Which of the following is mismatched? A. iron deficiency anemia - lack of iron a

Question

Which of the following is mismatched? A. iron deficiency anemia - lack of iron absorption fore erythropoiesis B. hermolytic anemia - increased destruction of erythrocytes C. aplastic anemia - bone marrow fails to produce erythrocytes D. hermorrhaglc anemia - loss of blood from the body E. pernicious anemia - loss of blood from the body The sarcoplasmic reticulum A. transmits nerve impulses to the myofibrils. B. stores calcium ions. C. connects adjacent saracomeres, D. shortens during muscle contraction. E. covers the muscle fiber. What type of membrane proteins can catalyze chemical reactions on inner or outer surface of membrane? A. enzymes B. receptor proteins C. channel protein D. marker molecules E. carrier proteins Which of the following is true? A. Skeletal muscle is capable of spontaneous contraction. B. Smooth muscle cells are long and cylindrical. C. There is a small amount of smooth muscle in the heart. D. Cardiac muscle cells have multiple nuclei. E. Smooth muscle is found in the walls of hollow organs. The structural and functional unit of all living organisms is the A. cell. B. organ. C. organelle. D. plasma membrane. E. ribosome.

Explanation / Answer

68) option E is false. Pernicious anemia is caused by reduced vitamin B12 absorption by the stomach due to deficiency of intrinsic factor.

69) option B is correct. Sarcoplasmic reticulum is the endoplasmic reticulum of the muscle. It stores and releases calcium ions as and when required for muscle contraction.

70) option c correct. Channel proteins are transmembrane proteins therefore they have actions inside and outside the cell membrane

71) option E correct

Smooth or involuntary muscles are found in the walls of hollow structures like the GI tract arteries veins etc.

72) option A correct. Cell is the unit of life.

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