Frederick Griffith Conducted Experiments Where Nonlethal Bacteria Acquired the Ability

question 23

Multiple Choice

Frederick Griffith conducted experiments where nonlethal bacteria acquired the ability to cause lethal pneumonia due to the presence of an unknown chemical. This chemical was later found to be

• A)RNA.
• B)a protein.
• C)DNA.
• D)nonhereditary material.
• E)phosphorus.

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Definitions:

Baby Blues

A common condition that affects new mothers, characterized by mild depressive symptoms and emotional instability, usually resolving within two weeks after childbirth.

Sudden Infant Death Syndrome

The unexplained death, usually during sleep, of a seemingly healthy baby less than a year old.

Breastfeeding

The act of feeding a baby with milk directly from a mother's breast, providing essential nutrients and immune support.

Pacifier

A rubber, plastic, or silicone nipple given to an infant to suck upon, apart from feeding, often used to soothe them.