Convex surfaces converge light rays, bringing them closer together
a. True
b. False
Indicate whether the statement is true or false
True
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Which of the following is a type of circulatory shock?
A) hypovolemic, caused by increased blood volume B) cardiogenic, which results from any defect in blood vessels C) vascular, due to extreme vasodilation as a result of loss of vasomotor tone D) circulatory, where blood volume is normal and constant
What is the special role of the thymus gland?
What will be an ideal response
A curvature defect of the lens or cornea in which some parts of an image are in focus on
the retina and other parts are blurred and vision is distorted is called A) presbyopia. B) myopia. C) astigmatism. D) hyperopia.
The atomic number of sodium is 11 while the atomic mass number is 23. Which of the following is NOT true of an atom of sodium?
A) 11 protons B) 8 electrons in the valence shell of a neutral sodium atom C) 11 neutrons D) 11 electrons E) 1 electron in the valence shell of a neutral sodium atom