Which structure within a bone contains cartilage cells that divide and increase the size of the bone until adulthood?
a. spongy bone
b. growth plate
c. haversian canals
d. compact bone

Epiphyseal plate is the structure within a bone that contains cartilage cells that divide and increase the size of the bone until adulthood.

The epiphyseal plate, also known as epiphysial plate,or physis, or growth plate, is a hyaline cartilage plate in the metaphysis at each end of a long bone or diaphysis. The plate is found in children and adolescents; in adults, who have stopped growing, the plate is replaced by an epiphyseal line.

The correct answer is letter B. 

The growth plate is a structure within the bone that contains cartilage cells which divide and causes the increase in size of the bone of a person until adulthood. It is known as the epiphyseal growth plate that is attached at the end of a long bone, which stops growing and is replaced eventually by the epiphyseal line. 

The answer is a. i hope this

Sugar + oxygen > carbon  dioxide + water + energy  c6h1206 + 6o2 > 6co2 +6h2o + energy  and the numbers after the element symbols are small.