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4

In centriole, microtubules are arranged in this order:

A. 9 + 2

B. 9 + 4

C. 9 + 0

D. 9 + 1

Correct Answer :

C. 9 + 0


Related Questions

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4

The organelles for fat synthesis are

A. glyoxisomes

B. lomasomes

C. spherosomes

D. lysosomes

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Hydroly tic enzymes are abundant in

A. peroxisomes

B. microsomes

C. lysosome

D. lomasome

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4

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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4

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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4

Extranuclear DNA is found in

A. chloroplast

B. ribosomes

C. endoplasmatic reticulum

D. golgi apparatus

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One of the following is a single-membraned structure:

A. Chloroplast

B. Nucleus

C. Mitochondria

D. Lysosome

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4

The cells were first seen microscopically by

A. Scheiden

B. Schwann

C. Leeuwenhock

D. Robert Hook

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In electron microscope the source of light used is

A. sunlight

B. UV-light

C. far red

D. beam of electrons

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Electron microscope has revealed the presence of

A. ribosomes

B. chromosomes

C. chloroplast

D. leucoplast

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Ribosomes of plastids and mitochondria are

A. 55S to 70S

B. 80S

C. 40S

D. 60S

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4

The largest cell organelle is

A. nucleus

B. endoplasmic reticulum

C. chloroplast

D. mitochondria

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Which structure performs a similar function in both plant and animal cell

A. Ribosomes

B. Contractile vacuoles

C. Chloroplasts

D. Cell wall

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4

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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4

The cell size is dependent upon

A. oxygen supply

B. nutrition

C. regulation by nucleus

D. all of die above

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Physical basis of life is

A. nucleus

B. cell

C. protoplasm

D. nutrition

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The unit of heredity is

A. gene

B. centromere

C. telomere

D. chromosome

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4

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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4

Janus-green-B is used for staining

A. ribosomes

B. chloroplast

C. mitochondrion

D. all of these

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4

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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Lysosomes were discovered by

A. Porter

B. DeDuve

C. Palade

D. Golgi

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Nitrogenous bases of RNA are

A. uracil and adenine

B. thymine and uracil

C. uracil, adenine, guanine and cytosine

D. thymine, adenine, guanine and cytosine

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4

Another name for ligase is

A. joining enzyme

B. RNA polymerase

C. nuclease

D. none of these

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4

Granal thylakoids occur in a

A. chloroplast

B. mitochondrion

C. microtubules

D. crista

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4

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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Cell membranes are composed mainly of

A. sugar and proteins

B. lipids and proteins

C. starch and lipids

D. sugar and lipids

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4

In the mitochondria, cytochromes are localised in

A. matrix

B. outer membrane

C. inner membrane

D. none of these

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In plant cell vacuole contains

A. water

B. cytoplasm

C. air

D. water and dissolved substance

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4

One angstrom is equal to

A. 10-8cm

B. 10-8m

C. 10-6m

D. 10-7m

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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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Ribosomes are the centre of

A. respiration

B. photosynthesis

C. protein synthesis

D. fat synthesis