20190514_071950.jpg - Name 1 12 A compound held together by...

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Unformatted text preview: Name: 1 12. A compound held together by opposite electrical charges is a(n) compound a. ionic b. molecular C. covalent d. electrical 113. Sunlight causes the skin to produce which vitamin? a. vitamin C b . vitamin A C. vitamin D d. vitamin E 114. Biology is the study of a. animals. b. plants. C. life . d. cells. 115. Cell membranes are made of two layers of a. nucleic acids b. lipids C . carbohydrates d. protein 116. Which component of the blood increases in volume when a person is sick? a. leukocytes b. platelets c. erythrocytes d. plasma 117. Which of the following is not a smaller part of an atom? a. proton b. nucleus c. electron d. ion 118. The term biodiversity refers to a. the total number of organisms in an area. b. the amount of habitat available in an area. c. the number of species in an area. d. all of these. 12...
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Christopher Reinemann
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