Answer:
Every species has only unique proteins. FALSE
Determining sequence homology is an important tool for predicting protein structure and function. TRUE
Protein function is directly related to the protein's tertiary structure. TRUE
Protein function can be predicted from amino acid sequence. TRUE
The tertiary structure of a protein is more highly conserved than the primary structure. TRUE
Explanation:
Every species has only unique proteins. FALSE
There are homolog proteins among species, that share ancestry. It can be for a speciaton events, and this are called orthologs, or due a gene duplication event, and this are called paralogs.
Determining sequence homology is an important tool for predicting protein structure and function. TRUE
Sequence homology of an unknown protein can be useful since the primary structure can be used for modeling the protein structure, and also this information can be compared with databases of proteins of known function and retrieve predictive information about this protein function. Proteins with similar amino acid sequence usually do similar biochemical functions.
Protein function is directly related to the protein's tertiary structure. TRUE
In most cases, structure dictates the biochemical function of the protein. Protein functions are as diverse as protein structures.
Protein function can be predicted from amino acid sequence. TRUE
The primary structure (sequence of aminoacids) can lead to the elucidation of the secondary and tertiary structure of the proteins, since the sequence of the residues, and the nature of them (hydrophobic, aromatic, hydrophilic, basic, etc). This will shape the tridimensional form of the protein.
The tertiary structure of a protein is more highly conserved than the primary structure. TRUE
There can be changes in the amino acid sequences, but if they are amino acids of the same family, they will interact similar and maintain the tertiary structure with minimum changes.
