BIO 150 - Exam 2

The central dogma states: DNA is ________ into mRNA. mRNA is ________ into proteins.

• Translated, transcribed

• Transcribed, translated

• Replicated, translated

• Translated, replicated

Use the following mRNA sequence to form an amino acid sequence using the table to the right: 5’-AUGCCUGGUACGUGA-3’

• Met Pro Gly Thr

• Thr Gly Pro Met

• Met Leu Gly Ile

• Ile Glu Pro Met

Tags

NGSS.HS-LS1-1

Which of the following levels of protein structure involves folding which creates alpha helices and beta pleated sheets?

• Primary structure

• Secondary structure

• Tertiary structure

• Quaternary structure

Which of the following is NOT true of denaturation in proteins?

• Changes the shape of the protein

• Caused by changes in temperature

• Improves the function of the protein

• Caused by changes in pH

The R group in the amino acid to the right is:

• Hydrophilic - polar

• Hydrophilic - nonpolar

• Hydrophobic - charged

• Hydrophobic - nonpolar

Tags

NGSS.HS-LS1-6

Ribosomes are made up of two major components: 1) protein & 2) _______.

• rRNA

• DNA

• lipids

• mRNA

• tRNA

What does it mean for a tRNA molecule to be charged?

• It holds the amino acid needed for translation

• It has an overall positive charge

• It contains the anticodon

• It has an overall negative charge

During the elongation step of translation, what is the order of movement of tRNA molecules through the ribosomal binding sites?

• E ← P ← A

• E → A → P

• E → P → A

• E ← A ← P

What is the sequence of the anticodon to the following codon: 5’- UGC -3’?

• 5’-ACG-3’

• 5’-GCA-3’

• 5’-UGC-3’

• 5’-CGU-3’

Which of the following is NOT true regarding polycistronic mRNA translation?

• Occurs in prokaryotes

• Initiation of translation can occur at multiple locations

• mRNA strand contains multiple AUG codons

• Occurs in eukaryotes