Apple on tree ripens, ripe apple produces ethylene, ethylene signals neighboring apples to ripen, neighbor apples produce more ethylene, more apples ripen. The above process is an example of which of the following?

Pyruvate contains how many carbons?

______________ was the first successful technique for bonding dental materials to tooth structure, creating a microscopically rough enamel surface.

Which of the following is not a structure used for locomotion by protists?

Which of the following statements are true regarding Gram positive cells? (choose all correct answers)

A cell lacking which of the following structures is most likely to be a prokaryote?

Which protist is a concern because of its ability to contaminate water supplies and cause diarrheal illness?

The autoclave uses which of the following mechanism(s) for sterilization?

All cells (prokaryotic and eukaryotic) have which of the following?

You plan to compare two different diets that are used to feed tadpoles raised in a lab. One diet is meat-based fish food. The other diet is the traditional diet of boiled lettuce. You want to know if the meat-based diet will be associated with an increase in the average overall weight of the tadpoles. In the experiment you keep all other factors such as temperature, pH, tadpole density per pan, and amount of food constant (controlled variables). The only thing that is different is the type of food between the two groups. Based on the information provided, what is the dependent variable?