| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.73 |
| Score | 0% | 55% |
The heart __________ blood.
oxygenates |
|
creates |
|
filters |
|
deoxygenates |
To provide oxygen to the body, blood flows through the heart in a path formed by the right atrium → right ventricle → lungs → left atrium → left ventricle → body. When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.
During digestion, after proteins are broken down where does the undigested food go next?
small intestine |
|
large intestine |
|
esophagus |
|
stomach |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Cellular fermentation takes place:
aerobically |
|
in the presence of oxygen |
|
anaerobically |
|
in plant cells |
If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.
In the foood chain, producers serve as a food source for other organisms. Typical producers are plants that can make their own food through photosynthesis and certain bacteria that are capable of converting inorganic substances into food through:
decomposition |
|
photosynthesis |
|
chemosynthesis |
|
autotrophs |
Producers (autotrophs) serve as a food source for other organisms. Typical producers are plants that can make their own food through photosynthesis and certain bacteria that are capable of converting inorganic substances into food through chemosynthesis
Which of these represents the path of blood flow through the heart?
right atrium → left ventricle → lungs → left atrium → right ventricle |
|
left atrium → left ventricle → lungs → right atrium → right ventricle |
|
left atrium → right ventricle → lungs → left atrium → right ventricle |
|
right atrium → right ventricle → lungs → left atrium → left ventricle |
To provide oxygen to the body, blood flows through the heart in a path formed by the right atrium → right ventricle → lungs → left atrium → left ventricle → body. When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.