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Using the numbers 1–4, which of the following is thecorrect chronological sequence of events for the Gram staining procedure? 1) Apply iodine for 60 seconds and rinse. 2) Add crystal violet for 60 seconds and rinse. 3)Apply safranin for 60 seconds and rinse. 4)Add 95% ethanol for 10–20 seconds and rinse.

Basic dyes are

The term that refers to the presence of flagella all over the cell surface is

An amino acid contains all of the following except

Which of the following are the main decomposers of the Earth?

Which of the following is the cause of malaria?

Which scientist showed that anthrax was caused by the bacterium Bacillus anthracis?

The hydrophobic tails of a phospholipidare composed of

The motile feeding stage of protozoa is called the

The atomic number equals the number of __________ in an atom.