The technique used to measure the electrical activity of the brain is: MCQ with Answer and Explanation

Explanation:
Antonie van Leeuwenhoek (1670s) constructed high-quality single-lens microscopes and was the first to observe bacteria, protozoa, sperm cells, and red blood cells, describing them as 'animalcules'. Hooke observed cells in cork. Pasteur disproved spontaneous generation, Lister introduced antiseptic surgery. Leeuwenhoek's pioneering work laid the foundation for microbiology.

Explanation:
The Philadelphia chromosome is a specific genetic abnormality found in the bone marrow cells of most patients with Chronic Myelogenous Leukemia (CML). It is formed by a reciprocal translocation between the long arms of chromosome 9 and chromosome 22, denoted as t(9;22). This translocation fuses the BCR gene on chromosome 22 with the ABL1 gene on chromosome 9, creating a mutant BCR-ABL1 fusion protein with constitutive tyrosine kinase activity, driving uncontrolled cell division.

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.