When the bread and butter is in mouth, mechanical digestion starts. The size of the food gets reduced and it mixes with saliva for easy swallowing. The salivary amylase in saliva begins the digestion of starch in the bread. This is the start of chemical digestion. When the undigested bread and butter reached the stomach, lower esophageal sphincter relaxes and allow the chewed food to enter. The gastric secretions containing HCl, acts on the undigested food to produce chime. HCl kill the microorganism on the food and also denatures the protein and later attacked by digestive enzyme pepsin. Pepsin breakdown protein in the bread, butter . Later on gastric lipase begins to digest fat present in butter. Digestion of the starch in bread does not occur in the stomach because the salivary amylase that began chemical digestion in mouth became inactive in the presence of HCl. Further the chime enters the small intestine where bile secreted by the gall bladder emulsifies the fat and break into small globule which helps in fat absorption.
Answer:
The characteristic features of the phylum Chordata are a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a tailgut.
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Answer:
DNA polymerase
Explanation:
DNA polymerase is the enzyme that matches and lays down nucleotides to build the daughter DNA strand along each parent DNA strand.
The cause of increase in the snake population most likely due to environmental factors, such as, rainfall, temperature, sunlight, and food availability. Good health in female snakes is also a factor which makes snake population increase. Snakes ensure that their offsprings are born during warm season.
Answer:
Option A, unique hair cells located anywhere along the basilar membrane
Explanation:
When ever a high frequency sound wave is perceived by the Organ of Corti, it magnifies. In the magnification process of Organ of Corti, basilar membrane and along with Organ of Corti moves up and down. On the top of Organ of Corti, the hair cells protrudes. With the movement of basilar and tectorial membranes up and down, the hair cells also move laterally.
Hence, option A is correct
