Biology MCQs

Notes:
Asparagus is a stem vegetable. Seeds (maize, wheat, coffee and various nuts), fruit (tomato), leaves (lettuce, spinach, and cabbage), or roots (e.g. carrots and beets). 

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Liver produces a digestive fluid known as bile. Liver release bile into Gall bladder, a small, pear shaped organ located just below your liver in the upper right side of your abdomen.

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Adrenaline, also known as epinephrine, is a hormone, neurotransmitter, and medication. Adrenaline is normally produced by both the adrenal glands and certain neurons.

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DPT is a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus and killed whole cells of the bacterium that causes pertussis. Diptheria is a highly contagious bacterial infection typically affecting the throat and tonsils with the formation of a thick grey membrane over those areas.   Tetanus is bacteria which lives in soil and contaminates wounds, where it produces a powerful toxin, the toxin attacks the nervous system causing increasing muscle spasm and rigidity. Whooping Cough is one of the most contagious bacterial infections known. Beginning with a runny nose and sore throat, it progresses to a severe spasmodic cough which persists for around 3 months.

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The egg can be fertilized for 12 to 24 hours after it’s released as it travels down the fallopian tube toward the uterus. If an egg meets up with a sperm cell that has made its way into the fallopian tube, it combines into one cell, a process that’s known as fertilization or conception. It happens two weeks after menses.

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Buffalo milk has the highest fat content, which is on average twice as high as that of cow milk. The fat-to-protein ratio in buffalo milk is about 2:1.

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The lysosome is known as the suicide bag of the cell because it contains digestive enzymes.

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The plasma membrane is mainly composed of fatty-acid-based lipids and proteins. Robert Hooke discovered the plasma membrane.

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An anticodon is found at one end of the transfer RNA (tRNA) molecule. During protein synthesis, each time an amino acid is added to the growing protein. A tRNA forms base pairs with its complementary sequence on the mRNA molecule and ensures that the appropriate amino acid is inserted into the protein.

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The plant kingdom has been classified into five subgroups: Thallophyta, Bryophyta, Pteridophyta, Gymnosperms, Angiosperms