| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
__________ is caused by a lack of iron in the diet.
anemia |
|
diabetes |
|
shingles |
|
scurvy |
Anemia, which may cause weakness, dizziness, and headaches is caused by a lack of iron in the diet.
-40°F is how many °C?
\(-{40 \over 9}\) |
|
-40 |
|
\({40 \over 9}\) |
|
-8 |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (-40 - 32)\)
\(C° = {5 \over 9} (-72) = {{-72 \times 5} \over 9}\)
\(C° = {-360 \over 9}\)
\(C° = -40\)
During digestion, the kidneys filter substances from the blood. Which of the following is not filtered by the kidneys?
water |
|
salt |
|
minerals |
|
fats |
Chemical waste like excess water, minerals, and salt are filtered from the blood by the kidneys and secreted into the urine. Urine is transported from the kidneys to the bladder through ureters.
Heat is always transferred from __________ to __________ environments.
warmer, cooler |
|
empty, dense |
|
cooler, warmer |
|
dense, empty |
Heat is always transferred from warmer to cooler environments and conduction is the simplest way this transfer can occur. It is accomplished through direct contact between materials and materials like metals that transfer heat efficiently are called conductors while those that conduct heat poorly, such as plastic, are called insulators.
Molecules and atoms that are inputs to a chemical reaction are known as which of the following?
reactants |
|
products |
|
components |
|
fuel |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).