Related Questions
Correct Answer is C
Explanation
Choice A Reason: This is incorrect because sickle-cell anemia is a genetic disorder that affects the shape and function of the red blood cells. It is not related to the AFP level, which is a protein produced by the fetal liver and yolk sac.
Choice B Reason: This is incorrect because cardiac defects are abnormalities in the structure or function of the heart. They are not related to the AFP level, which is a marker of neural tube defects and abdominal wall defects.
Choice C Reason: This is correct because Down syndrome is a chromosomal disorder that results from an extra copy of chromosome 21. It is associated with a decreased AFP level, as well as increased levels of human chorionic gonadotropin (hCG) and unconjugated estriol (uE3).
Choice D Reason: This is incorrect because respiratory disorders are problems that affect the lungs and breathing. They are not related to the AFP level, which reflects the fetal development and integrity.
Correct Answer is B
Explanation
Choice A: Vitamin E requirements do not decrease during pregnancy due to the increase in body fat. Vitamin E is a fat-soluble vitamin that acts as an antioxidant and protects cell membranes from oxidative damage. The recommended dietary allowance (RDA) for vitamin E during pregnancy is 15 mg/day, which is the same as for non-pregnant women.
Choice B: Prenatal vitamins will meet your need for increased folic acid during pregnancy. Folic acid is a water-soluble vitamin that is essential for DNA synthesis and cell division. Folic acid deficiency can cause neural tube defects in the fetus, such as spina bifida and anencephaly. The RDA for folic acid during pregnancy is 600 mcg/day, which can be obtained from prenatal vitamins and fortified foods.
Choice C: You will not need to double your intake of protein during pregnancy. Protein is a macronutrient that provides amino acids for tissue growth and repair. The RDA for protein during pregnancy is 1.1 g/kg/day, which is only slightly higher than for non-pregnant women (0.8 g/kg/day).
Choice D: You will not need to increase your intake of calcium during pregnancy. Calcium is a mineral that is important for bone health and muscle contraction. Calcium absorption and retention are enhanced during pregnancy, so there is no need to increase the intake above the RDA of 1000 mg/day for women aged 19 to 50 years.
