The vitamin that is required for the conversion of prothrombin to thrombin is: MCQ with Answer and Explanation

Explanation:
The oblique entry of the ureters into the bladder creates a valve-like effect, preventing reflux. The urethral sphincter controls urination.

Explanation:
Glycolysis breaks one glucose into two pyruvate, yielding 2 ATP and 2 NADH. It occurs in cytoplasm and is anaerobic.

Explanation:
Amylase (ptyalin in saliva, pancreatic amylase in intestine) hydrolyzes starch (a polysaccharide) into maltose (a disaccharide) and dextrins. Lactase breaks lactose, lipase digests lipids, protease digests proteins. Salivary amylase works at neutral pH, pancreatic amylase in the small intestine. Maltase then breaks maltose into two glucose molecules.