Inflammation of the liver is caused by:
- (a) Cholera
- (b) Hepatitis
- (c) Typhoid
- (d) Jaundice
- (b) Hepatitis
Hepatitis is a medical condition characterized by inflammation of the liver. The word hepatitis is derived from the Greek word, which consists of ‘hepar’ referring to the liver and ‘-itis’ referring to inflammation. The most common cause of hepatitis is virus infection, which includes Hepatitis A, B, C, D, and E. Hepatitis can also result from the consumption of alcohol, toxins, medications, or autoimmune diseases.
(a) Cholera: An acute diarrheal disease caused by the bacterium Vibrio cholerae, which attacks the small intestine and results in severe dehydration.
(c) Typhoid: This is a bacterial infection caused by Salmonella typhi. Though the liver may be involved as a complication of typhoid fever (typhoid hepatitis), the main feature of the disease is a persistently high fever and involvement of the intestines and the lymphatic system.
(d) Jaundice: This is not a cause of inflammation; it is a symptom of a condition. Jaundice is the yellowish discoloration of the skin and the eyes due to a buildup of bilirubin in the blood, which may be due to hepatitis.
Paris Climate Agreement was adopted in:
- (a) 2014
- (b) 2015
- (c) 2016
- (d) 2017
- (b) 2015
The Paris Climate Agreement came into existence on December 12, 2015, at the COP21—the 21st Conference of the Parties to the UNFCCC—held in Paris, France.
A camera uses convex lens to form an image which is:
- (a) Real, Inverted, Magnified
- (b) Real, Inverted, Diminished
- (c) Virtual, Inverted, Magnified
- (d) Real, Upright, Diminished
- (b) Real, Inverted, Diminished
A camera lens is designed to accept a wide view and project it onto a small electronic sensor or a tiny piece of film. It is a real image because it is formed by projecting light. When a convex lens is used, a real image always inverts upside down compared to the object. Also, because a large object from the real world, such as a person or a building, has to fit on a very small sensor, the image is also diminished.
The United Nations Conference on Environment and Development (UNCED), also known as the RIO Summit, was held in:
- (a) 1990
- (b) 1991
- (c) 1992
- (d) 1993
- (c) 1992
The United Nations Conference on Environment and Development (UNCED), also referred to as the Rio Summit or the Earth Summit, convened in Rio de Janeiro, Brazil, from June 3 to June 14, 1992.
What is the speed of sound in air?
- (a) 1,347 km/h
- (b) 1,235 km/h
- (c) 1,290 km/h
- (d) 1,495 km/h
- (b) 1,235 km/h
Enzymes are basically made up of:
- (a) Fats
- (b) Nucleic Acids
- (c) Vitamins
- (d) Proteins
- (d) Proteins
Enzymes are mostly proteins. These biological catalysts consist of one or more polypeptide chains, which are simply amino acid chains. They catalyze chemical reactions in living organisms. Although a few RNA molecules can also behave as biological catalysts, most of them are proteins.
What is the life span of red blood cells?
- (a) 110 days
- (b) 120 days
- (c) 140 days
- (d) 170 days
- (b) 120 days
The lifespan of a red blood cell in a healthy adult human is 120 days. During its lifespan, it traverses the body, traveling many miles, until it becomes worn out, rigid, and is eventually destroyed.
What is the percentage of water in our brain?
- (a) 75%
- (b) 85%
- (c) 95%
- (d) 93%
- (a) 75%
The human brain consists of approximately three quarters water, or around 73% to 75%. This considerable level of hydration is very important to clear and precise thought, and research indicates that a reduction in hydration of only 2% can affect memory and concentration. The brain and the heart depend on it to function properly.
In order to make nitrogen available for primary producers like plants in ecosystems, it is converted to:
- (a) Nitrates
- (b) Nitrites
- (c) Ammonia
- (d) Nitric Acid
- (a) Nitrates
Parthenocarpy is the production of fruit which makes the fruit:
- (a) Full of seeds
- (b) Seedless
- (c) Bitter
- (d) Water-less
- (b) Seedless
Parthenocarpy is a biological process where a fruit develops from the ovary without fertilizing the ovules. Since the seeds develop due to fertilization, fruits developed in this way remain naturally seedless. This occurs naturally in fruits such as bananas and pineapples, and artificially by using plant hormones such as auxins and gibberellins.