Archaeopteryx is considered a connecting link between: MCQ with Answer and Explanation

Explanation:
Lactase is a brush border enzyme of the small intestine that hydrolyzes the disaccharide lactose (milk sugar) into its constituent monosaccharides, glucose and galactose. Maltase acts on maltose, sucrase on sucrose, and amylase on starch. Lactose intolerance results from lactase deficiency, causing gastrointestinal symptoms after dairy consumption.

Explanation:
The thalamus is a paired structure forming the main part of the diencephalon, situated above the brainstem. It is often described as the 'gateway to the cerebral cortex'. Its primary function is to act as a major relay station, receiving almost all incoming sensory information (except olfaction) and motor signals from various parts of the body and the brain, processing them, and then projecting them to the appropriate specific areas of the cerebral cortex. It also plays a role in regulating consciousness, sleep, and alertness.

Explanation:
The cerebrum is the largest and most prominent part of the brain, divided into left and right hemispheres, responsible for higher functions like thought, memory, and voluntary movement. The cerebellum coordinates movement, medulla controls vital functions.