1.a 2.c 3.d. 4.b 5.e 6.g 7.f 8.h 9.j 10.i
Answer:
d
Explanation:
because to avoid any spread of disease,one need to get it prevented on time
Acquired traits include things such as calluses on fingers, larger muscle size from exercise or from avoiding predators.
Answer: Before every exercise, you should always do a warm up. A warm up is when you start at a low level of intensity before an exercise. Doing that helps minimize injury and it follows the principle of progression. After an exercise, you should always do a cool down. A cool down is when you go from a high intensity exercise, to a low intensity exercise. Cool down also prevent injury and stabilize your muscle. In conclusion, cool downs and warm ups are very important because it helps prevent injuries.
Hope this helps!
The odorant molecules arrive either directly by diffusion into the mucus, or are supported by transport proteins (odor binding protein or OBP) that allow the hydrophobic molecules - majority - to penetrate the mucus covering the epithelium, and thus to reach the membrane receptors present on the eyelashes of the olfactory neurons. These transport proteins are thought to concentrate odorant molecules on membrane receptors. As ligands, the odorant molecules bind to membrane receptors on the eyelashes, triggering a transduction pathway for a stimulus involving G.olf protein (first messenger), adenylate cyclase, and cAMP ( second messenger). The second messenger causes the opening of ion channels Ca2 + / Na + present on the plasma membrane of the olfactory receptor, these two ions then enter the cell. Ca2 + causes the opening of a Cl- channel, the output of this ion causes depolarization of the membrane so that the olfactory receptor produces action potentials. These impulses will go directly to the olfactory bulb, in the prefrontal region of the brain, where this information (and that of taste) is processed by the body.
