Which is true about eukaryotes?
Their cells are generally smaller than those of prokaryotes.
Their cells have plasmids.
Their cells have membrane-bound organelles.
Their cells do not have any DNA.
The correct statement about eukaryotes is that their cells have membrane-bound organelles.
To understand why this is true, let's first define what eukaryotes are. Eukaryotes are organisms whose cells contain a nucleus and other membrane-bound organelles. They include plants, animals, fungi, and protists. In contrast, prokaryotes are organisms (such as bacteria) whose cells do not have a nucleus or membrane-bound organelles.
Now, let's analyze each given statement to determine if it is true or false:
1. Their cells are generally smaller than those of prokaryotes:
This statement is false. In general, eukaryotic cells are larger than prokaryotic cells. Eukaryotes have larger membranes, more complex internal structures, and contain more genetic material.
2. Their cells have plasmids:
This statement is false. Plasmids are small, circular DNA molecules found in some prokaryotes, but they are not typically found in eukaryotes.
3. Their cells have membrane-bound organelles:
This statement is true. Eukaryotic cells are characterized by the presence of membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, and lysosomes. These organelles are responsible for various cellular functions and compartmentalize the cell's activities.
4. Their cells do not have any DNA:
This statement is false. All living cells, including eukaryotic cells, contain DNA. DNA carries the genetic information that determines the characteristics and functions of an organism.
In conclusion, the correct statement about eukaryotes is that their cells have membrane-bound organelles.