What would be the result if the administration of a drug sequesters all the ATP in a cell?
A. Calcium will remain in the cytosol, continuously stimulating cross-bridge cycling.
B. Repeated, high-frequency action potentials will be fired at a skeletal muscle fiber causing sustained contraction.
C. Calcium-activated proteases degrade all proteins in skeletal muscle fibers, making muscles limp.
D. All cross-bridges will remain tightly bound to actin.
E. A build-up of K+ in T-tubules will cause constant, tetanic contractions of skeletal muscles.
Answer: D
You might also like to view...
Histologically, the epithelium of the alveoli includes which of the following structures?
(1) cornified epithelial cells (2) simple squamous epithelium, type I cells (3) septal, or surfactant, type II cells (4) bony trabeculae (5) roaming macrophages A) All of the above structures are included. B) None of the above structures are included. C) 2, 3, 5 D) 1, 4, 5 E) 1, 3, 5
Intrapleural pressure would suddenly _______ (increase or decrease?) if a person experiences a pneumothorax just as he/she completes normal expiration
Fill in the blank(s) with correct word
Ions are hydrophobic.
Answer the following statement true (T) or false (F)
The bone can supply calcium to the plasma by what process?
A) filtration B) reabsorption C) resorption D) ossification E) calcification