A charged balloon is brought near an electroscope but does not touch the electroscope. This is an example of charging by?
Induction
True or False. In a current, electrons will always flow from negative toward positive.
True. Electrons flow from negative toward positive because opposite charges are attracted to each other.
Which of the following materials is an insulator against electric current?
a rubber tire
Which of the following materials is a conductor of electric current?
a copper penny
The forensic scientist can assume that the number of adenine is always equal to the number of thymine, according to the base pair rule. Adenine matches with the other purine pair, thymine because it is the only thing to which it could have a hydrogen bond with.
False. The photosynthesis process has two stages, one in presence of light and the other without the presence of light (dark fase), in fact, the carbon fixation can occur during the dark fase, this process is call <span>Calvin cycle.</span>
Frameshift Mutation
A frameshift mutation is a type of mutation involving the insertion or deletion of a nucleotide in which the number of deleted base pairs is not divisible by three. "Divisible by three" is important because the cell reads a gene in groups of three bases.
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Heat Convection. Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it. Convection above a hot surface occurs because hot air expands, becomes less dense, and rises (see Ideal Gas Law).
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