The ____ is the cluster of cells in the center of the zygote that will eventually develop into the baby.
a. Amnion
b. stem cell
c. germ disc
d. placenta
Question 2
Which statement concerning the timing of puberty in males and females is true?
a. The onset of menarche in females typically occurs a few years prior to the typical onset of spermarche in males.
b. The onset of menarche in females typically occurs a few years after to the typical onset of spermarche in males.
c. The onset of menarche in females typically occurs around the same time as the onset of spermarche in males.
d. The onset of menarche in females typically occurs almost a decade after the typical onset of spermarche in males.
Nurse bees tending to brood in cells both open and capped with beeswax.
Melanopsin-Containing Ganglion Cells in the Retina
The Kaaba, center of the Haram Mosque, Mecca, Saudi Arabia.
Plasma insulin binds to receptors on target cells to enter the cells, which starts actions that lead ...
Intracellular relationships involving the glyoxylate cycle in plant cells
In the retina, there are two types of light receptor cells: Rods are sensitive to differences in lig