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Greeley [361]
3 years ago
10

Please answer quickkkk

Biology
1 answer:
Natasha_Volkova [10]3 years ago
7 0
The answer is number 4.
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Which two cellular organelles in eukaryotes have both electron transport systems and chemiosmotic mechanisms?
aalyn [17]

Answer:

Mitochondria and the chloroplast

Explanation:

Electron transport refers to the transfer of of electrons from electron donors to electron acceptors via a reduction-oxidation reaction.  

In the mitochondria the process is called Oxidative phosphorylation whereas in the Chloroplast it is called Photo-phosphorylation since it utilizes light.

Chemiosmotic mechanisms allow the movement of ions across a semi-permeable membrane down their electrochemical gradient.

In both mitochondria and chloroplast,have these mechanisms for the production of ATP .

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3 years ago
An organelle that contains a cell’s dna
abruzzese [7]

Answer:

The nucleus contains a cell's DNA.

5 0
3 years ago
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Describe the steps used to filter a mixture of sand and water​
Ahat [919]

Answer:

Place a filter funnel on the top of a conical flask.

Roll the filter paper into a cone and place it on the flask.

Pour the mixture of sand and water into the conical flask with the filter funnel and paper.

Wait till all the sand is left over in the filter paper and all the water has been separated.

(You could also heat the sand in a warm oven to remove any water remaining)

8 0
2 years ago
Typically, humans cause cultural
34kurt

Explanation:

What I got to have

Eutrophication (from Greek eutrophos, "well-nourished") is the process by which an entire body of water, or parts of it, becomes progressively enriched with minerals and nutrients. It has also been defined as a "nutrient-induced increase in phytoplankton productivity". Water bodies with very low nutrient levels are termed oligotrophic and those with moderate nutrient levels are termed mesotrophic. Advanced eutrophication may also be referred to as dystrophic and hypertrophic conditions. Eutrophication in freshwater ecosystems is almost always caused by excess phosphorus.

I hope this helps

6 0
3 years ago
Why does increasing soil salinity have adverse effects on plant cells?
borishaifa [10]
Ezywhen salinity in soil increases the soil becomes hypertonic when compared to cell sap.the movement of particles from a lower concentrated solution to a higher concentrated solution is callede osmosis. in general conditions cell sap is at higher conc. than surrounding media. this allows water and minerals to enter the plant. but when soil is at higher conc. i.e., when its salinity increases the process becomes reversed can you imagine its consequenses?
3 0
3 years ago
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