Some B-vitamins act as coenzymes during the metabolism of protein, fat, and carbohydrates for energy. Fill in the blank about coenzymes. The B-vitamin is part of two coenzymes that help break down glucose, fatty acids, and amino acids. Some B-vitamins act as coenzymes during the metabolism of protein, fat, and carbohydrates for energy. Fill in the blank about coenzymes. The B-vitamin is part of two coenzymes that help break down glucose, fatty acids, and amino acids. iodine thiamin folate riboflavin

Explanation:

Vitamins are essential organic compounds that are required by the organisms in trace amounts to perform specific functions in the process of metabolism and some other. On the basis of functions and structures, solubility and some other properties, vitamins are classified as a vitamin, A, B, C and some other.  The coenzyme is a small organic molecule that plays an important role in the activation of enzyme activity such as niacin and some other. Niacin is related to NAD and NADP coenzymes.

the answer would be 3

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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