Biology STAAR Review

Front

What are homologous structures?

Back

Structures in different species that share a common ancestry but have different functions.

Front

What is a deletion mutation?

Back

A type of mutation where a segment of DNA is removed, resulting in a change in the genetic sequence.

Front

What is the function of xylem in plants?

Back

Xylem is the vascular tissue that carries water and dissolved minerals from the roots to the leaves.

Front

What distinguishes prokaryotic cells from eukaryotic cells?

Back

Prokaryotic cells lack membrane-bound organelles, while eukaryotic cells contain them.

Front

What is the complementary DNA sequence for ATG TGA CAG?

Back

TAC ACT GTC.

Front

What are vestigial structures?

Back

Structures that have lost their original function through evolution.

Front

What is adaptive radiation?

Back

The process by which organisms diversify rapidly into a variety of forms to adapt to different environments.

Front

What is the role of phloem in plants?

Back

Phloem is the vascular tissue that transports sugars and nutrients produced by photosynthesis.

Front

What is the significance of mutations in evolution?

Back

Mutations introduce genetic variation, which can lead to adaptations and evolution over time.

Front

What are the main differences between DNA and RNA?

Back

DNA is double-stranded and contains thymine, while RNA is single-stranded and contains uracil.