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alina1380 [7]
2 years ago
6

OMG!!!! i need help asap please

Biology
2 answers:
Wewaii [24]2 years ago
7 0
A. and B. Hope this helped
Lemur [1.5K]2 years ago
5 0
A. and B., hope this was soon enough
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In the lumen of the proximal tubule, Na concentration is ________ the Na concentration inside the cells of the tubule wall.
nydimaria [60]

Answer:

The correct answer is - higher than

Explanation:

In the lumen of the proximal tubule of the kidney, most of the solutes are absorbed in the form of sodium. There is a gradient of sodium ions which allows the absorption of the solutes from the lumen into the cell.

It is due to the solute or  Na concentration is higher in the lumen than Na concentration inside the cells of the tubule wall. So movement of the solutes is due to the concentration gradient.

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2 years ago
Why have fossil's of some extinct organisms have been found and others haven't?
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Fossils only form if certain qualifications are met, and some organisms cannot meet them, so they just cease to exist, not a single sign of them. This could happen if they were organisms that decayed completely. Fossilization can include freezing, drying, and encasement, usually in tar or resin.
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Explanation:

I feel like it's trophic level

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2 years ago
A membrane-bound organelle whose primary function is protein synthesis is the
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A membrane bounded organelle whose main function is to undergo protein synthesis would be the ribosomes. These can be embedded in the endoplasmic reticulum or be freely floating in the cytoplasmic region of the cell.
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Measurements of the amount of DNA per nucleus were taken on a large number of cells from a growing fungus. The measured DNA leve
erica [24]

Answer:

Option C

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Option C is correct

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3 years ago
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