An object has less weight on the Moon than it has on Earth. What causes this difference? a. increased friction
b. the lack of an atmosphere
c. a decrease in gravity
d. the lack of water

Order the steps of protein synthesis. amino acids are lined up in a sequence. rna is modified into mrna. dna is transcribed. a ribosome binds to mrna. chemical bonds are formed and a protein is produced.

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

20 the compound al(nh3)2 has atoms of nitrogen.