D- Biosphere
The part of the earth and its atmosphere in which living organisms exist or that is capable of supporting life
Ed happens because of Problems with blood flow
Agents that paralyze skeletal muscle by simple competitive inhibition of acetylcholine at muscle receptor sites are called?
a. nondepolarizing
b. depolarizing
c. antagonizing
d. repolarizing
Answer:
a. nondepolarizing
Explanation:
As the nerve impulse arrives, the synaptic end bulbs of the motor neurons release acetylcholine in the synapse. Acetylcholine binds to its receptors present at the motor endplate. This results in the opening of an ion channel in the ACh receptor to allow the movement of the Na+ into the cell. This makes the inside of the muscle fiber more positively charged, that is, depolarized.
Depolarization triggers a muscle action potential. Drugs or chemicals that paralyze skeletal muscle by competitive inhibition of acetylcholine at muscle receptor sites are called non-depolarizing as they do not allow the acetylcholine to facilitate the depolarization of the muscle fiber.
Answer:
1.Pancreas 2.Pepsin
Explanation:
1.Esophagus and Large intestine are both parts of the alimentary canal.Alimentary canal is a part of the digestive system that moves along from mouth to anus.
2.Pepsin is an enzyme secreted by the stomach lining,basically the chief cells present in the epithellium of stomach Whereas Glucose is metabolized to glycogen and is stored for energy the body.Glycogen is formed by glycogenesis from glucose.
Answer:
3. The ETC cannot establish a proton gradient to drive chemiosmotic production of ATP
Explanation:
Reduction of FAD+ and NAD+ during glycolysis and Kreb's cycle produces FADH2 and NADH respectively which in turn give their electrons to the molecular oxygen via electron transport chain (ETC). This electron transfer is accompanied by the pumping of protons towards the inter-membrane space resulting in the generation of an electrochemical gradient.
The energy of the electrochemical gradient is harnessed to drive ATP synthesis. The process is called chemiosmotic ATP synthesis. The mentioned insecticide would not allow the FADH2 and NADH to reduce oxygen and no electrochemical gradient is developed to drive the chemiosmotic production of ATP.
