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Most bottled waters contain fluoride.
Answer: False.
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Answer:
A) within the lumen of the small intestine.
Explanation:
The pancreas produces a variety of hormone-like amylase, proteases, lipases which can digest the food material.
The proteases like chymotrypsinogen and trypsinogen are produced by the pancreas in their inactive form as if active will digest the organ itself. Therefore these zymogens are stored in the secretory vesicles which release the enzymes in the pancreatic duct.
These zymogens are not activated until they reach the digestive tract that is when these enzymes enter the lumen of the small intestine, the enterokinase present there catalyzes the trypsinogen to trypsin. Trypsin converts the chymotrypsinogen to the chymotrypsin.
Thus, Option-A is the correct answer.
Answer:
The complete breakdown of glucose in the presence of oxygen occurs in two stages: glycolysis and citric acid cycle. The first of these stages occur in the cytoplasm of the cell, and the second stage occurs in organelles called Mitochondria.
Explanation:
The breakdown of glucose occurs in two stages. The first stage occurs inside the cytoplasm, it is called glycolysis. when a molecule of glucose undergoes glycolysis, the following are produced:
2 ATP (Adenosine triphosphate) molecules;
2 water molecules;
2 pyruvate molecules and;
2 NADH (Nicotinamide Adenine dinucleotide) molecules
The second stage occurs in an organelle called Mitochondria, it is called citric acid cycle or tricarboxylic acid or Kreb's cycle. In this stage, the two pyruvate molecules from the glycolytic cycle are reduced to carbon(iv)oxide. The following are produced:
2 ATP molecules;
6 NADH molecules;
2 FADH2 (flavine adenine dinucleotide) and;
4 molecules of carbon(iv) oxide.
The NADH and FADH2 molecules are used in the electron transport chain generates as much as 28 ATP molecules.
