| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.44 |
| Score | 0% | 69% |
A __________ is the smallest multi-atom particle of an element or compound that can exist and still retain the characteristics of the element or compound.
ion |
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molecule |
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neutron |
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isotope |
A molecule is the smallest multi-atom particle of an element or compound that can exist and still retain the characteristics of the element or compound. The molecules of elements consist of two or more similar atoms, the molecules of compounds consist of two or more different atoms.
In the heart, blood flows from the right __________ to the lungs then back to the heart via the left __________.
atrium, atrium |
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ventricle, ventricle |
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ventricle, atrium |
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atrium, ventricle |
The two largest veins in the body, the venae cavae, pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.
In the food chain, omnivores may be which of the following?
secondary consumers or scavengers |
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primary or tertiary consumers |
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primary or secondary consumers |
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secondary or tertiary consumers |
Secondary or tertiary consumers may be omnivores.
Carbohydrates are found in:
sugars and starches |
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animal sources |
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vegetable oils |
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food additives |
Carbohydrates are major sources of energy for the body and are found in sugars (fruit, cane sugar, beets) and starches (bread, rice, potatoes, pasta).
During digestion, where is digested food absorbed into the blood stream?
stomach |
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pancreas |
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small intestine |
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large intestine |
The small intestine is where most digestion takes place. As food travels along the small intestine it gets broken down completely by enzymes secreted from the walls. These enzymes are produced in the small intestine as well as in the pancreas and liver. After the enzymes break down the food, the resulting substances are then absorbed into the blood via capillaries in the small intestine walls.