Q. Initiation of milk secretion is called -
1) Lactogenesis
2) Galactogenesis
3) Galactopiosis
4) None of these
Q. Which one of the following proteins gives lustrous shiny appearance to silk fiber?
1) Fibrin
2) Sericin
3) Collagen
4) Nectin
Q. Human insulin molecule is composed of one a-chain having 21 amino acids and one B-chain having 30 amino acids. How many functional insulin genes occur in adult humans ?
1) One
2) Two
3) Three
4) Four
Q. Pearl is a hard object produced within the soft tissues of a mollusk. Which one of the following is the main constituent of pearl?
1) Calcium Carbonate
2) Calcium Oxide
3) Calcium Nitrate
4) Calcium Sulphate
Q. A biological community in its environment such as a pond, an ocean, a forest, even an aquarium is known as -
1) biome
2) community
3) abiotic environment
4) ecosystem
Q. Which one of the following elements is involved in the control of water content of the blood ?
1) Potassium
2) Lithium
3) Rubidium
4) Caesium
Q. Which one of the following elements is essential for the formation of chlorophyll in green plants?
1) Calcium
2) Iron
3) Magnesium
4) Potassium
Q. Which one of the following crops is not cultivated in Karewas, the lacustrine deposits of sand, clay, loam, silt and boulders?
1) Saffrom
2) Almond
3) Walnut
4) Ling nut
Q. Which of the following classes of animals has/have three chambered heart?
1) Pisces and Amphibia
2) Amphibia and Reptilia
3) Reptilia only
4) Amphibia only
Q. Accumulation of which one of the following in the muscles of sprinters leads to cramp?
1) Lactic acid
2) Ethanol
3) Pyruvic acid
4) Glucose
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