Protein Synthesis

How do cells make proteins from DNA?

• By transcribing DNA into mRNA as instructions to make a protein.

• By transcribing DNA into tRNA as instructions to make a protein.

• By transcribing DNA into rRNA as instructions to make a protein.

• DNA can be directly used to make a protein.

Tags

NGSS.HS-LS1-1

Which amino acid must be at the beginning of the chain to start translation?

• Asp (D)

• Met (M)

• Gln (Q)

• Trp (W)

• Val (V)

What is the difference between a charged an uncharged tRNA?

• A charged tRNA is carrying an amino acid while an uncharged tRNA does not.

• A charged tRNA has no amino acid while an uncharged tRNA does.

• There is no difference between a charged and uncharged tRNA molecule.

In this image, what are the anticodon nucleotides that is carrying the Ala amino acid?

• GCC

• GCU

• GCA

• CGG

Which is the correct order of protein assembly in cells?

• DNA -> protein -> RNA

• protein -> DNA -> RNA

• RNA -> protein -> DNA

• DNA -> RNA -> protein

Tags

NGSS.HS-LS1-1

RNAs do all of the following in the cell EXCEPT...

• Carry amino acids to the ribosome.

• Hold the cell together.

• Speed up cellular processes.

• Switch cellular machinery on and off.

• Carry coded messages from the nucleus to the factory floor (ribosomes).

Every three nucleotide letters of an mRNA are called...

• amino acids

• tRNA

• codons

• anticodons

How many amino acids can be made from 1500 nucleotides of mRNA?

• 500 amino acids

• 1500 amino acids

• 750 amino acids

• 150 amino acids

Which amino acid is made from the mRNA code CCU ?

• Arg (R)

• Thr (T)

• Leu (L)

• Pro (P)

Which of these mRNA codes for a STOP amino acid(s)? Choose all that apply.

• UAA

• UAG

• UGA

• AUG