Staar Practice

Front

What are mutations and why are they important?

Back

Mutations are changes in the DNA sequence of an organism. They are important because they bring about genetic variation needed for a population to evolve.

Front

What is a ribosome?

Back

A ribosome is a cellular structure that makes protein for the cell. Ribosomes can be found in both prokaryotic and eukaryotic cells.

Front

What is the advantage of having different shaped beaks in birds?

Back

The advantage of having different shaped beaks is to be able to eat the food readily available in the environment.

Front

What is taxonomy?

Back

Taxonomy is the science of describing, classifying, and naming living things.

Front

What is the function of ribosomes in a cell?

Back

Ribosomes make protein for the cell.

Front

Define genetic variation.

Back

Genetic variation refers to the differences in DNA sequences among individuals within a population, which is essential for evolution.

Front

What is the Hardy-Weinberg equilibrium?

Back

The Hardy-Weinberg equilibrium is a principle that describes the genetic variation in a population that is not evolving.

Front

What are prokaryotic cells?

Back

Prokaryotic cells are simple, single-celled organisms that lack a nucleus and membrane-bound organelles.

Front

What are eukaryotic cells?

Back

Eukaryotic cells are complex cells that contain a nucleus and membrane-bound organelles.

Front

Explain the role of the endoplasmic reticulum.

Back

The endoplasmic reticulum is an organelle that helps in the synthesis of proteins and lipids.