List of top Biology Questions

Male and female cockroaches can be distinguished externally by

Location and secretion of Leydig's cells are

Autonomously replicating circular extrachromosomal DNA is called

Which type of epithelium is involved in a function to move particles or mucus in a specific direction ?

$ATP$ is synthesized in

Open circulatory system is found in most arthropods. Arthropods contain haemolymph which directly bathes internal tissues and organs.

In cockroach respiratory gases directly comes in contact with the various organs of the body. Cockroaches do not have respiratory pigment.

Glycine, an amino acid, comes under the category of non-essential amino acids. The fact behind it is that glycine cannot be synthesized in the body.

DNA fingerprinting involves identifying differences in specific regions in DNA sequence. DNA fingerprinting is the basis of paternity testing.

Auditory ossicles are small bones present in the cavity of inner ear. Auditory ossicles maintain the balance of air pressure between two sides of ear drum.

Adrenaline is called an emergency hormone. It acts on the cells of skeletal, cardiac, smooth muscles, blood vessels and fat cells.

Holandric genes are located

In a bacterium, the amount of adenine was found to be $18$ percent. Suggest the cytosine base composition from the following

The function of nitrogen fixation in Anabaena (cyanobacterium) is performed by

Centre of DNA Fingerprinting and Diagnostics $(CDFD)$ is located at

$pBR _{322}$, which is frequently used as a vector for cloning gene in $E$. coli is a/an

In the blood of an adult man the total content of haemoglobin is roughly

Which one of the following is the best stage to observe the shape, size and number of chromosomes in a cell?

The main function of the white blood cell in the human intestine system is to

Sinking of zooplankton during the day and rising to the surface at night is an example of

Animals take phosphorus from

Okazaki is known for his contribution to the understanding of

Which one of the following is not a lateral meristem?

Which of the following are used in gene cloning ?

Vegetative propagation in Pistia occurs by