Question

Urea cycle and TCA cycle are interlinked through
A. Citrulline formed in the second step of urea cycle
B. Arginine formed in the fourth step of urea cycle
C. Fumarate formed in the 4th step of urea cycle
D. Malate formed in the 7th step of TCA cycle

Answer 1

Answer:

At the base of the brain, the carotid and vertebrobasilar arteries form a circle of communicating arteries known as the Circle of Willis. From this circle, other arteries—the anterior cerebral artery (ACA), the middle cerebral artery (MCA), the posterior cerebral artery (PCA)—arise and travel to all parts of the brain.