| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
During digestion, after proteins are broken down where does the undigested food go next?
large intestine |
|
small intestine |
|
esophagus |
|
stomach |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Sound travels fastest through which of the following media?
air |
|
water |
|
metal |
|
vacuum |
The speed of a sound wave will vary with the medium. Sound travels fastest through media that has particles that are very close together, like metal. Thus, it travels faster through water than through air and doesn't travel at all through a vacuum (there are no particles in empty space to vibrate).
Atoms of an element whose atoms can vary in the number of neutrons in their nucleus are called which of the following?
ions |
|
isotopes |
|
products |
|
reactants |
The atomic mass of an element listed in the Periodic Table represents the average mass of a single atom of that element and is measured in atomic mass units (amu). This number is an average as some elements have isotopes with atoms that vary in their number of neturons and, therefore, differ in weight.
Heredity is the passing on of physical or mental characteristics genetically from one __________ to another.
family |
|
cell |
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generation |
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species |
Heredity is the passing on of physical or mental characteristics genetically from one generation to another. Heredity is made possible via large strings of chromosomes which carry information encoded in genes.
Which of the following is not a method of heat transfer?
radiation |
|
reflection |
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convection |
|
conduction |
Heat is always transferred from warmer to cooler environments through conduction, convection, or radiation.