tRNA Structure and Function Assessment

The video tutorial explains the structure and function of tRNA, which accounts for 15% of total cellular RNA. It contrasts tRNA with mRNA, highlighting tRNA's cloverleaf structure and its role in protein synthesis. The tutorial details the components of tRNA, including the anticodon arm, and describes how tRNA becomes charged with amino acids. It also covers the interaction between tRNA and mRNA during protein synthesis, emphasizing the importance of base pairing and the role of ribosomes.

What percentage of total cellular RNA is made up of tRNA?

• 20%

• 15%

• 10%

• 5%

How does the structure of tRNA differ from that of mRNA?

• Both are linear

• Both are folded

• tRNA is linear, mRNA is folded

• tRNA is folded, mRNA is linear

What is the shape of tRNA often compared to?

• A straight line

• A cloverleaf

• A circle

• A square

Which part of the tRNA is responsible for recognizing the mRNA codon?

• 3' end

• D arm

• Anticodon arm

• Variable arm

What happens when an amino acid attaches to the 3' end of tRNA?

• tRNA becomes linear

• tRNA is degraded

• tRNA becomes charged

• tRNA loses its anticodon

What is the sequence at the 3' terminus of tRNA that allows amino acid attachment?

• GGA

• CCA

• UAA

• AUG

How many different tRNAs are there to transport 20 amino acids?

• 31

• 50

• 20

• 40

Where does the amino acid attach on the tRNA?

• D arm

• Anticodon loop

• 5' end

• 3' end

What is the role of the anticodon loop in tRNA?

• To attach amino acids

• To bind to ribosomes

• To stabilize tRNA structure

• To pair with mRNA codons

What is the primary function of tRNA in protein synthesis?

• To replicate RNA

• To synthesize DNA

• To transport amino acids

• To degrade mRNA