Determine the number of possible genetic codes. Class members are challenged to determine the number of possibilities of a genetic code that is 20 bases long. They continue to explore the average lengths of broken RNA molecules.

This passage will test your knowledge on enzymes.

Practice for the MCAT by answering questions on Glucose-6-Phosphate Dehydrogenase Deficiency.

Questions related to controlling enzyme activity.

A quick, five question review over various concepts of chemical reactions.

Read the passage "Preventing Lipopolysaccharide Formation in Cystic Fibrosis Patients" and complete the five-question quiz.

Read this passage and study the graphic to complete a five-question quiz concerning the heart attack.

Practice for the MCAT by answering questions based on the given graphs about pancreatitis.

Read a passage about chemotherapeutic agents and answer the follow-up questions using the graphs provided.

Practice for the MCAT by reading a passage about ACE inhibitors and the renal regulation of blood pressure and answer the follow-up questions based on the provided graph.

Two multiple-choice quizzes, one on the processes and types of biological molecules, the other on the structure and replication of DNA.

Practice for the MCAT with the following questions about cell membrane diseases.

Read a passage about recombinant DNA technology and answer the follow-up questions.

MCAT style passage and practice questions over lactate dehydrogenase and exhausted athletes.

Practice questions on how muscles rely on lactate dehydrogenase.

Read a passage about the genetic basis of Phenylketonuria(PKU) and answer the follow-up questions.

Read a passage about sarin gas and its effects on the body and answer the follow-up questions.