The answer is: All nucleotides have a phosphorus atom that can be replaced with 32P.
DNA building blocks are nucleotides. Nucleotides contain a nitrogenous base, a five-carbon sugar, and, at least, one phosphate group. Exactly that phosphate group in the nucleotide has the phosphorus atom. Therefore, the phosphorus atom in the nucleotide can be replaced with radioactive phosphorus-32 (32P). This replacement has a wide use in labeling nucleic acids and thereby visualizing the target molecule.
Answer:
B. the fresh water is hypertonic and the salt solution is hypotonic to the cells of the celery stalks.
Explanation:
A hypertonic medium is precisely one that has a higher solute concentration than another medium. This, in turn, is hypotonic compared to the former. Thus, these classifications can only be employed in the sense of comparison and not as the primary definition of the osmotic characteristic of a solution.
When a cell is placed in a hypertonic solution, that cell tends to seek osmotic balance and absorbs some of the solution's solutes becoming rigid and hard. For this reason, we can say that fresh water is hypertonic in relation to celery stem cells.
On the other hand, when the solution is hypotonic, the cell trying to reach an osmotic equilibrium loses part of its solutes to the solution, becoming soft and flabby. For this reason, we can say that saline is hypotonic for celery stem cells.
Use the basic engineering flow chart
Find your problem
Identify solution
Basic calculations
Prototype
Review
Does it work? If not start again from prototype
The methicillin-resistant form of the bacterium commonly known as staph was first identified in the 1970's in hospitals, but it has since spread across the world, showing up in day cares, schools and other public spaces. Today, 1.2 million MRSA infections occur in hospitals in the U.S. and invasive MRSA kills over 19,000 per year,However, In the past, penicillin was used to treat Staphylococcus aureus infections. Shortly after, S. aureus became resistant to penicillin. During the 1950s, derivatives of penicillin was discovered by pharmaceutical companies that could treat Staphylococcus aureus . The graph below depicts the Spread of Antibiotic-Resistant S. aureus Infections in the United States. Separate curves are shown for bacteria that caused infections in the hospital ("Hospital-Acquired") and in healthy people in the community ("Community-Acquired").
information found at https://www.biologycorner.com/worksheets/case_study_bacteria_resistance.html
Blood is not enter in PCT.
Blood filtered through filtration slit which is present in glomerulus
