Explanation:
To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = - log [H3O+].
A, c, b i think. good luck!
Answer:
Scientists might replicate a strand of DNA using PCR before sequencing it. Once the sequence is known, they can produce a corresponding gene probe
Explanation:
PCR refers to the polymerase chain reaction that amplifies the small sample of DNA into multiple copies in three steps. These steps are denaturation of sample DNA to produce single-stranded template strand, binding of primer to the template and elongation. The multiple copies of the sample DNA are then used to decipher its sequence using various sequencing methods.
Once the sequence of the sample DNA is known, the short, single-stranded DNA molecules that are complementary to the specific sequence of DNA are formed. These single-stranded DNA molecules are called DNA probe and are used to detect the specific nucleotide sequence in some other sample DNA.
Answer:
DNA markers can serve as a proxy for the genome and hence can be used in the identification of any organism or individual organism including humans. Highly repetitive sequences of DNA called STRs:<u>can be used in DNA fingerprinting for forensic purposes</u>
Explanation:
Short Tandem repeats (STRs) consist of short sequences of neucleotides that are repeated many times tandemly.
STR analysis is a technique for producing and comparing DNA fingerprints that reflect the lengths of STR sequences at specific sites in the genome hence <u>can be used in DNA fingerprinting for forensic purposes</u>
<u>It has been extremely successflu for use in personal identification of criminal suspects, paternity issues, as well as indentification of diseases.</u>
The correct answer to this question is "B. Bacteria and Archaea .
Based on the table, the domains that contain only one cell type is the Bacteria and Archaea. The archaea constitute a domain and kingdom of single-celled microorganisms.