BIO 182 Exam 1 - ASU Exam Questions and Correct Answers. 100% Correct. 2024/5.
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Course
BIO 182
Institution
BIO 182
BIO 182 Exam 1 - ASU Exam Questions and Correct Answers. 100% Correct. 2024/5.
base pair?
different nuclei types in DNA
what is a gene?
What is the purpose of cell division?
Four events must occur for cell division:
1. Reproductive Signal
-initiate cell division
2. Replication
3. Segregati...
BIO 182 Exam 1 - ASU Exam Questions and
Correct Answers. 100% Correct. 2024/5.
base pair?
different nuclei types in DNA
what is a gene?
What is the purpose of cell division?
Four events must occur for cell division:
1. Reproductive Signal
-initiate cell division
2. Replication
3. Segregation
4. Cytokinesis
Binary Fission
In prokaryotes, binary fission results 2 new cells.
Why can't
Chromosomes?
wrapped up/ compiled DNA
- made of DNA and proteins.
Nucleosome
Chromatin
Chromatin
uncoiled dna
chromosomes
coiled dna
The molecules that make up a chromosome are _________________ and __________________.
B. DNA; proteins
Karyotype
the number, shapes, and sizes of the chromosomes in a cell.
Ploidy
the number of homologous chromosomes in the cell.
, Diploid
one set of chromosomes from each parent - two copies of the genome.
- diploid species have matched pairs of chromosomes = homologous chromosomes.
Haploid
the number of chromosomes in a gamete (sperm or egg) only one copy of genome.
Homologous Chromosomes
a pair of chromosomes.
Goal of mitosis
move identical genetic info into 2 new cells.
A diploid cell entering mitosis
- 3 pairs of chromosomes
- 2n = 6
G1 phase
- protein synthesis
- takes about 10 hrs.
G2 Phase
preparation for mitosis.
needs more proteins to mitosis to go.
centrosomes make their way to the north and south pole.
S phase
(DNA synthesis)
- DNA is copied before cell division.
- centrosomes are replicated.
Mitosis
Goals:
Separate replicated DNA
Move them to opposite sides of the cell
Form new cells around them
Prophase 1
chromatin / DNA coils up into chromosomes.
spindle fibers spread to
Prometaphase
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