| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.37 |
| Score | 0% | 67% |
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
stomach |
|
mouth |
|
small intestine |
|
large intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Antigens are found on the outside of which blood cells?
white |
|
platelets |
|
plasma |
|
red |
Blood is categorized into four different types (A, B, AB, and O) based on the type of antigens found on the outside of the red blood cells. Additionally, each type can be negative or positive based on whether or not the cells have an antigen called the Rh factor.
Menstruation occurs when:
the ovum fails to become fertilized |
|
the zygote is formed |
|
the fetus is formed |
|
the ovum becomes fertilized |
If the ovum fails to become fertilized, the lining of the uterus sloughs off during menstruation. From puberty to menopause, this cycle of menstruation repeats monthly (except during pregnancy).
Generally, an atom has __________ negative electrons orbiting the nucleus as it does positive protons inside.
double the number of |
|
fewer |
|
more |
|
equal numbers of |
An electron is a subatomic particle that orbits the nucleus of an atom. It carries a negative electric charge. Generally, an atom has the same number of negative electrons orbiting the nucleus as it does positive protons inside.
Acceleration is the rate of change of velocity per unit of time. Which of these is the formula for acceleration?
\(\vec{a} = { t \over \Delta \vec{v} }\) |
|
\(\vec{a} = { \Delta \vec{v} \over t }\) |
|
\(\vec{a} = \Delta \vec{v} t \) |
|
\(\vec{a} = { \vec{v} \over t }\) |
Acceleration is the rate of change of velocity per unit of time. In physics, the delta symbol (\(\Delta\)) represents change so the formula for acceleration becomes \(\vec{a} = { \Delta \vec{v} \over t }\)