| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.
stabilize, raise |
|
decrease, raise |
|
decrease, stabilize |
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raise, decrease |
Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.
Velocity and displacement are fully described by both a magnitude and a direction. Velocity and displacement are which of the following?
scalar quantities |
|
combinational quantities |
|
vector quantities |
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composite quantities |
Velocity and displacement are vector quantities which means each is fully described by both a magnitude and a direction. In contrast, scalar quantities are quantities that are fully described by a magnitude only. A variable indicating a vector quantity will often be shown with an arrow symbol: \(\vec{v}\)
Tough fibrous cords of connective tissue that connect muscles to the skeleton are called:
vertebra |
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ligaments |
|
tendons |
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cartilage |
Tough fibrous cords of connective tissue called tendons connect muscles to the skeleton while another type of connective tissue called ligaments connect bones to other bones at joints (elbow, knee, fingers, spinal column).
Which of the following does not represent the freezing point of water?
0°F |
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32°F |
|
0°C |
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273K |
The Fahrenheit scale fixes the freezing point of water at 32°F, the Celsuis scale at 0°C, and the Kelvin scale at 273K.
Earth's history is divided into time periods, which of these is the shortest time period?
age |
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period |
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epoch |
|
eon |
The Earth is approximately 4.6 billion years old and its history is divided into time periods based on the events that took place and the forms of life that were dominant during those periods. The largest graduation of time is the eon and each eon is subdivided into eras, eras into periods, periods into epochs, and epochs into ages.