List of top Biology Questions

Benign tertian malaria is caused by
Replication and transcription occur in the nucleus but translation occurs in the cytoplasm. m RNA is transferred from the nucleus into the cytoplasm where ribosomes and amino acids are available for protein synthesis.
Nuclear endosperm is formed by subsequent nuclear division without wall formation. Coconut is an example of such endosperm, where the endosperm remains nuclear throughout the development of the fruit.
Maize is an albuminous seed. Endosperm is completely absorbed by its growing embryo.
Interferons are a type of antibodies produced by body cells infected by bacteria. Interferons stimulate inflammation at the site of injury.
In collateral vascular bundles, phloem is situated towards inner side. In monocot stem, cambium is present.
F particles are present in the inner mitochondrial membrane. An electron gradient formed on the inner mitochondrial membrane, forms ATP
Ciliated epithelium is present in the inner lining of trachea and large bronchi. Ciliary movement propel the mucus and foreign particle towards the larynx.
Which one of the following is a matching pair of a drug and its category?
The great barrier reef along the east coast of Australia can be categorized as
A baby has been born with a small tail. It is the case exhibiting
The plant part which consists of two generations one within the other, is
Cultivation of Bt cotton has been much in the news. The prefix Bt means:
An insect bite may result in inflammation of that spot. This is triggered by the alarm chemicals such as
Which group of animals exhibits bilateral and radial symmetry 'in larval and adult stages respectively?
Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it?
Vascular tissues in flowering plants develop from
Vacuole in a plant cell
Keeping in view the 'fluid mosaic model' for the structure of cell membrane, which one of the following statement is correct with respect to the movements of lipids and proteins from one lipid monolayer to the other (described as flipflop movement)?
In germinating seeds fatty acids are degraded exclusively in the
Gel electrophoresis is used for the
According to Central Pollution Control Board (CPCB), which particulate size in diameter (in micrometers) of the air pollutants is responsible for greatest harm to human health?
A lake near a village suffered heavy mortality of fishes within a few days. Which of the following statements could be the correct explanation for this? (i) Lots of urea and phosphate fertilisers were used in the crops in the nearby fields. (ii) The croplands of the village were fertilised fields rich in nitrate and phosphate. (iii) The lake water turned green and stinky. (iv) Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis.
Yellowish edges appear in leaves deficient in
Write the present expansion for WWF