| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.61 |
| Score | 0% | 72% |
A person's genotype is their genetic makeup and includes:
phenotypes |
|
dominant alleles |
|
recessive alleles |
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both dominant and recessive alleles |
A person's genotype is their genetic makeup and includes both dominant and recessive alleles. Phenotype is how the genes express themselves in physical characteristics.
212°F is how many °C?
100 |
|
0 |
|
\(135 {5 \over 9}\) |
|
-100 |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (212 - 32)\)
\(C° = {5 \over 9} (180) = {{180 \times 5} \over 9}\)
\(C° = {900 \over 9}\)
\(C° = 100\)
What part of the nervous system controls simple reflexes?
medulla |
|
cerebrum |
|
spinal cord |
|
autonomic |
The spinal cord connects the brain to the body's network of nerves. It carries impulses between all organs and the brain and controls simple reflexes.
A subatomic particle found in the nucleus of an atom. It carries no electric charge. This desribes which of the following?
neutron |
|
proton |
|
electron |
|
atom |
A neutron is a subatomic particle found in the nucleus of an atom. It is neutral as it carries no electric charge.
Velocity and displacement are fully described by both a magnitude and a direction. Velocity and displacement are which of the following?
vector quantities |
|
composite quantities |
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scalar quantities |
|
combinational quantities |
Velocity and displacement are vector quantities which means each is fully described by both a magnitude and a direction. In contrast, scalar quantities are quantities that are fully described by a magnitude only. A variable indicating a vector quantity will often be shown with an arrow symbol: \(\vec{v}\)