1.The number of chromosomes in diploid eukaryotic cells In which phase of the ce
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Question
1.The number of chromosomes in diploid eukaryotic cellsIn which phase of the cell cycle are chromosomes not visible under a light microscope ? A) interphase B)Anaphase C)Prophase D)Metaphase
2.DNA- wrapped his tones are known as: A) Chromatin loops B) Solenoids C)Rosettes D)Nucleosomes
3.What is a major role of APC? A)To directly target cohesin for degradation B) To initiate a pathway that results in cohesion’s degradation C) To activate Cdks
4.The more tightly coiled a region of DNA is, the less gene transcription occurs in the region. How tightly would areas of heterochromatin be wrapped? A) moderately B)not at all C)very tightly D)loosely
5.If a cell contains a mutation in the protein FtsZ, what process would be affected? A) Septation B)Cytokinesis C)cohesin cleavage D) DNA synthesis
6.How does the bacterial genome differ from the eukaryotic genome? A) The eukaryotic genome is compacted by SMC proteins, while the bacterial genome is arranged as chromatic B) Eukaryotic chromosomes need to be tightly packed to fit in the cell, bacterial chromosomes do not C) Bacterial chromosomes are circular and eukaryotic chromosomes are not D) Bacterial chromosome are made of RNA and eukaryotic chromosomes are made of DNA
7.What is the sequence of events in a typical cell cycle? A) S,G1, mitosis, cytokinesis B) G1, S, G2, cytokinesis, mitosis C) G1, S, G2, mitosis, cytokinesis D) G1, G2, S, mitosis, cytokinesis 1.The number of chromosomes in diploid eukaryotic cells
In which phase of the cell cycle are chromosomes not visible under a light microscope ? A) interphase B)Anaphase C)Prophase D)Metaphase
2.DNA- wrapped his tones are known as: A) Chromatin loops B) Solenoids C)Rosettes D)Nucleosomes
3.What is a major role of APC? A)To directly target cohesin for degradation B) To initiate a pathway that results in cohesion’s degradation C) To activate Cdks
4.The more tightly coiled a region of DNA is, the less gene transcription occurs in the region. How tightly would areas of heterochromatin be wrapped? A) moderately B)not at all C)very tightly D)loosely
5.If a cell contains a mutation in the protein FtsZ, what process would be affected? A) Septation B)Cytokinesis C)cohesin cleavage D) DNA synthesis
6.How does the bacterial genome differ from the eukaryotic genome? A) The eukaryotic genome is compacted by SMC proteins, while the bacterial genome is arranged as chromatic B) Eukaryotic chromosomes need to be tightly packed to fit in the cell, bacterial chromosomes do not C) Bacterial chromosomes are circular and eukaryotic chromosomes are not D) Bacterial chromosome are made of RNA and eukaryotic chromosomes are made of DNA
7.What is the sequence of events in a typical cell cycle? A) S,G1, mitosis, cytokinesis B) G1, S, G2, cytokinesis, mitosis C) G1, S, G2, mitosis, cytokinesis D) G1, G2, S, mitosis, cytokinesis eukaryotic cells
In which phase of the cell cycle are chromosomes not visible under a light microscope ? A) interphase B)Anaphase C)Prophase D)Metaphase
2.DNA- wrapped his tones are known as: A) Chromatin loops B) Solenoids C)Rosettes D)Nucleosomes
3.What is a major role of APC? A)To directly target cohesin for degradation B) To initiate a pathway that results in cohesion’s degradation C) To activate Cdks
4.The more tightly coiled a region of DNA is, the less gene transcription occurs in the region. How tightly would areas of heterochromatin be wrapped? A) moderately B)not at all C)very tightly D)loosely
5.If a cell contains a mutation in the protein FtsZ, what process would be affected? A) Septation B)Cytokinesis C)cohesin cleavage D) DNA synthesis
6.How does the bacterial genome differ from the eukaryotic genome? A) The eukaryotic genome is compacted by SMC proteins, while the bacterial genome is arranged as chromatic B) Eukaryotic chromosomes need to be tightly packed to fit in the cell, bacterial chromosomes do not C) Bacterial chromosomes are circular and eukaryotic chromosomes are not D) Bacterial chromosome are made of RNA and eukaryotic chromosomes are made of DNA
7.What is the sequence of events in a typical cell cycle? A) S,G1, mitosis, cytokinesis B) G1, S, G2, cytokinesis, mitosis C) G1, S, G2, mitosis, cytokinesis D) G1, G2, S, mitosis, cytokinesis
Explanation / Answer
1. Number of chromosomes is diploid eukaryotic cell is 2n. If it's homo sapiens then it's 46.
Chromosomes is not visible in Interphase stage Option A. In all the other stage chromosomes will appear as condensed state.
2. Option D. DNA wrapped around histones are termed as Nucleosomes. Solenoid is a secondary chromosomes structure termed as 30nm fibre.
3. Option B. APC targets securin for degradation. Securin releases separase after being degraded. Separase mediated the cohesion degradation.
4. Option C. Heterochromatin is very tightly packed. Whereas euchromatin is moderately packed.
5.Option B. Cytokinesis is affected by the mutated FtsZ. It is because it recruits protein which are essential for cell wall synthesis during cytokinesis.
6. Option C. Bacterial chromosomes are circular and eukaryotic chromosomes are linear.
7. Option C. Gap1 is followed by Synthesis phase where DNA is replicated. Then Gap 2 takes place. It is then followed by Mitosis where the chromosomes separate and cell division occur which is known as cytokinesis.
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