A by-product of protein catabolism is called__________.
azotemia
creatinine
uric acid
urea
The Correct Answer is D
A. Azotemia is a condition characterized by elevated levels of nitrogenous waste products in the blood, not a direct by-product of protein catabolism.
B. Creatinine is a by-product of muscle metabolism, not directly from protein catabolism.
C. Uric acid is a by-product of nucleic acid metabolism, not protein catabolism.
D. Urea is a primary by-product of protein catabolism, formed in the liver and excreted by the kidneys. This is the correct answer.
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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. Lactose is a sugar in breast milk and is not the only source of nutrition during the first 2-3 days postpartum.
B. Casein is a protein found in breast milk but not the sole source of nutrition for the infant.
C. Colostrum is the nutrient-rich first milk produced by the mother in the first 2-3 days postpartum and provides essential nutrients and antibodies to the newborn.
D. Meconium is the infant's first stool and not a source of nutrition.