文档介绍：Chapter 6: The Chemistry of Life
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element would need to be removed from the molecule in Figure to make it unsaturated?
A) hydrogen B) oxygen
C) carbon D) phosphorus
2. Which of the atoms pictured in Figure below is most likely to form an ion?
A) C
B) O
C) they are all equally likely to form an ion
D) Na
3. _____ represents a formula for a pound.
A) P B) H
C) C D) H2O
4. Which of the following is a chemical reaction?
A) mixing salt and sugar in the same container
B) picking up iron filings with a
C) tearing paper into strips
D) burning paper
5. Carbon-12, carbon-13, and carbon-14 are _____.
A) polymers
B) isotopes
C) radioisotopes
D) macromolecules
6. An unsaturated lipid contains _____.
A) only one fatty acid
B) double bonds
C) more oxygen than hydrogen
D) ionic bonds
7. A chlorine atom es a chloride ion when it _____.
A) loses a proton B) loses an electron
C) gains a neutron D) gains an electron
8. Which of the following categories includes all others in the list?
A). haride D). carbohydrate
B). haride E). haride
C). starch
9. Unlike carbohydrates and fats, proteins contain _____.
A) nitrogen B) carbon
C) hydrogen D) oxygen
10. Substances such as lemon and tomato, with a pH __________, are considered acidic.
A) equal to 14 B) above 7
C) below 7 D) equal to 0
11. an in a mammal is responsible for storing glycogen?
A) lungs B) brain
C) liver D) bladder
12. Which of the following statements concerning unsaturated fats is true?
A). They are mon in animals than in plants.
B). They have double bonds in the carbon chains of their fatty acids.
C). They generally solidify at room temperature.
D). They contain more hydrogen than do saturated fats having the same number of carbon atoms.
E). They have fewer fatty acid molecules per fat molecule.
13. A polar molecule is