Protein Synthesis

What does tRNA do? 

• Makes DNA in the Nucleus 
• Delivers Amino Acids to the Ribosomes. 
• Nothing at all. 
• Transcribes DNA in mRNA 

An insertion DNA is when a single or a group of nucleotides are _____________ the DNA strand. 

• added into
• subtracted from
• inverted (flipped flopped) in 
• being duplicated in

Where does translation occur? 

• In the nucleus 
• In the ribosomes. 
• In the Endoplasmic Reticulum. 
• Outside the Cell. 

How does the mRNA leave the nucleus? 

• Through the nuclear membrane 
• Through the front door
• Through the cytoplasm
• Backwards

A mutation is least likely to affect a cell when the mutation

• Reverses the order of AA
• gives the same numbers of bases. 
• Replaces a base with a complimentary base pair. 
• Produces a new codon that codes for the same AA

Mutations can cause 

• A change in DNA 
• Can code for a new amino acid sequence 
• can cause the same amino acid sequence to remain the same. 
• all the above. 

What is the purpose of DNA in protein synthesis? 

• To allow transcription to occur
• To preserve genetic information.
• Produce new bases
• Delete bases

Which enzyme makes mRNA? 

• RNA polymerase 
• Helicase 
• DNA polymerase 
• Lactase 

What process is going on in this photo? 

• Transcription 
• Translation 
• Replication 
• All the above 

If all cells in an organism contain the same copy of DNA, why are there so many different types of cells in an organism?

• cell differentiation is determined by the expression of only specific genes
• there is a different set of DNA in each of the different cell types
• ribonucleic acid creates a different complementary strand depending on the cell type
• cell differentiation is determined by the nucleolus.