Question

Chapter 21 assignment

Visualizing the Data: The Composition of Human Urine

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Review Human urine is made up of multiple components. Explore the composition of human urine in the interactive figure. Then answer the questions.

Part A What percentage of urine is made up of chloride ions? Click on the top portion of the droplet. You may need to scroll down to see the percentage of chloride ions. Enter your answer as a whole number. % SubmitRequest Answer Part B Kidney failure may be detected by abnormally high levels of creatine in the urine. What is the normal percentage of creatine found in urine? Kidney failure may be detected by abnormally high levels of creatine in the urine. What is the normal percentage of creatine found in urine? 0.10% 0.15% 0.25% 0.5% SubmitRequest Answer Part C What percentage of urine is made up of substances other than water and urea? Enter your answer to one decimal place. % SubmitRequest Answer Part D The hormone vasopressin is released from the pituitary gland when the blood is hypertonic (when the concentration of dissolved solutes in the blood is higher than that in cells). Vasopressin acts on nephrons in the kidneys to help restore proper fluid balance by drawing water back into the blood. What will the water content of human urine be when vasopressin is acting on the kidneys? What will the water content of human urine be when vasopressin is acting on the kidneys? The person’s urine will contain less than 94% water. The person’s urine will contain exactly 94% water. The person’s urine will contain more than 94% water. SubmitRequest Answer Part E Suppose you are planning to go to the movies with your friends. For you, the best thing about the movies is getting a large tub of salty popcorn. However, every time you do this, you tend to drink lots of water, too. What components in your urine would be most affected by your consumption habits at the movie theater? Select all that apply. Select all that apply. water sulphate ions potassium ions uric acid chloride ions sodium ions

Answer 1

AnsA) 1%

Explanation: Human urine composition:

95%water+2%urea+0.05% ammonia+0.18%sulphate ion+0.12%phosphate ion+0.6% chloride ion+0.01%Magnesium ion+0.015%calcium ion+0.6%potassium ion+0.1%sodium ion+0.1%creatine +0.03%uric acid.

Chloride ion constitute about 0.6% to the total urine composition as we have to answer in whole number so nearby whole number is 1%

So here answer is 1%.

AnsB)0.10%

Explaination: Normally creatine constitute about 0.10 % part of total urine composition.

Ans-C)3.0%

Explaination:

Water constitute about 95% of urine and urea consitute about2% of urine so remaining substances will constitute about 3% of urine.

Urine=95%water+2%urea+3%other substances than water and urea

AnsD)The person's urine will contain less than 94% water.

Explaination: Antidiuretic hormone or vasopressin acts on Nephrons in kidney and increases reabsorption of water from filterate so less amount of water is loss through urine hence,Vasopresin decreases the water composition in urine from normal level ie,less than94% water in urine balance osmolarity of blood.

AnsE)Water,Sodium ion , chloride ion