Multiple Choice
Which gas is produced as a byproduct during cellular respiration in most eukaryotic cells?
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8. Respiration
Introduction to Cellular Respiration
Multiple Choice
If fertilization has occurred, what will happen to the levels of progesterone in the body?
A
Progesterone levels will remain elevated to support the uterine lining.
B
Progesterone levels will decrease rapidly.
C
Progesterone levels will remain unchanged from pre-ovulation levels.
D
Progesterone levels will fluctuate unpredictably.
Verified step by step guidance1
Step 1: Understand the role of progesterone in the female reproductive system. Progesterone is a hormone produced by the corpus luteum after ovulation. Its primary function is to prepare and maintain the uterine lining for potential implantation of a fertilized egg.
Step 2: Consider what happens if fertilization occurs. When fertilization takes place, the embryo begins to produce human chorionic gonadotropin (hCG), which signals the corpus luteum to continue producing progesterone.
Step 3: Analyze the importance of elevated progesterone levels. Progesterone helps maintain the uterine lining, ensuring it remains thick and nutrient-rich to support the developing embryo.
Step 4: Compare the given answer choices. Eliminate options that contradict the biological role of progesterone during pregnancy, such as 'Progesterone levels will decrease rapidly' or 'Progesterone levels will fluctuate unpredictably.'
Step 5: Select the correct answer based on the biological explanation. Progesterone levels will remain elevated to support the uterine lining during pregnancy.
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