Give Reasonswhy addation of
acid
to a DNA solution causes a change
in its absorbance.​

Answers

Answer 1
Answer:

Answer:

See the answer below

Explanation:

The addition of acid to a DNA causes a change in its absorbance because acids tend to destroy the covalent bonds that hold the base pairs in DNA together.

In other words, acids, especially at high concentrations, denatures DNA. Denatured DNAs exhibit hyperchromic reaction, that is, they show increased absorbance as a result of less interaction between the bases.


Related Questions

The blueprint of genetic code is known as
cientists classify clams as consumers. Which observation about clams provides the strongest evidence for this classification? A. Young clams are able to move from place to place. B. Clams gain energy and nutrients by filtering particles from the water. C. Clams use calcium compounds to make a hard shell. D. Clams live on the ocean floor, and sometimes survive without sunlight.
Protein phosphorylation is commonly involved with all of the following excepta. activation of receptor tyrosine kinases.b. activation of protein kinase molecules.c. activation of G protein-coupled receptors.d. regulation of transcription by signaling molecules.
PLZ HELP ME1. The positively charged particle in an atom is thea. neutron. c. proton.b. ion. d. electron.2. Two or more different atoms are combined indefinite proportions in anya. symbol. c. element.b. isotope. d. compound.3. A covalent bond is formed by thea. transfer of electrons. c. gaining of electrons.b. sharing of electrons. d. losing of electrons.4. When you shake sugar and sand together in a testtube, you cause them to form aa. compound. c. solution.b. mixture. d. suspension.5. A compound that produces hydrogen ions insolution is a(an)a. salt. c. base.b. acid. d. polymer.6. In polymerization, complex molecules are formedby the joining together ofa. macromolecules. c. polymers.b. carbohydrates. d. monomers.8. Proteins are polymers formed froma. lipids.b. carbohydrates.c. amino acids.d. nucleic acids.9. An enzyme speeds up a reaction bya. lowering the activation energy.b. raising the activation energy.c. releasing energy.d. absorbing energy.10. In a chemical reaction, a reactant binds to anenzyme at a region known as thea. catalyst.b. product.c. substrate.d. active site.
State 10 characteristics of class Mammalia​

In general, embolism occur: a. in the vessel elements and tracheids after turgor loss point through air-seeding across pit membranes b. in vessel elements only, after turgor loss point through air-seeding across pit membranes c. in the vessel elements and tracheids after turgor loss point through air-seeding across plasmodesmata d. in vessel elements only, after turgor loss point through air-seeding across plasmodesmata

Answers

Answer:

b. in vessel elements only, after turgor loss point through air-seeding across pit membranes

Explanation:

As in humans, embolism can happen in plants. In the case of plants, embolism occurs only in the elements of the vessel, after the point of loss of the turgor through the propagation of air through the membranes of the pits, in other words, the embolism occurs when there is air filling the empty spaces of the xylem (element of vase), creating air bubbles.

These air bubbles block the xylem's work in transporting water from the root to the other parts of the plants, that is, it reduces the plant's ability to absorb water from the soil, thus preventing the plant from carrying out not only photosynthesis, but numerous metabolic processes essential for your body to survive.

Use the template of a replication fork to draw arrows that represent both continuous and discontinuous DNA synthesis. Draw one long arrow to show continuous DNA synthesis and three arrows to show discontinuous DNA synthesis. The arrows should point in the direction of nucleotide addition, and the three arrows showing discontinuous synthesis should be numbered 1, 2, and 3, in the order of fragment synthesis.

Answers

Answer: seen below

Explanation:

Deoxyribonucleic acid (DNA) synthesis is the biological process by which DNA molecule is created. In the cell, each of the two strands of the DNA molecule acts as a template for the synthesis of a complementary strand. This strands are separated during replication (DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule). DNA polymerase synthesizes the new strands by adding nucleotides that complement each (template) strand.

Deoxyribonucleic acid (DNA) synthesis is continuous because extension of a single ribonucleic acid (RNA) primer occurs without interruption into the replication fork as it continues to open to the right as seen on the diagram below. On the upper lagging strand which is the discontinuous synthesis, here synthesis is discontinuous, since new RNA primers must be added as opening of the replication fork continues to expose new template.

Which two ions are most affected by aldosterone?a. sodium and potassium
b. chloride and bicarbonate
c. calcium and phosphate
d. sodium and phosphate

Answers

Answer:

Sodium and potassium.

Explanation:

Aldosterone hormone is produced by the adrenal cortex (zona glomerulosa ) cells of the kidney. This is the main mineralocorticoid and the steroidal hormone.

Aldosterone is mainly involved in the regulation of sodium and potassium ions. The sodium ions are reabsorbed and potassium ions is secreted by the influence of aldosterone hormone.

Thus, the correct answer is option (a).

Which is the correct chemical equation for photosynthesis? 6CO2 + 6H2O ® C6H12O6 + 6O2 C6H12O6 + 6O2 ® 6CO2 + 6H2O 3CO2 + 3H2O + 3O2® C6H12O6 6O2 + 6H2O ® C6H12O6 + 6CO2

Answers

The eqation which reporesent Photosynthesis is6CO2 + 6H2O ® C6H12O6 + 6O2

Photosynthesis is the process by which green plants manufacture their food(in form of sugar) using carbon dioxide and water in the presence of sunlight. This is possible because of the presence of  chlorophyll which creates a medium to absorb the sun's energy. The Light energy formed then converts water and carbon dioxide into oxygen and  sugars.

The chemical equation to represent the process is as follows

6CO2 + 6H2O ------> C6H12O6 + 6O2.

                      sunlight

         

Here,  six molecules of  carbon dioxide and six molecules of water reacts in the presence of  light energy captured by chlorophyll from the sun to  form  sugar  and six molecules of oxygen.

See related answers here:brainly.com/question/18768388

Answer:

[See Below]

Explanation:

Here's the equations for photosynthesis.

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Which of the following chemical food preservatives is used in the wine industry but may cause asthmatic reactions in some individuals?nitrites
sulfites
propionic acid
benzoic acid

Answers

Answer:

Sulfites  are thechemical food preservatives which used in the wine industry but may cause asthmatic reactions in some individuals .

Explanation:

A chemical food preservative is a chemical species which are added to a product such as the beverages , food , drugs , paints , wood etc , to prevent  the process of degradation by microbes .

Sulfite is also an example of chemical food preservatives , sulfites helps the food from turning brown , in the presence of air .

Apart from helping the food from degrading , it too have same life - threatening symptoms for some people suffering from asthma .

Symptoms are - breathing difficulty , stomach cramps , tightness in the chest area , diarrhea .

Sulfites are used as a food preservatives in , wine , dried fruits , frozen potato , certain jams .

What would happen to the pH of the blood if excessive amounts of acetoacetic acid built up, as in a case of untreated diabetes.

Answers

Answer and explanation:

If excessive amounts of acetoacetic acid were to build up in the body, the pH of the blood would decrease, because the blood would become more acidic.

Acetoacetic acid is produced because of lipolysis (fat degradation) or because of the breakdown of amino acids. This is a normal biochemical process, but it can lead to serious issues when the levels of acetoacetic acid rise more than they should.

Patients with Diabetes Mellitus have a deficiency in their insulin production. Insulin is the only hormone that can make glucose enter the cells, which is important because glucose (sugar) is processed inside the cells to produce ATP (a molecule high in energy).

Patients with Diabetes can't get the glucose inside their cells, so the blood sugar levels rise in the blood (hyperglycemia). Since the body still needs ATP to function properly, energy requirements are being met via the degradation of fat and amino acids - which generates acetoacetic acid. If this continues, the pH drops and Diabetic Ketoacidosis occurs. This condition is life-threatening.