210. The mass number of an atom is the number of A. protons in the atom. B. neut

Question

210. The mass number of an atom is the number of A. protons in the atom. B. neutrons in the atom. C. protons and electrons in the atom D. electrons and neutrons in the atom E. neutrons and protons in the atom. 11. Which of the following is mismatched? A. aplastic anemia-bone marrow fails to produce erythrocytes B. hemolytic anemia - increased destruction of erythrocytes C. pernicious anemia- loss of blood from the body D. iron deficiency anemia - lack of iron absorption for erythropoiesis E. hemorrhagic anemia - loss of blood from the body 12. Consider the following structural levels: chemical, organ, tissue, cell, and organ system. Which level encompasses the other four? A. tissue B. organ system C. organ D. chemical E. cell 13. A red blood cell that is placed in a hypertonic solution A. gains water. B. loses water C. floats. D. ruptures. E. neither gains nor loses water 14. What type of connective tissue is found between the vertebrae? A. hyaline cartilage B. fibrocartilage C. elastic cartilage D. dense irregular elastic tissue E. dense regular collagenous tissue

Explanation / Answer

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10. The mass number of an atom is the number of

Answer: Option. E (neutrons and protons in the atom)

Explanation: A mass number is called atomic mass and nucleon number. It is always equal to the number of neutron and protons present in the atom. The mass number varies in isotopes of a chemical element. The mass number is not equal to the atomic number (which shows the number of protons and act as the unique identity of an element) the difference in the mass number and atomic number is the number of neutrons in a given nucleus.

11. Which of the following is mismatched?

Answer: Option. C (pernicious anemia-loss of blood from the body)

Explanation: Pernicious anemia is the anemic condition in which due to the deficiency of vitamin B12 body is unable to make sufficient healthy red blood cells. In anemia took place when our stomach is unable to absorb the vitamin B12 from food sources due to the lacking the intrinsic factor (IF) produced by stomach lining. Pernicious anemia causes permanent damage to nerves and other organs if it persists for a long time without proper treatment. It also increases the chances to get stomach cancer.

12. Consider the following structural levels: chemical, organ, tissue, cell, and organs system. Which level encompasses the other four?

Answer: Option. B (organ system)

Explanation: The organ system is the system which composes all organs of an organism. The organ system is made up of organs, organs are made up of tissues and tissues are made up of cells and further cells are made up of chemicals.

13. A red blood cell that is placed in a hypertonic solution

Answer: Option. B (loses water)

Explanation: Whenever we put RBC in hypertonic solution it shrinks and water come out from the cell to the surrounding solution. The reason behind this is the Osmosis. Osmosis causes solutions with high concentrations to draw the water out of the areas where the salt concentration is low.

14. What type of connective tissue is found between the vertebrae?

Answer: Option. C (elastic cartilage tissue)

Explanation: The elastic cartilage tissue found in any part of the body. It acts as the cousin and reduces the friction, and also provides the support. It is found between the discs of the vertebrae in the spine. Although it is one of the tough and flexible materials it got damaged very easily. Its damage causes inflammation, stiffness in joints, and pain during limb movement

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