Answer:
Its 0.075
Explanation:
B. Advantageous traits become more common in a population
C. Inherited traits pass consistently through generations
D. Organisms choose which traits to look for in their offspring
The correct answer would be option B
Natural Selection is a phenomenon in which the the traits that is advantageous for the population is common in a population.
These changes evolve over a period of time. The organisms having some change in the characters due to mutation survives and the organism lacking these features die.
These characters are then transferred from one generation to another and becomes common in a population.
b. mitochondria
c. ribosomes
d. endoplasmic membrane
Answer: The anwer is (B) Mitochondria
Explanation:
Answer;
High-energy electrons pump hydrogen ions against the concentration gradient.
Explanation;
-The electron transport chain sets up a proton concentration gradient across the inner mitochondrial membrane, with more protons outside the membrane.
-As a result of this gradient, the protons are waiting to get across the membrane. This happens through the transmembrane protein ATP synthase, which uses the energy moving protons through its pore to add a phosphate to ADP, thus producing ATP.
During the electron transport chain, ATP synthase leads to the production of large amounts of ATP.
Further Explanation:
Electron transport chain mainly occurs in mitochondria. The electron transport chain sets up a proton concentration gradient across the mitochondrial inner membrane, with more protons outside the membrane. Due to this concentration gradient, the protons are going outside the membrane. This movement is possible due to transmembrane protein, ATP synthase.
The ATP is produced by the use of proton motive force this reaction is catalyzed by ATP synthase. This multiprotein synthase is also well-known as F0 F1 complex .The ATP molecule is synthesized when proton flow back from the inner membrane down the electrochemical proton gradient. ATP synthase mainly has two components F1 ATPase and F0 which is fixed in the inner membrane and contain alpha, beta and C unit.
As the electrons travel along the electron transport chain, energy is released which helps in the pumping of protons (ions) into the lumen from the stroma through the thylakoid membrane. A proton gradient is allows the movement of protons back to the stroma which in turn results in the formation of ATP through membrane-bound ATP synthase
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Plant Cell
Keywords:
ATP synthase, membrane, alpha, beta, proton motive force, Electron transport chain, mitochondria, thylakoid membrane, stroma, energy, proton.