Gonorrhoea, syphilis, and genital herpes are all classic examples of sexually transmitted infections (STIs). Malaria, filaria, and cancer are not primarily sexually transmitted.
Q3mcq
Which of the following would help in prevention of diuresis?
a.
Reabsorption of Na+ and water from renal tubules due to aldosterone
Correct Answer
b.
Atrial natriuretic factor causes vasoconstriction
c.
Decrease in secretion of renin by JG cells
d.
More water reabsorption due to undersecretion of ADH
Step-by-Step AI Explanation
Verified Method
Diuresis is increased urine production. Aldosterone promotes Na+ and water reabsorption, reducing urine volume, thus preventing diuresis.
Q4mcq
The process of growth is maximum during:
a.
Lag phase
b.
Senescence
c.
Dormancy
d.
Log phase
Correct Answer
Step-by-Step AI Explanation
Verified Method
In the log (exponential) phase, the rate of growth is maximum and constant.
Q5mcq
Which of the following is a basic amino acid?
a.
Alanine
b.
Tyrosine
c.
Lysine
Correct Answer
d.
Serine
Step-by-Step AI Explanation
Verified Method
Lysine is a basic amino acid due to the presence of an extra amino group in its side chain.
Q6mcq
In which of the following techniques, the embryos are transferred to assist those females who cannot conceive?
a.
GIFT and ZIFT
b.
ICSI and ZIFT
c.
GIFT and ICSI
d.
ZIFT and IUT
Correct Answer
Step-by-Step AI Explanation
Verified Method
ZIFT (Zygote Intra Fallopian Transfer) and IUT (Intra Uterine Transfer) are techniques where the embryo is transferred into the female body.
Q7mcq
Name the enzyme that facilitates opening of DNA helix during transcription.
a.
DNA helicase
b.
DNA polymerase
c.
RNA polymerase
Correct Answer
d.
DNA ligase
Step-by-Step AI Explanation
Verified Method
During transcription, DNA-dependent RNA polymerase is the enzyme that initiates the process, opens the DNA helix, and synthesizes RNA.
Q8mcq
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 x 10^9 bp, then the length of the DNA is approximately:
a.
2.5 meters
b.
2.2 meters
Correct Answer
c.
2.7 meters
d.
2.0 meters
Step-by-Step AI Explanation
Verified Method
Length = (Number of bp) * (Distance per bp) = (6.6 * 10^9) * (0.34 * 10^-9 m) = 2.244 meters, which is approximately 2.2 meters.
Q9mcq
The first phase of translation is:
a.
Recognition of DNA molecule
b.
Aminoacylation of tRNA
Correct Answer
c.
Recognition of an anti-codon
d.
Binding of mRNA to ribosome
Step-by-Step AI Explanation
Verified Method
The activation of amino acids and their attachment to their specific tRNAs (aminoacylation) is the charging step before translation begins on the ribosome.
Q10mcq
Flippers of Penguins and Dolphins are examples of:
a.
Convergent evolution
Correct Answer
b.
Industrial melanism
c.
Natural selection
d.
Adaptive radiation
Step-by-Step AI Explanation
Verified Method
Analogous organs (different structure, same function) like the flippers of penguins and dolphins demonstrate convergent evolution.
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The transverse section of a plant shows the following anatomical features: Large number of scattered vascular bundles surrounded by bundle sheath. Large conspicuous parenchymatous ground tissue. Vascular bundles conjoint and closed. Phloem parenchyma absent. Identify the category of plant and its part.
a.
Monocotyledonous root
b.
Dicotyledonous stem
c.
Dicotyledonous root
d.
Monocotyledonous stem
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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.
(1) (iv) (iii) (ii) (i)
b.
(2) (iii) (iv) (ii) (i)
c.
(3) (iv) (i) (ii) (iii)
d.
(4) (ii) (i) (iv) (iii)
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Match the following diseases with the causative organism and select the correct option.
Column-I (Disease) Column-II (Organism)
(a) Typhoid (i) Wuchereria
(b) Pneumonia (ii) Plasmodium
(c) Filariasis (iii) Salmonella
(d) Malaria (iv) Haemophilus
a.
(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
b.
(a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
c.
(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
d.
(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
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Match the following with respect to meiosis: (a) Zygotene, (b) Pachytene, (c) Diplotene, (d) Diakinesis with (i) Terminalization, (ii) Chiasmata, (iii) Crossing over, (iv) Synapsis.
a.
1) (iv) (iii) (ii) (i)
b.
2) (i) (ii) (iv) (iii)
c.
3) (ii) (iv) (iii) (i)
d.
4) (iii) (iv) (i) (ii)
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Match the trophic levels with their correct species examples in a 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
a.
(a)(b)(c)(d) -> (iii)(ii)(i)(iv)
b.
(a)(b)(c)(d) -> (iv)(iii)(ii)(i)
c.
(a)(b)(c)(d) -> (i)(ii)(iii)(iv)
d.
(a)(b)(c)(d) -> (ii)(iii)(iv)(i)
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Match the following columns and select the correct option.
Column I: (a) Placenta, (b) Zona pellucida, (c) Bulbo-urethral glands, (d) Leydig cells
Column II: (i) Androgens, (ii) Human Chorionic Gonadotropin (hCG), (iii) Layer of the ovum, (iv) Lubrication of the Penis
a.
(1) (i) (iv) (ii) (iii)
b.
(2) (iii) (ii) (iv) (i)
c.
(3) (ii) (iii) (iv) (i)
d.
(4) (iv) (iii) (i) (ii)
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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.
(iv) (i) (ii) (iii)
b.
(iii) (ii) (i) (iv)
c.
(ii) (i) (iii) (iv)
d.
(i) (iii) (ii) (iv)
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