Cell Cycle and Division 4.3.1

Question 1

What is cell cycle?

Answer 1

A sequence of event in which a cell grows, replicates its structures and divides
-spends most time in interphase)

(Two major phases are interphase and mitotic phase (M phase)

Question 2

What is cell division?

Answer 2

The process in which a single cell splits into two or more ne functional cells (biochemical/physical processes)
-reproduction (single-celled)
-helps growth, change overtime, repair damaged tissues (multicellular, humans)
-happens quickly (speed varies for different types of cells)

Question 3

What is cell growth?

Question 4

What are chromosomes?

Answer 4

Coiled structures made of DNA and proteins
-made up of two chromatids
-centromere hold the chromatids together (center circle)
-forwards and backwards “C”

karotype = human genome

(histones wrap up DNA-chromatin(stringy)-chromosomes)

Question 5

What is cytokinesis?

Question 6

What is G0 phase?

Answer 6

Signal reminder

Question 7

What is G1 phase?

Answer 7

-within interphase
-longest phase

Question 8

What is G2 Phase?

Answer 8

Cells prepares for division
-cell grows more
-produces proteins, organelles, and membranes

-within interphase

Question 9

What is interphase?

Answer 9

-longest time (90%)

Question 10

What is mitosis?

Answer 10

Division of nucleus
stages - prophase, metaphase, anaphases, and telophase

(M phase, two parts)

Question 11

What is mitotic phase?

Answer 11

Consists of mitosis and cytokinesis

Question 12

What is S phase?

Answer 12

The DNA is replicated

(transcription and translation occurs here)

-within interphase