Activation of pepsinogen starts when hydrocholoric acid (HCl), which is secreted by the parietal cells partially activates pepsinogen (pepsinogen* in figure). This partially active enzyme then cleaves the peptide from other pepsinogen molecules to form active pepsin.
Answer:
When fat (cholestrol) is accumulated in coronary artery it stops the supply of blood to the heart which results in heart attack (myocardial infarction).
Decreasing the intake of cholestrol decreases the risks of myocardial infarction
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Explanation:
Through a process called homeostasis.
If there is not enough glucose the pancreas secrete glucagon (a hormone) which causes the liver to convert stored glycogen into glucose.
If there is too much glucose, the pancreas release insulin. The insulin binds to insulin receptors on cells telling them to take in glucose. The insulin also tells the liver to convert glucose into glycogen.
Answer: see explanation
Explanation:
A. substrate
B. Active site
C. Enzyme binds with substrate
D. Active site of enzyme
E. Products leaving active site
Simplified enzymatic reaction. The substrate reversibly binds to the active site of the enzyme, forming the enzyme-substrate (ES) complex. The bound substrate is converted to product by catalytic groups in the active site, forming the enzyme-product complex (EP). The bound products are released, returning the enzyme to its unbound form, ready to catalyze another round of converting substrate to product.
They wouldn't live the speed of the train would kill them alone