Intro to Cell Biology

Question 1

Name the 3 Domains of Life

Answer 1

1. Bacteria 2. Archaea 3. Eukarya

Question 2

Name a few similarities between Prokaryotes & Eukaryotes

Answer 2

Proks: No membrane bound organelles. -Cytoplasmic DNA - NO cytoskeleton - Replicate through Binary fission EUks: Membrane bound organelles - Nuclear DNA - Mitosis

Question 3

What are the stages of the cell cycle and When does DNA Replication take place?

Answer 3

G1, S1, G2 & Mitosis DNA Replication occurs in the S Phase

Question 4

Name the stages of Mitosis

Answer 4

PMAT: Prophase, Metaphase, Anaphase & Telophase

Question 5

What is the difference between Mitosis and Meiosis

Answer 5

Mitosis produces Diploid cells where as Meiosis produces 4 halploid cells

Question 6

Label each organelle and describe its function

Answer 6

Look at pic

Question 7

Clathrinn Mediated Endocytosis can only occur in which typ of membrane domain?

Answer 7

In non-lipid raft membrane domains

Question 8

Name the 2 transport molecular motors within the cell and determine which direction they travel

Answer 8

Kinesis - Anterograde (inside to outside)

Dynein: Retrograde (from outside towards center)

Question 9

What is the Primary function of the Mitochondria?

Answer 9

Produce ATP

Question 10

Where in the Mitochondria is ATP Synthesized?

Answer 10

ATP Synthesis occurs on the inner membrane of the Mitochondria

Question 11

In what direction does RNA plymerase read the DNA Template strand?

Answer 11

Read 3’ to 5’ but Transcribed 5’ to 3’

Question 12

How are nascent proteins sorted to compartments or secreted?

Answer 12

Through the golgi network: Packages and sorts which proteins go where in the cell

Question 13

What are Microfilaments, Microtubles & Intermediate filaments made out of?

Answer 13

Microfilaments: Actin

Microtubules: Tubiln

Microfilaments: Various components

All 3 form the structural backbone of the cell and each have their own function.