Because the heart beats continuously, cardiac fibers never relax completely.

Answer the following statement true (T) or false (F)


False

Cardiac fibers relax completely between contractions, which prevents fatigue.

Biology & Microbiology

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Which of the following is not a strategy that bacteria use to resist the action of antibiotics?

A. Altering cell membrane structure to prevent antibiotic influx. B. Cleavage of a key structural component of the antibiotic.  C. Modification of the antibiotic by the acetylation or phosphorylation. D. All of the choices are correct.

Biology & Microbiology

Similarity in evolutionarily unrelated groups due to adaptation to similar environments is called

A. concentric evolution. B. convergent evolution. C. biogeographic evolution. D. Hardy-Weinberg equilibrium. E. both biogeographic and convergent evolution.

Biology & Microbiology

Which of the following is an anaerobic pathway?

a. chemiosmosis b. fermentation c. citric acid cycle d. aerobic respiration e. electron transport chain

Biology & Microbiology

Algae can have different types of photosynthetic pigments that allow them to photosynthesize at various depths in water.

Answer the following statement true (T) or false (F)

Biology & Microbiology