Answer:
It is the Central nervous system and the Peripheral nervous system
Explanation:
The central is made up of the brain and spinal cord. The peripheral is made up of nerves that branch off from the spinal cord and extend to all parts of the body
Answer:
The correct answer is option a. "Double-stranded regions of RNA typically take on an B-form right-handed helix".
Explanation:
Most of the native double-stranded DNA is on an B-form right-handed helix, following the structure proposed by Watson and Crick with about 10–10.5 base pairs per turn. However, double-stranded RNA does not follow this structure, and most regions have an A-form structure. The A-form right-handed helix have slightly more base pairs per turn, which makes it 20-25% shorter than B-DNA.
They form memory cells in which those cells remember the same pathogen for faster antibody production, in aid of future infections.
