The Steps Involved in a Single PCR Cycle,in the Correct

question 7

Multiple Choice

The steps involved in a single PCR cycle,in the correct order,are

• A) cool to allow DNA strands to anneal, heat to allow primer to anneal, cool to allow DNA polymerase to copy DNA.
• B) heat to denature DNA strands, cool to allow primer to anneal and to allow DNA polymerase to copy DNA.
• C) heat to denature DNA strands and for primer to anneal, cool to allow DNA polymerase to copy DNA.
• D) cool to denature DNA strands, heat to allow primer to anneal, cool to allow DNA polymerase to copy DNA.
• E) cool to allow primer to anneal, heat to denature DNA strands, cool to allow DNA polymerase to copy DNA.

---

Definitions:

Reflex Responses

Automatic, involuntary responses of the nervous system to stimuli, requiring no conscious input.

Ascending Tracts

Nerve pathways that go upwards in the spinal cord and carry sensory information from the body to the brain.

Descending Tracts

Pathways in the spinal cord that transmit motor commands from the brain to the body, controlling voluntary movements.

Spinal Cord

The long, thin, tubular structure made from nervous tissue that extends from the brainstem down the vertebral column, conducting nerve impulses between the brain and the rest of the body.