Aminoacyl tRNA Synthetase: Part 1

The video tutorial explains the role of aminoacyl tRNA synthetase in protein synthesis. It details how this enzyme activates amino acids by attaching them to tRNA, a process essential for transporting amino acids to the ribosome for polymerization into proteins. The tutorial highlights the specificity of tRNA for different amino acids and the energy requirements for this biosynthesis, emphasizing the critical nature of aminoacyl tRNA synthetase for life, as mutations in this enzyme are lethal.

What is the primary function of aminoacyl tRNA synthetase?

• To degrade RNA

• To synthesize ATP

• To attach amino acids to tRNA

• To polymerize proteins

What is required for the ligation of an amino acid to tRNA?

• ATP

• NADH

• FADH2

• GTP

Why is ATP important in protein synthesis?

• It provides the energy needed for amino acid activation

• It is a byproduct of protein synthesis

• It acts as a building block for proteins

• It is not involved in protein synthesis

What happens to protein synthesis if there is a lack of energy?

• It slows down significantly

• It remains unchanged

• It speeds up

• It becomes more efficient

What is the main catalytic component of the ribosome?

• Lipids

• Protein

• Ribosomal RNA

• DNA

What is the role of peptidyl transferase in the ribosome?

• To transport tRNA

• To catalyze peptide bond formation

• To synthesize DNA

• To degrade proteins

Why are mutations in aminoacyl tRNA synthetase considered lethal?

• They enhance protein synthesis

• They prevent ATP synthesis

• They make protein synthesis impossible

• They cause excessive energy production