STAAR Biology Practice Assessment

Front

What describes how genes are expressed in an organism?

Back

Genes are turned on and off in response to the environment.

Front

What are the building blocks of DNA?

Back

Nucleotides.

Front

What organelle is found in eukaryotic cells but not in prokaryotic cells?

Back

Mitochondria.

Front

Which two species of fungi are most closely related?

Back

Candida albicans and Saccharomyces cerevisiae.

Front

Which species is likely to experience the highest rates of evolution based on offspring production?

Back

Oriental fruit fly.

Front

What is the function of ribosomes in a cell?

Back

Ribosomes are responsible for protein synthesis.

Front

What is the role of mitochondria in a cell?

Back

Mitochondria are the powerhouses of the cell, generating ATP through respiration.

Front

What is the structure of DNA?

Back

DNA is a double helix made up of nucleotides.

Front

What is the difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have them.

Front

What is evolution?

Back

Evolution is the change in the heritable characteristics of biological populations over successive generations.