Are cisternae double layered or not?

This is one form of rna that transports a specific amino acid to a ribosome during protein synthesis.

How is transcription similar to translation in terms of base pairing?

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.