Biology STAAR Review

Front

What is gene flow?

Back

Gene flow is the transfer of genetic material between populations, which can occur when individuals move from one population to another, leading to changes in allele frequencies.

Front

What type of cell is characterized by the absence of a nucleus?

Back

Prokaryotic cell.

Front

What is the primary function of nucleic acids?

Back

To store and transmit genetic information.

Front

What does it mean if two organisms share a common ancestor?

Back

It means that they have evolved from a shared lineage, indicating a closer evolutionary relationship.

Front

What is the difference between a plant cell and an animal cell?

Back

Plant cells have a cell wall and chloroplasts, while animal cells do not.

Front

What is the significance of comparing amino acid sequences among organisms?

Back

It helps scientists determine the relatedness and evolutionary relationships among different species.

Front

What is the role of biological catalysts?

Back

Biological catalysts, or enzymes, speed up chemical reactions in living organisms.

Front

What is the function of the humerus bone in primates?

Back

The humerus bone is involved in the movement of the arm and is adapted for various functions depending on the primate's environment.

Front

What is allele frequency?

Back

Allele frequency is the proportion of a specific allele among all allele copies in a population.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an organism, while phenotype refers to the observable traits or characteristics.