When an allosteric enzyme is directly affected by a molecule that is not its substrate, this effect on the enzyme is called a heterotropic effect.
<h3>What is an allosteric enzyme?</h3>
Allosteric enzymes are catalysts that exhibit a site for binding that is distinct from the active site.
Allosteric enzymes are controlled by many effector compounds that can bind to different sites.
The active site of the enzyme is the molecular domain of this protein where reactants can bind during a chemical reaction.
The heterotropic effects occur when the ligands of allosteric modulators (effectors) are linked to the enzyme.
An allosteric modulator is a molecule that binds to the enzyme in a site different to the active site and this binding alters its tridimensional conformation, thereby activating it or deactivating it.
In conclusion, when an allosteric enzyme is directly affected by a molecule that is not its substrate, this effect on the enzyme is called a heterotropic effect.
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Secretin stimulates the pancreas to secrete bicarbonate. While Cholecytokin in CCKstimulates the pancreas to secrete pancreatic enzymes. Secretin is a hormone that regulates water homeostasis throughout the body and influences the environment of the duodenum by regulating secretions in the stomach, pancreas, and liver. It is a peptide hormone produced in the S cells of the duodenum, which are located in the intestinal glands. The principals target for secretin is the pancreas, which responds by secreting a bicarbonate-rich fluid, which flows into the first part of the intestine through the pancreatic duct.
Answer:
punnett square
Explanation:
The punnett square refers to the grid structure that is used to predict the outcome of a genetic cross. It was first developed by Reginald Punnett and hence named so. For the purpose, the types of gametes and their respective frequencies from a parent are written across the top. The gametes and their frequencies from the other parent are written on the left side of the grid. The squares are then filled in with the resulting combinations of gametes from the two parents. In this way, a punnett square allows direct calculation of the probabilities of occurrence of all possible offspring of a genetic cross.
Answer:
The answer is E
Explanation:
This is because secondary endosymbiosis occurs when one living cell engulfs another cell that has undergone primary endosymbiosis. It means that there are now more membranes layers, one from the engulfed cell/organism and the other from the engulfed bateria/cell during the primary endosymbiosis.
This major species of protist undergo endosymbiosis, where one cell engulfs another such that the engulfed cell survives and both cells benefit i.e it allowed the engulfed cell to conduct photosynthesis through the presence of chloroplast.
