Biology MCQs

Notes:
Dr. Joseph Lister was a British surgeon and a pioneer of the antiseptic surgery. His research into bacteriology and infection in wounds, raised his skillful operative technique, that was similar to his peers.

Notes:
Cuttlefish or cuttles are marine molluscs of the order Sepiida. related to the octopus and squid and characterized by a thick internal calcified shell called the cuttlebone.

Notes:
MON 863 is a genetically engineered variety of maize produced by Monsanto. It was generated by transformation of Zea mays cell culture line AT824 with a MIuI restriction fragment from plasmid PV-ZMIR13 using particle acceleration technology.

Notes:
Schizophrenia is an example of mental illness. It is a serious mental disorder in which people interpret reality in an abnormal manner. It can result into hallucinations, delusions, and extremely disordered thinking and behavior that impairs daily functioning, and can be disabling.

Notes:
Hepatitis A which is the most common cause of jaundice in young people is an infection of liver by virus. It is transmitted through ingestion of contaminated food and water or through direct contact with an infectious person.

Notes:
Rauwolfia serpentina, also called Sarpagandha, yields reserpine, an antihypertensive alkaloid. Its roots have significant medicinal use in treating hypertension and mental disorders. The other species—Amla, Shatavari, and Sunflower—are not known for similar alkaloid content in their roots.

Notes:
Uric acid is not soluble in water and is excreted as a dry crystal by the animal’s digestive system. Ammonia is the most toxic nitrogenous waste and must be excreted in large volumes of water.

Notes:
Filariasis is a parasitic disease caused by an infection with roundworms of the Filarioidea type. These are spread by blood-feeding black flies and mosquitoes. Meningitis is an inflammation of the protective membranes covering the brain and spinal cord known as the meninges. The inflammation may be caused by infection with viruses, bacteria or other microorganisms. Yellow fever is an acute viral disease. It is caused by the yellow fever virus and is spread by the bite of an infected female mosquito.

Notes:
Triticale is the world’s first man-made cereal developed by crossing wheat (Triticum) and rye (Secale) to combine wheat’s yield and grain quality with rye’s disease resistance and environmental tolerance. The name “triticale” merges “Triticum” and “Secale”, its parent genera.

Notes:
Taenia is a taxonomic rank of tapeworm (helminth) that includes some main parasites of livestock. There are more than 100 species of Taenia. Taenia is responsible for taeniasis and cysticercosis in humans. They are morphologically characterized by a ribbon like body composed of a series of segments called proglottids.