Centromere Definition The centromere is the point on a chromosome where mitotic spindle fibers attach to pull sister chromatids apart during cell division. When a cell seeks to reproduce itself, it must first make a complete copy of each of its chromosomes, to ensure that their daughter cell receives a full complement of the parent … Read more
Teeth Definition Teeth are hard, mineral-rich structures which are used to chew food. They are not made of bone like the rest of the skeleton, but have their own unique structure to enable them to break down food. Tooth enamel is the most mineralized tissue in the body, consisting mainly of the rock-hard mineral hydroxyapatite. … Read more
Microtubule Definition The microtubules in a cell’s cytoskeleton are microscopic hollow tubes made of the proteins alpha and beta tubulin. This cytoskeleton gives the cell shape and keeps its organelles in place by creating a network of protein filaments. A microtubule measures about 24 nanometers thick, which makes them the largest structure in the cytoskeleton. … Read more
All cells on Earth can be divided into two types: prokaryotes and eukaryotes. Prokaryotes are always unicellular organisms and may be bacteria or archaea. Eukaryotes may be unicellular or multicellular and include plants, animals, fungi, and protists are all made up of eukaryotic cells. Eukaryotic cells are much larger and more complex than prokaryotes and … Read more
Anabolism and catabolism are the two types of biochemical reactions that make up the metabolism. Anabolic reactions involve the building of larger, complex molecules from smaller, simpler ones, and require an input of energy. Catabolic reactions are the opposite of anabolic reactions, and break the chemical bonds in larger, more complex molecules. This process releases energy … Read more
Supine Position Definition In anatomy and medicine, the supine position refers to an organism lying on its back. Any organism with clearly defined ventral and dorsal sides can be described in this way. Supine means lying on one’s back with the dorsal side towards the ground. Supine Position Explained Due to the dorsal side pointing … Read more
The technology we have today is wonderful. There is no such thing as too much help when it comes to studying. I did some research and found 5 of the best study apps for college students. By providing you with organized study materials, these study apps keep you on schedule and on-task. The Best Study … Read more
The Preliminary SAT, or PSAT, is a standardized test that assesses a student’s readiness for college. It is usually taken by high school students in their sophomore or junior year. The PSAT measures a student’s abilities in reading, writing, and math, and it also serves as a practice test for the SAT. But what exactly … Read more