Homework answers / question archive / Irvine Valley College BIO 1 Biology 1/Spring 2008 Quiz 3: Chemistry (Part 1) 1)Which of the following is the simplest organic molecule? water carbon dioxide methane sugar An acid is defined as a substance that, when in water releases H+ ions consumes H+ ions releases OH- ions consumes OH- ions Atoms with the same #of protons but different # of neutrons are called molecules bases ions isotopes With 4 electrons in its outer shell, silicon should bind with                    hydrogens   1 2 4 8 The body uses buffers to take away pain hold pH constant facilitate chemical reactions pick up oxygen Which of the following molecules involves a triple covalent bond? H20 O2 CO2 N2 Covalent bonds involve the sharing of protons

Irvine Valley College BIO 1 Biology 1/Spring 2008 Quiz 3: Chemistry (Part 1) 1)Which of the following is the simplest organic molecule? water carbon dioxide methane sugar An acid is defined as a substance that, when in water releases H+ ions consumes H+ ions releases OH- ions consumes OH- ions Atoms with the same #of protons but different # of neutrons are called molecules bases ions isotopes With 4 electrons in its outer shell, silicon should bind with                    hydrogens   1 2 4 8 The body uses buffers to take away pain hold pH constant facilitate chemical reactions pick up oxygen Which of the following molecules involves a triple covalent bond? H20 O2 CO2 N2 Covalent bonds involve the sharing of protons

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1. 1
2. 2
3. 4
4. 8

5. The body uses buffers to

1. take away pain
2. hold pH constant
3. facilitate chemical reactions
4. pick up oxygen

6. Which of the following molecules involves a triple covalent bond?

1. H₂0
2. O₂
3. CO₂
4. N₂

7. Covalent bonds involve the sharing of protons.

1. True
2. False

8. Positively charged atoms are

1. cations
2. anions
3. isotopes
4. A and C

9. All organic molecules must include at least carbon and hydrogen

1. True
2. False

10. Polar molecules involve atoms with greatly different

1. numbers of electrons
2. electronegativities
3. protons
4. numbers of hydrogens

11. Condensation synthesis reactions A.Consume water
    2. Produce water
    3. Break down organic molecules
    4. None of the above
12. Which kind of chemical bond produces cations and anions?

1. Covalent bonds
2. Ionic bonds
3. Hydrogen bonds
4. They can all produce ions