A simple epithelium has cells that form a single layer that are attached to the basement membrane. A stratified epithelium, on the other hand, consists of multiple layers of cells where only the basal layers are attached to the basement membrane.Know More
The epithelium is one of the four major tissues in the body. It is made up of cells that are usually arranged in sheets or tubules that are connected to the underlying basement membrane. The epithelium serves as a covering for a number of internal and external surfaces of the body, and it can form glandular structures.
Different types of epithelia are classified according to the shape of the cells and whether or not the cells are layered. A simple epithelium may also appear as stratified and this type is classified as "pseudostratified epithelium." The cells that make up the epithelium are classified according to shape. These classifications are squamous (flat), cuboidal and columnar.Learn more about Biology
The McKinley Health Center reports that macronutrients are those that provide calories for energy, including proteins, carbohydrates and fats, and micronutrients, which include vitamins and minerals, are those that are necessary for maintaining good health. Humans need to consume relatively large amounts of macronutrients, but micronutrients are generally required in much smaller quantities.Full Answer >
Mildew is generally white or grey, and mold is black or green. Mold normally grows on food, and mildew grows on damp surfaces. Mildew has a flat growth, while mold has a multicellular or complex form.Full Answer >
Bacteria and protozoa are very distantly related, with bacteria classified as prokaryotes and protists as eukaryotes. This means that protozoa are more closely related to humans than either is to bacteria. The two organisms are structurally distinct. Bacterial cells lack a nucleus, and protozoa contain organelles, such as mitochondria.Full Answer >
The main difference between zooplankton and phytoplankton is that phytoplankton has the ability to manufacture its own food through photosynthesis or chemosynthesis. Zooplanktons are incapable of making their own food. Zooplanktons are animal planktons,while phytoplanktons are planktons that are capable of carrying out photosynthesis.Full Answer >