Practice Questions

TLS Online TPP Program

#Question id: 703

Which of the following statements concerning protein domains is true?

#Unit 1. Molecules and their Interaction Relevant to Biology

They are a form of secondary structure.
They are examples of structural motifs.
They consist of separate polypeptide chains (subunits).
They may retain their correct shape even when separated from the rest of the protein.

More Questions

#Question id: 4129

#Unit 3. Fundamental Processes

Which of the following statements about the tRNA that normally accepts phenylalanine is false? (mRNA codons for phenylalanine are UUU and UUC.)

#Question id: 4130

#Unit 3. Fundamental Processes

Which of the following is not true of tRNA molecules?

#Question id: 4131

#Unit 3. Fundamental Processes

Aminoacyl-tRNA synthetases (amino acid activating enzymes):

#Question id: 4133

#Unit 3. Fundamental Processes

Which of the following statements about aminoacyl-tRNA synthetases is false?

#Question id: 4134

#Unit 3. Fundamental Processes

The enzyme that attaches an amino acid to a tRNA (aminoacyl-tRNA synthetase):

#Question id: 4135

#Unit 3. Fundamental Processes

In the “activation” of an amino acid for protein synthesis: