In light reaction, plastoquinone facilitates the transfer of electrons from :
a.
PS-I to NADP
b.
PS-I to ATP synthase
c.
PS-II to Cytb6f complex
Correct Answer
d.
Cytb6f complex to PS-I
Step-by-Step AI Explanation
Verified Method
In the photosynthetic electron transport chain, electrons move from PS-II to plastoquinone (PQ), which then transfers them to the Cytochrome b6f complex.
Q2mcq
The sequence that controls the copy number of the linked DNA in the vector, is termed :
a.
Palindromic sequence
b.
Recognition site
c.
Selectable marker
d.
Ori site
Correct Answer
Step-by-Step AI Explanation
Verified Method
The 'Ori' (origin of replication) site is a sequence from where replication starts and controls the copy number of the linked DNA.
Q3mcq
The specific palindromic sequence which is recognized by EcoRI is :
a.
5' - CTTAAG - 3'
3' - GAATTC - 5'
b.
5' - GGATCC - 3'
3' - CCTAGG - 5'
c.
5' - GAATTC - 3'
3' - CTTAAG - 5'
Correct Answer
d.
5' - GGAACC - 3'
3' - CCTTGG - 5'
Step-by-Step AI Explanation
Verified Method
EcoRI recognizes the palindromic sequence 5'-GAATTC-3' and 3'-CTTAAG-5'.
Q4mcq
Identify the wrong statement with reference to immunity.
a.
Active immunity is quick and gives full response.
Correct Answer
b.
Foetus receives some antibodies from mother, it is an example for passive immunity.
c.
When exposed to antigen (living or dead) antibodies are produced in the host’s body. It is called “Active immunity”.
d.
When ready-made antibodies are directly given, it is called “Passive immunity”.
Step-by-Step AI Explanation
Verified Method
Active immunity is slow and takes time to give its full effective response, unlike passive immunity which provides immediate relief.
Q5mcq
Experimental verification of the chromosomal theory of inheritance was done by :
a.
Boveri
b.
Morgan
Correct Answer
c.
Mendel
d.
Sutton
Step-by-Step AI Explanation
Verified Method
While Sutton and Boveri proposed the chromosomal theory, Thomas Hunt Morgan provided the experimental verification using Drosophila melanogaster.
Q5mcq
Experimental verification of the chromosomal theory of inheritance was done by:
a.
Boveri
b.
Morgan
Correct Answer
c.
Mendel
d.
Sutton
Step-by-Step AI Explanation
Verified Method
Thomas Hunt Morgan provided the experimental verification of the chromosomal theory of inheritance using Drosophila melanogaster.
Q6mcq
Match the following concerning essential elements and their functions in plants : (a) Iron (i) Photolysis of water (b) Zinc (ii) Pollen germination (c) Boron (iii) Required for chlorophyll biosynthesis (d) Manganese (iv) IAA biosynthesis
a.
(iii)(iv)(ii)(i)
Correct Answer
b.
(iv)(i)(ii)(iii)
c.
(ii)(i)(iv)(iii)
d.
(iv)(iii)(ii)(i)
Step-by-Step AI Explanation
Verified Method
Iron is required for chlorophyll biosynthesis, Zinc for IAA biosynthesis, Boron for pollen germination, and Manganese for photolysis of water.
Q6mcq
Match the following concerning essential elements and their functions in plants:
(a) Iron (i) Photolysis of water
(b) Zinc (ii) Pollen germination
(c) Boron (iii) Required for chlorophyll biosynthesis
(d) Manganese (iv) IAA biosynthesis
Select the correct option:
a.
(a)(iii), (b)(iv), (c)(ii), (d)(i)
Correct Answer
b.
(a)(iv), (b)(i), (c)(ii), (d)(iii)
c.
(a)(ii), (b)(i), (c)(iv), (d)(iii)
d.
(a)(iv), (b)(iii), (c)(ii), (d)(i)
Step-by-Step AI Explanation
Verified Method
Iron is required for chlorophyll synthesis, Zinc for IAA biosynthesis, Boron for pollen germination, and Manganese for photolysis of water.
Q7mcq
In gel electrophoresis, separated DNA fragments can be visualized with the help of :
a.
Acetocarmine in UV radiation
b.
Ethidium bromide in infrared radiation
c.
Acetocarmine in bright blue light
d.
Ethidium bromide in UV radiation
Correct Answer
Step-by-Step AI Explanation
Verified Method
DNA fragments separated by gel electrophoresis are stained with Ethidium bromide and then visualized under UV radiation.
Q7mcq
In gel electrophoresis, separated DNA fragments can be visualized with the help of:
a.
Acetocarmine in UV radiation
b.
Ethidium bromide in infrared radiation
c.
Acetocarmine in bright blue light
d.
Ethidium bromide in UV radiation
Correct Answer
Step-by-Step AI Explanation
Verified Method
DNA fragments are visualized by staining with ethidium bromide followed by exposure to UV radiation, which causes the DNA to fluoresce orange.
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Match the organism with its use in biotechnology.
(a) Bacillus thuringiensis (i) Cloning vector
(b) Thermus aquaticus (ii) Construction of first rDNA molecule
(c) Agrobacterium tumefaciens (iii) DNA polymerase
(d) Salmonella typhimurium (iv) Cry proteins
a.
(a)(iii), (b)(ii), (c)(iv), (d)(i)
b.
(a)(iii), (b)(iv), (c)(i), (d)(ii)
c.
(a)(ii), (b)(iv), (c)(iii), (d)(i)
d.
(a)(iv), (b)(iii), (c)(i), (d)(ii)
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Match the following columns and select the correct option.
Column I: (a) Floating Ribs, (b) Acromion, (c) Scapula, (d) Glenoid cavity
Column II: (i) Located between second and seventh ribs, (ii) Head of the Humerus, (iii) Clavicle, (iv) Do not connect with the sternum
a.
(a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
b.
(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
c.
(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
d.
(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
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Match the following columns and select the correct option.
Column - I (a) Floating Ribs (b) Acromion (c) Scapula (d) Glenoid cavity
Column - II (i) Located between second and seventh ribs (ii) Head of the Humerus (iii) Clavicle (iv) Do not connect with the sternum
a.
(1)(iii)(ii)(iv)(i)
b.
(2)(iv)(iii)(i)(ii)
c.
(3)(ii)(iv)(i)(iii)
d.
(4)(i)(iii)(ii)(iv)
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Match the following columns and select the correct option.
Column - I (a) Gregarious, polyphagous pest (b) Adult with radial symmetry and larva with bilateral symmetry (c) Book lungs (d) Bioluminescence
Column - II (i) Asterias (ii) Scorpion (iii) Ctenoplana (iv) Locusta
a.
(1)(iii)(ii)(i)(iv)
b.
(2)(ii)(i)(iii)(iv)
c.
(3)(i)(iii)(ii)(iv)
d.
(4)(iv)(i)(ii)(iii)
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Match the following with respect to meiosis:
(a) Zygotene (i) Terminalization
(b) Pachytene (ii) Chiasmata
(c) Diplotene (iii) Crossing over
(d) Diakinesis (iv) Synapsis
a.
(1)(i)(ii)(iv)(iii)
b.
(2)(ii)(iv)(iii)(i)
c.
(3)(iii)(iv)(i)(ii)
d.
(4)(iv)(iii)(ii)(i)
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The transverse section of a plant shows following anatomical features:
(a) Large number of scattered vascular bundles surrounded by bundle sheath.
(b) Large conspicuous parenchymatous ground tissue.
(c) Vascular bundles conjoint and closed.
(d) Phloem parenchyma absent.
Identify the category of plant and its part:
a.
Dicotyledonous stem
b.
Dicotyledonous root
c.
Monocotyledonous stem
d.
Monocotyledonous root
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Match the following columns and select the correct option.
Column - I (a) Bt cotton (b) Adenosine deaminase deficiency (c) RNAi (d) PCR
Column - II (i) Gene therapy (ii) Cellular defence (iii) Detection of HIV infection (iv) Bacillus thuringiensis
a.
(1)(ii)(iii)(iv)(i)
b.
(2)(i)(ii)(iii)(iv)
c.
(3)(iv)(i)(ii)(iii)
d.
(4)(iii)(ii)(i)(iv)
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Match the following columns and select the correct option: Column I (a) Bt cotton (b) Adenosine deaminase deficiency (c) RNAi (d) PCR; Column II (i) Gene therapy (ii) Cellular defence (iii) Detection of HIV infection (iv) Bacillus thuringiensis
a.
(1)(ii)(iii)(iv)(i)
b.
(2)(i)(ii)(iii)(iv)
c.
(3)(iv)(i)(ii)(iii)
d.
(4)(iii)(ii)(i)(iv)
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Match the following diseases with the causative organism and select the correct option: Column I (a) Typhoid (b) Pneumonia (c) Filariasis (d) Malaria; Column II (i) Wuchereria (ii) Plasmodium (iii) Salmonella (iv) Haemophilus
a.
(1)(ii)(i)(iii)(iv)
b.
(2)(iv)(i)(ii)(iii)
c.
(3)(i)(iii)(ii)(iv)
d.
(4)(iii)(iv)(i)(ii)
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Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogenic action?
a.
(b), (c) and (d)
b.
only (d)
c.
only (a)
d.
(a) and (c)
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Match the trophic levels with their correct species examples in grassland ecosystem.
(a)Fourth trophic level (i)Crow
(b)Second trophic level (ii)Vulture
(c)First trophic level (iii)Rabbit
(d)Third trophic level (iv)Grass
Select the correct option :
a.
(1)(iv)(iii)(ii)(i)
b.
(2)(i)(ii)(iii)(iv)
c.
(3)(ii)(iii)(iv)(i)
d.
(4)(iii)(ii)(i)(iv)
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Select the correct events that occur during inspiration.
(a)Contraction of diaphragm
(b)Contraction of external inter-costal muscles
(c)Pulmonary volume decreases
(d)Intra pulmonary pressure increases
a.
(a), (b) and (d)
b.
only (d)
c.
(a) and (b)
d.
(c) and (d)
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Which of the following statements are true for the phylum-Chordata ?
(a)In Urochordata notochord extends from head to tail and it is present throughout their life.
(b)In Vertebrata notochord is present during the embryonic period only.
(c)Central nervous system is dorsal and hollow.
(d)Chordata is divided into 3 subphyla : Hemichordata, Tunicata and Cephalochordata.
a.
(a) and (b)
b.
(b) and (c)
c.
(d) and (c)
d.
(c) and (a)
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Match the following columns and select the correct option.
Column - I | Column - II
(a)Placenta | (i)Androgens
(b)Zona pellucida | (ii)Human Chorionic Gonadotropin (hCG)
(c)Bulbo-urethral glands | (iii)Layer of the ovum
(d)Leydig cells | (iv)Lubrication of the Penis
a.
(1)(iii)(ii)(iv)(i)
b.
(2)(ii)(iii)(iv)(i)
c.
(3)(iv)(iii)(i)(ii)
d.
(4)(i)(iv)(ii)(iii)
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Match the following columns and select the correct option.
Column - I | Column - II
(a) Placenta | (i) Androgens
(b) Zona pellucida | (ii) Human Chorionic Gonadotropin (hCG)
(c) Bulbo-urethral glands | (iii) Layer of the ovum
(d) Leydig cells | (iv) Lubrication of the Penis
a.
(iii)(ii)(iv)(i)
b.
(ii)(iii)(iv)(i)
c.
(iv)(iii)(i)(ii)
d.
(i)(iv)(ii)(iii)
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If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6×10^9 bp, then the length of the DNA is approximately :
a.
2.2 meters
b.
2.7 meters
c.
2.0 meters
d.
2.5 meters
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If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 × 10^9 bp, then the length of the DNA is approximately :
a.
2.2 meters
b.
2.7 meters
c.
2.0 meters
d.
2.5 meters
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Match the following columns and select the correct option.
Column - I | Column - II
(a) 6-15 pairs of gill slits | (i) Trygon
(b) Heterocercal caudal fin | (ii) Cyclostomes
(c) Air Bladder | (iii) Chondrichthyes
(d) Poison sting | (iv) Osteichthyes
a.
(iv)(ii)(iii)(i)
b.
(i)(iv)(iii)(ii)
c.
(ii)(iii)(iv)(i)
d.
(iii)(iv)(i)(ii)
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Match the following columns and select the correct option.
Column - I | Column - II
(a) Organ of Corti | (i) Connects middle ear and pharynx
(b) Cochlea | (ii) Coiled part of the labyrinth
(c) Eustachian tube | (iii) Attached to the oval window
(d) Stapes | (iv) Located on the basilar membrane
a.
(iv)(ii)(i)(iii)
b.
(i)(ii)(iv)(iii)
c.
(ii)(iii)(i)(iv)
d.
(iii)(i)(iv)(ii)
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Match the following columns and select the correct option.
Column I: (a) Organ of Corti, (b) Cochlea, (c) Eustachian tube, (d) Stapes
Column II: (i) Connects middle ear and pharynx, (ii) Coiled part of the labyrinth, (iii) Attached to the oval window, (iv) Located on the basilar membrane
a.
(a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
b.
(a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)
c.
(a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
d.
(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
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The following metal ion activates many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals.
a.
Calcium
b.
Potassium
c.
Iron
d.
Copper
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