Home
Current Affairs January 2024

What is the correct answer?

4

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.

Correct Answer :

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


Related Questions

What is the correct answer?

4

Mitochondria were first observed in striated muscle cells by

A. Benda

B. Kolliker

C. Altmann

D. Robert Hooke

What is the correct answer?

4

Concept of unit membrane was given by

A. Danielli and Davson

B. Singer and Davson

C. Buvat

D. Robertson

What is the correct answer?

4

Park and Biggins receive credit for discovery of

A. oxisomes

B. quantosomes

C. lysosomes

D. microsomes

What is the correct answer?

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

What is the correct answer?

4

The cell size is dependent upon

A. oxygen supply

B. nutrition

C. regulation by nucleus

D. all of die above

What is the correct answer?

4

Cellular components can be physically separated from each other by

A. centrifugation

B. radioactive tracers

C. microscopy

D. chromatography

What is the correct answer?

4

In plant cell vacuole contains

A. water

B. cytoplasm

C. air

D. water and dissolved substance

What is the correct answer?

4

Cell membranes are composed mainly of

A. sugar and proteins

B. lipids and proteins

C. starch and lipids

D. sugar and lipids

What is the correct answer?

4

Carbohydrate is synthesized from fat within

A. lysosome

B. spherosome

C. glyoxysome

D. lomasome

What is the correct answer?

4

The discoverers of electron microscope are

A. Huxley and Virchow

B. Leeuwenhok and Hooke

C. Knoll and Ruska

D. Farmer and Moore

What is the correct answer?

4

Ribosomes are the centre of

A. respiration

B. photosynthesis

C. protein synthesis

D. fat synthesis

What is the correct answer?

4

The photosynthetic units are known as

A. dictyosomes

B. quantosomes

C. microsomes

D. ribosomes

What is the correct answer?

4

In centriole, microtubules are arranged in this order:

A. 9 + 2

B. 9 + 4

C. 9 + 0

D. 9 + 1

What is the correct answer?

4

The largest cell organelle is

A. nucleus

B. endoplasmic reticulum

C. chloroplast

D. mitochondria

What is the correct answer?

4

Unstained living tissues of a cell can be examined by

A. phase contrast microscope

B. electron microscope

C. light microscope

D. autoradiography

What is the correct answer?

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

What is the correct answer?

4

Granal thylakoids occur in a

A. chloroplast

B. mitochondrion

C. microtubules

D. crista

What is the correct answer?

4

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

A. Ribosomes

B. Contractile vacuoles

C. Chloroplasts

D. Cell wall

What is the correct answer?

4

Physical basis of life is

A. nucleus

B. cell

C. protoplasm

D. nutrition

What is the correct answer?

4

One angstrom is equal to

A. 10-8cm

B. 10-8m

C. 10-6m

D. 10-7m

What is the correct answer?

4

Ribosomes of plastids and mitochondria are

A. 55S to 70S

B. 80S

C. 40S

D. 60S

What is the correct answer?

4

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

What is the correct answer?

4

Chemical constitution of nucleus is

A. DNA and proteins

B. RNA and proteins

C. DNA, RNA and proteins

D. RNA arid DNA

What is the correct answer?

4

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.

What is the correct answer?

4

Cell organelle which has electron transport system is

A. nucleus

B. centriole

C. nucleolus

D. mitochondria

What is the correct answer?

4

The organelles for fat synthesis are

A. glyoxisomes

B. lomasomes

C. spherosomes

D. lysosomes

What is the correct answer?

4

 The function of cristae in a mitochondrion is

A. electron transport and ATP synthesis

B. carbon assimilation

C. intake of o2

D. elimination of co2

What is the correct answer?

4

One of the following is a single-membraned structure:

A. Chloroplast

B. Nucleus

C. Mitochondria

D. Lysosome

What is the correct answer?

4

Hydroly tic enzymes are abundant in

A. peroxisomes

B. microsomes

C. lysosome

D. lomasome

What is the correct answer?

4

Intake of liquid food by formation of food vacuoles is called

A. pinocytocis

B. phagocytosis

C. absorption

D. imbibition