The fact that a blastocyst has been implanted on the
uterine wall can be demonstrated by the presence of
a. human chorionic gonadotropin.
b. progesterone.
c. estrogen.
d. testosterone.
e. second polar body.
Answer: a
You might also like to view...
If you were developing artificial B-cell receptors (BCRs) based on the natural version and wanted to change the BCRs' ability to bind certain antigens, which region of the natural receptor would you alter?
A) transmembrane domain B) amino terminus of light and heavy chains C) carboxy terminus of light and heavy chains D) the region projecting into the cytosol of the cell
Reduction or elimination of a behavioral response due to a repeatedly presented stimulus is called ____
Fill in the blank with the appropriate word.
Eating and digesting a candy bar for energy during a sports event is a good example of
a. catabolism. b. anabolism. c. converting kinetic energy into potential energy. d. metabolism. e. converting potential chemical energy into kinetic chemical energy.
The snakes include some rather short and some incredibly long species, with a variation from about 100 to over 300 vertebrae. What developmental mechanism is the best candidate for changing the number of vertebrae in evolution?
A. Changes in genes that lay down extracellular matrix in bone B. Changes in genes necessary for neural crest development C. Changes in genes that control mitosis D. Changes in the somitogenesis clock Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about the development of vertebrae? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?