Overview of Genetics "Case Study" Quiz - Micro

What is the primary function of a gene?

• To store energy in the form of ATP

• To code for the synthesis of proteins

• To replicate DNA during cell division

• To transport oxygen in the blood

What is the role of a gene when it is "expressed"?

• It is cut out from the DNA sequence

• It is activated indefinitely

• It is broken down before utilization

• It is utilized to produce a functional product, often a protein

Tags

NGSS.HS-LS1-1

How do proteins affect the body?

• They interact with chemicals to build structures and regulate functions

• They store genetic information

• They produce energy for cells

• They create DNA

Tags

NGSS.HS-LS1-1

What influences the activity of a protein?

• The genetic code of the organism

• The three-dimensional structure of the protein

• The number of chromosomes present

• The energy consumption rate

Tags

NGSS.HS-LS1-1

What process transcribes DNA into mRNA?

• Translation

• Mutation

• Transcription

• Replication

How does an operon control gene expression in prokaryotic cells?

• It degrades DNA to stop transcription

• It coordinates the expression of multiple genes through a single promoter and operator

• It synthesizes RNA directly from proteins

• It blocks all transcriptional activity

How can environmental factors influence gene expression?

• They can modify transcription factors, affecting whether a gene is expressed

• They permanently delete genes from DNA

• They change the DNA sequence itself

• They prevent any gene expression from occurring

Tags

NGSS.HS-LS3-2

How does DNA packing affect gene expression?

• Tightly packed DNA makes it harder for transcription factors to bind

• Loosely packed DNA prevents transcription

• Packing DNA causes it to mutate

• Packing DNA removes the genes permanently

What are the main components of an operon?

• DNA polymerase, ribosomes, and tRNA

• Structural genes, promoter, operator, and termination sequence

• Enhancers, exons, and introns

• mRNA, transcription factors, and ribosomes

Which part of an operon is responsible for initiating the process of transcription?

• It halts the transcription process

• It serves as the binding site for RNA polymerase to start transcription

• It encodes for regulatory proteins

• It degrades mRNA post-transcription