List of top Biology Questions

Match the diseases in Group I with their causative organisms in Group II 
       Group I                                Group II 
(P) Syphilis                         (1) Shigella dysenteriae 
(Q) Bacillary dysentery       (2) Bordetella pertussis 
(R) Gas gangrene               (3) Treponema pallidum 
(S) Whooping cough         (4) Clostridium perfringens 
 

Match the type of bacterial flagella in Group I with their definitions in Group II 
         Group I                          Group II 
(P) Monotrichous           (1) Flagella only at both poles of the cell 
(Q) Peritrichous              (2) Two or more flagella at one pole of the cell 
(R) Lophotrichous          (3) Flagella distributed over the entire cell 
(S) Amphitrichous          (4) A single polar flagellum 
 

In ABO blood group testing, which one of the following is INCORRECT

Match the deficiency conditions in Group I with the corresponding vitamin in Group II 
       Group I                    Group II 
(P) Beriberi                   (1) Ascorbic acid 
(Q) Scurvy                    (2) Retinol 
(R) Birth defects           (3) Thiamine 
(S) Night blindness      (4) Folic acid 
 

The CORRECT sequence of evolution (simplest to complex) is
A variable number of tandem repeats (VNTR) locus has 15 different alleles. The number of genotypes possible in a population for this VNTR is ............
The generation time of E. coli is 20 minutes. If there are \( 10^6 \) E. coli present in an exponentially growing synchronous culture, then the average time (in minutes) required to obtain a final population of \( 4 \times 10^6 \) E. coli is ................
DNA and RNA are acidic in nature due to the presence of
During El Niño,
The common component in crustacean exoskeleton and fungal cell wall is
Eutrophication refers to an aging process from a
In humans, the testis temperature is maintained below the core body temperature with the help of
T cells and B cells are
The CORRECT sequence of phases during mitosis is
In viruses, capsids are made up of
Protein that helps other proteins to fold correctly is
Deficiency of the enzyme phenylalanine hydroxylase causes Phenylketonuria. Phenylalanine hydroxylase converts phenylalanine to
A student observes grass and Hibiscus plants in his garden during noon. To his surprise, only the leaves of grass were found rolled inwards. The reason could be
Identify the wrong statement with regard to Restriction Enzymes.
In which part of the human brain corpora quadrigemina is located
Identify the vegetative propagule ‘M’ in the following diagram :
vegetative propagule
Identify the cells represented as \(p, q, r\) and \(s\) in the schematic representation of Oogenesis, shown below and choose the correct option.
schematic representation of Oogenesis
Which of the following is correct about viroids?
The concept of Ecological pyramid was first introduced by ____ .
Who showed that oxygen is released from water during photosynthesis?