| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.37 |
| Score | 0% | 67% |
Molecules and atoms that are outputs from a chemical reaction are known as which of the following?
reactants |
|
products |
|
results |
|
side effects |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).
Menstruation occurs when:
the ovum becomes fertilized |
|
the ovum fails to become fertilized |
|
the fetus is formed |
|
the zygote is formed |
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).
Which of the following does not represent the freezing point of water?
273K |
|
32°F |
|
0°C |
|
0°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.
__________ is caused by a lack of iron in the diet.
shingles |
|
diabetes |
|
anemia |
|
scurvy |
Anemia, which may cause weakness, dizziness, and headaches is caused by a lack of iron in the diet.
Which of the following indicates the correct reproductive sequence?
ovum → fetus → zygote |
|
none of these are correct |
|
zygote → ovum → fetus |
|
ovum → zygote → fetus |
During intercourse, the penis ejaculates sperm, produced in the testes, into the vagina. Some of the sperm makes their way to the uterus where, if they encounter an egg to fertilize, unite with the ovum to form a fertilized egg or zygote. The zygote then may implant in the uterus and eventually develop into a fetus.