| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
A __________ is the smallest multi-atom particle of an element or compound that can exist and still retain the characteristics of the element or compound.
ion |
|
isotope |
|
neutron |
|
molecule |
A molecule is the smallest multi-atom particle of an element or compound that can exist and still retain the characteristics of the element or compound. The molecules of elements consist of two or more similar atoms, the molecules of compounds consist of two or more different atoms.
50°F is how many °C?
10 |
|
58 |
|
-10 |
|
122 |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (50 - 32)\)
\(C° = {5 \over 9} (18)\)
\(C° = {90 \over 9}\)
\(C° = 10\)
Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.
decrease, raise |
|
stabilize, raise |
|
raise, decrease |
|
decrease, stabilize |
Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.
In which type of compound does one atom borrow an electron from another atom?
acidic |
|
covalent |
|
ionic |
|
chemical |
A compound is a substance containing two or more different chemical elements bound together by a chemical bond. In covalent compounds, electrons are shared between atoms. In ionic compounds, one atom borrows an electron from another atom resulting in two ions (electrically charged atoms) of opposite polarities that then become bonded electrostatically.
Within DNA, a variety of a particular gene is called a(n):
homozygous |
|
chromosome |
|
heterozygous |
|
allele |
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.