Question $135$

The first microscope did not contain lenses,$$only small holes that focused light rays.

True

False

$1$ points $$

Question $136$

During the Log Phase of bacterial growth, there is no net increase in cell number, but there is a tremendous increase in cell size.

True

False

$1$ points $$

Question $137$

All experiments need to have a control group or the results are not valid.

True

False

$1$ points $$

Question $138$

The electron microscope has a higher ability to see detail than the light microscope because electrons are focused with glass lenses, instead of magnets as in a light microscope.

True

False

$1$ points $$

Question $139$

The presence of a bacterial capsule could be detected using a negative stain.

True

False

$1$ points $$

Question $140$

The trypanosomes$$that cause sleeping sickness move by means of flagella.

True

False

$1$ points $$

Question $141$

A chemically$-$defined medium is a medium with constituents whose composition is not totally$$known$,$ for example$$it contains things like yeast extract.

True

False

$1$ points $$

Question $142$

A viable plate count gives you the total number of organisms $($both living and dead$)$ within a culture medium.

True

False