MERIT YARD

[Cell: The Unit of Life - VVI MCQs - MERIT YARD]

Question 1 / 40Who first saw and described a live cell?

A) Robert Brown

B) Robert Hooke

C) Anton von Leeuwenhoek

D) Rudolf Virchow

Question 2 / 40The concept 'Omnis cellula-e cellula' was given by:

A) Schleiden

B) Schwann

C) Rudolf Virchow

D) Aristotle

Question 3 / 40Which of the following is the smallest cell?

A) Mycoplasma

B) Bacteria

C) Ostrich egg

D) RBC

Question 4 / 40The 'Fluid Mosaic Model' of cell membrane was proposed by:

A) Camillo Golgi

B) Singer and Nicolson

C) Watson and Crick

D) Robert Brown

Question 5 / 40Which organelle is known as the 'Powerhouse of the cell'?

A) Ribosome

B) Mitochondria

C) Golgi apparatus

D) Lysosome

Question 6 / 40Non-membranous organelle found in both prokaryotic and eukaryotic cells:

A) Ribosome

B) Mitochondria

C) Chloroplast

D) Vacuole

Question 7 / 40The main site for lipid synthesis in the cell is:

A) RER

B) SER

C) Nucleus

D) Golgi body

Question 8 / 40Lysosomes are rich in:

A) Oxidases

B) Hydrolytic enzymes

C) Lipases only

D) Hormones

Question 9 / 40Which of the following is double membrane-bound organelle?

A) Lysosome

B) Chloroplast

C) Ribosome

D) Centriole

Question 10 / 40The infoldings of the inner mitochondrial membrane are called:

A) Grana

B) Cristae

C) Cisternae

D) Thylakoids

Question 11 / 40Ribosomes of eukaryotes are of which type?

A) 70S

B) 80S

C) 50S

D) 30S

Question 12 / 40The site for active ribosomal RNA (rRNA) synthesis is:

A) Cytoplasm

B) Nucleolus

C) Mitochondria

D) SER

Question 13 / 40The detailed structure of the membrane was studied only after the advent of:

A) Compound microscope

B) Electron microscope

C) X-ray crystallography

D) Light microscope

Question 14 / 40Cell wall of algae is made of:

A) Cellulose, Galactans and Mannans

B) Hemicellulose and Pectin

C) Chitin

D) Peptidoglycan

Question 15 / 40Middle lamella is mainly composed of:

A) Magnesium pectate

B) Calcium pectate

C) Sodium pectate

D) Lignin

Question 16 / 40In which organelle does the formation of glycoproteins and glycolipids occur?

A) Vacuole

B) Golgi apparatus

C) Lysosome

D) Plastid

Question 17 / 40Leucoplasts which store oils and fats are:

A) Amyloplasts

B) Elaioplasts

C) Aleuroplasts

D) Chromoplasts

Question 18 / 40Ribosomes were first observed under the electron microscope by:

A) Camillo Golgi

B) George Palade

C) Robert Brown

D) Boveri

Question 19 / 40The 70S ribosome has two subunits:

A) 50S and 30S

B) 60S and 40S

C) 40S and 30S

D) 50S and 40S

Question 20 / 40Which of the following lacks a membrane?

A) Vacuole

B) Nucleolus and Centrioles

C) Golgi body

D) Mitochondria

Question 21 / 40The space inside the thylakoids is called:

A) Stroma

B) Lumen

C) Matrix

D) Grana

Question 22 / 40Centrioles show an arrangement of:

A) 9+2

B) 9+0

C) 7+2

D) 9+1

Question 23 / 40Primary constriction in every chromosome is called:

A) Telomere

B) Centromere

C) Kinetochore

D) Satellite

Question 24 / 40Chromosomes having centromere at the tip are:

A) Metacentric

B) Telocentric

C) Acrocentric

D) Sub-metacentric

Question 25 / 40The function of Mesosomes in bacteria is:

A) DNA replication

B) Respiration

C) Cell wall formation

D) All of these

Question 26 / 40Plasmids are:

A) Linear DNA

B) Extra-chromosomal circular DNA

C) RNA molecules

D) Viral DNA

Question 27 / 40Chlorophyll pigments are present in:

A) Thylakoids

B) Stroma

C) Inner membrane

D) Ribosomes

Question 28 / 40A chromosome with centromere in the middle is:

A) Metacentric

B) Telocentric

C) Acrocentric

D) Sub-metacentric

Question 29 / 40Protein synthesis occurs on:

A) SER

B) RER

C) Lysosomes

D) Vacuoles

Question 30 / 40Nuclear pore allows the movement of:

A) RNA and Proteins

B) DNA only

C) Lipids only

D) None

Question 31 / 40The tonoplast is the membrane of:

A) Mitochondria

B) Vacuole

C) Chloroplast

D) Lysosome

Question 32 / 40Gas vacuoles are found in:

A) Blue-green algae

B) Higher plants

C) Fungi

D) Animals

Question 33 / 40Which of the following is not a part of the endomembrane system?

A) ER

B) Golgi complex

C) Mitochondria

D) Vacuole

Question 34 / 40Size of a typical bacterium is:

A) 1-2 μm

B) 10-20 μm

C) 100 μm

D) 0.02 μm

Question 35 / 40Polysome is a chain of:

A) Ribosomes attached to mRNA

B) DNA and RNA

C) Proteins

D) Vacuoles

Question 36 / 40In plant cells, the cell wall is:

A) Fully permeable

B) Impermeable

C) Semi-permeable

D) Selective

Question 37 / 40The eukaryotic flagella show which arrangement?

A) 9+2

B) 9+0

C) 7+2

D) 4+4

Question 38 / 40The genomic DNA of a prokaryote is:

A) Circular and Naked

B) Linear and Naked

C) Linear with Histones

D) Absent

Question 39 / 40Who discovered the Nucleus?

A) Robert Brown

B) Robert Hooke

C) Camillo Golgi

D) Palade

Question 40 / 40The cytoplasm is the main arena of:

A) Cellular activities

B) DNA storage

C) Only photosynthesis

D) Only excretion