Which discovery supported the endosymbiotic theory?

1 answer:

8 0

Mitochrondria of the eukaryotic cells.
As many researchers hypothesize that the old single-celled organism or the origin of the complex-celled organisms came from the endosymbiosis of the mitochrondrion organism and the prokaryotic cell. It has been said that mitochondria was an independent organism which then to have been evovled itself after planting itself inside a prokaryotic cell which aided cellular respiration and production of ATP (Adenosine Triphosphate). This then aided the prokaryotic cell to be more sophisticated and caused another change from having without a true nucleus to a eukaryotic cell with a nucleus and embedded DNA.

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What role do surface properties play in determining the lifespan of a flu virus?

bija089 [108]

Answer:

Surface properties have less to do with virus lifespan than does the type of virus. Viruses tend to remain viable for longer on non-porous materials than on porous ones. Viruses tend to remain viable longer on surfaces with low moisture content.

Explanation:

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3 years ago

What farming method is used in dry or desert areas?

qwelly [4]

Answer: Option B

Explanation:

Desert farming is the practice of developing agriculture in deserts. Agriculture can be defined as the act of irrigation, water supply and farming.

The desert farming is different from the other types of farming and it has been practiced by the person living there.

These practices are to be used very precisely as the water is not available in a plenty amount. Taking into consideration drip irrigation is used in the desert and dry areas.

Drip irrigation can be defined as the modern method by which the micro-irrigation technique in which the water and the nutrients are saved and it allows the water to drip slowly into the roots of plants.

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2 years ago

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Which ranks the terms in order of increasing size and the number of space objects contained within?

Snowcat [4.5K]

<h3>Answer;</h3>

A) Size: universe -> galaxy -> solar system

Number of objects: universe ->galaxy -> solar system

<h3>Explanation;</h3>

The relative size and relationship between the solar system, galaxy and universe is such that; universe is the largest, followed by the galaxy and solar system the smallest.
Similarly in terms of the number of objects, objects in the universe are more compared to those of the galaxy and the solar system.
In a nut shell, universe refers to everything that exists, galaxies are giant structures that are made up of billion of stars. The universe is made up of billions of galaxies. A solar system is a region of space where the gravitational force of a star influences all the other objects.

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3 years ago

1. Which of the following accurately describes the relationship between photosynthesis and cellular

Maslowich

C. The reactants of photosynthesis are the products of cellular respiration and vice versa.

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The pertussis toxin was found to interfere with the ligand-binding site in G-protein coupled receptors. At which point in the ce

rusak2 [61]

Answer: c. signal amplification

Explanation:

The uncoupling of the G-protein and inhibiting of the signal amplification are the two affects of the pertusis toxin. It is released by the bacteria called Bordetella pertusis. The G-proteins are affected by the action of pertusis toxin. The production to the excess level of cAMP due to the conversion of ATP into cAMP the ribosylation of the ADP molecules occurs due to pertusis toxin. This leads to the damage of G-proteins.

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