An ion is an atom that has _____
a. the same number of electrons and protons
b. different numbers of electrons and protons
B
Biology & Microbiology
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The directional growth response of plants to touch is called
A. phototropism. B. gravitropism. C. thigmotropism. D. photoperiodism. E. thermotropism.
Biology & Microbiology
pH is a measure of the number of _____ in a fluid
1.covalent bonds 2.hydrogen ions 3.calcium ions 4.water molecules
Biology & Microbiology
Emery had no freckles. His wife, Marguerite, was clearly freckled but known to be heterozygous for the gene. Predict the chance that any one of their children will have freckles
A) 100% B) 25% C) 50% D) 75%
Biology & Microbiology
An intimate relationship between two different species is called
a) predation. b) an ecosystem. c) symbiosis. d) a community. e) competition.
Biology & Microbiology