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1. Carbohydrates are used for
2. An _ element _____ is defined as a pure substance made up of one type of atoms and cannot be further subdivided into simpler substances by any physical or chemical means.
3 Orchids were studied to determine if the amount of humidity affected the flowering of these plants. Which of these was the independent variable in this study?
4 A solution with a pH below 7 is
5 For the following statement, what is the dependent variable?
6 Identify and briefly explain the four levels of protein structure.
7 A protein molecule which is denatured, has
8 Changing the number of neutrons of an atom changes its:
9 Which variable is measured rather than manipulated?
10 Some insects can " walk on water " because:
11 Richard was observing black swallowtail butterflies in the field. Which one of these is an observation he made about a black swallowtail butterfly?