| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.42 |
| Score | 0% | 68% |
Atoms of an element whose atoms can vary in the number of neutrons in their nucleus are called which of the following?
ions |
|
products |
|
reactants |
|
isotopes |
The atomic mass of an element listed in the Periodic Table represents the average mass of a single atom of that element and is measured in atomic mass units (amu). This number is an average as some elements have isotopes with atoms that vary in their number of neturons and, therefore, differ in weight.
__________ is caused by a lack of iron in the diet.
scurvy |
|
shingles |
|
diabetes |
|
anemia |
Anemia, which may cause weakness, dizziness, and headaches is caused by a lack of iron in the diet.
Which of the following describes the Earth's outer core?
liquid |
|
makes up most of the Earth's volume |
|
solid |
|
primarily solid |
The Earth's core is divided into the liquid outer core (1,430 miles or 2,300 km radius) and the solid inner core (745 miles or 1,200 km radius).
In taxonomy, domains are the broadest classification of life. How many domains are there?
6 |
|
5 |
|
3 |
|
dozens |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.
decrease, raise |
|
raise, decrease |
|
stabilize, raise |
|
decrease, stabilize |
Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.