The part of the brain that connects the two cerebral hemispheres is the:
A. Hypothalamus
B. Thalamus
C. Corpus callosum
D. Pons
Answer: Option C
Solution (By JKExamLibrary)
The corpus callosum is a thick band of nerve fibers that connects the left and right cerebral hemispheres, allowing interhemispheric communication. The thalamus is a sensory relay station, hypothalamus regulates homeostasis, pons is part of the brainstem. Severing the corpus callosum results in split-brain syndrome.
Explanation:
Heredity (inheritance) is the transmission of genetic information and traits from parents to offspring through genes. Variation refers to differences among individuals, evolution is the change in heritable traits over generations, and mutation is a change in DNA sequence. Mendel's laws describe the patterns of heredity. Genes are the units of heredity.
Explanation:
Vitamin C (ascorbic acid) is water-soluble and easily destroyed by heat, light, and oxidation. Cooking reduces its content in food. Vitamin A is fat-soluble and relatively stable, D and K also fat-soluble and more stable. Vitamin C must be consumed regularly.
Explanation:
Secretin was the first hormone ever to be identified, marking the birth of endocrinology as a distinct field. It was discovered in 1902 by British physiologists William Bayliss and Ernest Starling. They observed that when acidic chyme entered the duodenum, it stimulated the pancreas to secrete bicarbonate-rich juice, even if all nerves to the pancreas were cut. They concluded that a chemical messenger (which Starling coined the term 'hormone' for in 1905) was released from the intestinal mucosa into the blood to stimulate the pancreas. They named this messenger secretin.
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