Which of the following is not a nitrogenous base in a dna molecule?
thymine
cytosine
uracil
adenine

uracil

Explanation:

There are four nitrogenous bases in DNA which are Thymine, Guanine, Adenine, and Cytosine, Uracil is found in RNA molecules and it helps carry out the synthesis of enzimes that help with the many functions of our body, but it  is not present in a DNA molecule. The Methylation of Uracil would convert it into Thymine.

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.