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How much energy, in kJ, is released when 150 g propane is burned?  C3H8 (g) + 5 O2 (g) → 3 CO2 (g) + 4 H2O (g) + 2201 kJ

Sodium-24 has a half-life of 15 hours.  How much time has passed when only 12.5% of the original sample remains? Give an answer without units

Which if the following are intermolecular interactions between amino acids in proteins.

Write out the DNA complimentary sequence for the small chain of DNA with the sequence: ATCGGCTA

A mutant bacterial cell has a defective aminoacyl-tRNA synthetase that attaches a lysine to tRNAs with the anticodon AAA instead of the normal phenylalanine. What would be a potential consequence for a cell in which this happens? Remember that phenylalanine may be encoded by multiple codons.

Which statement best describes the cancer cell?

The process that uses a messenger RNA (mRNA) as a template for building a protein is known as ______________?

Match the following stages of interphase with the statement that best describes the activities of each phase. 

Match each structure of the DNA replication bubble with the description that best describes the structure. 

A eukaryotic animal would include differentiated muscle and nerve cells.  Muscle cells differ from nerve cells in structure and function mainly because