Some Extreme Halophiles Maintain High Internal Concentrations of Potassium to Avoid

question 32

Multiple Choice

Some extreme halophiles maintain high internal concentrations of potassium to avoid osmotic shock.What does halophilic bacterial DNA possess that prevents damage from potassium?

• A)A novel nucleotide..
• B)Their DNA is single stranded instead of double stranded.
• C)A high GC content.
• D)The DNA is enclosed inside a protective membrane sac.
• E)The DNA is protected by high concentrations of magnesium ions.

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Definitions:

Assessing Reliability

The process of determining the consistency and stability of a measurement tool or test over time.

Internal Consistency

A measure of reliability which evaluates how strongly items in an assessment are related in a single administration.

Test-Retest

A method of determining the reliability of a test by administering the same test to the same subjects at two different points in time.

Correlation Coefficient

A numeric value that indicates the strength of the relationship between two variables.