Biology MCQs

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Cardamom (Botanical name: Elettaria cardamomum) is called the Queen of Spices because of its rich aroma and many uses as a medicine and as a flavoring in food and drink.

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Blue component in light causes suppression of melatonin produced by the pineal gland. Melatonin regulates the sleep–wake cycle. Natural levels of melatonin in the blood are highest at night.

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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.

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Gout is caused by deposition of uric acid crystals in the joint, causing inflammation. There is also an uncommon form of gouty arthritis caused by the formation of rhomboid crystals of calcium pyrophosphate known as pseudogout. In the early stages, the gouty arthritis usually occur in one joint, but with time, it can occur in many joints and be quite crippling. The joints in gout can often become swollen and lose function.

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Triticale is the world’s first man-made cereal developed by crossing wheat (Triticum) and rye (Secale) to combine wheat’s yield and grain quality with rye’s disease resistance and environmental tolerance. The name “triticale” merges “Triticum” and “Secale”, its parent genera.

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A reverse transcriptase is an enzyme used to generate complementary DNA from an RNA template, a process termed reverse transcription. The viral DNA is cut and paste into the host cell DNA. The host cell gets tricked into making lots of proteins for the virus.

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Reptiles are tetrapod animals in the class Reptilia, comprising today’s turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives. The study of these traditional reptile orders, historically combined with that of modern amphibians, is called herpetology

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Some animals have stripes on their back because of the Camouflage Effect. Camouflage effect refers to combination of different colours or materials in order to make animals or objects hard to see or to disguise oneself in the surrounding. Striped Animals can easily hunt other animals by disguising themselves in the surrounding and making it hard for other animals to see.

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As we all know, chlorophyll is one of the main pigments present in autotrophs. It contains carbon, nitogen, oxygen, hydrogen and lastly magnesium.

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They are unique because they are only alive and able to multiply inside the cells of other living things. The cell they multiply in is called the host cell. A virus is made up of a core of genetic material, either DNA or RNA, surrounded by a protective coat called a capsid which is made up of protein.