| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.43 |
| Score | 0% | 69% |
Which of the following is not a base unit in the metric system?
gram |
|
degree Fahrenheit |
|
meter |
|
liter |
The Fahrenheit scale is used for measuring temperature in the British system. The metric system uses the Celsius scale.
Which of blood component carries oxygen?
plasma |
|
platelets |
|
red blood cells |
|
white 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.
Within DNA, a variety of a particular gene is called a(n):
chromosome |
|
allele |
|
heterozygous |
|
homozygous |
The gene is the base unit of inheritance and is contained within DNA. A gene may come in several varieties (alleles) and there are a pair of alleles for every gene. If the alleles are alike, a person is homozygous for that gene. If the alleles are different, heterozygous.
All surface water is part of the:
geosphere |
|
hydrosphere |
|
atmosphere |
|
lithosphere |
The biosphere is the global ecological system integrating all living beings and their relationships. This includes their interactions with the lithosphere (the rigid outer part of the earth, consisting of the crust and upper mantle), hydrosphere (all surface water), and atmosphere (the envelope of gases surrounding the planet).
-40°F is how many °C?
-8 |
|
-40 |
|
\(-{40 \over 9}\) |
|
\({40 \over 9}\) |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (-40 - 32)\)
\(C° = {5 \over 9} (-72) = {{-72 \times 5} \over 9}\)
\(C° = {-360 \over 9}\)
\(C° = -40\)