Lesson Worksheet: Removing Waste Biology
In this worksheet, we will practice describing the processes by which waste products are removed from the human body.
Removing waste from the human body is a crucial part of the process of maintaining a constant internal environment. What scientific term is given to the maintenance of a constant internal environment?
- EPositive feedback
Which of the following correctly describes the correlation between the rate of respiration and carbon dioxide concentration?
- AThe more cells respire, the lower the concentration in the blood.
- BThe more cells respire, the higher the concentration in the blood.
- CThere is no correlation between the rate of respiration and the concentration in the blood.
What is the primary method for removing carbon dioxide from the human body?
- AExcreting it in urine
- BExcreting it in feces
- CExhaling it from the lungs
- DSecreting it from the skin
A buildup of carbon dioxide in the blood can lower the blood’s pH. Why is it important that carbon dioxide is removed from the body?
- AA decrease in pH can cause blockages in arteries.
- BA decrease in blood pH has no effect on the body.
- CA decrease in pH can change the structure of oxygen in the red blood cells.
- DA decrease in pH can affect enzyme activity.
Why must urea be removed from the body?
- AIf urea remains in the body, it can inhibit cell division.
- BIf urea is not removed, it can break down cell walls.
- CIf too much urea builds up, it can be toxic.
- DIf urea is not removed, it will be stored as fat.
What substance (or substances) is urea formed by the breakdown of?
- CRed blood cells
- EAmino acids
What is the primary method for removing urea from the human body?
- AExhaling it from the lungs
- BSecreting it from the skin
- CExcreting it in urine
- DExcreting it in feces
Which of the following is not a method of removing water from the body?
- AShedding skin
The structures that mainly function to decrease the body temperature when it exceeds the normal range are the .
- Afatty cells
- Berector muscles
- Csebaceous glands
- Dsweat glands
Melanocytes are responsible for the production of melanin, which is normally found .
- Aprotected in the fatty layer
- Bclose to the surface of the epidermis
- Cdeep in the dermis
- Din the inner layer of the epidermis