When a cell forms an amino acid by adding an amine group derived from ammonia to a precursor metabolite, this process is called?

The process of adding an amine group to any organic molecule is known as amination. The aminase enzymes catalyze these processes. So, the creation of any amine group is amination. The cells of the body forms amino acid when an amine group is added to amino acid which is derived from the ammonia.

Hence, the correct answer is 'amination'.

answer: angiosperms

dicots

angiosperms are highly evolved plants, they produce seeds which are enclosed within in a carple. these are the largest group of plants on earth. they include trees, shrubs, herbs and small flowering plants. angiosperms exhibit a flowering stage in their life cycle. the flower serves the function of reproduction and fruit formation in majority of angiosperms. dicot is the term used to describe flowering plants that have two seed leaves. dicots are plants which develop seeds which split into two parts called cotyledons. each cotyledon contains one embryo.

here, a small purple flower development indicates that the plant belongs to angiosperms and having two embryonic leaves indicates it belongs to dicots.  

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.