Cellular Structure & Function

Question 1

Two types of chromatin

Answer 1

1. Heterochromatin (INACTIVE)
   - -> More darkly stained, condensed clumping pattern
2. Euchromatin (ACTIVE)
   - -> Pale blue, diffuse, uncondensed

Question 2

Regulation of the hematopoietic microenvironment is provided by the _

Answer 2

Stromal cells

–> Include endothelial cells, adipocytes, macrophages, lymphocytes, etc. and growth factors

Question 3

The stage where DNA replication takes place

Answer 3

S stage

Question 4

The stage where cell growth and synthesis of components necessary for replication

Answer 4

G1

–> Lasts for

Question 5

In this stage, the cell is not active in the cell cycle

Answer 5

G0 (Quiescence)

Question 6

The stage that involves the division of chromosomes and cytoplasm to 2 daughter cells

Answer 6

M stage (Mitosis)

Question 7

Two major mechanisms of cell death

Answer 7

1. Necrosis

2. Apoptosis

Question 8

A pathologic process caused by direct external injury to cells

Answer 8

Necrosis

Question 9

A self-inflicted cell death originating from the activation signals within the cell itself

Answer 9

Apoptosis

Question 10

Type of chromatin that is Active, Diffuse, Lightly stained

Answer 10

Euchromatin

Question 11

Heterochromatin that is Inactive, Condensed, and Darkly Stained

Answer 11

Heterochromatin

Question 12

Cell death that causes cell swelling / Inflammation

Answer 12

Necrosis

Question 13

State the hrs. for each phase

1. G1
2. G2
3. S
4. M

Answer 13

1. G1 - 10 hrs
2. G2 - 8 hrs
3. S - 4 hrs
4. M - 1 hr