What is the ultimate electron acceptor for the electrons captured by the cofactors during glucose decomposition??

Why is it difficult to distinguish the skeleton of a young male from that of a young female?

A) Secondary sexual characteristics that cause skeletal differences between males and females do not appear prior to puberty. B) The sex of child skeletons is always clear because males are taller than females of the same age. C) It is not difficult to distinguish a male from a female child skeleton. D) The characteristic greater density of bone that develops in adult males has not appeared in children. E) The characteristic greater density of bone that develops in adult males has not appeared in children and the characteristic greater density of bone that develops in adult males has not appeared in children.

The effects of aging on tissues result in _____.?

A) ?a decrease in pigments inside the cell B) ?the cells becoming larger C) ?connective tissue becoming progressively more pliable D) ?much tissue hypertrophy

________ results from a severe hyposecretion of thyroid hormones in infants. 

A. Cretinism B. Graves disease C. Myxedema D. Simple goiter

The union of the proximal and middle phalanges form ________ joints.

A. hinge B. pivot C. plane (gliding) D. saddle E. condylar (ellipsoid)