The developing embryo implants into the uterine lining at about five days after fertilization. At this stage, it is a fluid-filled ball of cells called a ____
Fill in the blank with the appropriate word.
blastula
You might also like to view...
Bacteria captured by white blood cells are collected in vesicles and destroyed by ____
a. smooth ER b. peroxisomes c. Golgi bodies d. ribosomes e. lysosomes
Ten angstroms (Å) is equivalent to _____________¬_ microns (µm)
A. 10.0 B. 1.0 C. 0.1 D. 0.01 E. 0.001
Does a woman ovulate during pregnancy? Why or why not?
A. No, because the developing embryo prevents any new blastulas from implanting. B. Yes, because the ovarian cycle continues to function. C. No, because she doesn't have any more follicles in the ovaries. D. No, because negative feedback on the hypothalamus prevents new follicles from maturing. E. Yes, because the uterine cycle continues to function.
A mushroom is the fleshy, spore bearing reproductive structure of some fungi.
a. true b. false