The Structure of DNA Is Best Described as

question 4

Multiple Choice

The structure of DNA is best described as

• A)a single chain twisted around itself.
• B)a random mixture of deoxyribose,phosphate,adenine,guanine,thymine and cytosine.
• C)two complementary chains of nucleotides held together by hydrogen bonds.
• D)two chains of phosphate and ribose wound in a double helix.
• E)a backbone of nucleotide bases with phosphate and deoxyribose molecules attached.

Identify signs of specific pediatric conditions based on physical appearance and growth patterns.

Recognize normal physiological changes associated with aging.

Interpret vital measurements (e.g., head and chest circumferences) in infants and recognize when referral is necessary.

Identify physical positions indicative of specific health issues, such as respiratory difficulties.

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Definitions:

Secondary Reinforcer

A stimulus that becomes reinforcing through its association with a primary reinforcer.

Gold Star

A symbol of commendation or recognition for outstanding achievement or quality.

Primary Reinforcer

A stimulus that satisfies basic survival needs and is inherently rewarding, such as food, water, or shelter, which does not require learning to be effective.

Secondary Reinforcer

A conditioned reinforcer that gains its reinforcing power through its association with a primary reinforcer; examples include money, grades, or tokens.