Tag: cell division

Questions Related to cell division

Angiotensinogen is a protein secreted by

mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

  1. Juxtaglomerular cells

  2. Macula densa cells

  3. Endothelial cells

  4. Liver cells

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Correct Option: D
Explanation:
Angiotensinogen is a plasma protein produced and secreted by liver cells. It is a sole precursor of all angiotensin peptide. Juxtaglomerular cells secrete renin which acts on angiotensinogen to release angiotensin I and then it is converted to angiotensin II by the action of enzyme angiotensin-converting enzymes.
So, the correct answer is 'Liver cells'.

Calcium occurs in

mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

  1. All body cells

  2. Bones and teeth

  3. Cells of respiratory system

  4. 3% of mineral content

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Correct Option: A

Division of the nucleus is called ..........

mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

  1. Cytokinesis

  2. Karyokinesis

  3. Replication

  4. None of the above

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Correct Option: B
Explanation:

Division of the nucleus is called karyokinesis. The process of partition of a cell's nucleus into the daughter cells during cell division is called karyokinesis. All the changes in a nucleus that occur during cell division are collectively termed as karyokinesis. It has four stages prophase, metaphase, anaphase, and telophase.

So the correct answer is "Karyokinesis".

All nuclear changes that occur during mitotic cell division are collectively called as

mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

  1. Karyokinesis

  2. Cytokinesis

  3. Recombination

  4. Both A and B

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Correct Option: A
Explanation:

All nuclear changes (Prophase, metaphase, anaphase, and telophase) that occurs during mitotic cell division are collectively called as karyokinesis. Mitotic cell division consists of two steps. The first step is karyokinesis where nuclear division takes place which is followed by cytokinesis i.e the division of cytoplasm takes place and individual daughter cells are formed. So, the correct answer is 'Karyokinesis'.

The epithelial cells lining the stomach of vertebrates are protected from damage by HCl because.

mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

  1. HCl is too dilute

  2. The epithelial cells are resistant to the action of HCl

  3. HCl is neutralized in the stomach

  4. The epithelial cells are covered by mucus

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Correct Option: D
Explanation:
The epithelial cells lining the stomach of vertebrates are protected from damage by HCl because 'the epithelial cells are covered by a mucous secretion'.
So the correct option is D.

Epithelial cells serves the function of protection, secretion and absorption and is separated from the other tissues below by a _____.

mitosis structure of chromosome, cell cycle and cell division cell division biology cell division in embryo development division for growth and reproduction

  1. Basal lamina

  2. Lamina propria

  3. Connective tissue

  4. Stratum granulosum

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Correct Option: B

Which stage of cell cycle occurs immediately prior to mitosis 

biology cell division cell division in embryo development division for growth and reproduction structure of chromosome, cell cycle and cell division mitosis

  1. $M$

  2. $G _1$

  3. $S$

  4. $G _2$

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Correct Option: D
Explanation:

$G _2$ phase is the phase of cell cycle occurs immediately prior to mitosis.
sequence of cell cycle is -- $G _1$ to $S$ to $G _2$ to $M$ to cytokinesis.

So, the correct answer is '$G _2$