Answer:
a. heart development.
Explanation:
As the third week of fetal development starts, the process of formation of blood vessels begins. Also, the splanchnic mesoderm in the head end of the embryo forms heart on days 18 and 19. Since it develops heart, this part of the mesodermal cells is called the cardiogenic area. The underlying endoderm sends the induction signals to these mesodermal cells to form a pair of endocardial tubes that gradually develop into a single primitive heart tube.
This primitive heart begins to beat by the end of the third week of development. Therefore, any drug that affects fetal development during the first 20 days of the pregnancy might affect the development of the heart.
Organisms with small, expandable bodies, extremely large mouths, and efficient teeth are likely to be found in the bathypelagic zone
Answer:
Exposure to positively charged amino acids (arginine and lysine) is found to clearly stabilize the secondary structure. Kinetically, each amino acid promotes folding by generating a large increase in the folding rate with little change in the unfolding rate.
Answer:
Gray water is somewhat (mostly) clean waste water. It can be from baths, sinks, kitchen appliances, and more.
A cell membrane. Cell membranes are phospholipid bilayers (a.k.a 2 layers of phospholipids)
