How Do Viability Stains Usually Distinguish Between Living Cells and Dead

question 56

Multiple Choice

How do viability stains usually distinguish between living cells and dead cells?

• A) The chemical fluoresces only when bound to ribosomes that are actively synthesizing proteins.
• B) The chemical stain is taken up by living cells and once metabolized becomes fluorescent.
• C) The dye specifically targets intact cytoplasmic membranes.
• D) The dyeʹs fluorescence is quenched by dead cells.

Describe the base-pairing rules and their importance in DNA structure and function.

Comprehend the concept of DNA replication models and their experimental verification.

Recognize the significance of having multiple origins of replication in eukaryotic chromosomes for efficient DNA replication.

Describe the role of telomeres and telomerase in chromosome stability and cell aging.

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Definitions:

Topographically Incompatible

Refers to behaviors that cannot occur simultaneously because the performance of one behavior physically restricts the other.

Differential Reinforcement

A technique in behavior therapy focusing on reinforcing desired behaviors while withholding reinforcement for undesired behaviors.

Target Behavior

A specific behavior selected for change or intervention, often identified in behavioral assessments.

Stimulus

An event, item, or occurrence that provokes or elicits a specific functional reaction in an organism.