Part 01 STAAR Biology Review

Front

What is the genetic basis of coat-color variation in Texas Longhorn cattle?

Back

Differences in the nucleotide sequences of genes.

Front

What type of mutation is represented by the addition of one or more nucleotide bases in a DNA sequence?

Back

An insertion mutation.

Front

How do DNA molecules express the genetic information they contain?

Back

By directing the process of protein synthesis.

Front

How does a virus replicate?

Back

A virus enters a host cell and uses the materials from the host cell to produce new virus particles.

Front

What amino acids do the codons AUG and AAA code for in birds?

Back

Methionine and Lysine.

Front

What is a mutation?

Back

A change in the nucleotide sequence of DNA.

Front

What is homeostasis?

Back

The process by which living organisms maintain a stable internal environment.

Front

What role do proteins play in living organisms?

Back

Proteins perform a variety of functions including catalyzing biochemical reactions, providing structural support, and regulating processes.

Front

What is the function of ribosomes in cells?

Back

Ribosomes are the sites of protein synthesis.

Front

What is the central dogma of molecular biology?

Back

DNA -> RNA -> Protein.