I don’t know if this is a question but yes a controlled experiment allows you to isolate and test the hypothesis
Answer:
b) opening calcium pores in the membrane
Explanation:
The opening of calcium ions channels facilitates the migration of vesicles containing neurotransmitters in the pre-synaptic neurons to the tip of the post-synaptic membrane. at the <u>neuromuscular junction </u>These neurotransmitters can either be <u>cholinergic or non-chorlinergic.</u> <u>At the tip of the pre-synaptic membranes the vesicles empty their neurotransmitter contents into the synapse.</u>
The neurotransmitters, diffuse through the neuromuscular junction to bind with the receptors on the <u>post-synaptic membrane on the post-synaptic neuron.</u> This stimulates opening of<u> ligand gated sodium ions,</u> and sodium ions diffuse into the post-synaptic neuronal membrane, to cause <u>depolarization</u>. if the stimulus is up to the threshold levels it generate action potential.
Therefore , more calcium ions channels opening produces; more diffusion of neurotransmitters;leading to opening of more sodium channels for depolarization; and IPSP or EPSP generation.
Answer: True
Explanation: The cell was placed in a hypotonic environment meaning that the concentration of water was higher outside the cell membrane than inside so water entered the cell.
The statement that correctly compares nucleis acids and carbohydrates is that they both contain carbon, but only nucleic acids contaion phosphorus.
Answer:
recycling used materials, planting more trees to keep the vegetation at a decent lvl ،putting restrictions on and over factories, etc...
