| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.07 |
| Score | 0% | 61% |
In the heart, the __________ artery and vein manage blood flow to the lungs.
pulmonary |
|
capillary |
|
atrial |
|
aorta |
The two largest veins in the body, the venae cavae, pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.
212°F is how many °C?
-100 |
|
0 |
|
\(135 {5 \over 9}\) |
|
100 |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (212 - 32)\)
\(C° = {5 \over 9} (180) = {{180 \times 5} \over 9}\)
\(C° = {900 \over 9}\)
\(C° = 100\)
Which of the following does not represent the freezing point of water?
273K |
|
32°F |
|
0°F |
|
0°C |
The Fahrenheit scale fixes the freezing point of water at 32°F, the Celsuis scale at 0°C, and the Kelvin scale at 273K.
In taxonomy, domains are the broadest classification of life. How many domains are there?
dozens |
|
6 |
|
5 |
|
3 |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
Examples of secondary consumers include:
chickens |
|
wolves |
|
grasshoppers |
|
plankton |
Secondary consumers (carnivores) subsist mainly on primary consumers. Omnivores are secondary consumers that also eat producers. Examples are rats, fish, and chickens.