A. ribosomes

B. chloroplast

C. mitochondrion

D. all of these

A. joining enzyme

B. RNA polymerase

C. nuclease

D. none of these

A. A. Kornberg

B. S.Ochoa

C. H. Khorana

D. Nirenberg

A. Huxley and Virchow

B. Leeuwenhok and Hooke

C. Knoll and Ruska

D. Farmer and Moore

A. Dujardin

B. Purkinje

C. VonMohl

D. Malpighi

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

A. centrifugation

B. radioactive tracers

C. microscopy

D. chromatography

A. nucleus

B. endoplasmic reticulum

C. chloroplast

D. mitochondria

A. a well-defined nuclear membrane

B. nucleolus only

C. double stranded circular DNA

D. single stranded DNA

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

A. 55S to 70S

B. 80S

C. 40S

D. 60S

A. water

B. cytoplasm

C. air

D. water and dissolved substance

A. dictyosomes

B. quantosomes

C. microsomes

D. ribosomes

A. 200 times

B. 2000 times

C. 20,000 times

D. 200,000 times

A. respiration

B. photosynthesis

C. protein synthesis

D. fat synthesis

A. Danielli and Davson

B. Singer and Davson

C. Buvat

D. Robertson

A. sunlight

B. UV-light

C. far red

D. beam of electrons

A. peroxisomes

B. microsomes

C. lysosome

D. lomasome

A. nucleus

B. cell

C. protoplasm

D. nutrition

A. ribosomes

B. chloroplast

C. mitochondrion

D. all of these

A. Benda

B. Kolliker

C. Altmann

D. Robert Hooke

A. ${10}^{-8}$cm

B. ${10}^{-8}$m

C. ${10}^{-6}$m

D. ${10}^{-7}$m

A. Chloroplast

B. Nucleus

C. Mitochondria

D. Lysosome

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.

A. nucleus

B. centriole

C. nucleolus

D. mitochondria

A. transport of mutabolities

B. translocation of enzymes

C. synthesis of cell-wall

D. production of microbodies

A. phase contrast microscope

B. electron microscope

C. light microscope

D. autoradiography

A. oxygen supply

B. nutrition

C. regulation by nucleus

D. all of die above

A. sugar and proteins

B. lipids and proteins

C. starch and lipids

D. sugar and lipids

A. ribosomes

B. chromosomes

C. chloroplast

D. leucoplast

A. dying

B. dehydrated

C. active

D. dividing