Cells and the Cell Cycle

Question 1

Heredity

Answer 1

genetics to one generation to another

Question 2

Cell theory

Answer 2

1. cells are the basic structural unit of life
2. All cells come from pre-existing cells
3. All organisms are composed of 1 or more cells

Question 3

The cell cycle

Answer 3

Used to create new daughter cells from the parent cell (all somatic cells)

Question 4

Functions of cell division in multicellular organisms

Answer 4

maintenance, repair, and growth

Question 5

How long does the cell cycle take for cells to complete

Answer 5

12-24 hours

Question 6

What are the 3 main stages of the cell cycle

Answer 6

1. Interphase
2. Mitosis
   3.Cytokinesis

Question 7

What happens in Interphase

Answer 7

cell growth, develops into functioning cell, copies DNA to prepare for division

Question 8

Mitosis

Answer 8

produces daughter cells from one parent cell (genetically identical)

Question 9

Prophase

Answer 9

-Chromatin condenses into chromosomes (each chromosome has 2 identical copies of genetic material)
-Held together by centromere
-disappearance of nucleolus and nuclear membrane
-centrosomes move to opposite poles and spindle fibers are created

Question 10

Metaphase

Answer 10

Spindle fibers (attached to centromere) guide chromosomes to cell’s equator

Question 11

Anaphase

Answer 11

-each centromere splits and siter chromatid sperate
-spindle fibers shorten and pull chromatid to poles

Question 12

Telophase

Answer 12

Chromosome unwind into chromatin and nuclear envelop and nucleolus reform

Question 13

Cytokinesis

Answer 13

division o of cytoplasm

Question 14

Cytokinesis of animal cell

Answer 14

indentation at equator pinches inward to divide cytoplasm and organelles

Question 15

Cytokinesis of plant cell

Answer 15

cell wall can’t pinch so cell plate forms between daughter cells and then cell wall forms on either side