Your Results | Global Average | |
---|---|---|
Questions | 5 | 5 |
Correct | 0 | 3.22 |
Score | 0% | 64% |
A subatomic particle found in the nucleus of an atom. It carries no electric charge. This desribes which of the following?
proton |
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atom |
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neutron |
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electron |
A neutron is a subatomic particle found in the nucleus of an atom. It is neutral as it carries no electric charge.
Which of these is not a function of bone in the human skeletal system?
store minerals |
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protect bodily organs |
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store vitamins |
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produce blood cells |
Hard bones provide primary support for the endoskeleton while more flexible cartilage is found at the end of all bones, at the joints, and in the nose and ears. In addition to providing support and protecting bodily organs, bones also produce blood cells and store minerals like calcium.
The respiratory and circulatory systems are similar in that they:
add carbon dioxide |
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deoxygenate blood |
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transport nutrients |
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transport oxygen |
Like the respiratory system, the circulatory system serves to transport oxygen throughout the body while removing carbon dioxide. In addition, the circulatory system transports nutrients from the digestive system.
Which of the following would be used in eye glasses to correct nearsightedness?
concave mirror |
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convex mirror |
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concave lens |
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convex lens |
Unlike curved mirrors that operate on the principle of reflection, lenses utilize refraction. A convex lens is thicker in the middle than on the edges and converges light while a concave lens is thicker on the edges than in the middle and diffuses light. A common use for curved lenses is in eye glasses where a convex lens is used to correct farsightedness and a concave lens is used to correct nearsightedness.
During digestion, after proteins are broken down where does the undigested food go next?
large intestine |
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esophagus |
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stomach |
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small intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.