question below:
A single prokaryotic cell can divide several times in an hour. Few eukaryotic cells can divide as quickly. Which of the following statements best explains this difference?
OPTIONS:
- Eukaryotic cells are smaller than prokaryotic cells.
- Eukaryotic cells have less DNA than prokaryotic cells.
- Eukaryotic cells have more cell walls than prokaryotic cells.
- Eukaryotic cells are more structurally complex than prokaryotic cells.
answer below:
Eukaryotic cells are more structurally complex than prokaryotic cells.

question below:
In one of the steps of the carbon cycle, a person exhales a molecule of carbon dioxide (CO2) into the atmosphere. Which of the following is most likely to happen next to the atom of carbon in this molecule?
OPTIONS:
- It may be used as part of a sugar in a plant.
- It may become part of a protein in an animal.
- It may be consumed as a fossil fuel is burned.
- It may be decomposed into carbon and oxygen by a bacterium.
answer below:
It may be used as part of a sugar in a plant.

question below:
What is the frequency of ocean waves that have a speed of 18 m/s and a wavelength of 50 m?
OPTIONS:
- 0.18 Hz
- 0.36 Hz
- 2.8 Hz
- 9.0 Hz
answer below:
0.36 Hz

question below:
According to the periodic table, all of the following are metals except
OPTIONS:
- sodium
- zinc
- fluorine
- calcium
answer below:
fluorine