Tag: difference between meiosis and mitosis
Questions Related to difference between meiosis and mitosis
Identify the wrong statement about meiosis.
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Pairing of homologous chromosomes
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Four haploid cells are formed
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At the end of meiosis number of chromosomes are reduced to half
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Two cycle of DNA replication occur
Meiosis is a specialized type of cell division that reduces the chromosome number by half, creating four haploid cells. In meiosis, DNA replication is followed by two rounds of cell division to produce four daughter cells, each with half the number of chromosomes as the original parent cell. The two meiotic divisions are known as Meiosis I and Meiosis II.
Which of the following statement is not true for meiosis?
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It is a process in which the chromosomes duplicate only once
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It is a process in which the cell divides twice
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The karyokinesis skips one of the phases compared to mitosis
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It results in the formation of four haploid cells
The stage of karyokinesis does not skip any phase in mitosis as compared to meiosis because the cell division phases are the same in meiosis and mitosis.
........... is used for preparing standard solutions in which it is always desired to maintain a constant pH.
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Buffer
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Plasma
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Serum
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None of the above
A buffer is a solution that resists a change in pH upon the addition of acidic or basic components. To effectively maintain a pH range, a buffer consists of a weak conjugate acid-base pair. It is either a weak acid and its conjugate base, or a weak base and its conjugate acid. Thus the correct answer is option A.
A buffer is a mixture of
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Weak acid and its salt with a strong base
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Strong acid and its salt with a strong base
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Weak acid and its salt with a weak base
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None of the above
The proton-pumps provide energy to cells through.
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pH gradient and electro potential gradient
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ATP and ADP
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Auxins and hormones
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Carbolwdrates and lipids
If the activity of an enzyme is constant over a broad range of pH values,it is likely that
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only ionizing groups on the enzyme participate in the reaction
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only ionizing groups on the substrate participate in the reaction
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ionizing groups on the enzyme and substrate participate in the reaction
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the temperature should be changed in order to observe a pH effect
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