In addition to activating or inhibiting enzymes through allosteric regulation, which of these mechanisms do cells also use to control enzymatic activity?  

Which of the following functional groups is unreactive but when added to bases of DNA can alter gene expression?  

Which of the following functional groups gives amino acids their acidic character?  

Which of the following structures is common to plant and animal cells?  

Which of the following cellular processes includes all of the others?  

Which of the following can be attributed to water’s high specific heat?  

A compound contains hydroxyl groups as its predominant functional group. Which of the following properties of the molecule can be predicted with the information provided?  

Which of the following organelles often occupy the majority of the volume of a plant cell?  

What kind of bond is formed between the two hydrogen atoms and the single oxygen atom?  

All the organisms on your campus make up ________.