Bacteria because the molecular genetic tools can be used to dissect gene function and explore the biological processes involved in the normal and pathogenic states
Answer:
These are the events occurring at synapse for the transmission of nerve impulse across the synapse from one neuron to another. The order of events is as follows: 4 - 1 - 5 - 3 - 2.
Explanation:
The correct order of events during the transmission of nerve impulse from one neuron to another is as follows:
4) Action potential reaches axon terminal of presynaptic neuron.
1) Ca2+ enters axon terminal.
5) Neurotransmitter released by exocytosis.
3) Neurotransmitter binds to postsynaptic receptor.
2) Ligand-gated ion channels open in postsynaptic membrane.
- The transmission across the synapse can be either electrical or chemical. Here is this case we are talking about chemical transmission.
- When the action potential reaches the axon terminal, the voltage gated calcium channels open and there is influx of calcium from the synapse.
- This causes the fusion of synaptic vesicles with the membrane and exocytosis of neurotransmitter.
- These neurotransmitters bind to the receptors on post synaptic membrane and cause opening or closing of voltage gated channels.
Each cell becomes a thin plate; these plates pile into layers to form the nail. As with hair, nails form by keratinization. When the nail cells accumulate, the nail pushes forward. The skin below the nail is the matrix.
Hair is made of a tough protein called keratin. A hair follicle anchors each hair into the skin. In the hair bulb, living cells divide and grow to build the hair shaft. Blood vessels nourish the cells in the hair bulb, and deliver hormones that modify hair growth and structure at different times of life
Nails start in the nail root, hidden under the cuticle. When cells at the root of the nail grow, the new nail cells push out the old nail cells. These old cells flatten and harden, thanks to keratin, a protein made by these cells. The newly formed nail then slides along the nail bed, the flat surface under your nails.
The building blocks of protein are amino acids. Multiple amino acids are usually built up together in a string of varying length to give rise to proteins, who are then in turn the building blocks of our muscles.
Answer:
because that way protons can be compartmentalized and form a gradient.
