Test : Biology - 5 - NDA MCQ

The carrot gets its characteristic and bright orange colour from the pigment called carotene.

Oxytocin is an hormone that is normally produced in the hypothalamus and stored in the posterior pituitary gland.

Fluoride in toothpastes prevent tooth decay from progressing and can even reverse, or stop, early tooth decay.

The brain’s limbic system controls emotional expression through the hypothalamus, which has control over the body’s emotional responses systems. The hypothalamus is responsible for regulating hunger, thirst, response to pain, levels of pleasure, sexual satisfaction, anger and aggressive behavior, etc. 

An organism that transmits a disease agent from an infected to a non-infected animal or plant is known as vector.

All enzymes are protein by composition but all proteins are not enzyme.

Thyroid gland is one of the largest endocrine glands which is present in the neck. It is responsible to control body’s metabolism, temperature, appetite and muscle strength, etc.

Nitrogen dioxide (NO_2 ) is not a component of biogas.

The blood group of father of the child could be A or B or O.

Sphygmomanometer is an instrument to measure the blood pressure. It is made up of an inflatable cuff to restrict the blood flow and a mercury or manometer to measure pressure.

Water gas is a synthetic gas, having CO and H_2. The gas is produced by passing steam over a red hot hydrocarbon fuel as coke. 

Chikungunya is caused by chikungunya virus which is an insect borne virus of genus Alphavirus. Symptoms show high fever, maculopapular rash, headache, etc. 

Vitamin-C is enough in guava fruits. Vitamin-C helps in strengthening of immunity, serves as an antioxidant and provides relief in hypertension too.

Vitamin-K adds in blood clotting. Vitamin-K acts as an essential cofactor for factor-II, VII, IX, X and also for proteins Z, C and S. 

Thyroid gland in human body contains iodine. Deficiency of iodine creates goitre disease. Which is observed by the enlargement of larynx.