Biology

EXPERT ANSWER 5Answer: Gram’s staining is the test used to differentiate between gram positive and gram negative bacteria. Process of gram’s staining: 1.prepare bacterial smear on the clean glass slide 2. pass the slide through the flame for 2-3 times this process is called heat fixing 3. Apply crystal voilet (Primary stain) on smear for …

5) What is the process of gram staining? Please provide me details on what the primary stain is, mordant, decolorizer, counterstain, etc. Please explain what happens to the bacterial cell during each staining process. Please explain in detail- what a primary stain is, what a mordant does, what a decolorizer does, and what counterstain does. 6) Compare and contrast a gram positive organism vs. gram negative organisms. Please explain why gram positive cells result in a purple color after the gram staining process verses gram negative cells resulting in a pink coloration. Read More »

EXPERT ANSWER 12. Nitrogenous bases are organic bases that are heterocyclic in nature and contain nitrogen. There are two types of nitrogenous bases, purines and pyrimidines. Adenine and Guanine are purines and cytosine, uracil and thymine are pyrimidines. Out of these nitrogenous bases, adenine, guanine, cytosine and thymine are found in the DNA and the …

12. How can A distinguish T from C? 13. Which DNA double helix do you think would be harder to separate into two strands: DNA composed predominantly of AT base pairs, or of GC base pairs? Why? 14. What is a mutation? -In 15. The DNA double helix looks like a twisted ladder. What makes up each rung of the ladder? What holds the rungs together at the sides? -Ea 16. Is there mostly empty space between the atoms in a DNA double helix?! 17. One base pair is not in position to form normal Watson-Crick hydrogen bonds. Can you find it? (Note: Clicking on any base in D. Ends, Antiparallelism reports its letter and sequence number at the bottom of the browser window in the status line, following the word “Group”. Use this feature to obtain the letters and sequence numbers of the abnormal base pair, once you find it.) -Instructions were to not answer this question. 18. How do proteins recognize specific sequences of DNA? -Proteins recognize specific sequences of DNA by Question Set C 19. Which bases are purines? Pyrimidines? Read More »

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1. In 3 test tubes, put 5 pcs of 3cm cylinders of red beets. 2. Add 10 ml of distilled water to test tube D, 10ml of 50% chloroform to tube E, and 10ml of 50% acetone to tube F 2. Seal the tubes with corks to avoid escaping fumes. 3. After 30 min, remove …

1. In 3 test tubes, put 5 pcs of 3cm cylinders of red beets. Read More »

Draw the precipitin arcs form in the immuno-double-diffusion set up below being known that antigen 1 and 2 are totally different, antibody 1 and 2 bind specifically to antigen 1 and 2, respectively. Clearly label the arc with the correspondent pair of antibody-antigen. EXPERT ANSWER Ans: For explaining the picture, let me give a quick …

Draw the precipitin arcs form in the immuno-double-diffusion set up below being known that antigen 1 and 2 are totally different, antibody 1 and 2 bind specifically to antigen 1 and 2, respectively. Clearly label the arc with the correspondent pair of antibody-antigen. Read More »

If in a radial immunodiffusion test, there are three precipitin rings form around a well of unknown antigen. Explain this observation. EXPERT ANSWER

A diploid species has 3 pairs of chromosomes in the somatic cells. In males, the first pair is large submetacentric; the second is medium acrocentric, and the third is small telocentric. In females, the first two pairs are like those of the males while the third is large metacentric with satellite. Illustrate the karyograms of the following:1. …

A diploid species has 3 pairs of chromosomes in the somatic cells. In males, the first pair is large submetacentric; the second is medium acrocentric, and the third is small telocentric. In females, the first two pairs are like those of the males while the third is large metacentric with satellite. Illustrate the karyograms of the following: 1. A triploid cell in females 2. A tetrasomic cell in males 3. A tetraploid cell in females Read More »

Relate the shape of frog’s red blood cells and frog’s egg cell with their respective function. EXPERT ANSWER Ans= Generally the shpe of RBC of frog is elliptical in shape and contain nucleus so also called nuclted RBC. Frog is amphibians organism can respiration through skin and lungs so metabolism is generally slow. Function of …

Relate the shape of frog’s red blood cells and frog’s egg cell with their respective function. Read More »

EXPERT ANSWER The five greatest scientific discoveries and inventions ever 1 – DNA. 2 – The Internet. 3 – Antibiotics. 4 – Medical imaging. … 5 – Artificial Intelligence For history up till now, I’m going with germ theory. there is so much involving health care, sanitation, agriculture, vaccines, and antibiotics that arose from our …

In Essay format: What was the most important scientific breakthrough of the past 300 years? Explain the science behind it and how we still feel its effects today. Note – Minimum word requirement is 200 words Requirements • Must be typed handwritten answers will be rejected and result in an immediate decline of your application • Between 200 – 500 words • Must be free of plagiarism • Proper grammar and no spelling mistakes • Failing to meet our quality standards will result in rejected applications At least one example of correct use of all of the following • Commas • Colons • Semicolons • Exclamations • Quote Marks • Apostrophes • Parentheses • Dashes • Hyphens Citation in APA format (at least one resource) Read More »

a. Make a list of business activities in the mobile app to track the immunization status of a childscenario.b. Identify the entities, processes, data flows, and data stores in the scenario (a).c. Create a context-level diagram for any one of the processes, such as the patient registration system or the immunization schedule generation.d. Is it possible to explode this context-level diagram? Justify your answer. …

a. Make a list of business activities in the mobile app to track the immunization status of a childscenario.
b. Identify the entities, processes, data flows, and data stores in the scenario (a).
c. Create a context-level diagram for any one of the processes, such as the patient registration system or the immunization schedule generation.
d. Is it possible to explode this context-level diagram? Justify your answer. If so create diagram 0 for plan generation Read More »