List of top Life Science Questions asked in Common University Entrance Test

Vaccine is not available for which disease?
The basal portion of a mature ligule of Selaginella is called:
Identify the correct sequence of the given enzymes involved in the TCA cycle:
(A) Aconitase
(B) Fumarase
(C) Malate dehydrogenase
(D) α-ketoglutarate dehydrogenase
Choose the correct answer from the options given below:
Vessels are present in:
Which of the following combinations of statements are true about C4 cycle?
A. Malic acid formed in the chloroplast of mesophyll cells.
B. Malic acid is transported to the chloroplast of bundle sheath cells.
C. Pyruvic acid produced in mesophyll cells moves to the chloroplast of bundle sheath cells.
D. Malic acid is transported to the chloroplast of mesophyll cells.
Choose the correct answer from the options given below:
Adenoviruses are frequently used in gene delivery experiments. Their average genome size is 36,000 base pairs. Of their total DNA content, up to how much of the adenovirus genome can be replaced by foreign DNA?
Match List I with List II:
List I (Enzyme)List II (Reaction)
(A) DNase I(I) Produces single-stranded nicks in DNA
(B) RNase A(II) Degrades single-stranded RNA
(C) S1 nuclease(III) Degrades single-stranded DNA
(D) RNase H(IV) Cleaves the RNA strand of RNA-DNA hybrids
Choose the correct answer from the options given below:
Non-vascular land plants are called:
Following are the steps involved in processing of green tea:
A. Fermentation and drying
B. Twisting and rolling of leaves to facilitate break up
C. Initial removal of moisture content
D. Crushing, Tearing and Curling by CTC method
Choose the correct answer from the options given below:
The peptidyl transferase enzyme activity is located in the
Which one of the recombinant DNA techniques is almost obsolete?
What are the functions of topoisomerases?
Taxol medicine used in treatment of cancer is extracted from:
Arrange the steps involved in Gram-stain procedure:
(A) Staining with Crystal Violet
(B) Staining with Gram’s Iodine
(C) Decolorization
(D) Staining with Safranine
Choose the correct answer from the options given below:
The complete proteins produced by an organism at any one time is called:
The leaves used for wrapping tobacco in a ‘bidi’ are:
The propagation of action potential in myelinated nerve fiber is faster because of-
What percentage of genes are found in the human genome?
The lymphoid stem cells in the bone marrow form
(A) Natural killer cells
(B) Platelets
(C) B lymphocytes
(D) Neutrophils
Choose the correct answer from the options given below:
Lederberg and Tatum describe the phenomena of-
Choose the correct sequence of electron transport during electron transport chain of light reaction:
A. Pheophytin
B. Plastoquinone
C. Cytb6-f complex
D. Plastocyanin
Choose the correct answer from the options given below:
Which of the following are viral diseases?
(A) Yellow fever
(B) Hepatitis B
(C) Chickenpox
(D) Rabies
Choose the correct answer from the options given below:
Antibody formed immediately after infection is-
Gene gun is one of the popular physical delivery methods. Microparticles that are loaded to deliver DNA are made up of which metal?
Amino acid that serves as a precursor for formation of the pigment responsible for human skin color is-