Answer:
Burning fossil fuels spits out carbon dioxide into the air faster than photosynthesis and other processes can scrub it back out.
Explanation:
C.) New results should be verified by more experiments before it is accepted
Answer:
The building blocks of proteins are amino acids, which contain elements such as H,N,O,C , and more. They are the monomers of the proteins. So, the monomer will be the amino acids, and the polymer will be the proteins themselves
Explanation:
Answer:
The limitations that nerve impulses have are
Explanation:
1). The impulses can move only in one direction.This is because the nerves are structured to allow unidirectional flow.
2). The electrical impulses are quite short acting. The message is only sent in the presence of the stimulus.
Answer:
plasma membrane of the target cell
Explanation:
There are two main types of acetylcholine (ACh)receptors:
- muscarinic ACh receptors (because muscarin as agonist) which are G-protein coupled receptors that initiate slow response. Mostly, they are located in the central nervous system-CNS (involved in the release of neurotransmitters), heart (control of the heart rate), smooth muscles (contraction).
- nicotinic ACh receptors (nicotin is agonist) which are ligand-gated ion channels involved in the fast response. They are located at neuromuscular junctions but also in CNS (involved in synaptic transmission between two neurons).
