crystalryan3797

19.08.2019 • 

Biology

10. in a series of experiments, griffith infected mice with nonvirulent r-strain bacteria and highly virulent s-strain bacteria. heat-killed s
bacteria were nonvirulent. however, the nonvirulent heat-killed s bacteria and the nonvirulent r bacteria together produced a virulent
mixture. what did this demonstrate?
a. the s-strain bacteria had not been killed completely
b. the molecules present on the outside of bacteria determine whether it's virulent or nonvirulent
c. a transforming principle in the fly bacteria allowed the nonvirulent r strain to become virulent
d. the translation of proteins, carbohydrates, lipids, and dna is important in determining bacterial virulence.

Ответ:

sniron

14.04.2020

Biology

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a. Recall and master the procedure in using a salinometer

Explanation:

Salinometer, which is also known as salimeter is a laboratory equipment used to measure the salinity of a solution. Salinity refers to the concentration/amount of salt in a solution.

According to this question, a student was instructed by his/her teacher to measure the salinity of brine used in curing fish. This means that to do this, the student will have to make use of a SALINOMETER. In order to use the salinometer, the student has to recall and master the procedure in using a salinometer.

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