correct order of these filaments from smallest to largest diameter?

• a. Intermediate filaments, microtubules, microfilaments 

• b. Microfilaments, intermediate filaments, microtubules

• c. Microfilaments, microtubules, intermediate filaments 

• d. Microtubules, intermediate filaments, microfilaments 

• e. Microtubules, microfilaments, intermediate filaments