List of top Biology Questions

For a 0.1 M aqueous solution of lysine, the pH at which it carries no net charge is .......... 

(pKa values for: α-carboxylic group = 3.1, α-amino group = 8.0, ε-amino group = 10.8)
 

Proenzyme pepsinogen is secreted from 'P' of gastric mucosa and converted into active enzyme pepsin on exposure to 'Q' secreted from 'R'. Choose the CORRECT combination of P, Q, and R.
What is the source of electrons in photosynthesis?
The reaction of 11-cis-retinal with the lysine residue of a specific protein forms the light-sensitive pigment in the cells of retina. The light-sensitive pigment is an
Which of the following feature(s) should be present in a protein to generate strong immune response (antibody production) in an animal?
I. At least one B-cell epitope
II. At least one T-cell epitope
III. Proteolytic cleavage site(s)
Which one of the following statements is CORRECT for Mycoplasma?
In the feedback regulation of an enzyme, the end product binds to the
Pyramid of energy in a forest ecosystem is
Which one of the following protozoan parasites belongs to the phylum Apicomplexa?
What type of ecological pyramid would be obtained with the following data ?
Secondary consumer : 120 g
Primary consumer : 60 g
Primary producer : 10 g
Bowman's capsule is present in :
Example of homologous organs is :
Energy stored in respiration :
Example of bisexual flower is :
Evaporation of water from the surface of leaf is called :
Oxygenated blood is present in :
Enzyme present in the saliva of human being ?
Amphibians do not have the following :
Auxin is a :
Asexual reproduction by budding is present in :
Which of the following species of honey bee is an Italian species ?
Which one is made of dead cells :
Kala-azar is caused by :
Nodules with nitrogen-fixing bacteria are present in :
Which of the following is not a green-house gas ?