Unit 1 and 2 Review Practice

Front

What is geographic isolation?

Back

Geographic isolation occurs when a population of a species is separated by physical barriers, such as mountains or rivers, preventing them from interbreeding.

Front

What is a gene pool?

Back

A gene pool is the total collection of genes and their variants in a population, representing the genetic diversity available for evolution.

Front

What is the structure of a DNA molecule?

Back

A DNA molecule is structured as a double helix, consisting of two strands twisted around each other, held together by base pairs.

Front

What is the function of enzymes?

Back

Enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy, helping to build or break down substances.

Front

What is a substrate in enzymatic reactions?

Back

A substrate is the reactant molecule upon which an enzyme acts, binding to the enzyme's active site.

Front

What is behavioral isolation?

Back

Behavioral isolation occurs when two populations are capable of interbreeding but have differences in mating behaviors or rituals.

Front

What is temporal isolation?

Back

Temporal isolation happens when two species breed at different times, preventing them from mating even if they live in the same area.

Front

What is gametic isolation?

Back

Gametic isolation occurs when the sperm of one species cannot fertilize the eggs of another species, preventing hybridization.

Front

What is the role of ribose in nucleic acids?

Back

Ribose is a sugar component of RNA nucleotides, essential for the structure and function of RNA.

Front

What are amino acids?

Back

Amino acids are the building blocks of proteins, linked together by peptide bonds to form polypeptides.