What lever class has the fulcrum situated between the force and the load?
A) first-class lever B) second-class lever C) third-class lever D) fourth-class lever
Answer: A
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Which muscle attaches to the manubrium and thyroid cartilage and aids in singing low notes?
A. Omohyoid B. Thyrohyoid C. Sternothyroid D. Stylohyoid E. Lateral pterygoid
cAMP activates ________, which catalyzes the ________ of other enzymes in the cytoplasm.
A. protein kinase; phosphorylation B. calmodulin; hydrolysis C. tyrosine kinase; hydrolysis D. calcium; phosphorylation
Cells that lack ribosomes cannot
A. ingest and phagocytize bacteria. B. produce energy. C. eliminate wastes. D. package cellular products. E. engage in protein synthesis.
Which types of connections allow epithelial cells to form strong membranes?
A. Keratinized B. Basement membranes C. Junctional complexes D. Intercalated discs