941. The Tongue____________?

A. Separated from the epiglottis by gloss epiglottic folds
B. Contains foramen caecum which is present on the dorsum of frenulum
C. Contains 6 – 10 circumvallate papilla located posterior to sulcus terminals
D. Embryologically derives from 1st branchial arch only
✅ The correct answer is option A. Separated from the epiglottis by gloss epiglottic folds.

945. Michaelis-Menten hypothesis states that_____________?

A. Rate of enzymatic reaction is independent of substrate concentration
B. Rate of non enzymatic reaction is proportional to substrate concentration
C. Km is the enzyme substrate complex association constant
D. Enzyme- substrate complex formation is essential in enzymatic reaction
✅ The correct answer is option D. Enzyme- substrate complex formation is essential in enzymatic reaction.