What is carrier in biology

It is "respiration" because it utilizes oxygen. Know the different stages of cell respiration in this tutorial This tutorial presents Gregor Mendel's law of dominance. Learn more about this form of inheritance and how it can be predicted using a Punnett square Cell Biology. Skip to content Main Navigation Search. Dictionary Articles Tutorials Biology Forum.

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Driving Discovery. Highlighted Scientific Opportunities. The son of a woman who is a carrier of a recessive X-linked disorder will have a 50 percent chance of being affected.

A daughter will not be affected, but she will have a 50 percent chance of being a carrier like her mother. Electrochemical Gradient An important membrane adaption for active transport is the presence of specific carrier proteins or pumps to facilitate movement.

These three types of carrier proteins are also found in facilitated diffusion, but they do not require ATP to work in that process. Both of these are antiporter carrier proteins. Electron Transport Chain The electron transport chain uses the electrons from electron carriers to create a chemical gradient that can be used to power oxidative phosphorylation.

The electron transport chain is an aggregation of four of these complexes labeled I through IV , together with associated mobile electron carriers. Control of Catabolic Pathways Catabolic pathways are controlled by enzymes, proteins, electron carriers , and pumps that ensure that the remaining reactions can proceed. Enzymes, proteins, electron carriers , and pumps that play roles in glycolysis, the citric acid cycle, and the electron transport chain tend to catalyze non-reversible reactions.