Digestive Processes and Waste Elimination

Digestive Processes and Waste Elimination

Assessment

Interactive Video

Biology, Science

9th - 10th Grade

Hard

Created by

Emma Peterson

FREE Resource

Emily from MinuteEarth explains why our waste is brown or yellow, despite colorful diets. The body recycles red blood cells, reclaiming iron and converting the rest into bilirubin. Bilirubin cycles in the body until gut bacteria convert it to urobilinogen, which exits via urine or feces. The video concludes with a rhyme and a message supporting Tab for a Cause.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What colors do the things we eat and drink turn into after digestion?

Black and white

Green and purple

Brown and yellow

Red and blue

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to red blood cells after they become too stiff and inflexible?

They turn into white blood cells

They are engulfed by white blood cells

They are repaired by the body

They are expelled from the body

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What molecule is formed when red blood cells are broken down?

Chlorophyll

Bilirubin

Urobilinogen

Hemoglobin

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to bilirubin if left to its own devices in the body?

It forms an infinite loop

It turns into iron

It becomes a nutrient

It is expelled immediately

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What role do gut bacteria play in the digestion process?

They produce red blood cells

They break down bilirubin

They absorb iron

They create new blood cells

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to urobilinogen in the first route of waste elimination?

It is absorbed by the intestines

It is stored in the liver

It is turned into a brown molecule

It is processed by the kidneys

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the second route of waste elimination, what color does urobilinogen turn into?

Green

Red

Yellow

Dark brown

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