Question

How are red blood cells able to move through narrow vessels to carry oxygen throughout a multicellular organism hey they are small because they're organelles are smaller than those of other cells B they are small because they lack a nucleus see they are long and thin with a tail like end or do they are flexible because they lack of plasma membrane

Answer 1

Red blood cells (RBCs) are able to move through narrow vessels primarily because B) they are small because they lack a nucleus.

Red blood cells are unique in that they are biconcave in shape and lack a nucleus and many other organelles, which allows them to be more flexible. This flexibility is crucial for the cells to squeeze through narrow capillaries in the circulatory system. The absence of a nucleus and organelles also contributes to their overall size and increases the space available for hemoglobin, the protein that carries oxygen. Thus, their small and flexible nature enables them to efficiently transport oxygen throughout a multicellular organism.