Due Date: At the beginning of class; Friday, Dec II 1. Viruses are not considere

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Due Date: At the beginning of class; Friday, Dec II 1. Viruses are not considered living things because a. They are composed of proteins and nucleie acids They cannot reproduce without a host cell c. They are not capable of changing over time d. Viruses are considered very basic living organisms 2. A researcher predicts that chemical X will make plants grow taller, and designs an experiment to test the prediction. This prediction can be classified as a(n) a. Observation b. Dependent variable c. Independent variable d. Hypothesis e. Theory 3. Magnesium chloride is a salt formed from ionic bonds between one magnesium ion and two chloride ions. Magnesium atoms has two electrons in their outer (third) shell and chlorine atoms have seven electrons in their outer shell. How many electrons would be in the outer shell of magnesium once it becomes an ion? a. b. 2 c. d. 6 e. 4·180 has an atomic number of 8, How many neutrons does 180 have? a. 8 b. 10 c. d. 18 5. What property of an atom determines how it forms bonds? a. Atomic Mass b. Atomic number c. Valance electrons d. Orbits e. Neutrons

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1. b. this option is correct. virus needs a host to multiply. it has DNA and proteins

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