Answer:
Inside the axon terminal of a sending cell are many synaptic vesicles. These are membrane-bound spheres filled with neurotransmitter molecules. There is a small gap between the axon terminal of the presynaptic neuron and the membrane of the postsynaptic cell, and this gap is called the synaptic cleft.
Explanation:
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It’s the water; solute is the thing being dissolve by the solvent
The correct answer is: C) 5ʹ TTT-CCC-AAA-GGG-TTT-CCC
phe-phenylalanine codons: TTT, TTC
pro-proline codons: CCT, CCC, CCA, CCG
lys-lysine codons: AAA, AAG
gly-glycine codons: GGT, GGC, GGA, GGG
phe- phenylalanine codons: TTT, TTC
pro- proline codons: CCT, CCC, CCA, CCG
The process of translation occurs in the cytosol, on the ribosome. The mechanism consists of the addition of one amino acid at a time to the end of the polypeptide being formed. Each amino acid should match to a three nucleotide subsequence of the mRNA (codone). During the process of translation (synthesis of proteins) ribosomes move from 5’ toward the 3' end of mRNA.
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Answer:
1. The presynaptic neuron reaches the synaptic knob and the terminal is depolarized.
2. The electrical voltage gated calcium channels in the presynaptic knob opens.
3. The calcium ions enters through the calcium channel, this calcium ions cause the fusion of the synaptic vesicles to the presynaptic membrane, the cell membrane of an axon terminal that faces the receiving cell.
4. There is neurotransmitter release by the axon terminal of a neuron and bind to and react with the receptors on the dendrites of another neuron e.g. acetylcholine by exocytosis.
5. Acetylcholine diffuses across the synaptic cleft and bind to receptors on the postsynaptic neuron, that is a neuron to the cell body or dendrite of which an electrical impulse is transmitted across a synaptic cleft by the release of a chemical neurotransmitter from the axon terminal of a presynaptic neuron.
6. This causes sodium ion channels in the postsynaptic neuron to open, and sodium ions diffuse in.
7. Excitatory (excited neurons) postsynaptic potentials are created, and if these generator potentials are sufficient then the postsynaptic terminal reaches threshold potential and there is propagation.
Explanation: The nervous system is made up of billions of specialized cells called neurons, it is crucial to have an efficient communication between neurons for normal functioning of the central and peripheral nervous systems. The presynaptic action potential refers to an action potential of neuron before synapse. The above is the sequence of event during the transmission of information across the synaptic cleft
