The cells were first seen microscopically by

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The cells were first seen microscopically by

A. Scheiden

B. Schwann

C. Leeuwenhock

D. Robert Hook

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The unit of heredity is

A. gene

B. centromere

C. telomere

D. chromosome

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The nucleus of a prokaryotic cell is represented by

A. a well-defined nuclear membrane

B. nucleolus only

C. double stranded circular DNA

D. single stranded DNA

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Lysosomes were discovered by

A. Porter

B. DeDuve

C. Palade

D. Golgi

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Cellular components can be physically separated from each other by

A. centrifugation

B. radioactive tracers

C. microscopy

D. chromatography

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The function of cristae in a mitochondrion is

A. electron transport and ATP synthesis

B. carbon assimilation

C. intake of $o_{2}$

D. elimination of $c o_{2}$

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In centriole, microtubules are arranged in this order:

A. 9 + 2

B. 9 + 4

C. 9 + 0

D. 9 + 1

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Sequence of nucleotides in a DNA strand is CAT TAG CAT CAT GAC, what will be the base sequence in complementary strand of RNA?

A. GUA AUC GUA GUA CUG

B. GTA ATC GAT GTA CTA

C. TAG ATG ATG GUA CUG

D. GTA ATG GTA GAT CTA

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Cells having large nuclei in proportion of cytoplasm are perhaps

A. dying

B. dehydrated

C. active

D. dividing

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In the mitochondria, cytochromes are localised in

A. matrix

B. outer membrane

C. inner membrane

D. none of these

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Concept of unit membrane was given by

A. Danielli and Davson

B. Singer and Davson

C. Buvat

D. Robertson

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Hydroly tic enzymes are abundant in

A. peroxisomes

B. microsomes

C. lysosome

D. lomasome

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The "chromosome theory of heredity" was given by

A. Sutton and Bateson

B. Bateson and Punnett

C. Sutton and Boveri

D. Waldeyer and Hofmeister

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The nucleus of a plant cell was discovered by

A. Robert Brown

B. Huxley

C. Virchow

D. Hammerling

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Ribosomes are the centre of

A. respiration

B. photosynthesis

C. protein synthesis

D. fat synthesis

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Mitochondria were first observed in striated muscle cells by

A. Benda

B. Kolliker

C. Altmann

D. Robert Hooke

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Ribosomes of plastids and mitochondria are

A. 55S to 70S

B. 80S

C. 40S

D. 60S

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According to cell theory

A. all cells have nuclei

B. all cells are living

C. cells, are fundamental units of all the living organisms

D. cells arise from pre-existing cells

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Physical basis of life is

A. nucleus

B. cell

C. protoplasm

D. nutrition

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In plant cell vacuole contains

A. water

B. cytoplasm

C. air

D. water and dissolved substance

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Electron microscope has revealed the presence of

A. ribosomes

B. chromosomes

C. chloroplast

D. leucoplast

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The term protoplasm was termed by

A. Dujardin

B. Purkinje

C. VonMohl

D. Malpighi

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Chemical constitution of nucleus is

A. DNA and proteins

B. RNA and proteins

C. DNA, RNA and proteins

D. RNA arid DNA

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The maximum magnification possible with electron microscope is

A. 200 times

B. 2000 times

C. 20,000 times

D. 200,000 times

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Extranuclear DNA is found in

A. chloroplast

B. ribosomes

C. endoplasmatic reticulum

D. golgi apparatus

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The cell size is dependent upon

A. oxygen supply

B. nutrition

C. regulation by nucleus

D. all of die above

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There are 46 chromosomes in humans, of which

A. any 23 chromosomes are from father and remaining from the mother

B. the first 11 pairs and 'X' are from the father and next 11 pairs and 'Y' from the mother

C. the first 11 pairs and 'X' from mother and remaining from father

D. out of each pair one is received from the father and the other from the mother

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One angstrom is equal to

A. $10^{- 8}$ cm

B. $10^{- 8}$ m

C. $10^{- 6}$ m

D. $10^{- 7}$ m

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The cells were first seen microscopically by

A. Scheiden

B. Schwann

C. Leeuwenhock

D. Robert Hook

Discuss this answer

Another name for ligase is

A. joining enzyme

B. RNA polymerase

C. nuclease

D. none of these

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Function of Golgi bodies in plants is

A. transport of mutabolities

B. translocation of enzymes

C. synthesis of cell-wall

D. production of microbodies

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Accepted Answer

D. Robert Hook

The cells were first seen microscopically by

Correct Answer :

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The unit of heredity is

The nucleus of a prokaryotic cell is represented by

Lysosomes were discovered by

Cellular components can be physically separated from each other by

The function of cristae in a mitochondrion is

In centriole, microtubules are arranged in this order:

Sequence of nucleotides in a DNA strand is CAT TAG CAT CAT GAC, what will be the base sequence in complementary strand of RNA?

Cells having large nuclei in proportion of cytoplasm are perhaps

In the mitochondria, cytochromes are localised in

Concept of unit membrane was given by

Hydroly tic enzymes are abundant in

The "chromosome theory of heredity" was given by

The nucleus of a plant cell was discovered by

Ribosomes are the centre of

Mitochondria were first observed in striated muscle cells by

Ribosomes of plastids and mitochondria are

According to cell theory

Physical basis of life is

In plant cell vacuole contains

Electron microscope has revealed the presence of

The term protoplasm was termed by

Chemical constitution of nucleus is

The maximum magnification possible with electron microscope is

Extranuclear DNA is found in

The cell size is dependent upon

There are 46 chromosomes in humans, of which

One angstrom is equal to

The cells were first seen microscopically by

Another name for ligase is

Function of Golgi bodies in plants is

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