Biology Questions

Persons with type AB blood are sometimes called universal donors is a FALSE statement. 

Persons with type AB blood are sometimes called universal recepients.

Persons with type O blood  are called universal donors.

Myopia is a disease connected with eyes. Myopia is also called as Nearsightedness.

• It is a common vision condition in which you can see objects near to you clearly, but objects farther away are blurry.

• It occurs when the shape of your eye causes light rays to bend (refract) incorrectly, focusing images in front of your retina instead of on your retina.

The temperature danger zone for the food that cannot be stored for long time is between 5 degrees to 63 degrees centigrade.

Niacin is the name for vitamin(B3).

Liver can produce small amount of niacin from tryptophan.

To produce 1 mg of niacin we require 60 mg of tryptophan.