| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.44 |
| Score | 0% | 69% |
Which of the following is the narrowest classification of life?
domain |
|
species |
|
family |
|
genus |
The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.
The small intestine utilizes enzymes produced where?
liver |
|
pancreas |
|
all of these are correct |
|
small intestine |
The small intestine is where most digestion takes place. As food travels along the small intestine it gets broken down completely by enzymes secreted from the walls. These enzymes are produced in the small intestine as well as in the pancreas and liver. After the enzymes break down the food, the resulting substances are then absorbed into the blood via capillaries in the small intestine walls.
A person's genotype is their genetic makeup and includes:
recessive alleles |
|
dominant alleles |
|
both dominant and recessive alleles |
|
phenotypes |
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.
Which of the following does not represent the freezing point of water?
273K |
|
0°C |
|
0°F |
|
32°F |
The Fahrenheit scale fixes the freezing point of water at 32°F, the Celsuis scale at 0°C, and the Kelvin scale at 273K.
Which of the following is the smallest component of an element that still retains the properties of the element?
neutron |
|
atom |
|
element |
|
molecule |
An atom is the smallest component of an element that still retains the properties of the element.