PCR Can Be Used to Amplify DNA in a Clinical

question 21

Multiple Choice

PCR can be used to amplify DNA in a clinical sample. The following steps are used in PCR. What is the fourth step?

• A) Incubate at 72°C.
• B) Collect DNA.
• C) Incubate at 94°C.
• D) Incubate at 60°C.
• E) Add DNA polymerase.

---

Definitions:

Kidneys

Vital organs that filter waste products from the blood to be excreted as urine.

Biomedical Research

Scientific studies conducted to advance the understanding of human biology, health, and diseases to develop new treatments and technologies.

Toxic

Refers to substances that are harmful or poisonous to organisms.

Prone

A body position where the individual is lying face down, opposite of supine.