What Is the "Double Helix" When Referring to the Structure

question 98

Multiple Choice

What is the "double helix" when referring to the structure of DNA?

• A) two strands of linked nucleotides that are twisted around each other
• B) two strands of linked nucleotides that fold back and forth like an accordion
• C) four strands of linked nucleotides that are bound by phosphate groups
• D) four strands of linked nucleotides that are bound by sugar groups
• E) two chromosomes that twisted around each other

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Definitions:

Consumed Tag

In industrial automation, a tag or variable from one device that is used or read by another device across a network.

Produced Tag

A label or identifier in a control system that represents data or a status generated by one device and made available to others.

Structure-Type Tag

In PLC programming, it refers to user-defined data types that allow the grouping of multiple related variables under a single name.

Data Types

Represent the kinds of values and how they are stored in memory by a programming language.