How does our body get the materials that it needs for respiration?

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

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?