Which of the following cavities has the highest density of cardiac muscle tissue?

A) thoracic cavity B) cranial cavity C) abdominal cavity D) pleural cavity


Answer: A

Biology & Microbiology

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How are the tails and heads of membrane phospholipids oriented in their environment?

A. The hydrophobic heads are oriented towards each other and the hydrophillic tails are oriented towards the extracellular fluid and the intracellular fluid. B. The hydrophillic tails are oriented towards each other and the hydrophobic heads are oriented towards the extracellular fluid and the intracellular fluid. C. The hydrophobic tails are oriented towards each other and the hydrophillic heads are oriented towards the extracellular fluid and the intracellular fluid. D. The hydrophillic heads are oriented towards each other and the hydrophobic tails are oriented towards the extracellular fluid and the intracellular fluid.

Biology & Microbiology

Which of the following activities in the roots does not require energy?

A. transport of solutes into the cytoplasm B. making specific nutrients in the soil available to the root C. supporting symbiotic relationships with soil microorganisms D. absorbing water into the root hair E. All root activities require energy.

Biology & Microbiology

Which antimicrobic does not inhibit cell wall synthesis?

A. gentamicin B. penicllins C. clavamox D. cephalosporins E. vancomycin

Biology & Microbiology

During the cell cycle, DNA replication occurs during

metaphase interphase anaphase prophase telophase

Biology & Microbiology