Cell Cycle + M-phase

Question 1

Mitosis is defined as…

Answer 1

Nuclear division

Question 2

Cytokinesis is defined as…

Answer 2

Cytoplasmic division

Question 3

Kinetochore

Answer 3

Collection of proteins

Question 4

During prophase, the parts broken down are…

Answer 4

1. Nuclear envelope
2. Nuclear pore complexes
3. Nuclear lamina

Question 5

During prophase, these are formed by the addition of a phosphate group…

Answer 5

Nuclear membrane vesicles

Question 6

Give the order of M-phase:

Answer 6

(1) Prophase
(2) Prometaphase
(3) Metaphase
(4) Anaphase
(5) Telophase

Question 7

Prophase

Answer 7

• Disassemble interphase MT array, form mitotic spindle
• Centrosomes move to opposite poles
• Chromatin condenses
• Nuclear envelope dissociates

Question 8

Prometaphase

Answer 8

-Kinetochore MTs move pairs of sister chromatids back & forth until they reach metaphase plate

Question 9

Metaphase

Answer 9

• All pairs of sister chromatids are lined up on metaphase plate
• Connection between chromatids broken

Question 10

Anaphase

Answer 10

• Anaphase A: kinetochore MTs separate sister chromatids

- Anaphase B: polar MTs “push” & astral MT “pull” poles

Question 11

Telophase

Answer 11

Undo what was done during prophase

Question 12

Cytokinesis

Answer 12

Cytoplasmic division using contractile ring of actin & myosin

Question 13

The Cell Theory

Answer 13

1. The cell is the fundamental unit of life
2. All living organisms are made of one or more cells
3. All cells come from pre-existing cells

Question 14

_________ cells can be distinguished microscopically.

Answer 14

Mitotic

Question 15

___________ cells must be distinguished biochemically.

Answer 15

G1-S-G2

Question 16

___________ cells incorporate radioactive thymidine.

Answer 16

S-phase

Question 17

Phosphotases

Answer 17

a group of enzymes that remove phosphate groups from molecules