Precipitation occurs when warm air begins to rise and cool two different types of air masses meet two of the same type of air masses meet cool air begins to sink and warm

If the coding part of an mrna molecule is 1800 nucleotides (bases) in length, this molecule will contain codons and code for a polypeptide that is amino acids long.

Which statement is true for bacteria a. bacteria have complex internal structures b. all bacteria are spiral in shape c. all bacteria cause disease in animals d. bacteria break down some foods

If a checkpoint detects damaged dna, the checkpoint may