If a Mixture of Bacteriophages, Some Labeled with Radioactive Sulfur

question 58

Multiple Choice

If a mixture of bacteriophages, some labeled with radioactive sulfur and others labeled with radioactive phosphorus, is placed in a bacterial culture, the bacteria will eventually contain

• A) radioactive sulfur.
• B) radioactive phosphorus.
• C) both radioactive sulfur and phosphorus.
• D) neither radioactive sulfur nor radioactive phosphorus.
• E) complete viruses with radioactive sulfur coats.

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Definitions:

Lactate

A compound produced during anaerobic metabolism, often used by muscles as an energy source during intense exercise.

Actin Myofilament

Actin myofilaments are thin filaments composed of the protein actin and are essential components of the cytoskeleton and muscle contraction.

Myosin Myofilament

A type of protein filament in muscle cells responsible for muscle contraction, part of the thick filaments in myofibrils.

Sarcomere

The basic unit of a muscle's cross-striated myofibril, responsible for muscle contraction.