The role of oxygen in cellular respiration is It accepts electrons and keeps the electron transport chain running.
<h3>What is Cellular respiration?</h3>
Energy is the ability to perform a job or to produce heat. Chemical reactions involve a rearrangement of atoms between substances with rupture or formation of chemical bonds and this generates changes in the energy of the system.
An exothermic reaction is one where energy is released from the system into the environment in the form of heat.
Cellular respiration is carried out in the mitochondria of the cells. There the oxygen absorbed from the external environment is combined with carbohydrates (raw material) to release the chemical energy they contain. Water vapour and carbon dioxide are also released.
Thus, option "A" is correct.
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There's a lot of compounds but one really known one is H2O because it's made out of hydrogen and oxygen atoms.
A root structure that protects buds from fire
helps short-leaf pines resist fires
Answer: Option D
<u>Explanation:</u>
Short leaf pine plant in the struggle for existence under hot scorching fire has developed a root structure that protects the buds from fire. This type of pine is called a fire resistant plant as it survives in the canopy of other trees.
Frequent burns have made them resistant to this fire. This is a wonderful example of how some plants survive in this extreme condition where it has to undergo frequent burns.They can also adopt and survive in drought conditions.
Answer:
Option A
Explanation:
Options
A. most populations were fixed for a single genotype, but genotypes varied among populations
B. average heterozygosity was declining steadily over time
C. individual populations were polymorphic for several loci and most populations were genetically similar to one another
D. all populations were fixed for the same allele at each locus studied
Solution
As per the study conducted by Templeton, it was found that human affect the biodiversity at all biological levels such as genetic, ecosystem, species etc. and behind genetic variation two important factors are genetic drift and gene flow.
Both the gene flow and genetic drift produce opposite results as genetic drift increase variation with in the species but decrease variation with in the local population and the opposite of this happens in gene flow.
Genetic drift has actually lead to speciation of collared lizards among themselves for a specific genotype
Hence, option A is correct
