A. <span>Exposure to an antigen
Exposure to viruses and antigens led to the foundation of modern vaccination. Vaccination introduces an antigenic material that helps the ability of the immune system to adapt a specific pathogen, therefore leading to a long-term immunity.</span>
The hindbrain of the embryo develops into the pons, the medulla oblongata of the spinal cord and the cerebellum.
<h3>What is the cerebellum? </h3>
The cerebellum is a prominent part of the hindbrain and is located just above the brainstem. The cerebellum controls all the voluntary movements of the body and is also responsible for maintaining balance and posture.
The cerebellum is said to make up for 10% of the brain's volume but has more than 50% of the brain's total neurons.
The cerebellum is made up of two parts; a cerebral cortex, a layer made of folded tissue which contains most of the neurons and cerebral nuclei, an inner part which contains the neurons responsible for communication.
Therefore, the hindbrain develops into the pons, medulla oblongata and cerebellum.
Read more about the cerebellum, here
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Answer:
Mitochondria provides energy to the cell
Mitochondria<span> use </span>proteins<span> to break down sugars and produce cellular energy in the form of ATP. ... No matter where </span>mitochondrial proteins are<span> made, they </span>are synthesized<span> on ribosomes that translate messenger RNA into the amino acids that form the </span>protein<span> chain.
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