Home MCQs Assertion and Reasons for AIIMS MCQs 2

Assertion and Reasons for AIIMS MCQs 2

by Ramneet Kaur

Assertion and Reasons for AIIMS MCQs 2


#1 Assertion: Human protein (alpha-1-trypsin) is used to treat emphysema. Reason: Cigarette smoking inhibits the action of alpha-1-trypsin.

#2 Assertion: The SCID patient can be cured by introduction of gene coding for ADA, into their lymphocytes with the help of retrovirus. Reason: The lymphocytes produced by these cells contain functional ADA gene & reactivate the victim’s immune system for life.

#3 Assertion: LSD and marijuana are clinically used as analgesics. Reason: Both these drugs suppress brain function.

#4 Assertion: In recombinant DNA technology, human genes are often transferred into bacteria or yeast. Reason: Both bacteria & yeast multiply very fast to form huge populations which express the desired genes.

#5 Assertion: Agrobacterium tumefaciens is popular in genetic engineering because this bacterium is associated with the roots of all cereal & pulse crops. Reason: A gene incorporated in the bacterial chromosomal genome gets automatically transferred to the crop with which the bacterium is associated.

#6 Assertion: Acetylcholine participates in the nerve impulse transmission across a synapse. Reason: Acetylcholine is secreted by adrenergic fibres.

#7 Assertion: In the descending limb of Henle loop, the urine is hypertonic, while in the ascending loop, the urine is hypotonic. Reason: Descending limb is impermeable to Na ions, while ascending limb is impermeable to water.

#8 Assertion: Cartilage and bone are rigid connective tissues. Reason: Blood is connective tissue in which plasma is the matrix.

#9 Assertion: Ocean act as global sink for carbon dioxide. Reason: Maximum photosynthetic carbon dioxide reduction occurs by oceanic planktons.

#10 Assertion: Beads on string structure in chromatin is packaged to form chromatin fibers that are further coiled and condensed at metaphase to form chromosomes. Reason: Non-histone proteins are synthesized during metaphase only, these are essential for this higher level of packaging.


You may also like

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Lets make Biology simple

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Accept Read More


Join Our Newsletter Today!

Stay updated with all latest MCQs, Topic Summary, Mnemonics, Videos, tips & tricks for Biology.

Send this to a friend

Skip to toolbar