| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.19 |
| Score | 0% | 64% |
Which of these is not a function of bone in the human skeletal system?
store vitamins |
|
store minerals |
|
protect bodily organs |
|
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.
Which of the following is not a medium for sound waves?
liquid |
|
none of these is a medium for sound waves |
|
vacuum |
|
solid |
A vibrating object produces a sound wave that travels outwardly from the object through a medium (any liquid or solid matter). The vibration disturbs the particles in the surrounding medium, those particles disturb the particules next to them, and so on, as the sound propagates away from the vibration.
In cell biology, the primary difference between anaerobic and aerobic respiration is that aerobic respiration requires:
mitochondria |
|
sugar |
|
oxygen |
|
water |
Some plant cells produce their own energy through photosynthesis which is the process by which sunlight, carbon dioxide, and water react to make sugar and oxygen. Animal cells cannot produce their own energy and, instead, generate energy when mitochondria consume outside sugar and oxygen through aerobic respiration.
A major difference between sound waves and light waves is which of the following?
a sound wave cannot travel through a vacuum |
|
a sound wave is mechanical while a light wave is electromagnetic |
|
a sound wave is much slower than a light wave |
|
all of these are correct |
A vibrating object produces a sound wave that travels outwardly from the object through a medium (any liquid or solid matter). The vibration disturbs the particles in the surrounding medium, those particles disturb the particules next to them, and so on, as the sound propagates away from the vibration.
Changes to an object's speed or direction of motion are caused by which of the following?
a force |
|
kinetic energy |
|
power |
|
work |
Force is applied to change an object's speed or direction of motion.