Which of the following are present in only some living things?

a. ATP as a molecule that shuttles energy between reactions
b. DNA and RNA
c. ribosomes
d. phospholipid bilayer membranes
e. All of the above, and more, are common to ALL life on earth.

We have a tie. 4 correct and 4 wrong answers with one undecided. The question states living things so that excludes viruses. All known life on this planet uses ATP. Some reactions can use GTP, UTP or CTP but ATP is far more commonly used to drive chemical reactions.

All known life has DNA and RNA. Yes, bacteria have DNA genomes. They transcribe RNA as well.

All life forms use ribosomes to translate from nucleic acids into proteins. All cells need to maintain a barrier between the the outside environment and all the biochemical goodies it needs to keep together and a phospholipid bilayer is universally used. (Some cells have cell walls as well).

The second question…really?

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