The correct answer is option (B) lemon juice.
pH refers to the logarithmic scale used to indicate the acidity or basicity of an aqueous solution. It is the negative of the base 10 logarithm of the activity of the hydrogen ion. Solutions with a pH less that 7 are considered acidic and the solutions with a pH greater that 7 are considered to be basic. A pH of 7 is neither an acid nor a base and is considered neutral.
An acid has a high concentration of hydrogen ions (H+) and a base has a low concentration of hydrogen ions. Higher the hydrogen ion concentration, pH is acidic. Among the given substances, lemon juice has a pH of 2, urine has a pH of 6, tomato juice has a pH of 4 and black coffee has a pH of 5. Since lemon juice has a pH of 2, it has the lowest –OH ion concentration.
Answer:
false
Explanation:
landform was not related ti biology it is geography
The answer to your question is false cause…<span>Diffusion and osmosis are related concepts, which involve movement of materials from areas of high concentration to areas of low concentration. Diffusion involves movement of any chemical from one place to another; osmosis refers to movement of water across a membrane. Only water can undergo osmosis.</span>
Answer:
■Gene sequences would be used to make Probes for both the Southern and Northern blots.
■The probes will be used to view the presence of each gene with the use of isolated genomic DNA obtained from the isolated bacterium
■Each probes hybridized to the genome shows the pathway is isolated and point of the genes were involved in the substrate catabolism
■The carbon source in the isolate is derived from the substrate inducing the catabolic pathway as RNA determine transcripts present
■Probes hybridizing to the same sequences would be used to determine the gene activity for the pathway as seen in the southern one
■since all the genes present in the genome couldn't be identified, the northern would be important to work on
■Catabolic pathway is determined by the same genes. Hence, the need for gene/transcript probes to hybridize to the transcriptome.
