For example, pH can have an effect of the state of ionization of acidic or basic amino acids. Acidic amino acids have carboxyl functional groups in their side chains. Basic amino acids have amine functional groups in their side chains. If the state of ionization of amino acids in a protein is altered then the ionic bonds that help to determine the 3-D shape of the protein can be altered. This can lead to altered protein recognition or an enzyme might become inactive.
Changes in pH may not only affect the shape of an enzyme but it may also change the shape or charge properties of the substrate so that either the substrate connot bind to the active site or it cannot undergo catalysis.
In geneal enzyme have a pH optimum. However the optimum is not the same for each enzyme.
Answer: D. Passed on from parent to offspring
carbon dioxide leaves the body through their respiratory system (lungs)
Physical Quantities are those quantities that can be measured, either directly or indirectly.
Example : the SPEED of light, MASS of Earth, TEMPERATURE of the Sun, LENGTH of the cardboard, FORCE, TORQUE, etc
(The quantities in bold are physical ones)
Non- Physical Quantities are those which cannot be measured directly or indirectly.
Example : Your LOVE, basically all the feelings
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Ali Abdulla
, professor of physics
Answered 3 years ago · Author has 12.3K answers and 3.6M answer views
