Biology GK · all questions

Cell Biology
practice.

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Q121

Archaeopteyrx' is a connecting link between which of the following classes of animal?

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Q122

Nucleolus was discovered by

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Q123

Number of mitochondria in bacterial cell is

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Q124

Match List I (Conditions of chromosome) with List II (Chromosome numbers) and choose the correct answer:

List-I	List-II
a. Monosomics	1. 2n + 2
b. Trisomics	2. 2n - 2
c. Nullisomics	3. 2n - 1 - 1
d. Double monosomics	4. 2n +1
e. Tetrasomics	5. 2n - 1

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Q125

Match List-I with List-II and select the correct answer:

List-I	List-II
a. Nucleus	1. De Duve
b. Chromosomes	2. Benda
c. Mitochondria	3. Waldeyer
d. Lysosome	4. Robert Brown

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Q126

DNA is made up of

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Q127

Match List-I (Complexes) with List-II (Alternative names) and select the correct answer:

List-I	List-II
a. Complex I	1. Succinate : CoQ reductase
b. Complex II	2. Cytochrome c oxidase
c. Complex III	3. ATPase
d. Complex IV	4. NADH/NADPH : CoQ reductase
e. Complex V	5. Reduced CoQ : cytochrome c reductase

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Q128

Mitotic chromosomes are made up by the coiling of a large cylindrical fibre called

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Q129

Chromosome number in any species

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Q130

The separating chromosomes during diplotene are held together at one or more points, where breaks and fusion had occured, called as

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Q131

Which one of the following is considered as a cell within a cell?

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Q132

Consider the following differences between heterochromatin and euchromatin and choose the correct answer:
1. Heterochromatin stains deeply while euchromatin stains less deeply
2. Heterochromatin is late replicating while euchromatin replicates during the early stage of the S phase
3. Heterochromatin does not become acetylated but euchromatin takes up acetic acid on its histone during interphase
4. The crossover frequency is more in heterochromatin than in euchromatin

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Q133

Who among the following referred to the mitochondria as bioplasts, and introduced the bioplast theory?

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Q134

Important site for the formation of glycoprotein and glycolipid is

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Q135

Sections through the nuclear pore show the presence of an electron dense ring or cylinder within the pore which has been called the

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Q136

The presence of what distinguishes a plant cell from an animal cell?

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Q137

Consider the following statements.
1. Centriole take part in spindle formation.
2. Centriole are found in animals.
Which of the statement(s) given above is/are true about centriole?

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Q138

Which of the following chromoplasts are photosynthetically inactive?

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Q139

Which organelles in the cell, other than nucleus contains DNA?

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Q140

In plant cells, the chromosomes may sometimes form a tangle of threads, called the

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