1. Which of the following is NOT a characteristic of animals? A. Heterotrophic
B. Contain eukaryotic cells
C. Contain cell walls
D. Mobility

2. All of the following our characteristics of mammals except mammals are not .
A. Endothermic
B. Exothermic
C. Vertebrates
D. Heterotrophs.

How did the miller-urey experiment impact the way scientists think about the origins of life? use what you know about the miller-urey experiments to discuss the factors needed for life to arise, and speculate on whether life could arise on another planet.

What is the difference between bacterial infections and viral infections?

The empty trna moves off and picks up another matching amino acid from the cytoplasm in the cell. the anticodon of the trna, with its attached amino acid, pairs to the codon of the mrna, which is attached to a ribosome. this sequence is repeated until the ribosome reaches a stop codon on the mrna, which signals the end of protein synthesis. the ribosome forms a peptide bond between the amino acids, and an amino acid chain begins to form. when a second trna with its specific amino acid pairs to the next codon in sequence, the attached amino acid breaks from the first trna and is bonded to the amino acid of the second trna.