Digestion and getting rid of waste
Grade 7 Science Worksheet - Challenge Me
Circle the best answer.
Ari takes a bite of bread, and its starch is broken down into sugar. Which path does the sugar take into the body?
- Mouth, windpipe, lungs, then the blood
- Mouth, esophagus, stomach, small intestine, blood
- Mouth, esophagus, stomach, large intestine, blood
- Mouth, esophagus, stomach, liver, small intestine
A bit of Bo's apple peel can't be digested. Which path does it take through the body?
- Mouth, esophagus, stomach, then out through the kidneys
- Mouth, esophagus, stomach, pancreas, then out
- Mouth, esophagus, stomach, small and large intestines, out
- Mouth, esophagus, stomach, large intestine, small intestine, out
Esme's beans have protein, which starts breaking down in the stomach. Where is its breakdown finished and absorbed?
- In the esophagus, on the way down
- In the large intestine, with the water
- In the pancreas, after the beans pass into it
- In the small intestine, with juice from the pancreas
Jun makes a waste chart for three wastes. Which chart matches each waste with its exit?
- Carbon dioxide: lungs; urine: kidneys; food leftovers: large intestine
- Carbon dioxide: lungs; urine: large intestine; food leftovers: kidneys
- Carbon dioxide: stomach; urine: kidneys; food leftovers: liver
- Carbon dioxide: kidneys; urine: lungs; food leftovers: large intestine
Read this first
NIH NIDDK
fact amount blood filtered by both kidneys each day about 150 quarts filtered fluid that becomes urine each day about 1 to 2 quarts filtering units (nephrons) in each kidney about a million Milo reads a kidney card. The kidneys filter about 150 quarts a day, yet just 1 to 2 quarts become urine. What happens to the rest of the filtered fluid?
- It returns to the blood
- It is stored in the bladder for days
- It goes to the large intestine with food waste
- It is breathed out by the lungs
Noah compares the two amounts on the kidney card. How much of the filtered fluid becomes urine?
- No urine: it is made in the large intestine
- About half, as the kidneys keep half
- A small part, 1 to 2 of every 150 quarts
- Each of the 150 quarts, as filtering makes urine
Pia's kidney card says each kidney has about a million nephrons. What does each nephron do?
- It filters blood and returns what the body needs
- It takes in nutrients from food in the intestine
- It stores urine until the bladder is ready
- It removes carbon dioxide from the blood as a gas
Ren says the stomach absorbs most of the nutrients from soup. Agree or disagree?
- Disagree: most are absorbed in the small intestine
- Agree: the stomach finishes digestion and absorbs the food
- Agree: the soup soaks through the liver first
- Disagree: most are absorbed in the large intestine
Tala says a sandwich passes through the liver on its way to the intestines. Agree or disagree?
- Disagree: the liver sends bile in through ducts
- Disagree: it passes through the pancreas instead
- Agree: the liver is part of the food tube
- Agree: the stomach is too small to finish it
Zee says digestion is finished by the time food leaves the stomach. Agree or disagree?
- Disagree: the large intestine finishes it
- Agree: the stomach's acid finishes the job
- Disagree: the small intestine finishes it
- Disagree: the liver finishes it as food passes through
