Amino acids are acids on one hand, and a base on the other hand.
<h3>What is an acid?</h3>
An acid is a substance that produces hydrogen or hydroxonium ions as the only positively charged ion when it ionizes.
All amino acids have an amine group -
and a carboxylic group -
.
The carboxylic group ionizes such that:

The presence of the amine group enables amino acids to also act as a base.
More on amino acids can be found here: brainly.com/question/14583479
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O+ because it is a general donor to all the positive blood groups
During DNA to RNA transcription, there is a code to follow.A changes to U, T to A, C to G and G to C. This code is strictly followed and guarantees a perfect replication of the DNA sequence in the cell. Therefore for a DNA template like:
G C T T A G T C C A T T
The matching mRNA would be
C G A A U C A G G U A A
Meaning the right answer is the first one.
Answer: THEY ARE INVOLVED IN THE DISASSEMBLY OF THE NUCLEAR ENVELOPE
Explanation: The disassembly of the nuclear envelope is triggered by the cyclin‐dependent kinase at the onset of mitosis. At this point, Integral nuclear membrane proteins diffuse/move into the endoplasmic reticulum (ER) after nuclear envelope breakdown. The nuclear envelope reassembles around compact chromosome mass at late anaphase/telophase and the chromosomes condenses and become visible.
Cellular respiration. Hope that helps :)