Answer:
Explanation:
Acetylcholine (ACh) is an organic chemical that functions in the brain and body of many types of animals (and humans) as a neurotransmitter.
Neurotransmitter is a chemical message released by nerve cells to send signals to other cells, such as neurons, muscle cells and gland cells.
After a neurotransmitter molecule has been recognized by a post-synaptic receptor, it is released back into the synaptic cleft. Once in the synapse, it must be quickly removed or chemically inactivated in order to prevent constant stimulation of the post-synaptic cell and an excessive firing of action potentials.
Some neurotransmitters are removed from the synaptic cleft by special transporter proteins on the pre-synaptic membrane. These transporter proteins carry the neurotransmitter back into the pre-synaptic cell, where it is either re-packaged into a vesicle and stored until it is once again needed to transmit a chemical message, or broken down by enzymes.
Answer:
the answer is simple ,is B ,Like negative
Answer:
The correct answer will be option- A
Explanation:
Spores are the reproductive unit produced as a result of sexual reproduction and asexual reproduction in both lower and higher plants.
The plant groups like Fungi, Algae, Bryophytes, Pteridophytes and Gymnosperms produce these spores which provides adaptation as they can be dispersed for the long-distance as well as germinate and form an organism.
The spores are formed by the process of sporogenesis which forms four spores from a diploid structure their meiosis which reduces the genetic material to half and maintain the haploid ploidy number.
Thus, option-A is the correct answer.
Answer:
if birth rate become higher than the death rate then the population will increase surely, cuz there are more people who add up to form a population but it's decline rate is lesser.
