Flashcards in Exam #4 - Cell Division Deck (108)
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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
