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Quiz von Chloe Schepers, aktualisiert more than 1 year ago
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Erstellt von Chloe Schepers
vor mehr als 7 Jahre
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Frage 1
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DNA is replicated during the [blank_start]synthesis[blank_end] during interphase of the cell cycle
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synthesis
Frage 2
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when a cell has become so specialized that it will never reproduce, it enters the [blank_start]special[blank_end] phase of the cell cycle.
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special
Frage 3
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a [blank_start]Dyad[blank_end] chromosome has 2 sister chromatids
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Dyad
Frage 4
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[blank_start]synapsis[blank_end] is the process where the homologous pairs of chromosomes come together to form a tetrid
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synapsis
Frage 5
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humans have [blank_start]22[blank_end] pairs of autosomal chromosomes and 2 sex chromosomes
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22
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24
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42
Frage 6
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cell division takes place during the [blank_start]m-phase[blank_end]
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m-phase
Frage 7
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homologous pairs of chromosomes carry genes for the same traits at the same loci but may carry different alleles for these genes
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- True
- False
Frage 8
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a haploid cell has half the diploid N number of chromosomes
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- True
- False
Frage 9
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the phase of the cell cycle that has primarily for growth , development and specialization is the [blank_start]interphase[blank_end] G1 Phase
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interphase
Frage 10
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the cell prepares for division by growing and reproducing [blank_start]centrioles[blank_end] during the G@ phase of the cell cycle
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centrioles
Frage 11
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formation of the cell plate occurs during [blank_start]cytokinesis[blank_end] in plant cells
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cytokinesis
Frage 12
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the first phase of mitosis is [blank_start]prophase[blank_end]
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prophase
Frage 13
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the dyad chromosomes are separated into monads during
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telophase
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prophase
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anaphase
Frage 14
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during metaphase the dyad chromosomes
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line up along the metaphase plate
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the nuclear membrane breaks apart
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the nucleus disapears
Frage 15
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chromosomes are captured and moved by a series of microtubulose called the [blank_start]spindle[blank_end] that cross the equator of the cell
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spindle
Frage 16
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the nuclear membrane reforms, chromosomes uncoil and nucleolus reappears during [blank_start]telophase[blank_end]
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telophase
Frage 17
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in animal cells cytokinesis occurs when a [blank_start]contratile[blank_end] protein surrounds the cell and tightens eventually dividing the cell in two
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contratile
Frage 18
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the 4 types of cancer that account for more than half of all cases
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lung
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prostate
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breast
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colon
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kidney
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stomach
Frage 19
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the cell mass formed by the inappropriate proliferation of cells is a tumor
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- True
- False
Frage 20
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the spread of cancer cells from the primary tissue to form cancer cluster in other tissues is called metastais
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- True
- False
Frage 21
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[blank_start]mutations[blank_end] are the root cause of all cancers
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mutations
Frage 22
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in the DNA a gene that causes cell proliferation is called
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proto-oncogenes
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oncogenes
Frage 23
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when prto-oncogenes become hyperactive due to mutations its called an
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oncogenes
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tumor
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metastatis
Frage 24
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genes that keep cancerous cells in check are called [blank_start]tumor[blank_end] suppressor genes
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tumor
Frage 25
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it takes mutations in multiple proto oncogenes and tumor supressor genes withen a cell to become cancerous
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- True
- False
Frage 26
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retstrains cancerous changes in many ways detetcting damage to dna triggering repairs halting the cell cycleuntil repairs are completed and if it cant repair it triggers death
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BRCA 1&2 and P53
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metastatis
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chemotherapy
Frage 27
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traditional cancer treatments are [blank_start]radiation[blank_end] and [blank_start]chemotherapy[blank_end] by killing rapidly dividing cells
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radiation
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chemotherapy
Frage 28
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new therapies include [blank_start]telomerase[blank_end] activity and the use of [blank_start]antibodies[blank_end] that seek out and selctivly destroy malignent cells
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telomerase
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antibodies
Frage 29
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cell division is controlled by positive and negitive growth regulators
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- True
- False
Frage 30
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5% of cancers are hereditary caused in part by mutations in [blank_start]cancer critical[blank_end] genes
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cancer critical
Frage 31
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a [blank_start]carcinogen[blank_end] is any physical,chemical or biological agent that elevates the risk of cancer
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carcinogen
Frage 32
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2 viruses associated with increased cancer risks are [blank_start]bacteria[blank_end] and [blank_start]HPV[blank_end]
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bacteria
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HPV
Frage 33
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[blank_start]angiogenesis[blank_end] is when blood vessels form around a tumor
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angiogenesis
Frage 34
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the advantage to crossing over is [blank_start]variability[blank_end]
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variability
Frage 35
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the first stage of mitosis is [blank_start]prophase[blank_end] where chromatin coils up into dyad chromosomes and the nuclear membrane breaks apart the nucleolus disappears and the spindle starts to form
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prophase
Frage 36
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the 2nd phase of mitosis [blank_start]metaphase[blank_end] where the spindle is completed the dyads line up along the metaphase plate
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metaphase
Frage 37
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the 3rd phase of mitosis is [blank_start]anaphase[blank_end] the centromere holding the two sister chromatids together splits the newly separated chromosomes are pulled to opposite poles of the cell
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anaphase
Frage 38
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the 4th phase of mitosis [blank_start]telophase[blank_end] where the chromosomes uncoil the nuclear membrane reforms the nucleolus reappares cytokineses occurs
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telophase
Frage 39
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[blank_start]meoisis 1[blank_end] lines up pairs , separating homogulous pairs and meosis 2 is just like [blank_start]mitosis[blank_end]
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meoisis 1
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mitosis
Frage 40
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[blank_start]reduction[blank_end] division reduces the number of chromosomes
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reduction
Frage 41
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Xy is a [blank_start]male[blank_end]
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male
Frage 42
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XX is a [blank_start]female[blank_end]
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female
Frage 43
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humans have [blank_start]22[blank_end] autosomal pairs, [blank_start]2[blank_end] sex chromosomes which is [blank_start]46[blank_end] total
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22
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2
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46
Frage 44
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in human cells, the N is [blank_start]half[blank_end] the number of haploid cells which is 23
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half
Frage 45
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in human cells the [blank_start]2N[blank_end] is 46 diploid cells
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2N
Frage 46
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cytokinesis in plant cells use a [blank_start]cell plate[blank_end]
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cell plate
Frage 47
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cytokenisis in animals cells use a [blank_start]contractile[blank_end] protein
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contractile
Frage 48
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asexual reproduction is more energy effecient but sexual provides more variation
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- True
- False
Frage 49
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charachteristics of cancer cells
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spread
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self sufficiency
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formation of bloof vessels
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