Biology S1 Exam Review Set 1

Front

What part of a nucleotide varies among the five types found in DNA and RNA?

Back

Nitrogenous base.

Front

What are the species called that occupy an ecosystem at the end of secondary succession?

Back

Climax species.

Front

Which cellular organelle reads RNA and assembles amino acids into proteins?

Back

Ribosome.

Front

What is the main purpose of carbohydrates for living organisms?

Back

Fuel.

Front

What is the structure of a DNA molecule known as?

Back

Double helix.

Front

What are the building blocks of proteins?

Back

Amino acids.

Front

What is the process by which plants convert sunlight into chemical energy?

Back

Photosynthesis.

Front

What is the basic unit of life?

Back

Cell.

Front

What type of bond holds the two strands of DNA together?

Back

Hydrogen bonds.

Front

What is the function of ribosomes in a cell?

Back

To synthesize proteins.