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Cell theory was given by
(1) Anton van Leeuwenhoek
(2) Robert Hooke
(3) Schleiden and Schwann
(4) Robert Brown and Rudolf Virchow

Which of the following cell organelles is non-membrane bound and found in both prokaryotes and eukaryotes?
(1) Lysosomes
(2) Ribosomes
(3) Centrioles
(4) Mitochondria

Which type of vacuoles provide buoyancy to bacteria?
(1) Sap vacuoles
(2) Contractile vacuoles
(3) Gas vacuoles
(4) Food vacuoles

The main chemical component of fungal cell wall is
(1) Peptidoglycan
(2) Chitin
(3) Hemicellulose
(4) Pectin

Which of the following cell organelles is not considered as a part of an endomembrane system?
(1) Mitochondria
(2) ER
(3) Golgi complex
(4) Lysosomes

The type of ribosomes found inside the mitochondria is
(1) 90S
(2) 60S
(3) 80S
(4) 70S

The plastids which store proteins are
(1) Aleuroplasts
(2) Elaioplasts
(3) Amyloplasts
(4) Chromoplasts

The chromosomes having centromere at terminal end are called
(1) Sub-metacentric
(2) Metacentric
(3) Telocentric
(4) Acrocentric

Each centriole has a cart wheel organisation having a whorl of tubulin fibrils at periphery. These peripheral fibrils are composed of how many microtubules?
(1) 11
(2) 18
(3) 9
(4) 27

Consider the following statements and choose the incorrect option
a. Large and more numerous nucleoli are present in cells actively carrying out protein synthesis.
b. Nuclear pores allow bidirectional movement of molecules.
c. Cytoskeleton is a glycolipid structure for mechanical support, motility and maintenance of the shape of the cell.
d. Steroidal hormones are synthesized by Golgi complex.
(1) a and b
(2) b and c
(3) c and d
(4) a and d

Eukaryotic cells have a well organised nucleus and
a. Both 70S and 80S types of ribosomes
b. Flagella associated with 9 + 2 organisation
c. Shows cytoplasmic streaming
d. Their DNA is complexed with histones to constitute the chromatin
(1) All are correct
(2) Only a is incorrect
(3) Only c and d are correct
(4) Both b and c are incorrect

9+2 organisation is present in
(1) Flagella of bacteria
(2) Flagella and cilia of eukaryotic cell
(3) Basal body
(4) Centriole and basal body

Which structures perform the function of mitochondria in bacteria?
(1) Nucleoid
(2) Ribosomes
(3) Cell wall
(4) Mesosomes

The solid linear cytoskeletal elements having a diameter of 6nm and made up of a single type of monomer are known as
(1) Microtubules
(2) Microfilaments
(3) Intermediate filaments
(4) Lamins

The Golgi complex plays a major role
(1) In digesting proteins and carbohydrates
(2) As energy transferring organelles
(3) In post translational modification of proteins and glycosidation of lipids
(4) In trapping the light and transforming it into chemical energy

Which one of the following does not differ in E.coli and Chlamydomonas? 
(1) Cell wall
(2) Cell membrane
(3) Ribosomes
(4) Chromosomal organization

Select the correct statement from the following regarding cell membrane
(1) Lipids are arranged in a bilayer with polar heads towards the inner part
(2) Fluid mosaic model of cell membrane was porposed by Singer and Nicolson
(3) Na⁺ and K⁺ ions move across cell membrane by passive transport
(4) Proteins make up 60 to 70% of the cell membrane

Which one of the following cellular parts is correctly described?
(1) Thylakoids-flattened membranous sacs forming the grana of chloroplasts
(2) Centrioles - sites for active RNA synthesis
(3) Ribosomes-those on chloroplasts are larger (80S) while those in the cytoplasm are smaller (70S)
(4) Lysosomes-optimally active at a pH of about 8.5

The main arena of various types of activities of a cell is
(1) Nucleus
(2) Plasma membrane
(3) Mitochondria
(4) Cytoplasm

Which one of the following statements about the particular entity is true?
(1) Centromere is found in animal cells, which produces aster during cell division
(2) The gene for producing insulin is present in every body cell
(3) Nucleosome is formed of nucleotides
(4) DNA consists of a core of eight histones

Plasmodesmata are
(1) Locomotory structures
(2) Membranes connecting the nucleus with plasmalemma
(3) Connections between adjacent cells
(4) Lignified cemented layers between cells

Polysome is formed by
(1) Ribosomes attached to each other in a linear arrangement
(2) Several ribosomes attached to a single mRNA
(3) Many ribosomes attached to a strand ofendoplasmic reticulum
(4) A ribosome with several subunits

Keeping in view the ‘fluid mosaic model’ for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?
(1) Neither lipids nor proteins can flip-flop
(2) Both lipids and proteins can flip-flop
(3) While lipids can rarely flip-flop, proteins cannot
(4) While proteins can flip-flop, lipids cannot

The two sub-units of ribosome remain united at a critical ion level of
(1) Calcium
(2) Copper
(3) Manganese
(4) Magnesium

Which of the following statements regarding mitochondrial membrane is not correct?
(1) The outer membrane is permeable to all kinds of molecules
(2) The enzymes of the electron transfer chain are embedded in the outer membrane
(3) The inner membrane is highly convoluted forming a series of infoldings
(4) The outer membrane resembles a sieve

Why is a capsule advantageous to a bacterium?
(1) It allows the bacterium to attach to the surface
(2) It protects the bacterium from desiccation
(3) It provides means of locomotion
(4) It allows bacterium to hide from host's immune system

Which one of the following structures between two adjacent cells is an effective transport pathway?
(1) Plasmalemma
(2) Plasmodesmata
(3) Plastoquinones
(4) Endoplasmic reticulum

Which cell organelle is concerned with glycosylation of protein?
(1) Ribosome
(2) Peroxisome
(3) Endoplasmic reticulum
(4) Mitochondria

Microtubule is involved in the
(1) Muscle contraction
(2) Membrane architecture
(3) Cell division
(4) DNA recognition

The maximum formation of mRNA occurs in
(1) Ribosome
(2) Nucleoplasm
(3) Cytoplasm
(4) Nucleolus

The eukaryotic genome differs from the prokaryotic genome because
(1) The DNA is complexed with histone in prokaryotes
(2) The DNA is circular and single stranded in prokaryotes
(3) Repetitive sequences are present in eukaryotes
(4) Genes in the former case are organized into operons

Function of telomeres in nucleus is
(1) Poleward movement
(2) To initiate the RNA synthesis
(3) To seal the ends of chromosome
(4) To recognise the homologous chromosome

Which of the following occurs more than one and less than five in a chromosome?
(1) Chromatid
(2) Chromosome
(3) Centromere
(4) Telomere

Genetically inactive and highly condensed region with tightly packed DNA is
(1) Euchromatin
(2) Heterochromatin
(3) Chromatin
(4) Chromosome