Semester Exam Review Unit 4 Flashcardizz

Front

What is gene expression?

Back

Gene expression is the process by which information from a gene is used to synthesize a functional gene product, typically a protein.

Front

True or False: Gene expression is solely determined by genes and is not impacted by the environment.

Back

False

Front

Why do stomach cells function differently than skin cells?

Back

Different types of cells simply use different genes contained in the DNA.

Front

What is a substitution mutation?

Back

A substitution mutation is a type of mutation where one base pair in the DNA sequence is replaced by another.

Front

Identify the mutated DNA sequence that demonstrates a substitution mutation: Original DNA: AAT - GCC. Mutated DNA: ATT - GCC, AAT - GGC - C, AAG - CC, AAT - TGC - C.

Back

Mutated DNA: ATT - GCC.

Front

What happens when gene expression occurs?

Back

The gene is activated and used in protein synthesis.

Front

What is recombinant DNA?

Back

Recombinant DNA is DNA that has been formed artificially by combining constituents from different organisms.

Front

What role does the environment play in gene expression?

Back

The environment can influence gene expression by affecting how genes are turned on or off.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an organism, while phenotype is the observable characteristics resulting from the genotype.

Front

What is the function of proteins in the body?

Back

Proteins perform a variety of functions including catalyzing metabolic reactions, replicating DNA, responding to stimuli, and transporting molecules.