ADAT ADAT Biomedical Sciences 5

Question 1

Which component of the electron transport chain is the final electron acceptor?

Accepted Answer

Oxygen

Answer

Molecular oxygen accepts electrons at complex IV and is reduced to water.

Question 2

Which type of joint is the temporomandibular joint classified as functionally?

Accepted Answer

Synovial (diarthrosis)

Answer

The TMJ is a synovial joint permitting free movement in hinge and gliding motions.

Question 3

Which cell type is responsible for bone resorption during remodeling?

Accepted Answer

Osteoclasts

Answer

Osteoclasts are large multinucleated cells that break down bone matrix during remodeling.

Question 4

In DNA replication, which enzyme synthesizes new strands in the 5' to 3' direction?

Accepted Answer

DNA polymerase

Answer

DNA polymerase adds nucleotides to the 3' end, extending the new strand 5' to 3'.

Question 5

Which part of the autonomic nervous system stimulates salivary gland secretion of serous saliva?

Accepted Answer

Parasympathetic nervous system

Answer

Parasympathetic stimulation produces a copious, watery serous secretion from salivary glands.

Advanced Dental Admission Test (ADAT) Practice Test