male gametes that contribute genetic information (DNA) but few or no nutrients to the offspring. the nuclei of the egg and one sperm unite to form the zygote; the other sperm nucleus fuses with the two polar nuclei, forming a triploid (3n) cell. so, a, I believe.
hope I helped!
I think it's follicle-stimulating hormone
Answer:
(b)- zone of hypertrophy
Explanation:
Hypertrophic cells synthesize alkaline phosphatase by calcifying the surrounding area; prevent the diffusion of substances, this causes chondrocyte death; therefore, the matrix degrades and the lagoons converge, then the blood vessels proliferate in the collarete to vascularize the cavity. The primitive periodic cells migrate to the vascular borders to become osteoprogenitor cells which are attached to the cartilaginous spicules leaving the degradation of the calcified cartilage, then they become osteoblasts. The combination of cartilage and bone matrix forms a mixed spicule.
Endochondral bone growth begins in the second trimester of fetal life and goes to adulthood, in it there is presence of epiphyseal cartilage.
The epiphyseal cartilage has several areas including:
<u>Hypertrophy zone</u>: it is composed of large chondrocytes that accumulate glycogen. The matrix is compressed between the hypertrophied cartilaginous columns.
Answer:
с
Explanation:
all new cells come from other cells
Hey guys!
Just wanted to let you know, like the other user commented, C <u>is</u> the correct answer!
