Unit 4 REVIEW

What is the relationship between the three structures shown above?

• DNA is produced by proteins found in the cell.

• DNA is made of proteins found in the cells. 

• DNA controls the production of proteins in a cell. 

• A cell is only composed of DNA and proteins.

Which of the diagrams below represents an RNA molecule?

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Some people have blue eyes and some people have brown eyes. What determines the difference in gene expression?

• The order of phosphate groups

• The sequence of nitrogenous bases

• The location of hydrogen bonds

• The presence of deoxyribose sugars

What determines a protein’s shape and function?

• Order of monosaccharides

• Composition of the ribosomes

• All proteins have the same shape and function

• Order of amino acids

Which of the following best describes the order of events for gene expression?

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The pictures below show two dogs of the same breed that have different coat colors. 

• mitochondria of hair cells.

• cytoplasm of skin cells. 

• genes of every cell.

• membranes of every cell. 

What is the purpose of this process?

• Producing more nucleotides for the DNA sequence

• Preserving genetic information for future generations

• Deleting the information in the sequence produced from the DNA template 

• Transcribing information in the DNA sequence into mRNA 

Which process and product are represented in the diagram below:

• Process: translation; product: protein

• Process: transcription; product: mRNA

• Process: recombination; product: polymerase

• Process: replication; product DNA

A DNA base sequence is shown below:

ACAGTGC 

How would the base sequence be coded on mRNA?

• GUGACAU

• UGUCACG

• CACUGUA

• TGTCACG

The chart above shows which amino acids are coded for by different combinations of mRNA nucleotides.

Use the chart to determine which amino acids are coded for by an mRNA segment that reads CAG GUG.

• isoleucine and arginine

• Arginine and valine

• glutamine and valine

• valine and isoleucine