PBS Semester 1 Final Review

Front

Which blood vessel carries oxygenated blood to the body?

Back

Aorta

Front

What are proteins produced by the immune system that destroy foreign substances?

Back

Antibodies

Front

Which blood type is known as the universal donor?

Back

O-

Front

Why do the fragments of DNA in gel electrophoresis travel away from the negative electrode?

Back

DNA is negatively charged so attracted to the positive end of the unit.

Front

What is the primary purpose of using restriction enzymes in gel electrophoresis?

Back

It allows the strands of DNA to be cut into various lengths for testing.

Front

What is the function of the aorta in the circulatory system?

Back

The aorta carries oxygenated blood from the heart to the rest of the body.

Front

Define antibodies.

Back

Antibodies are proteins produced by the immune system to identify and neutralize foreign objects like bacteria and viruses.

Front

What is the significance of blood type O- in transfusions?

Back

Blood type O- is known as the universal donor because it can be given to patients of any blood type.

Front

Explain the role of gel electrophoresis in DNA analysis.

Back

Gel electrophoresis is used to separate DNA fragments based on their size, allowing for analysis and comparison.

Front

What is the charge of DNA and how does it affect its movement in gel electrophoresis?

Back

DNA is negatively charged, causing it to move towards the positive electrode in gel electrophoresis.