Identification of Gram Negative Bacilli—Oxidase

Rock out with the second installment of a five-part series on earth materials and processes. Your budding geologists make observations of given rock samples and posit classification systems for rocks. They then learn about the...

Many future doctors earn college science credit by passing the AP biology test while still in high school. Help young scientists prepare for the exam by studying past test questions. Each of the eight questions covers multiple topics...

In this simulation activity, young biologists examine blood types to determine whether the death rate in a hospital was caused because of incorrect identification of patient blood types. You will need obtain and follow the procedures of...

Twenty-six pages of biology questions, mostly in multiple-choice form, are included in the all-encompassing New York State Regents exam. It assesses every topic typically covered in a high-school biology course. Create your own answer...

Many define biology as the study of life but can't agree on a definition of life. Trying to explain all of the domains and subdomains of biology seems a bit easier than defining life. See a full map of the topics covered by the general...

The term stoichiometry derives from the Greek words stoicheion meaning element and metron meaning measure. The second Socratica video in a two-part series within a larger chemistry playlist introduces more complex stoichiometry...

Young scholars sample goodies from an unseen ocean floor and try to accurately describe their composition. This simulation helps students explain the limitations of sampling and the problem of obtaining representative samples of sea...

Amphoteric compounds act as both an acid and a base. Scholars apply their knowledge of the four oxide types while completing four puzzles. They match a sample of each type of oxide with the corresponding reaction.

Scholars use a lab simulation to test contaminated yogurt for bacteria by gram staining. They learn proper lab procedures for handling bacteria and for sterilizing equipment, and then walk through the process on their own to try gram...

Scholars explore the procedure for bacteria sampling in a virtual lab by first walking through a detailed step-by-step procedure of preparing the samples of raw milk and pasteurized milk, growing the bacteria, and comparing results....