Cell bio Exam #2

What is gene expression?

• Gene expression is the process of protein folding
• Gene expression is the process by which information from a gene is used in the synthesis of a functional gene product.
• Gene expression is the process of cell division
• Gene expression is the process of DNA replication

What is involved in the complex process of gene expression?

• Synthesis of lipids

• Synthesis of carbohydrates

• Synthesis of proteins and RNAs

• Synthesis of vitamins

What controls the timing and amount of protein production?

• DNA replication

• Cell division

• Regulation of gene expression

• Protein folding

What influences gene expression regulation allowing cells to adapt and function properly?

• Environmental signals

• Cell type

• Both environmental signals and cell type

• Genetic mutations

differentiated cells contain all the genetic instructions needed to direct the formation of a complete organism

• False
• Sometimes true
• Partially true
• True

What do specialized cell types in multicellular organisms contain in their DNA?

• Instructions to form a whole organism

• Instructions to form a single cell

• Instructions to form a specific tissue

• Instructions to form a specific organ

Cell types differ in organisms not because they have different genes, but because they express them (a)  

What proteins are common to all cells?

• Housekeeping proteins

• repair proteins

• ribosomal proteins

• RNA polymerase

Each cell type makes different sets of proteins thus they express different set of genes

• True

• False

Gene expression is regulated at many steps, from DNA to RNA to Protein. _____ is the most important mechanism

• Translational control

• Control of transcription initiation