The nucleus of a plant cell was discovered by

Question

The nucleus of a plant cell was discovered by

A. Robert Brown

B. Huxley

C. Virchow

D. Hammerling

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Another name for ligase is

A. joining enzyme

B. RNA polymerase

C. nuclease

D. none of these

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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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Mitochondria were first observed in striated muscle cells by

A. Benda

B. Kolliker

C. Altmann

D. Robert Hooke

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Intake of liquid food by formation of food vacuoles is called

A. pinocytocis

B. phagocytosis

C. absorption

D. imbibition

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"The substance of cells is living " was firs suggested by

A. Purkinje

B. Lamarck

C. Dutrochet

D. Dujardin

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The photosynthetic units are known as

A. dictyosomes

B. quantosomes

C. microsomes

D. ribosomes

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In plant cell vacuole contains

A. water

B. cytoplasm

C. air

D. water and dissolved substance

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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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Janus-green-B is used for staining

A. ribosomes

B. chloroplast

C. mitochondrion

D. all of these

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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 cells were first seen microscopically by

A. Scheiden

B. Schwann

C. Leeuwenhock

D. Robert Hook

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Lysosomes were discovered by

A. Porter

B. DeDuve

C. Palade

D. Golgi

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Carbohydrate is synthesized from fat within

A. lysosome

B. spherosome

C. glyoxysome

D. lomasome

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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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The unit of heredity is

A. gene

B. centromere

C. telomere

D. chromosome

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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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The organelles for fat synthesis are

A. glyoxisomes

B. lomasomes

C. spherosomes

D. lysosomes

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Park and Biggins receive credit for discovery of

A. oxisomes

B. quantosomes

C. lysosomes

D. microsomes

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Electron microscope has revealed the presence of

A. ribosomes

B. chromosomes

C. chloroplast

D. leucoplast

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Cell theory was proposed by

A. M.J. Schleiden and Theodore Schwann in 1838 and 1839 respectively

B. M.J. Schleiden and Theodore Schwann in 1939 only

C. Theodore Schwann and M.J. Schleiden in 1938 only

D. T.J. Schleiden and M.J. Schwann in 1838 only.

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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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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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Physical basis of life is

A. nucleus

B. cell

C. protoplasm

D. nutrition

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Ribosomes of plastids and mitochondria are

A. 55S to 70S

B. 80S

C. 40S

D. 60S

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Cell organelle which has electron transport system is

A. nucleus

B. centriole

C. nucleolus

D. mitochondria

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Unstained living tissues of a cell can be examined by

A. phase contrast microscope

B. electron microscope

C. light microscope

D. autoradiography

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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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The largest cell organelle is

A. nucleus

B. endoplasmic reticulum

C. chloroplast

D. mitochondria

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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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One of the following is a single-membraned structure:

A. Chloroplast

B. Nucleus

C. Mitochondria

D. Lysosome

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Accepted Answer

A. Robert Brown

The nucleus of a plant cell was discovered by

Correct Answer :

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Mitochondria were first observed in striated muscle cells by

Intake of liquid food by formation of food vacuoles is called

"The substance of cells is living " was firs suggested by

The photosynthetic units are known as

In plant cell vacuole contains

The nucleus of a plant cell was discovered by

Janus-green-B is used for staining

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The cells were first seen microscopically by

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Cells having large nuclei in proportion of cytoplasm are perhaps

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Electron microscope has revealed the presence of

Cell theory was proposed by

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Unstained living tissues of a cell can be examined by

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The largest cell organelle is

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