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Serga [27]
3 years ago
7

The endosymbiosis theory states the orgin of the eukaryotic cells began when

Biology
1 answer:
skelet666 [1.2K]3 years ago
7 0

Answer:

The correct answer is B. Prokaryotic cell consumed a smaller cell.

Explanation:

Endosymbiosis theory says that the origin of eukaryotic cell happens when a bigger prokaryotic cell consumer a smaller prokaryotic cell but the bigger cell did not consume the smaller cell rather these two cells remain in symbiotic association with each and later evolved as a eukaryotic cell.

The evidence of this theory can be seen in eukaryotic cells in the form of mitochondria and chloroplast in animal and plant cells. These two organelles are very closely related to today's prokaryotic cells.

Both the organelles have their own circular genome enclosed in double membranous structure and 70s ribosomes which resembles the bacterial cell. Therefore, the correct answer is B. Prokaryotic cell consumed a smaller cell.

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Part D - The effect of gramicidin on oxidative phosphorylation When the protein gramicidin is integrated into a membrane, an H c
Andrews [41]

Answer:

The correct answer would be -

Remains the same: proton pumping rate, electron transport rate, rate of oxygen uptake.

Decreases or goes to zero: rate of ATP synthesis, size of protein gradient

Explanation:

An H+ channel forms and the membrane becomes very permeable to protons if the protein gramicidin is integrated into a membrane. If gramicidin is added to an actively respiring muscle cell, it will affect the in the following manner:

Remains the same:

proton pumping rate, electron transport rate, rate of oxygen uptake.

Decreases:

rate of ATP synthesis, size of protein gradient

None of these will show an increase due to the addition of gramicidin tlo actively respiring muscle cells.

4 0
3 years ago
In humans, which tissues are the main storage locations for glycogen? select all.
Paha777 [63]

Answer:

Cuando el cuerpo no necesita usar la glucosa para generar energía, la almacena en el hígado y los músculos. Esta forma almacenada de glucosa se compone de varias moléculas conectadas entre sí y se llama “glucógeno”.

Explanation:

3 0
2 years ago
Which statement about infiltration is TRUE? Group of answer choices groundwater is an unsafe (dangerous) source of water not mea
weeeeeb [17]

Answer: Groundwater can remain in subsurface storage for long periods of time.

Explanation:

The ground water is the water reservoir that gets accumulated beneath the earth crust due to the accumulation of water that seeps into the soil and rock due to the absorption by water bodies river, lakes, ponds, oceans, and rain or any kind of precipitation. The groundwater remains as a subsurface storage of water until the site of groundwater is searched and water is extracted from it for household, agricultural or industrial purposes.

8 0
3 years ago
Which human activities can change the conditions of ecosystem
Artyom0805 [142]

Answer:

Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.

Various Human Activities That Affect an Ecosystem

Agriculture.

Deforestation.

Overpopulation & Overconsumption.

Plastic Production.

Emission of Carbon Dioxide and Other Greenhouse Gases.

Destruction of the Reefs.

Production of Black Carbon.

Draining Streams/Rivers and Destruction of Critical Freshwater Aquifer Recharge Areas (Water Pollution)

Explanation:

Hope this helps!

6 0
3 years ago
Waste solvents are flammable but not toxic true or false
evablogger [386]
The statement above is FALSE.
Waste solvents are both flammable and toxic.
Waste solvents refers to the liquid waste obtained from the chemical processes that are performed in a laboratory. Such waste are labelled as hazardous, which means, they are toxic and harmful.
6 0
3 years ago
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