Tag: harmful microorganism for humans

Leukaemia is blood cancer.
Polycythemia is an abnormally increased concentration of hemoglobin in the blood.
Tay-sachs disease is hexosaminidase A deficiency.
Leucopenia is a reduction in the number of white blood cells (leucocytes) caused by the deficiency of folic acid.
Therefore, the correct answer is option B.

AIDS is caused by HIV virus and transmits sexually.
Jacob syndrome is characterized by an extra copy of Y chromosome in a male. Thalassemia is an inherited autosomal recessive blood disorder characterized by abnormal formation of hemoglobin. Whereas asthma is a respiratory condition caused by attacks of spasm in the bronchi of the lungs, causing difficulty in breathing. One of its cause is coming in contact with some air-borne allergens or exposure to some viral infections in infancy or in early childhood when the immune system is developing.
Thus, the correct answer is option B.

Antibiotics are used against bacterial diseases and malaria is a protozoan disease.

The severity of the disease manifestations depends on the number of microbes present in the body. Smaller is the number of microbes in the body, lesser are the symptoms of a disease. On the contrary, if microbe exists in large number in the body, disease can be severe and life-risking.

Common cold spreads through the mucus of the infected people during sneezing and coughing.

A non-communicable disease (NCD) is a disease that is not transmissible directly from one person to another. Communicable diseases are infectious.

Communicable diseases are the disease that can spread from one person t another by any means of body or blood contact common cold can spread by sneezing in public without covering mouth and chicken pox spreads in the same manner as the cold by sneezing it can also spread through the fluid from the blisters.

An allergy is a non-communicable disease and is a medical condition that makes a person feels unwell, when they eat or come in contact with a particular substance like itchy ears and eyes, eating of food like milk and egg. It occurs when the body’s immune system overreacts to a normally harmless substance.

Communicable diseases spread from one person to another or from an animal to a person. The spread often happens via airborne viruses or bacteria, but also through blood or other bodily fluid. The terms infectious and contagious are also used to describe communicable disease.

Rabies is caused by rabies virus. It is caused due to an animal bite which readily transfers the pathogens to the blood of the infected. Saliva from an infected animal can also transmit rabies if the saliva comes into contact with the mouth, nose, or eyes. Infected vertebrates like birds, rodents, other larger animals mainly dogs are the most common animal involved. The rabies virus travels to the brain by following the peripheral nerves and affect the neurological junctions.