AP Bio Insta-Review Topic 7.13*: Origins of Life on Earth

Front

What is the estimated time when Earth became hospitable for life?

Back

3.9 billion years ago.

Front

What was the first genetic material on Earth?

Back

RNA.

Front

What is the monomer for nucleic acids?

Back

Nucleotides.

Front

Which macromolecule is not made of monomers?

Back

Lipids.

Front

True or False: Organic compounds could have come to Earth on meteorites.

Back

True.

Front

What are the four main types of macromolecules?

Back

Carbohydrates, Proteins, Lipids, Nucleic Acids.

Front

What is the primary function of nucleic acids?

Back

To store and transmit genetic information.

Front

What are the building blocks of proteins?

Back

Amino acids.

Front

What is the process by which RNA is synthesized from DNA?

Back

Transcription.

Front

What is the role of ribosomes in a cell?

Back

To synthesize proteins.