Biology MCQs

Notes:
Bombay Blood Group is an extremely rare ABO group, called so because it was first discovered among some people in Bombay. Their red cells lack ABH antigens and their sera contain anti-A and anti-B and anti-H. The anti-H would not be detected in the ABO group but would be detectable in pretransfusion tests. People who have Bombay phenotype can donate to any member of the ABO blood group system (unless some other blood factor gene, such as Rhesus, is incompatible), but they cannot receive any member of the ABO blood group system`s blood (which always contains one or more of A and B and H antigens), but only from other people who have Bombay phenotype

Notes:
Albumin is a protein found in the blood plasma, and it plays a crucial role in regulating osmotic pressure. It helps to maintain the balance of fluids between the blood vessels and the surrounding tissues. Albumin exerts an osmotic pressure that prevents the excessive loss of fluid from the blood vessels into the tissues.

Fibrinogen, Red Blood Cells, and Platelets have different functions in the blood, but they are not primarily responsible for maintaining osmotic pressure. Fibrinogen is involved in blood clotting, Red Blood Cells are responsible for carrying oxygen, and Platelets play a role in blood clotting as well.

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The phenomenon is found in Mangrove Plants and is known as Vivipary and Rhizophora belongs to that category.

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The most primitive life forms on Earth are prokaryotes, which are the simplest cellular forms of life. Prokaryotes include archaea and bacteria, which have been found on Earth for 3.5 to 3.8 billion years.
The earliest known life forms on Earth are fossilized microorganisms found in hydrothermal vent precipitates. These microorganisms are believed to be about 3.42 billion years old.
The first life forms were probably a tiny bacteria called archaebacteria. These bacteria thrive in very hot, chemically rich places.

Notes:
Seismonastic Movement is caused by the mechanical stimuli like shock, touch, fast moving wind, etc. Mimosa pudica is a perennial herb which is also known as the touch me not plant or the sensitive plant, is well-known for closing its leaves (or folding its leaves inwards) when touched.

Notes:
By the age of two, the rennin and lactase enzymes start disappearing. However, these enzymes completely disappear by the age of eight in humans. After, this the stomach of person becomes mature enough to produce pepsin to digest the food.

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Bile is a digestive juice secreted by the liver and it aids in the digestion of food. Many waste products are eliminated from the body through bile.

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Vitamin B2 is also called as riboflavin. Chemical formula of vitamin B2 is C17H20N4O6.

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Carolus Linnaeus proposed Two kingdom of classification in which he classified organisms into Plantae and Animalia.

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A plasma membrane is made up of lipids and proteins. The composition can fluctuate depending on the fluidity in the plasma membrane, the external environment, and the different stages of cell development.