Cell Theory

Cell Theory
Words • 968
Pages • 4
In biology, cell theory is a scientific theory that describes the properties of cells, the basic unit of structure in every living thing. The initial development of the theory, during the mid-17th century, was made possible by advances in microscopy; the study of cells is called cell biology. Cell theory states that new cells are formed from pre-existing cells, and that the cell is a fundamental unit of structure, function and organization in all living organisms. It is one of…...
Gram Staining
Words • 1090
Pages • 4
The Gram stain is an useful stain for recognizing and categorizing germs. The Gram stain is a differential stain that enables you to classify germs as either gram positive or gram unfavorable. This gram stain technique was discovered by Hans Christina Gram in 1884. The gram stain procedure separates all bacteria into one of two groups - into gram-negative germs which do not stain purple and into gram-positive cells which does stain purple. Bacteria that decolorize quickly are called gram-negative,…...
Experiment: Cell Membranes and Homeostasis
Words • 870
Pages • 4
Objective(s): The reason for this experiment is to see how starch and iodine affect each other and how a plastic bag works similar to a membrane in certain situations. Introduction: I know prior to doing this experiment that iodine mixed with starch creates a dark color and that most objects, organic and inorganic, naturally experience isotonic reactions. Hypothesis: I think that the potato will absorb more starch than the sweet potato and they will both absorb relatively similar amounts of…...
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