The tip of the pyramid ends in a cuplike structure called the papilla.
Papilla projects into a calyx. Its surface has a sievelike appearance since it is where urine droplets pass through its small openings. Each opening represents a tubule known as the Bellini duct through which collecting tubules within the pyramid converge or meet. The muscle fibers lead from the calyx to the papilla. As the muscle fibers originating from calyx contract, urine flows through the Bellini ducts into the calyx. The urine flows through the renal pelvis and the ureter and it eventually drains down into the bladder.
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.
The answer is: " 32,768 " .
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Explanation:
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→ 2ⁿ = ? ; {that is: "2" , raised to the "n th" power, equals {<u>what value</u>} ?
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→ Note that "n" is the haploid number, which is:
"15" (value given within this very question).
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→ So we plug in "15" for "n" ; to obtain the "final value" —
which is the answer.
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→ As such: " 2¹⁵ = 32,768 " . (using scientific calculator online).
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→ The answer is: " 32,768 " .
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competition plays a very important role in ecology and evolution. The best competitors are the ones who survive and get to pass on their genes.
