Answer:
Carbon, hydrogen, Sulphur, nitrogen, oxygen and phosphorus
Explanation:
Carbon, oxygen and hydrogen are the major components of organic compounds which make up our food. Nitrogen is an essential component of proteins. Sulphur and phosphorous are needed for various body functions.
Answer: I think that stress affects the vision because when your mind is only focused on fighting that something or fleeing from it, that's all you're going to see/be focused on.
For example if your mind was focused on "Fight" then that would be what your doing whether you like it or not.
If your mind is focused on "Flight" then you would be trying to escape from whatever it is almost like your body is moving on it's own.
The neuron releases chemical messengers. Otherwise, there would be no 'signal transduction' in the postsynaptic cell. So, your answer is B.
Answer:
1. 2. 4. 5. 7 and 8
Explanation:
3. False: A single stimulus can activate multiple target cells.
6. False: A ligand does not phosphorylate protein residues but can bind and activate kinase receptors resulting in conformational changes that induce intracellular phosphorylation of target protein domains.
9. False: Second messengers relay stimulus to intracellular targets. e.g calcium can act as a second messenger.
