Which of the following is not involved in chemical digestion?
Oral cavity
Stomach
Small intestine
Large intestine
The Correct Answer is D
A. Oral cavity is involved in chemical digestion through the action of salivary enzymes like amylase.
B. Stomach is involved in chemical digestion with gastric acids and pepsin.
C. Small intestine is a major site for chemical digestion and nutrient absorption.
D. Large intestine is primarily involved in the absorption of water and electrolytes and the formation of feces. It is less involved in chemical digestion compared to the other organs listed.
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Correct Answer is D
Explanation
A. To the lining of the uterine tube: If an embryo attaches to the uterine tube, it results in an ectopic pregnancy, which is not typical or safe.
B. To the myometrium: The myometrium is the muscular layer of the uterus and is not the usual site of embryo attachment.
C. To the perimetrium: The perimetrium is the outermost layer of the uterus and is not involved in embryo implantation. This is incorrect.
D. To the endometrium: The endometrium is the inner lining of the uterus, where the embryo typically implants and attaches. This is the correct answer.
Correct Answer is C
Explanation
A. Lactateis produced during anaerobic metabolism (when oxygen is scarce) as a byproduct of glycolysis, but it is not the direct product of glycolysis itself.
B. Carbon dioxideis a byproduct of cellular respiration, specifically during the Krebs cycle, not glycolysis.
C. Pyruvateis the end product of glycolysis, where glucose is broken down into two molecules of pyruvate.
D. Acetyl-CoAis formed from pyruvate during the transition step before the Krebs cycle, not directly from glycolysis.