ADAT Biomedical Sciences Flashcards
7 cards from real ADAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 ADAT Biomedical Sciences flashcards as text
Which organelle is primarily responsible for the post-translational modification and packaging of proteins?
Answer: Golgi apparatus
The Golgi apparatus modifies, sorts, and packages proteins for secretion or delivery to organelles.
A resting neuron maintains a negative membrane potential primarily due to which mechanism?
Answer: Na+/K+ ATPase pump activity
The Na+/K+ ATPase pumps 3 Na+ out and 2 K+ in, helping establish the resting potential.
Which of the following bacteria is a primary etiologic agent in the initiation of dental caries?
Answer: Streptococcus mutans
Streptococcus mutans produces acid and adheres to enamel, initiating the caries process.
Which vitamin is essential for the hydroxylation of proline and lysine in collagen synthesis?
Answer: Vitamin C
Vitamin C is a cofactor for prolyl and lysyl hydroxylase, required for stable collagen.
Which region of the nephron is the primary site of glucose and amino acid reabsorption?
Answer: Proximal convoluted tubule
Most glucose and amino acids are reabsorbed via secondary active transport in the proximal convoluted tubule.
MHC class I molecules present antigens primarily to which type of T cell?
Answer: CD8+ cytotoxic T cells
MHC class I presents endogenous peptides to CD8+ cytotoxic T lymphocytes.
Which muscle of mastication is primarily responsible for protrusion of the mandible?
Answer: Lateral pterygoid
The lateral pterygoid muscles pull the mandibular condyles forward, protruding the jaw.