Which of the three different representations of protein structure is most useful for studying the interior shapes formed by the folds of the protein?
three models of a protein structure.
the first (from left to right) structure is a space-filling model. here, each atom is represented by a ball of specific color.
the second structure is a ribbon model. here, the sequence looks like a ribbon twisted or coiled to match the shape of the protein.
the third structure is a backbone model. here, the sequence is represented as a thread.

The second structure, the ribbon model of protein structure is most useful for studying the interior shapes formed by the folds of protein.

Explanation:

The ribbon model of protein structure is the representation of structure of protein in 3D schematic diagram where colour coding for the different secondary structures can be done for better understanding.

In this model side chain is not shown. Generally, this model of structure is used for the comparison of overall structure of two different proteins.

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.