If a cell lacked lysosomes, it would not be able to

A) digest cellular wastes and bacteria.
B) transport water-soluble molecules.
C) synthesize lipids.
D) destroy H2O2.
E) produce enzymes.


A) digest cellular wastes and bacteria.

Anatomy & Physiology

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RBC is the abbreviation for ________

A) Red blood cells B) Red and blue circulation C) Ruptured blood clot D) Really bad cut

Anatomy & Physiology

To initiate a smooth muscle cell contraction, calcium enters the cell and binds to

A.   troponin, which then activates myosin light-chain kinase. B.   calmodulin, which then binds to and activates myosin light-chain kinase. C.  a myosin head, which then activates calmodulin. D.   myosin light-chain kinase, which then hydrolyzes ATP. E.  a  phosphatase, which then removes the tropomyosin blockade.

Anatomy & Physiology

Action potentials are generated by ion movements through

A. chemically regulated gates. B. active ion pumps. C. leakage ion channels. D. voltage-regulated gates.

Anatomy & Physiology

When the inspiratory muscles relax, the rib cage returns to its original position as a result of

A) exhalation. B) gravity. C) elastic rebound. D) accessory muscle contraction. E) partial pressure difference.

Anatomy & Physiology