Unit 2 Study Guide

Unit 2 Lecture Study Guide

1) What are the parts of an atom? Where are the subatomic particles found?

The three subatomic particles in an atom are protons, neutrons, and electrons. The protons and neutrons are in the nucleus while the electrons are orbiting the nucleus.

2) How does the Atomic Mass # differ from the Atomic #?

There is a difference between the meanings of atomic mass and mass number. One is the average weight of an element and the other is the total number of nucleons in the atom's nucleus.

Atomic mass is also known as atomic weight and the mass number is the total number of protons and neutrons.

3) What is an isotope? Give an example (show how it is an isotope).

An isotope has the same number of protons, but a different number of neutrons, as another atom. A classic example is carbon. Most carbon in the world is what we call "Carbon 12," meaning that it has an atomic mass of 12, but some carbon is "Carbon 14," with two extra neutrons, and thus an atomic mass of 14.

4) Compare and contrast the 3 basic types of chemical bonds and give an example of each.

5) Why is pH important in Anatomy?

9) Name the 4 main Organic Molecules in Biochemistry. Describe each one, and provide an example. What are the “building blocks” of each molecule? For example, protein = Amino Acid.

10) There are 4 levels of protein structure. What are the levels? How do the levels of a protein differ in structure and function?

11) Describe the structure of ATP and why it is important?

12) Why is the plasma membrane important to cells?

13-17) Name 5 cell organelles and their functions.

18) Describe the structure of DNA.

19) How does DNA differ from RNA?

20) Describe transcription and translation in your own words.

21) How are mitosis and meiosis similar…..different?