The right answer is D) 9 groups of 3 microtubules
Centrioles are the constituents of a so-called centrosome structure: every animal cell has a centrosome, which is made of two centrioles and which together form a functional unit. A centriole consists of nine triplets inclined microtubules, surrounded by a number of proteins.
The correct answer among the choices presented above is option D. The uterus is a pear-shaped muscular organ that houses the developing fetus. It is the organ located in the lower body of a female mammal. It is a major reproductive organ of most mammals.
The place where the ancestral linage splits on a cladogram
Carbon and nitrogen are the two atoms like in each peptide bond
Organelles are the structures within the cytoplasm.