The organ that provides mechanical protection and nutritional support for the developing embryo is the select one: a. vagina. b. uterus. c. cervix. d. uterine tube.

The right option is b. uterus

Uterus is the organ that provides mechanical protection and nutritional support for the developing embryo. Uterus is an organ in the female reproductive system in which a baby is conceived and develops until birth. The uterus’s main function is to hold, protect and nourish a fetus until it is ready for birth.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.