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Varvara68 [4.7K]
3 years ago
15

Which of the substances observed are elements?

Biology
1 answer:
weeeeeb [17]3 years ago
3 0

Answer:

A. are all elements the rest are combinations of elements

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A red blood cell with an osmolarity of 300 mOsM (non-penetrating solutes) swells but does not lyse when placed in a 300 mOsM sol
Mashcka [7]

Answer:

See below for answer

Explanation:

<u>A. 200 mOsM NaCl</u>

This solution is hypotonic to the red blood cell (RBC) with penetrating solute. The RBCs will swell up and burst because the water will move into the cells.

<u>B. 400 mOsM urea</u>

This solution is hypertonic to the RBCs with non-penetrating solutes. Water will leave the cells via osmosis and the cells will shrink and appear shriveled.

<u>C. 100 mOsM urea plus 200 mOsM NaCl</u>

This time both penetrating and non-penetrating solute is present. The solution is isotonic to the RBCs and although there will be movement of water between the cells and the solution, there will be no overall change in the concentration of water for each and no change in appearance of the cells.

<u>D. 300 mOsM urea</u>

The RBCs will not lyse nor shrivel as again the solution is isotonic to the RBCs.

8 0
3 years ago
Where cerebrospinal fluid leaves brain to be recycled?
vovangra [49]
<span>The fluid flows through the interventricular foramen into the third ventricle, is augmented by fluid formed by the choroid plexus of this ventricle, and passes through the cerebral aqueduct to the fourth ventricle, which also possesses a choroid plexus. The CSF from all theses sources , as well as any formed in the central canal of the spinal cord, escapes from the fourth ventricle into the subarachnoid space through the median aperture and lateral aperture.</span>
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What would happen to an organism if mitosis did not occur? Check all that apply.
vitfil [10]

The correct options are:

The organism would not grow.

If an organism were cut or burned, the damaged area would not heal.

The organism would not produce new cells.

The mitosis is essential for the division of the cells. The division of the cells allow the organism to grow and heal the damaged cells. The division of the cells replace the old cells and multiply the number of the cells in an organism. hence, in any condition, the organism would be affected and in the absence of the mitosis, the organism cannot heal and cannot grow, due to non-production of new cells.

3 0
3 years ago
Read 2 more answers
Biology b adaptive
Maslowich

The substance namely water is moved through hydrologic cycle. The correct option is A.

<h3>What is hydrologic cycle?</h3>

The hydrologic cycle is the continual movement of water in the Earth-Atmosphere system.

The water cycle is defined as the movement of water from the Earth to the atmosphere and back again.

As per the question, the substance namely water is moved through hydrologic cycle.

Thus, the correct option is A.

For more details regarding hydrologic cycle, visit:

brainly.com/question/13554728

#SPJ1

8 0
2 years ago
What are some erosive forces?​
quester [9]

Answer:

Erosive Forces:

•light particles float

• some particles dissolve into water

• abrasive forces wear down rocks

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3 years ago
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