Biology MCQs

Notes:
Smallpox vaccine was the first vaccine ever to be developed. Smallpox is an infectious disease which is caused by one of two virus variants, Variola major and Variola minor.

Notes:
Bacteriophage a virus that parasitizes a bacterium by infecting it and reproducing inside it. Bacteriophages are commonly used in genetic research. They are composed of proteins that encapsulate a DNA or RNA genome, and may have structures that are either simple or elaborate.

Notes:
Human papilloma virus (HPV) is a viral infection that’s passed between people through skin-to-skin contact. There are over 100 varieties of HPV. Human Papilloma Virus is 0related to Cervical cancer.

Notes:
As cnidarians, sea anemones are related to corals, jellyfish, tube-dwelling anemones, and Hydra.

Notes:
Bacteriophage, also called phage or bacterial virus, any of a group of viruses that infect bacteria. Bacteriophages were discovered independently by Frederick W. Twort in Great Britain in 1915. It is a virus which parasitizes a bacterium by infecting it and reproducing inside it. Bacteriophages are much used in genetic research.

Notes:
In biology, tissue is a cellular organizational level between cells and a complete organ. Animal tissues are grouped into four basic types: connective, muscle, nervous, and epithelial.

Notes:
The right portion receives blood (which is impure) from the body and pumps the same to the lungs for purification (oxygenation). The impure blood enters the heart from two large veins called the superior and inferior vena cava.

Notes:
Liver is both the heaviest internal organ and the largest gland in the human body. Located in the right upper quadrant of the abdominal cavity, it rests just below the diaphragm, to the right of the stomach and overlies the gallbladder.

Notes:
Pasteurization is the process of heating milk up and then quickly cooling it down to eliminate certain bacteria and all other microorganisms. More common is heating milk up to at least 161.6 degrees Fahrenheit for 15 seconds. There are following methods that are most commonly used:
• High Temperature, Short Time (HTST) method – This method requires that the milk be held at 161 degrees for 16 seconds.
• Ultra-Pasteurization (UP) – This is the type of pasteurization that you will most commonly see on cartons of milk, half-and-half and heavy cream.

Notes:
Ductless glands which are also known as internally secreting glands or endocrine glands secrete their products or hormones directly into the blood stream in response to instructions from the brain.