| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.73 |
| Score | 0% | 75% |
In cell biology, where does DNA replication take place?
cytoplasm |
|
Golgi apparatus |
|
nucleus |
|
mitochondria |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
Earth's troposphere layer is which of the following?
coldest |
|
farthest from the surface |
|
closest to the surface |
|
hottest |
The Earth's atmosphere has several layers starting with the troposphere which is closest in proximity to the surface. Containing most of the Earth's breathable air (oxygen and nitrogen), it's a region with warmer temperatures closer to the surface and cooler temperatures farther away which results in the rising and falling air that generates weather.
The heat from the Sun traveling to Earth is an example of which of the following?
convection |
|
conduction |
|
electricity |
|
radiation |
Radiation occurs when electromagnetic waves transmit heat. An example is the heat from the Sun as it travels to Earth.
Which of blood component carries oxygen?
plasma |
|
white blood cells |
|
platelets |
|
red blood cells |
Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.
Blood is created in:
red blood cells |
|
the liver |
|
the heart |
|
bone marrow |
Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.