specialized granules responsible for colouration of cells
structures responsible for organizing the shape of the organism.
inclusion bodies lying free inside the cells for carrying out various metabolic activities.
internal membrane system which becomes extensive and complex in photosynthetic bacteria.
D. internal membrane system which becomes extensive and complex in photosynthetic bacteria.
helps control the movement of substance in and out of the cell
passes information from the parent cell to newly formed cell
maintains the proper shape of the cell and serves as a protective barrier
helps the cell to make food with the help of chlorophyll and sunlight
Both statements -1 and statement - 2 are true and statement - 2 is the correct explanation of statement - 1.
Both statements -1 and statement - 2 are true but statement - 2 is not the correct explanation of statement - 1.
Statement -1 is true and statement - 2 is false.
Statement -1 is false and statement - 2 is true.
A Telocentric chromosome, B Acrocentric chromosome, C Submetacentric chromosome, D Metacentric chromosome
A Acrocentric chromosome, B Telocentric chromosome, C Metacentric chromosome, D Submetacentric chromosome
A Submetacentric chromosome, B Metacentric chromosome, C Telocentric chromosome, D Acrocentric chromosome
A Metacentric chromosome, B Submetacentric chromosome, C Acrocentric chromosome, D Telocentric chromosome.
SER
Lysosome
Golgi apparatus
Mitochondria
(i) and (ii)
(i), (ii), (iii) and (iv)
(i) and (iv)
(ii) and (iii)
Golgi apparatus Protein synthesis
Golgi apparatus Formation of glycolipids
Rough endoplasmic reticulum Protein synthesis
Rough endoplasmic reticulum Formation of glycoproteins
The ribosomes of a polysome translate the mRNA into protein.
Mitochondria divide by fragmentation.
All cell arise from pre-existing cells.
The lipid component of the membrane mainly consists of phosphoglycerides.
type of movement and placement.
location and mode of functioning.
microtubular structure and function.
microtubular organization and type of movement.
Column-I | Column-II |
---|---|
A. Tonoplast | I. Contain digestive enzyme |
B. Contractile vacuole | II. Store metabolic gases |
C. Food vacuole | III. Excretion |
D. Air vacuole | IV. Transport of ions in plants |
A IV; B III; C I; D II
A II; B III; C IV; D I
A IV; B II; C III; D I
A I; B III; C II; D IV
all animal cells.
some animal cells.
all plant cells.
all plant cells and euglenoides.
Golgi apparatus
Lysosomes
Endoplasmic reticulum
Vacuoles
production of ATP
requirement of energy
production of toxin
release of energy
It helped to study the working of cells.
It helped in curing diseases caused by cell.
It helped in restating the earlier theories on cell.
It helped in introducing the use of microscopes to study cell.
Active transport
Facilitated diffusion
Simple diffusion
Na+ K+ pump
Column - I | Column - II |
---|---|
A. RER | I. Intracellular and extracellular digestion |
B. Cell wall | II. Provide structural support to the cell |
C. Flagella | III. Protein synthesis and secretion |
D. Lysosomes | IV Responsible for cell movement |
A III, B II, C IV, D I
A II, B III, C IV, D I
A I, B III, C II, D IV
A IV, B II, C III, D I
(i), (ii), (iii) and (iv)
Only (i) and (ii)
Only (iv)
None of the above
excretion
secretion
ATP synthesis
RNA synthesis
cilia
flagella
both (a) and (b)
centriole
Column-I | Column-II |
---|---|
A. Bacteria without walls | I. Lysosome |
B. Small circular DNA | II. Mycoplasma cells |
C. Flattened sacs in | III. Thylakoid a chloroplast |
D. A vesicle in which | IV. Plasmid hydrolytic enzymes are stored |
A III; B IV; C II; D I
A II; B IV; C III; D I
A I; B II; C III; D IV
A IV; B III; C I ; D II
structurally different but functionally similar.
structurally as well as functionally different.
structurally similar but functionally different.
structurally different but functionally similar.
terminal part of the chromosome beyond secondary constriction.
terminal part of the chromosome beyond primary constriction.
terminal part of chromosome beyond tertiary constriction.
none of the above
requires energy.
always requires input of ATP.
moves molecules against a concentration gradient.
both (a) and (c)
inner surfaces
outer surfaces
phospholipid matrix
inner and outer surfaces
42, 50
52, 40
50, 50
60, 40
protein storing plastids.
coloured plastids.
stacks of thylakoids.
individual thylakoids present in stroma.
50S and 30S subunits unite to form 70S ribosomes.
Polysome/polyribosome consists of many ribosomes only.
Ribosome is the site of protein synthesis.
Polysome indicate the synthesis of identical poolypeptide in multiple copies.
A - (viii), B - (v), C - (vii), D - (iii), E - (iv)
A - (i), B - (iv), C - (vii), D - (vi), E - (iii)
A - (vi), B - (v), C - (iv), D - (vii), E - (i)
A - (v), B - (i), C - (iii), D - (ii), E - (iv)
Column-I | Column-II |
---|---|
A. Leeuwenhoek | I. First saw and described a living cell |
B. Robert Brown | II. Presence of cell wall is unique to plant cells |
C. Schleiden | III. Discovered the nucleus |
D. Schwann | IV. All plants are composed of different kind of cells |
A I, B III, C IV, D II
A I, B III, C II, D IV
A III, B I, C IV, D II
A I, B IV, C II, D III
(i), (ii), (iii)
All of the above
(ii) & (iv)
None of the above
increasing the number of phospholipids with unsaturated hydrocarbon tails.
increasing the proportion of integral proteins.
increasing concentration of cholesterol in membrane.
increasing the number of phospholipids with saturated hydrocarbon tail.