Answer:
the liver is inferior
Explanation:
Your heart is above your liver so your heart is superior to your liver and your liver is inferior to your heart(i think that's how it works)
D.many experimental trials with results that support the claims
Answer:
a mutation that blocks the GTPase activity of Ras
Explanation:
A G protein in inactive state is GDP bound but as soon as a guanine exchange factor (GEF) exchanges it with GTP it gets activated which means that in GTP bound state it is active. G - protein has endogenous GTPase activity. Upon interaction of GAP, the GTPase activity of this protein is exhibited. When GAP is present, hydrolysis of GTP into GDP occurs which leads to inactivation of G protein. A mutation which will block GTPase activity of Ras will therefore result in constitutive active signaling even in the absence of ligand binding to it's receptor. In such scenario, GTP will not be hydrolyzed into GDP so signaling will be up-regulated.
Lactic acid is created by our body when we can't breathe fast enough to get enough oxygen. For example, after running a while your muscles might start hurting, and that would be the lactic acid buildup because you couldn't get enough oxygen to keep you going. The reason the lactic acid buildup results in more oxygen is because you need oxygen to get rid of the lactic acid.
Because of different receptor types
Norepinephrine is also known as noradrenaline. It is released in the central nervous system which has a wide set of function in the body. This help in the activation of the flight or fight response by boosting the body to have an increased attention and reaction time. THis can increase the heart rate, dilate blood vessels and increased blood pressure however in other tissue function may vary due to the presence of various receptors that this neurotransmitter can activate.
