Biology MCQs

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Legume nodules possess special protein called LEGHEMOGLOBIN. The synthesis of leghemoglobin is the result of symbiosis because neither bacteria alone nor legume plant alone possess the protein

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Vitamin E is a series of organic compounds consisting of various methylated phenols. Because the vitamin activity was first identified in 1936 from a dietary fertility factor in rats, it was given the name “tocopherol” or birth carrying vitamin.
There are eight forms of Vitamin E. In general, food sources with the highest concentrations of vitamin E are vegetable oils, followed by nuts and seeds including whole grains. 

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A cornea transplant also called as keratoplasty is a surgical procedure to replace part of your cornea with corneal tissue from a donor. Cornea does not link up with blood vessels, this makes the Cornea Transplantation easy and used more widely.

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Vitamin B is involved in the breakdown of energy molecules such as glucose. Vitamin B are a class of water-soluble vitamins which play an important role in cell metabolism.

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Color blindness is more prevalent in men as it is an X-linked recessive disorder. Men, having only one X chromosome, are more susceptible if it is defective. Women, with two X chromosomes, become color blind only if both carry the defective gene. All three statements accurately describe the inheritance and prevalence of color blindness.

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Rauwolfia serpentina, also called Sarpagandha, yields reserpine, an antihypertensive alkaloid. Its roots have significant medicinal use in treating hypertension and mental disorders. The other species—Amla, Shatavari, and Sunflower—are not known for similar alkaloid content in their roots.

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The lateral fin of the whale consists of the same bones as a human’s arm, the radius, ulna, and humerus. These structures are considered to be homologous because the underlying structure is similar and, therefore, humans and whales share a common ancestor. The lobster’s leg, the reptile’s front leg, and the insect’s wing are analogous to the human’s arm. They have a common function but no common structure, and they do not share a common ancestor.

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The order Primata includes monkey, gorilla and man and the order Carnivora includes lion, tiger, cat and dog. These two orders are the members of the same class called Mammalia. So, man, monkey and tiger are in the same class.

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The pituitary gland is a small pea-sized gland that plays a major role in regulating vital body functions and general wellbeing. Through secretion of its hormones, the pituitary gland controls metabolism, growth, sexual maturation, reproduction, blood pressure and many other vital physical functions and processes.

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Most noninfectious causes of hepatitis are not contagious. Hepatitis caused by alcohol poisoning, medications, or toxins or poisons are not transmitted from person to person.