Biology STAAR 2023

Front

What is an adaptation in biology?

Back

An adaptation is a characteristic or trait that has evolved in a species to help it survive and reproduce in its environment.

Front

What is the habitat of the axolotl salamander?

Back

The axolotl salamander primarily lives in lakes.

Front

What is the habitat of the tiger salamander?

Back

The tiger salamander typically lives on land near fresh water.

Front

What plant response helps maximize water retention during a drought?

Back

Decreasing stem and leaf growth while increasing root growth helps a plant retain water during drought.

Front

What is achondroplasia?

Back

Achondroplasia is a genetic condition characterized by abnormal bone growth, leading to dwarfism.

Front

What is the inheritance pattern of achondroplasia?

Back

Achondroplasia is inherited in a dominant manner, meaning only one copy of the dominant allele is needed for the trait to be expressed.

Front

What percentage of children will have achondroplasia if one parent is homozygous dominant and the other is homozygous recessive?

Back

100% of the children will have achondroplasia.

Front

What determines the amino acids that make up a protein like albumin?

Back

The sequence of nucleotides in DNA determines the amino acids that are combined to create proteins.

Front

What is the role of albumin in the body?

Back

Albumin is a protein that helps maintain osmotic pressure and transports substances in the bloodstream.

Front

What type of relationship exists between sweet corn and the fungus Ustilago maydis?

Back

The relationship is best described as parasitism, where the fungus extracts nutrients from the corn.