| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.15 |
| Score | 0% | 63% |
Which of these is not a phase in cell division?
megaphase |
|
cytokinesis |
|
interphase |
|
anaphase |
Cell division is the process by which cells replicate genetic material in the nucleus and consists of several phases, beginning with interphase and ending with cytokinesis.
Which of the following indicates the correct reproductive sequence?
none of these are correct |
|
ovum → fetus → zygote |
|
zygote → ovum → fetus |
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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.
Changes to an object's speed or direction of motion are caused by which of the following?
kinetic energy |
|
a force |
|
power |
|
work |
Force is applied to change an object's speed or direction of motion.
Absolute zero is which of the following?
the freezing point of hydrogen |
|
the coldest temperature possible in the universe |
|
the freezing point of oxygen |
|
0°C |
In contrast to the Celsius scale (measured in degrees centigrade) that fixes 0° at the freezing point of water and the Fahrenheit scale that uses 32°, the Kelvin scale fixes 0 at absolute zero (-273°C) which is the lowest temperature possible in the universe.
When compared to eukaryotic cells, prokaryotic cells are:
less complex |
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similarly complex |
|
none of these |
|
more complex |
Cells are classified into one of two groups based on whether or not they have a nucleus. Eukaryotic cells have a nucleus, prokaryotic cells do not have a nucleus and therefore have a less complex structure than eukaryotic cells.