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NikAS [45]
3 years ago
11

Which group does not contain animals that are arthropods?

Biology
1 answer:
vaieri [72.5K]3 years ago
6 0

Answer:

arachnids _c

Explanation:

that is the right answer I believe.

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Nitrogen fixing bacteria called rhizobia
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3 years ago
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To which substance does ferredoxin transfer an electron?
Sonbull [250]

The right answer is NADP+.

Ferredoxin is an iron-sulfur protein that effects electron transfer in a large number of redox reactions in cell metabolism through Fe-S clusters whose iron cations oscillate between +2 (ferrous) oxidation states. and +3 (ferric). The first protein of this type was isolated in 1962 from the anaerobic bacterium Clostridium pasteurianum. A chloroplast-specific ferredoxin is involved in the cyclic and noncyclic photophosphorylation reactions of photosynthesis. In non-cyclic photophosphorylation, ferredoxin is the ultimate electron acceptor and reduces NADP + under the action of ferredoxin-NADP + reductase (EC 1.18.1.2) with FAD and a flavin group as cofactors:

2 ferredoxin- [Fe (2+) Fe (3+) S2 (-2)] + NADP (+) + H (+) ==> 2 ferredoxin- [Fe3 (+2) S2 (-2)] + NADPH .

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3 years ago
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The brilliant research scientist, Professor "Iron-Mike" Scrawll is studying a new pore-forming toxin from the pathogenic bacteri
Dafna11 [192]

Answer:

The correct option is C - Professor Scrawll applied 100 nM BurD to the cells for 24 hours, while Dr. Bogey applied 1 nM BurD to the cells for 12 hours.

Explanation:

The correct option is C - Professor Scrawll applied 100 nM BurD to the cells for 24 hours, while Dr. Bogey applied 1 nM BurD to the cells for 12 hours.

As the exotoxin, BurD is very stable and lyse the ankle cells very quickly, more concentration and more time of action should only lyse the cells. Perhaps Dr.Bogey's ankle cells were not lysed because the concentration she used was only 1nM compared to the 100nM concentration used by Dr. Scrawll, and the time period of incubation was only 12 hours compared to the 24 hours used by Dr. Scrawll.

Considering the other explanations given in the remaining options, the concentration and time of incubation used by Dr. Bogey are more than that used by Dr. Scrawll which should only have possibly lysed the cells. Moreover, contamination with bleach also should have only lysed the cells.

5 0
3 years ago
What is found not only in bones and teeth but also in all body cells as part of a major buffer system, and is found in almost al
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<span>The answer to this question is SULFATE. Sulfates are used often in our everyday life. Sulfates are often an ingredient in soaps, shampoos, toothpastes, laundry detergents, and even household cleaners. Other uses of sulfates are it is used as therapeutic baths and it is used to produce and make plasters. </span>

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3 years ago
Describe the precautions to be taken when fluoroscopy or an x-ray is taken during surgery.
LekaFEV [45]

Answer: The advancement in the science and technology also comes with some of the risks which needs to be maintained at the time of surgery.

Explanation:

The fluoroscopy involves the use of X-rays, a form of ionizing radiation which increases the chances of radiation induced cancer.

Though this risk depends on the risk length of procedure and intensity of rays.

The higher intensity of the rays can also cause burns on the skin which can be equivalent to the sun burns.

The brightness of the screen is also introduced so that the patient is exposed to less intensity of rays.

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