12th Class FSc Part 2 Biology Chapter Wise Online MCQ Test With Answer PDF

Biology FSC Part 2 Online MCQ's Test

Sr. #	Questions	Answers Choice
1	Which of the following statements conserning the role of Ca⁺² inthe contraction of skeletal muscle is correct?	The mitochondria act as a store of Ca<sup>+2</sup>for the contractile process Ca<sup>+2 </sup>entry across the plasma membrane is important in sustaining the contraction of skeletal muscle A rise in inter cellular Ca<sup>+2 </sup>allows actin to interact with myosin The tension of a skeletal muscle fiber is partly regulated by G proteins muscle
2	In skletal muscle, calcium facilitates contraction by binding to:	Tropomyosim Troponin Actin Myosin
3	The remodeling of bone is a function of which cells?	Chondrocytes and asteocytes Osteoblasts and osteoclasts Chondroblasts and osteoclasts Chondroblasts and osteocytes
4	The organic portion of bones matrix is important in providing all but:	Tensile strength Hardness To resist stretch Flexibilty
5	The disorder in which bones are porous and thin but bone composition normal is:	Osteomalacia Osteoporosis Rickets Arthritis
6	When haemoglobin of the blood is fully saturated with oxygen, the 100cc of blood comains	15cc of oxygen 20cc of oxygen 25cc of oxygen 10cc of oxygen
7	Oxygen carryiing capacity of blood does not depend upon:	Particle pressure of CO<sub>2</sub> Particle pressure of O<sub>2</sub> Height from sea level Quantity of blood
8	Which evemt si not associated with the activity of expiration?	Contraction of diaphragm More dome like shape of diaphragm Back ward& downward movement of rib cage Relaxation of intercoastals muscles
9	Human lungs are spongy due to the presence of million of:	Bronchi Alveoli Bronchioles Trachea
10	Which part of the air passage way possesses chartilage plates in its wall?	Bronchiles Distal religion of bronchi Phroximal region of bronchi Trachea
11	Which sequence of organs is correct in air passage way of man?	Nasal cavities larynx phaynx trachia bronchi Nasal cavities phaynx trachia larynxbronchi Nasal cavities phaynx larynxbronchitrachia Nasal cavities phaynx larynxtrachia bronchi
12	When the human blood leaves the capillary bed of the tissue, most of the carbon dioxide is inthe form of:	Carbonic acid Bicarbonate ions Carboxylic acids None of them
13	Th elateal walls of the chest cavity of man are composed of the:	Ribs Intercostals Muscles Ribs and intercoastal muscles Ribs ,Intercostals Muscles & diaphragm
14	What does not happen during inspiration in man?	Intercoatals musles contract Ribs are elevated Diphragm becomedome- shaped Ribs move forwards
15	The wall of trachea(windpipe) and bronchi of man is fernished with a series of incomplete:	Cartilagenous plates Chitinous rings Cartilaginous rings Muscular rings
16	An animal that worms itself mainly by absorping from its surroundings is known as:	Homoiotherm Ectotherm Endotherm None of these
17	In case of overheating the body temperature is regulated by:	More sweating and more urination More sweating and more urination Less sweating and more urinattion Less sweating and less urinattion

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