Exam #4 - Cell Division Flashcards Preview

BSC 2010 - Biology I > Exam #4 - Cell Division > Flashcards

Flashcards in Exam #4 - Cell Division Deck (108)
Loading flashcards...
1

Where do cells come from?

Cell division

2

Do all cells divide?
What are examples of cells that do NOT divide?

Blood cells
Brain cells
Muscle cells

Not all cells divide, but those produced by cell division divide.

3

What are three reasons why cells divide?

1) Growth/development
2) Repair/regeneration
3) Reproduction

4

Bacteria only have ___ chromosome and it's _______.

one.
circular - meaning it has to ends

5

Bacteria have one circular chromosome and it's copied by ____ _________.

DNA replication

6

Bacterial cells divide by _______ _______.

binary fission

7

How many chromosomes do we have?

46

8

How are eukaryotic cells more complicated?

1) Membrane bound organelles
2) multiple chromosomes

9

The ________ and ________ make their own DNA.

mitochondria and chloroplast

10

What about the E.R and Golgi? What will happen to them during cell division?

They will disassemble and disintegrate into many smaller component parts. The cell divides, and then those parts reassemble and make new E.R and Golgi

11

What are the two types of cell division in eukaryotes?

Mitosis and meiosis

12

Mitosis...
________ daughter cells.

identical

13

Meiosis...
The daughter cells have _____ the number of chromosomes as the parental cell.

HALF

14

The number of cells in the parental cell will always be a _____ number.

even

15

If you have 10 chromosomes, then meiosis gives you daughter cells, each of which have _ chromosomes.

5

16

What is the purpose of mitosis? (3)

Growth/repair/regeneration

17

What is the purpose of meiosis?

Reproduction

18

Mitosis occurs in body cells, also called _______ cells.

somatic

19

Mitosis is a tightly regulated series of events, unique to eukaryotes. Therefore, this process is controlled by many _______.

enzymes

20

______ is the result when cell division goes out of control.

cancer

21

Cell division during the __ phase.

M phase

22

The portion of the cycle in-between cell division is called _________.

interphase

23

Interphase accounts for __% of the cell cycle.

90%

24

What are the 3 sub phases of interphase?

S phase, G1 and G2

25

What occurs during S phase?

1) chromosome duplication
2) DNA synthesis

26

What occurs during G1 and G2?

1) growth
2) prep for next stage

27

Gap 1 Is a gap between ____ ______ and ___ ________.

cell division and DNA replication

28

Gap 2 is between ____ _________ and ____ _________.

DNA replication and cell division

29

What does the S stand for in the S phase?

Synthesis, DNA Synthesis

30

G phase means...

Gap phase