2 Billion years
"Uni" means "one", so a unicellular organism is an organism consisting of only one cell, such as a bacterium, protozoan, etc.
A herbivore is an animal (or human) that eats only plants. Some examples are a deer or a person who is a vegetarian.
Earth's moon is in synchronious rotation, meaning that it takes as long for the moon to rotate on it's axis as it does to make one revolution around Earth.
Clever mechanisms turn genes off and on so that they only function when there is a need for their services
Any animal that eats only plants. Cows, horses, sheep, rabbits.
2 billions years
Prokaryotes were the only kind of life on earth approximately 2 billion years ago. They existed long before eukaryotes ever came into existence at all.
Prokaryotes - Bacteria
Yes they are - yet they are not the only examples.
As a eukaryotic organism, you're only going to produce eukaryotic cells. However, there will be prokaryotes (bacteria) in your mouth and on your cheek.
They are eukaryotes, not prokaryotes. Only backeria can be prokaryotes.
hey are only in eukaryotes. They are never in prokaryotes.
70s ribosomes are in prokaryotes.80s ribosomes are found only in eukaryotes.
A eukaryote (yoo-ca-ree-ote) is a cell with a nucleus. All fungi, protists, animals, and plants are eukaryotes. On the other hand, a prokaryote (pro-ca-ree-ote) is a cell without a nucleus. Bacteria (such as blue-green algae, a cyanobacteria) are the only known prokaryotes on Earth.
Chromosome is a condensed form of the DNA, not an organism. Therefore, it doesn't fit into either of the categories because it is not an organism to begin with. However, a chromosome is only found in a eukaryote because the formation and the split of a chromosome is part of mitosis, a division of the nucleus.
Cockroach the only place its not found in is the north pole
Eukaryotes have a nucleus, prokaryotes only have a nucleoid (region where the cell's DNA is located, not enclosed by a membrane). But that's not the only difference. Prokaryotes also lack almost all the other organelles that eukaryotes have. Prokaryotes only have the nucleoid and free ribosomes in their internal structure.