3.1. Overview of the Cellular Basis of Life

Question 1

What are the building block of all unit?

Answer 1

Cells

Question 2

What are groups of cells that are similar in structure and function?

Answer 2

Tissues

Question 3

What carries out all chemical activities needed to sustain life?

Answer 3

Cells and Tissues

Question 4

What are the organized (3) three main regions of cells?

Answer 4

• Nucleus
• Cytoplasm
• Plasma membrane

Question 5

What is the control center of the cell?

Answer 5

Nucleus

Question 6

What does the Nucleus contain?

Answer 6

It contains genetic material (DNA)

Question 7

What are the (3) three regions of the Nucleus?

Answer 7

• Nuclear Membrane
• Nucleolus
• Chromatin

Question 8

What region of the Nucleus is the ff:
• Barrier of nucleus
• Consists of a double phospholipid membrane
• Contain nuclear pores that allow for exchange of material with the rest of the cell

Answer 8

Nuclear Membrane

Question 9

What region of the Nucleus is the ff:
• Nucleus contains one or more nucleoli
• Sites of ribosome production:
- Ribosomes then migrate to the cytoplasm through nuclear pores

Answer 9

Nucleoli

Question 10

What region of the Nucleus is the ff:
• Composed of DNA and protein
• Scattered throughout the nucleus
• Chromatin condenses to form chromosomes when the cell divides

Answer 10

Chromatin

Question 11

What region of the Nucleus is the ff:

• Barrier for cell contents
• Double phospholipid layer
• Also contains protein, cholesterol, and glycoproteins

Answer 11

Plasma Membrane

Question 12

What are the Double Phospholipid Layer of the Plasma Membrane?

Answer 12

• Hydrophilic heads

* Hydrophobic tails