Which of the Following Is True About Restriction Endonucleases

question 2

Multiple Choice

Which of the following is true about restriction endonucleases?

• A)They make a blunt cut on the two DNA strands so that there are no single-strand regions.
• B)They make staggered cuts on the DNA so that single-strand ends are formed that can be used to insert foreign DNA cut with the same enzyme.
• C)Some make a blunt cut on the two DNA strands so that there are no single-strand regions and some make staggered cuts on the DNA so that single-strand ends are formed that can be used to insert foreign DNA cut with the same enzyme.
• D)Depending on the incubation conditions,the same enzyme can either make a blunt cut on the two DNA strands so that there are no single-strand regions OR make staggered cuts on the DNA so that single-strand ends are formed that can be used to insert foreign DNA cut with the same enzyme.

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Definitions:

General Adaptation Syndrome

The process of physiological stress response consisting of three stages: alarm, resistance, and exhaustion, described by Hans Selye.

Alarm Reaction Stage

The initial phase of the stress response, where the body mobilizes its resources to cope with a stressor, characterized by the activation of the sympathetic nervous system.

Resistance Stage

The second phase of the general adaptation syndrome, where the body adapts to a stressor with increased resistance but at a cost to its resources.

Exhaustion Stage

The final stage of the General Adaptation Syndrome, characterized by depleted physical and mental resources after prolonged exposure to stress.