Chapter 11 Flashcards

(77 cards)

1
Q

proto oncogenes can

A

mutate into oncogenes

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2
Q

oncogenes

A

help transform a normal cell into a tumor cell

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3
Q

not a cleavage furrow but a

A

cell plate

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4
Q

retain PM adhesion proteins that help them properly ahchored to other cells

A

benign

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5
Q

Dolly was cloned from an

A

adult somatic cell

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6
Q

Telomerase

A

reverse telomere shortening o

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7
Q

when does telomere shortening occur

A

after DNA replication

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8
Q

Proteins that regulate expression of dNA repair enzymes

A

tumor suppressor genes

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9
Q

cancer occurs when a malignant neoplasm

A

physically and metabolically disrupts body tissues

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10
Q

cell does what it’s supposed to

A

interphase

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11
Q

Centrioles are

A

microtule barrels at right angles to each other

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12
Q

dense region in the cytoplasm containing centrioles

A

centrosome

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13
Q

what breaks down in prophase

A

nuclear envelope breaks down and nucleolus disappears

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14
Q

Prophase

A

centrioles move to opposite poles and spindle fibers form

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15
Q

In prophase chromosomes are now __

A

condensed and visible

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16
Q

where are kintekore fivers located

A

centromere

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17
Q

what do kintecore fibers do

A

pull chromosomes

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18
Q

polar fibers go from ____ and provide ____

A

pole to pole

stability

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19
Q

Mitotic spindle in completely formed (made of spindle fibers and microtubules)

A

metaphase

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20
Q

the middle aka

A

metaphase plate

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21
Q

___ are pulled to opposite poles

A

sister chromatids

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22
Q

after pulled to opposite pulls, they are referred to as

A

true chromosomes

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23
Q

Telophase: __ forms around each __

A

nuclear envelope

chromosome

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24
Q

is nucleolus visible in telophase?

A

yes

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25
What disassembles in telophase
spindle fibers
26
after PMAT cells go to
interphase
27
are centrioles already there in interphase
yes
28
what are 2 main parts of cell cycle
interphase | cell division
29
what is interphase made of
g1, s, g2
30
what is cell division made of
mitosis | cytokinesis
31
only one copy of each info in
interphase
32
G2 purpose
prepare for division
33
mitosis results in
two identical diploid somatic cells
34
enzymes are
helikase primase Polymerase Ligase
35
white blood cells
limphasites
36
what are in G0
limphasites and neurons
37
why are memory cells stored in G0?
to be ready for another attack (they record memories of making antibodies)
38
cells might enter G0 after
G1
39
checkpoitnts after
G1 and G2
40
period of massive growth
G1
41
makes organelles ready
G1
42
additional growth and replicating structures needed for divison
G2
43
detours to G0 if
not going to undergo diviosn
44
you can have
copied and uncapped homologous pair
45
>< is
uncopied homologous pair chromosomes
46
XX is
copied homogenous pair of chromosomes
47
``` tall lots acne learning disabilities feminine fat deposits fertility issues ```
Trisomy 23
48
XXY
trisomy 23
49
brakes on cell cycle keep cells in
G1
50
Nutrient availability DNA damagee Completion of DNA copyingqchckpoin genes
checkpoint genes
51
what form contractile line down midline
actin and myosin
52
Plant:
dissassemle mirotubles, which move vesicles to midline
53
shorten by __ each recplication
100 chromosmes
54
replace lost nucleotides
telomerase
55
when telomerase removed in mice
telomeres unnaturally short
56
can checkpoint genes mutuate
y
57
Benign
cysts, warts, tumor
58
growth factors can be
proto-oncogenes
59
most neoplasms have mutations resulting in overavbundance of
Epidermal growth factor receptor
60
lead to proteins that interfere with tumor suppressors
HPV
61
tumor suppressors
inhibit mitosis
62
normally, pro ones
code for proteins that help regulate cell division
63
what have abnormal chromosome number
malignant cells
64
use fermentation
malignant cells
65
what are immortal and replace mortal cells
stem cells
66
___ in sex cells run in families
oncogene mutations
67
create polio vaccine
Hela
68
Most common Pigmented Least dangerous
Basal cell carcinoma
69
2nd most common pink and firm under surface
squamous cell carcinoma
70
malignant melanoma is
pigmented
71
Hela person
Henrietta Lacka
72
oncogenes are
cancer causing genes
73
do plant cells have centrosomes
no
74
vesicles cluster before
mitosis ends
75
__ are duplicated before prophase
centrosomes
76
cytoplasm divides between
A and T
77
__ makes cleavage furrow
contractile ring of action and myosin