| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.31 |
| Score | 0% | 66% |
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.
molecule |
|
ion |
|
neutron |
|
isotope |
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.
Leafy vegetables, beans, potatoes, fruits, and whole grains are good sources of:
unsaturated fat |
|
protein |
|
saturated fat |
|
fiber |
Fiber provides bulk to help the large intestine carry away waste. Good sources of fiber are leafy vegetables, beans, potatoes, fruits, and whole grains.
The heart __________ blood.
creates |
|
oxygenates |
|
filters |
|
deoxygenates |
To provide oxygen to the body, blood flows through the heart in a path formed by the right atrium → right ventricle → lungs → left atrium → left ventricle → body. When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.
Which of the following is the formula for work?
\(W = \vec{F}\vec{d}\) |
|
\(W = {{F}\over{d}}\) |
|
\(W = {\vec{F} \over \vec{d} }\) |
|
\(W = {F}{d}\) |
Work is performed on an object when an applied force causes displacement along the same vector. Measured in joules (J) or newton-meter (Nm), work is calculated by multiplying force times displacement: \(W = \vec{F}\vec{d}\)
In taxonomy, domains are the broadest classification of life. How many domains are there?
3 |
|
5 |
|
dozens |
|
6 |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.