Label A: Nucleoplasm
Label B: Lysosome
Label C: Nuclear Pore
Label D: Centrioles
The answer is an aminoacyl-tRNA synthetase.
<span> The aminoacyl-tRNA synthetase is an enzyme responsible for the attachment of an amino acid to tRNA. First, it binds the ATP and the amino acid which results in aminoacyl-AMP and inorganic pyrophosphate. Aminoacyl-AMP binds the appropriate tRNA molecule. The aminoacyl group dissociates from the complex with AMP and binds the tRNA molecule creating aminoacyl-tRNA.</span>
Answer: The types of life which were NOT on Earth 250 million years ago are dinosaurs, flowers, flowering plants and animals with fur ( mammals).
Explanation:The Permian period began about 299 million years ago which ended in the largest mass extinction the Earth has ever known.Mammal like reptiles and exotic ocean animals were present during the Permian period. After the extinction which ended the Permian period alot of living things were destroyed. dinosaurs, flowers, flowering plants and animals with fur ( mammals) were all affected. Hope this helps. Thanks.
