Answer:
A can be right answer because reproduction is completely based on cells where as others r n{t primary function
Question:All known organisms use genetic information to produce protein molecules via the same genetic code. This finding strongly supports the hypothesis that __________.
a) the earliest macromolecules probably arose when lightning struck an oxygen-free atmosphere
b) all organisms are descended from one or a few common ancestors
c) the genetic code readily evolves by natural selection
d) there's only one possible way to encode information in a macromolecule
Answer:
b) all organisms are descended from one or a few common ancestors
Explanation:
Protein synthesis occurs when the nucleotide sequence of the mRNA is read in the form of genetic codes. A specific genetic code specifies the same amino acid in all living beings. For example, the code "UUU" codes for phenylalanine in all the living beings irrespective of their species. This suggests that all the life forms have originated from one or few common ancestors and the genetic code has been preserved during the course of evolution of various species.
Describe the advantage of scientists being organised into teams all around the world to work on the human genome project.
Answer:
true
Explanation:
<em><u>Some water pollution is caused from “point sources” that is discrete locations, from which pollutants are discharged, e.g., a pipe, ditch, ship, or factory smokestack. Point sources originate in large and easy to trace facilities, hence are easier to control. In contrast, pollution from “nonpoint” sources is cumulative, arising from multiple inputs over larger areas, such as farms, city streets, and residential neighbourhoods. Hence, such sources are harder to precisely identify, and because of this uncertainty, nonpoint source pollution is harder to control than the point source.</u></em>
Answer:
Accepted.
Explanation:
As mentioned in the question that a new theory is agreed upon by a vast majority of scientists worldwide. Theory can simply be considered as a set accepted propositions or facts that try to provide an explanation of causes behind a certain phenomenon.
In this case, if vast majority of the scientists believe a particular theory, it is likely to be accepted and can lead to formulation of a scientific law in future.
For example: Mendel's theory of segregation and independent assortment were presented but many scientists did not believe it in start, it took a long time for scientists to accept the theory and ultimately when it was transformed into scientific theory.
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