| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.99 |
| Score | 0% | 60% |
Acceleration is the rate of change of velocity per unit of time. Which of these is the formula for acceleration?
\(\vec{a} = { \Delta \vec{v} \over t }\) |
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\(\vec{a} = { t \over \Delta \vec{v} }\) |
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\(\vec{a} = { \vec{v} \over t }\) |
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\(\vec{a} = \Delta \vec{v} t \) |
Acceleration is the rate of change of velocity per unit of time. In physics, the delta symbol (\(\Delta\)) represents change so the formula for acceleration becomes \(\vec{a} = { \Delta \vec{v} \over t }\)
In cell biology, where does DNA replication take place?
cytoplasm |
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nucleus |
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Golgi apparatus |
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mitochondria |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
Heat is always transferred from __________ to __________ environments.
dense, empty |
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empty, dense |
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cooler, warmer |
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warmer, cooler |
Heat is always transferred from warmer to cooler environments and conduction is the simplest way this transfer can occur. It is accomplished through direct contact between materials and materials like metals that transfer heat efficiently are called conductors while those that conduct heat poorly, such as plastic, are called insulators.
During digestion, after proteins are broken down where does the undigested food go next?
small intestine |
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stomach |
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large intestine |
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esophagus |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
In cell biology, what part of the cell contains organelles?
cytoplasm |
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cell wall |
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nucleus |
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cell membrane |
The nucleus of a eukaryotic cell contains the genetic material of the cell and is surrounded by cytoplasm which contains many organelles.