Gas Exchange
Which gas do your cells need to make energy?
A. Oxygen
B. Carbon dioxide
C. Helium
A. Oxygen
What is the smallest level of life?
A. Cell
B. Organ
C. Organism
A. Cell
In the yeast lab, what was the independent variable (IV), the thing we changed on purpose?
A. The amount of sugar
B. The size of the balloon
C. The color of the bottle
A. The amount of sugar
The heart is a…
A. Muscle
B. Bone
C. Gas
A. Muscle
Your heart ______ blood through your body.
pumps
Which gas does your body breathe out as waste?
A. Oxygen
B. Carbon dioxide
C. Nitrogen
B. Carbon dioxide
A group of the same kind of cells working together is called a…
A. Tissue
B. Organ system
C. Organism
A. Tissue
What did we change in the experiment?
A. The size of the bottle
B. The amount of sugar
C. The color of the balloon
B. The amount of sugar
How many chambers does the human heart have?
A. 2
B. 4
C. 6
B. 4
When you exercise, your pulse rate goes ______.
up (increases)
What does a fish use for gas exchange?
A. Lungs
B. Gills
C. Stomata
B. Gills
Your lungs are an example of a(n)…
A. Cell
B. Organ
C. Organism
B. Organ
What did we measure?
A. The room temperature
B. Balloon size and foam height
C. How loud the yeast was
B. Balloon size and foam height
What happens to your heart rate when you exercise?
A. It goes up
B. It goes down
C. It stops
A. It goes up
Plants take in gases through tiny openings called ______.
stomata
Where in the lungs does gas exchange happen?
A. Alveoli (tiny air sacs)
B. The stomach
C. The skull
A. Alveoli (tiny air sacs)
The respiratory system is…
A. One giant cell
B. Organs that work together to help you breathe
C. Only your brain
B. Organs that work together to help you breathe
The bottle with 0 packets of sugar was the…
A. Control
B. Hypothesis
C. Conclusion
A. Control
Blood vessels that carry blood away from the heart are called…
A. Veins
B. Arteries
C. Alveoli
B. Arteries
FREEBIE
FREEBIE
What makes your body breathe faster when you exercise?
A. Your stomach notices you are hungry
B. Your brain notices high carbon dioxide in your blood
C. Your eyes see the finish line
B. Your brain notices high carbon dioxide in your blood
Which list goes from smallest to largest?
A. Cell, tissue, organ, organ system, organism
B. Organ, cell, tissue, organism, organ system
C. Organism, organ system, organ, tissue, cell
A. Cell, tissue, organ, organ system, organism
Which result best supports “more sugar makes more gas”?
A. The 2-packet balloon was bigger than the 0-packet balloon
B. All the balloons stayed the same size
C. The 0-packet balloon was the biggest
A. The 2-packet balloon was bigger than the 0-packet balloon
Why does your heart beat faster when you exercise?
A. Your muscles need more oxygen, so blood has to move faster
B. Your heart gets bored
C. Your lungs get smaller
A. Your muscles need more oxygen, so blood has to move faster
Cells use oxygen to make energy in a process called cellular ______.
respiration