Biology MCQs

Notes:
Mitosis is a fundamental process for life. During mitosis, a cell splits to form two identical daughter cells by duplicating all of its contents, including its chromosomes. Prophase, metaphase, anaphase & telophase are the stages of
Mitosis.

Notes:
George W. Beadle (1903-1989) and Edward L. Tatum (1909-1975) show how genes direct the synthesis of enzymes that control metabolic processes. George Beadle and Edward Tatum were awarded Nobel Prize in 1958 for One Gene One Enzyme Concept.

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.

Notes:
Some organisms are able to convert inorganic material into organic compounds by a process called Chemosynthesis. This involves oxidation of inorganic molecules (e.g. hydrogen gas, hydrogen sulfide) or methane as a source of energy, rather than sunlight, as in photosynthesis.

Notes:
A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues.

Notes:
A hen that is committed to hatching chicks is known as a broody. The state of being broody is controlled by instinct, hormones and lighting conditions. Chicken come out of the eggs within the 21 days after being hatched by the hen. Some breeds take a little less and some a little longer. If the egg has not hatched after 25 days, it should be removed from the broody hen or incubator. Eggs need constant heat during the full incubation period for the embryo to develop into a chick.

Notes:
Nitrogen fixing plants don’t pull nitrogen from the air on their own. They actually need help from a common bacteria called Rhizobium. The bacteria infect legume plants such as peas and beans and use the plant to help it draw nitrogen from the air.

Notes:
Femur is the longest and strongest bone in the human body. It is also called as the thigh bone.

Notes:
Luc Antoine Montagnier (born 18 August 1932) is a French virologist and joint recipient, with Françoise Barre-Sinoussi and Harald Zur Hausen, of the 2008 Nobel Prize in Physiology or Medicine for his discovery of the human immunodeficiency virus (HIV). He has worked as a researcher at the Pasteur Institute in Paris and as a full-time professor at Shanghai Jiao Tong University in China.

Notes:
Cryptogamic plants include Algae, mosses, liverworts, lichens, ferns and fungi and they reproduce by spores and not producing flowers or seed.