The Two Chains of Nucleotides in a DNA Molecule Are

question 22

Multiple Choice

The two chains of nucleotides in a DNA molecule are held together by:

• A)covalent bonds.
• B)ionic bonds.
• C)hydrogen bonds.
• D)peptide bonds.
• E)hydrophobic interactions.

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Definitions:

Defence Mechanisms

Psychological strategies brought into play by individuals or the ego to protect against anxiety or social sanctions and to provide a refuge from a situation with which one cannot currently cope.

Skinner

B.F. Skinner, an influential American psychologist known for his work in behaviorism and the development of the theory of operant conditioning.

Psychosexual Stages

A series of developmental stages proposed by Freud, through which a child's personality develops, each characterized by the focus of libido on a different area of the body.

Freud

Sigmund Freud was an Austrian neurologist who founded psychoanalysis, a method for treating psychopathology through dialogue between a patient and a psychoanalyst.