Answer:
Evolution is the process by which populations of organisms change over generations. Genetic variations underlie these changes.
<span>The answer to the question is c. it allows the muscles time to heal. Anytime one does a workout, muscle fiber is damaged from the intensity of the workout. It is therefore wise to switch to another muscle group for the next workout. If one continuously works out the same muscle groups without giving them time to rest, they are at risk for damaging the muscles.</span>
<span>any one of a series of three or more alternative or allelic forms of a gene, only two of which can exist in any normal, diploid individual. Origin of multiple allele Expand.</span>
Answer:
D) In case 1, both PS I and PS II completely lose function; in case 2, a proton gradient is still produced.
Explanation:
The light dependent reaction of photosynthesis, which produces the ATP and NADPH needed in the light independent stage of the process, includes complexes of proteins and pigments called PHOTOSYSTEMS. These photosystems (I and II) are key to the functionality of the light dependent reactions in the thylakoid.
The major pigment present in both photosystems is CHLOROPHYLL A, which absorbs light energy and transfers electrons to the reaction center. Chlorophyll B is only an accessory pigment meaning it can be done without. Hence, if all of the chlorophyll A is inactivated in the algae but leaves chlorophyll B intact as in case 1, both PS I and PS II will lose their function because Chlorophyll A is the major pigment that absorbs light energy in both photosystems.
In case 2, if PS I is inhibited and PS II is unaffected, a PROTON GRADIENT WILL STILL BE PRODUCED because the splitting of water into protons (H+) and electrons (e-) occurs in PSII. Hence, H+ ions can still be pumped into the inner membrane of the thylakoid in order to build a proton gradient even without the occurrence of PS I.
