Explain how the work done by rosalind franklin and maurice wilkins helped inform watson and cricks model of the structure of dna

1 answer:

3 0

Rosalind Franklin and Maurice Wilkins conducted experiments using X-ray crystallography to study the structure of the DNA. Their experiments produced the famous photo 51, the first evidence on the structure of the DNA. Their work showed that DNA is double-stranded and forming a helix. They also showed that the nitrogenous bases are on the inside of the strands and that the phosphates are on the outside. Watson and Crick used these observations to develop their model on the molecular structure of the DNA.

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Which of the following correctly describes the relationship between hibiscus flowers and bumblebees that eat hibiscus nectar and

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Answer:

C. predation: bumblebees feed on hibiscus flowers' nectar which causes the hibiscus flowers to die

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What two compounds are the waste products of cellular respiration? * H2O and CO2 H2O and C6H12O6 CO2 and C6H12O6 ATP and CO2

rusak2 [61]

Answer:

The two compounds that correspond to waste products of cellular respiration are H₂O and CO₂.

Explanation:

The cellular metabolic waste products, specifically from cellular respiration are water (H₂O) and carbon dioxide (CO₂), from the oxidation of glucose into energy.

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Obtaining H₂O and CO₂ from glucose can be summarized with the schematic reaction:

C₆H₁₂O₆ + 6O₂ → 6H₂O + 6CO₂

This summary indicates that a glucose molecule, when oxidized, produces as waste 6 molecules of water and 6 molecules of carbon dioxide. To reach this process all the reactions of the oxidative phosphorylation occur and 24 molecules of ATP are obtained for each molecule of glucose.

For the other options it is important to mention that:

C₆H₁₂O₆ is the substrate from which cellular respiration takes place.
ATP is the final product of cellular respiration, translated into energy to be used by the cell.

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Read 2 more answers

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3. fly ash of soot in air - coal-burning power plant. Coal burning plants release ash produced in small dark flecks.

4. soil contamination of water resources - DDT spraying in agriculture. DDT washes off agricultural land into water resources.

5. sewage contamination of water resources -population density. Urban areas produce a low of sewage, which is usually treated before being disposed of in rivers or the sea.

6. excess plant growth in the lakes or rivers - phosphate detergents. In many rivers, algal growth is limited by phosphate. Once excess phosphate is released to rivers, exponential algal growth can occur.

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