Test Bank and Solutions For Human Biology 17th Edition By Sylvia Mader

lOMoARcPSD|25922779 Test Bank and Solutions For Human Biology 17th Edition By Sylvia Made r r Human Biology, 17e (Mader) Chapter 2 Chemistry of Life 1) The smallest unit of an element that still retains the chemical and physical properties of that element is called a(n) A) isotope. B) nucleus. C) atom. D) molecular bond. E) neutrino. Answer: C Explanation: An atom is the smallest unit of an element that still retains the chemical and physical properties of that element. Section: 02.01 Topic: Atomic Structure Bloom's: 1. Remember Learning Outcome: 02.01.01 Distinguish between atoms and elements. Accessibility: Keyboard Navigation 2) In an atom, the number of protons always equals the number of A) electrons. B) neutrons. C) neutrons and protons. D) quarks. E) neutrinos. Answer: A Explanation: In an atom, the number of protons always equals the number of electrons. Section: 02.01 Topic: Atomic Structure Bloom's: 1. Remember Learning Outcome: 02.01.02 Describe the structure of an atom. Accessibility: Keyboard Navigation 3) How many elements occur naturally? A) 112 B) 92 C) 64 D) 32 E) 6 Answer: B Explanation: There are 92 naturally occurring elements.