Answer:
The inactive precursor to the enzyme pepsin that digests proteins in the stomach. (Ans A)
Explanation:
Pepsin is known as a digestive enzyme which is present in humans and other species digestive system. It is produced by the stomach, where it helps to digest the proteins and break down into amino acids which are present in food. In the stomach, a cell is known as a peptic or chief cell that helps to release Pepsinogen.
The Pepsinogen secreted by Chief cells is an inactive form of pepsin, on exposure to HCL (hydrochloric acid secretion from Parietal cells), gets converted to the active enzyme pepsin because HCL provides necessary acidic environments where pepsin work best. Then Pepsin hydrolyzed the proteins to polypeptide and starts protein digestion in the stomach.
Answer:
A
Explanation:
tree roots expel carbon into soil as they grow.
The plastic leaf is non-living because it doesn't need anything to survive like any other living being would. It doesn't need food, water, sunlight, ect.
So what roles do society, politics, and economics play in science?
Economics determines how much money is available to fund scientific research. Certain federal grants come directly out of the national economy, which determines if certain research projects can continue or are cut off.
Politics affect science by passing some bills that directly affects science, congressmen can determine whether those funds from the economy will be used for research or not. Just a side note: wealthy lobbyists control alot of what politicians do, by donating millions into their election campaigns.
Society affects science by our citizens democratically electing those politicians that we think will or will not endorse scientific research projects.
For example, embryonic stem cell research has been under fire by conservatives for taking future babies' cells to study. Liberals, however, tend to be in favor of change and new advances scientifically