The first living things on Earth, single-celled micro-organisms or microbes lacking a cell nucleus or cell membrane known as prokaryotes, seem to have first appeared on Earth almost four billion years ago, just a few hundred million years after the formation of the Earth itself.
This copy, which contains the instructions to make 1 protein, is called an mRNA or messenger RNA. After the mRNA is made, it is trimmed down to a final size, and shipped out of the nucleus! When the mRNA gets into the cytoplasm, it is made into protein
Answer:
A. Conduct impulses faster.
Explanation:
Myelinated axons are called that way due to the myelin sheath that surrounds them. Myelin has an insulation property so electrical impulses cannot travel through it, except on certain sites called Nodes of Ranvier. In order for electrical impulses to be conducted on myelinated axons they must "jump" from one Node of Ranvier to the next, and thus conduction is faster. This is called saltatory conduction.
It's B. The cheetah populations are less likely to be able to adapt to environmental changes.
Struggled with this earlier but because of the high altitude only some animals can live there and thrive because of the lower oxygen levels