問題一覧
1
This stage is named so because it is when the cell synthesizes a copy of its DNA in a very notable process called DNA replication.
Interphase-S
2
This stage is named so because it is when the cell synthesizes a copy of its DNA in a very notable process called ______.
DNA replication
3
-Continued growth and the production of materials that are necessary for cell division to occur -Protein synthesis but not at the rate similar to that of the G1 phase
Interphase-Gap 2
4
They undergo meiosis
Sex cells or gamete
5
They undergo mitosis.
Somatic cells or non-sex cells
6
-is marked by the formation of a cleavage furrow in animal cells -is marked by the formation of a cell plate in plant cells
Cytokinesis
7
can only occur once the genetic material is properly distributed to the daughter cells.
Cytokinesis
8
___ refers to how a cell divides to produce new cells.
Mitosis
9
will only begin mitosis if the conditions are correct and favorable for cell division.
Cell
10
check for errors.
Cell cycle checkpoint
11
The Chromosome DNA in interphase is found in the form of ____ which condenses during mitosis.
chromatin
12
Each chromosome is made up of two _____ ____.
sister chromatids
13
The ____ has 23 pairs of chromosomes for a total of 46 chromosomes in each cell. 23 is the haploid number whereas 46 is the diploid number.
human genome
14
23 is the ____ number
haploid
15
46 is the ____ number
diploid
16
____ is often represented as n
Haploid
17
While ____ is represented as 2n
diploid
18
The number of sets of chromosomes that a cell or an organism has is known as ____.
ploidy
19
All human body cells are diploid except ____ which are haploid.
gametes
20
In animals, the boundary of the new cells is known as the ____.
cleavage furrow
21
is not a phase of mitosis but is closely related to it.
Cytokinesis
22
is the M phase that leads to the production of either sperm cells or egg cells. This type of division is very closely tied with the process of sexual reproduction.
Meiosis
23
___ involves the pairing of the members of homologous chromosomes so as to allow them to undergo crossing over and to segregate them.
Synapsis
24
____ is considered the reductional division in meiosis because it reduces the number of sets of chromosomes from two to one.
Meiosis I
25
, by contrast, is considered the equational division in meiosis because there is no further reduction of the chromosome number in daughter cells.
Meiosis Il
26
can be described according to the number of divisions, number of daughter cells, and the unique events that take place.
Meiotic division
27
Applications of stem cell therapy range from genetic disorders to injuries.
STEM CELL TECHNOLOGY
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Meiosis produces new cell variants, and mitosis proliferates genetically modified cells.
GENETIC ENGINEERING
29
Cells are usually limited by a certain number of times that they can divide before being too aged to further undergo mitosis. This limit is known as the ____.
Hayflick limit
30
_____ is when the homologous chromosomes in the tetrads exchange segments. This is an event during meiotic division that allows recombination of genes, and ultimately, enhances genetic variation.
Crossing Over
31
Cell Cycle Diseases and Disorder
Cancer Nondisjunction disorders Mosaicism Alzheimer's disease Microcephaly Psychiatric diseases
32
A karyotype of a person with trisomy 21 (left) and a photo showing some of the distinct facial characteristics associated with _____ (right).
Down's Syndrome
33
A karyotype of a person with trisomy 13 (left) and a photo showing some of the distinct facial characteristics associated with _____(right).
Patau's syndrome
34
Skin discolorations are characterized by person with a ____ form of Klippel-Trénaunay syndrome.
mosaicism
35
____ is characterized by manic and depressive episodes.
Bipolar disorder
36
is characterized by severe depressive episodes.
Major depressive disorder
37
interferes with a person's sense of reality.
Schizophrenia
38
If errors occur in the cell cycle, the cell will either attempt to compensate for the error through repair processes or undergo ___ if the errors cannot be repaired.
apoptosis
39
The failure of the chromosomes or chromatids to separate properly is known as ____.
nondisjunction
40
is primarily characterized by uncontrollable cell division which results in a neoplasm, which is an abnormal growth of the defective cells.
Cancer
41
occurs when the cell has an abnormal number of chromosomes
Aneuploidy
42
Chromosome condensation happens in ____. Spindle formation also begins.
prophase
43
begins after the completion of the breakdown of the nuclear envelope.
Prometaphase
44
involves the alignment of the chromosomes in the metaphase plate.
Metaphase
45
The sister chromatids move to the opposite poles of the cell in .
anaphase
46
ends when two nuclei are formed in the cell.
Telophase
47
occurs when the cell has an abnormal number of sets of chromosomes
polyploidy