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kicyunya [14]
3 years ago
14

Which of the following bacterial names gives information about its cellular morphology?

Biology
1 answer:
gregori [183]3 years ago
4 0

Answer:

Coccoid bacteria

Explanation:

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Why are marsupials only found in Australia?
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Answer:

B. Australia is isolated

Explanation:

They originated in South America and spread throughout the world, but due to competition on other continents, the other marsupials died out, while the ones on Australia lived.

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3 years ago
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Describe the Watson and Crick model of DNA structure. How did it fit the data provided by Chargaff and the X-ray diffraction pat
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DNA model given by Watson and Creek in the year of 1953 gave a very detailed study regarding the structure of B DNA which is valid till date and is essentially corroborating with Chargaff's data and Xray diffraction pattern.

<h3><u>Explanation:</u></h3>

The DNA is the most common nucleic acid found in the living organisms as a genetic material. As stated by Watson and Creek, this DNA contains a double helical structure with two sugar phosphate backbones and the nitrogen bases getting projected from it inwards. The backbones are formed of ribose sugar and phosphate and joined together with a phosphodiester bond. The ribose sugar is attached to phosphates at its 3' and 5' Carbon atoms. The nitrogen bases found in DNA are Adenine, Guanine, Thymine and Cytosine. The Adenine has two hydrogen bonds with thymine and guanine has 3 hydrogen bonds with cytosine.

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Chargaff's rule regarding the equal amount of adenine and thymine as well as guanine and cytosine is matching with this structure. All the other rules also do match with this DNA structure.

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Sperm, Egg (1 egg and 3 polar bodies), 4 different, haploid
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What effect do the Aspergillus fungi have on the economy?
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Place the following steps of the DNA extraction and PCR process in the correct order. Not all labels will be used.
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