U5 RNA & Protein Synthesis Corrections

What does RNA stand for?

• Ribonucleic acid
• Reactive-nitrogenous acid
• Ribose nucleus acid
• Reoxidized nucleic acid

In RNA, what base pairs with adenine?

• cytosine
• adenine
• uracil
• guanine

If a DNA strand reads ATT-GGC-CAT, what is the complementary mRNA strand?

• UGG-UUA-AGG
• UAA-CGA-GGA
• UAA-CCG-GUA
• UAA-CCG-AAU

What is the role of the enzyme RNA polymerase in the process of transcription?

• It creates a different template for new base-pairing.
• It transcribes DNA sequences to produce a complementary strand of RNA.
• It creates "start" and "stop" sequences in DNA to control transcription.
• None of the other answer choices

True or False: Translation happens before transcription.

• True
• False

What is the role of tRNA in protein synthesis?

• To carry a copy of the genetic instructions from the nucleus
• To carry amino acids to ribosomes to build the polypeptide
• To bind to DNA and separate the DNA strands
• All of the answer choices

Translate the following mRNA strand: AUG-GGG-AUU-AUC.

• UAC-CCC-UAA-UAG
• methionine - glycine - isoleucine - isoleucine
• methionine - glycine - isoleucine - methionine
• TAC-CCC-TAA-TAG

Based on the diagram shown to the right AND on your knowledge of DNA structure, structures 3 and 4 are held together by...

• a. weak peptide bonds
• b. weak hydrogen bonds
• c. strong covalent bonds
• d. strong peptide bonds

Which is Not a function of proteins?

• Help protect the body
• Contain the recipe to make proteins
• They are key to cell structure and function
• Catalyze chemical reactions

What is the role of mRNA?

• Carry an amino acid to the ribosome
• Copy the instructions from DNA and carry it out of the nucleus
• Make up the ribosomes