Answer:
Option (3).
Explanation:
The action potential may be defined as the change in the electric potential of the cell that helps in the propagation of the nerve impulse. The resting membrane potential of the cell is -70mV.
Threshold potential may be defined as the minimum potential required to transmit the nerve impulse. If the difference between the excitatory signal and inhibitory signal exceeds the minimum intensity, known as threshold. The propagation of nerve impulse occurs.
Thus, the correct answer is option (3).
Answer:
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Answer: peptide bonds
Explanation:
A peptide bond is a chemical bond formed between two molecules when the carboxyl group of one molecule reacts with the amino group of the other molecule, releasing a molecule of water.
This is a dehydration synthesis reaction (also known as a condensation reaction), and usually occurs between amino acids.
The answer is ureter. They concentrate the urea from nephrons and collect in the bladder. They are larger in diameter (<span>25–30 cm) compared to the proximal and distal tubules, loop of henle and collecting tubules. There is one ureter for each kidney connecting to the bladder. The ureter has smooth muscles that cotract and direct the urine to the bladder
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