| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.85 |
| Score | 0% | 57% |
In the heart, blood flows from the __________ ventricle to the lungs then back to the heart via the __________ atrium.
right, left |
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right, right |
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left, left |
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left, right |
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.
Which of the following describes how a person's genes express themselves in physical characteristics?
genotype |
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chromotype |
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phenotype |
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DNA |
A person's genotype is their genetic makeup and includes both dominant and recessive alleles. Phenotype is how the genes express themselves in physical characteristics.
Which of the following is the smallest component of an element that still retains the properties of the element?
atom |
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neutron |
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molecule |
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element |
An atom is the smallest component of an element that still retains the properties of the element.
Blood is circulated throughout the body via:
veins |
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arterioles |
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aorta |
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capillaries |
The aorta is the body's largest artery and receives blood from the pulmonary vein via the left ventricle. From there, blood is circulated through the rest of the body through smaller arteries called arterioles that branch out from the heart. Finally, blood is delivered to bodily tissues through capillaries.
Which of these is matter than cannot be separated into different types of matter by ordinary chemical methods?
compound |
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element |
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molecule |
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atom |
An element is matter than cannot be separated into different types of matter by ordinary chemical methods.