Answer:
is A.
Explanation:
When an action potential reaches the axon terminal, it depolarizes the membrane and opens voltage-gated Na+ channels. Na+ ions enter the cell, further depolarizing the presynaptic membrane. ... Fusion of a vesicle with the presynaptic membrane causes neurotransmitters to be released into the synaptic cleft.
Answer:
The correct answer is- Organ, organelles
Explanation:
Cells comes together and make tissue and different tissue organized to form an organ. So organs are made up of a group of two or more tissue type which perform specific function in an organism. For example, the heart pumps the blood, kidney which filters the blood.
Organelle are microscopic structures in the cell for example nucleus, Golgi, endoplasmic reticulum. Each organelle performs a specific function like organs. Eukaryotes have membrane-bound organelles and prokaryotes lack membrane-bound organelles. Therefore the correct answer is organs and organelle.
There are choices for this question namely:
<span>A) tonsil
B) thymus
C) Peyer's patch
D) appendix
</span>
The correct answer is "tonsil". Tonsils are lymphoid tissue that is found in the oral mucosa. The tonsils are arranged in a ring-like fashion called the Waldeyer's ring. This ring comprises of two tubal tonsils, two palatine tonsils, one adenoid tonsil, and one lingual tonsils. In cases of infection involving the oral mucosa and the pharynx, the tonsils become inflamed as well and the condition is called acute tonsillopharyngitis.
Its call a niche hope this helps :)
