Fill in the Blank

Direct count of total cells can be performed using a ________ or a ________.

The ________ method allows direct count of total cells growing on solid medium.

A statistical estimate of the number of live cells in a liquid is usually done by ________.

For this indirect method of estimating the growth of a culture, you measure ________ using a spectrophotometer.

Active growth of a culture may be estimated indirectly by measuring the following products of cell metabolism: ________ or ________.

A bacterium that thrives in a soda lake where the average pH is 10.5 can be classified as a(n) ________.

Lactobacillus acidophilus grows best at pH 4.5. It is considered a(n) ________.

A bacterium that thrives in the Great Salt Lake but not in fresh water is probably a ________.

Bacteria isolated from the bottom of the ocean need high atmospheric pressures to survive. They are ________.

Staphylococcus aureus can be grown on multipurpose growth medium or on mannitol salt agar that contains 7.5% NaCl. The bacterium is ________.

Blood agar contains many unspecified nutrients, supports the growth of a large number of bacteria, and allows differentiation of bacteria according to hemolysis (breakdown of blood). The medium is ________ and ________.

Rogosa agar contains yeast extract. The pH is adjusted to 5.2 and discourages the growth of many microorganisms; however, all the colonies look similar. The medium is ________ and ________.