Biology Exam 4
Cancer normally develops quickly?
False
Eukaryotes have nucleoid area?
False
Haploid cells must have unreplicated chromosomes
False
Mitotic cells are always diploid, even though their sister chromatids separate
False
The restriction point is located in G zero
False
Unreplicated chromosomes means the cell is haploid?
False
Interphase contains:
G1 G2 S
_____ are present during meiosis 1 Prophase. when the cell is and DNA in the cell is
Homologous chromosomes the cell is diploid the cell is replicated
36, the cell has completed Telophase and Cytokinesis, how many chromosomes?
18
If somatic cell is 2n=36 how many daughter cells are now present?
2
In a diploid human cell 2n= 46, what does this mean?
23 pairs
If 2n =72 cell is in Prophase 2 after Meiosis 1
36 replicated
How many chromosomes are in each daughter cells that is 2n= 52, at the end of Telophase
52
If 2n =104 how many chromosomes per cell are present in Metaphase 2 or Meosis 2
52
If 2n = 108 G1 and Meiosis 1 how many chromosomes
54
If 2n= 14 how many of what do you have at the end of telophase 2 in meiosis 2 (per cell)
7 replicated chromosomes
In tigers 2n= 72 this means
72 homologues/ 36 tetrad/ 36 homopairs
A cell that is 2n= 8 mitosis S phase how many chromosomes does it have Replicated or unreplicated
8 replicated
A cell is 2n= 92 mitosis and G1. the two daughter cells will have how many chromosomes per cell? Are they replicated or unreplicated
92 unreplicated
Order of stages of Mitosis
M G1 S G2
Which of the following is an example of density dependent inhibition
cells that touch each others cell membranes will not divide
At the end of telophase/ cytokinesis 1 of Meiosis 1, are the chromosomes replicated or unreplicated? are they haploid or diploid?
replicated/ haploid
Two chromotids are attached by a centromere
sometimes do and sometimes dont contain identical genetic info because crossing over may have occured
If 2n = 22 what is the outcome in a mitotic cell at the end of Telophase and cytokinesis
the cell is diploid, has 22 unreplicated chromosomes
Cyclins are one of the many chemicals responsible for cell cycle progression. they're also targets for development of anti cancer drugs
true
At the end of telophase and cytokinisis 2 the chromosomes are replicated or unreplicated
unreplicated
In a somatic cell 2n =104 end of Telophase chromosomes replicated or unreplicated
unreplicated
Normal function of APC is to promote cell to exit division?
True
Programmed cell death pathway is asssociated with p53
True
Normal cells are
Density dependent, anchorage dependent, division limited
When chromosomes pairs are physically paired up during metaphase Meiosis 1
Tetrad
If a cell is 2n= 38, this means
The cell is diploid and has a total of 38 replicated chromosomes
In one aspect of cell function during G1, the cell is deciding if it should pause from progressing around the cell cycle
True
Chromatin is composed of DNA associated with proteins
True
G zero of the cell cycle is important because this phase is connected to programmed cell death pathways
True
Homologous pairs are lined up in Meiosis 2 and in Mitosis
True
In humans, the pairs of chromosomes that dont include the sex chromosomes are called
autosomes
Process of Mitosis ensures
daughter cells receive proper number of chromosomes
During G1 after Mitosis the DnA in the cell is
diploid and not replicated
Each daughter cell went through S phase after Meosis 1
false
Is each cell haploid or diploid at end of Telephase 2
haploid
Examples of tumor suppressor genes in your body are
p53
MAD genes produce a protein that can
interrupt the cell cycle
Checkpoints are where within the cell
located within G1, M, and G2
