2nd Biology+Zoology (International Student in US needs help)

I just took my second exam, I did a little bit better even though it was longer than the previous one.
Once again the teacher did not give us the correct answers, he just marked an X right next to every question I got wrong.

I have asked to teacher to give me the right answers, to be able to study for the final, but he never did .

I need you guys to help me once again to get the correct answers, sorry to be such a bother but I don't know what else should I do.

1. A biome made up of dry hot grasslands best describes:
a. Semideserts
b. Taiga
c. Tundra
d. Temperate grassland

2. England and Holland are much warmer than the southern end Hudson's Bay even though both are at about the same latitude. This is largely an effect of
a. European Community Policy
b. More direct sunlight in Europe
c. El Nino
d. Ocean Currents

3. The increasing______________concentration in the atmosphere is through to be a major factor in global warming.
a. Ozone
b. Sulfur Dioxide
c. Oxygen
d. Carbon Dioxide

4. During a chemical reaction, fluorine gains an electron. We would say that fluorine has been;
a. Oxidized
b. Reduced

5. The outer electron shell of an element's atoms contains 8 electrons. We would say that this element is;
a. Highly reactive
b. A cation
c. An anion
d. Inert

6. In an ionic bond, electrons are;
a. Shared between atoms
b. Transferred between atoms

7. The sequence of amino acids in a protein is called the _________ of the protein.
a. Primary structure
b. Secondary Structure
c. Motif
d. Domains

8. In DNA
a. Guanine binds to cytosine
b. Adenine binds to thymine
c. Uracil does not occur
d. Only A and B are true
e. A, B and C are true

9. The lipid bilayer of the plasma membrane is composed of:
a. Phospholipids
b. Cholesterol
c. Ribosomes
d. Only A and B are true
e. A, B and C are True

10. Ribosomal RNA is mostly produced by the
a. Nucleus
b. Nucleolus
c. Rough endoplasmic reticulum
d. smooth endoplasmic reticulum

11. This membrane system is studded with ribosomes
a. Golgi apparatus
b. nucleolus
c. Rough endoplasmic reticulum
d. smooth endoplasmic reticulum

12. These structures are associated with kinesins and the dyneins
a. Actin filaments
b. Microtubules
c. Intermediate filaments
d. Centrioles