A person with a lesion in the brain exhibited the following manifestations: normal tension in skeletal muscle, disturbed fine motor control, exhibited tremors when reaching for objects. What part of the brain is most likely damaged?
A. The basal ganglia
B. The frontal lobe of the cerebrum
C. The prefrontal lobe of the cerebrum
D. The cerebellum
E. The pyramids of the medulla oblongata
Answer: D
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Which enzyme system allows for regulation at a single site and also diminishes the chance that a needed substrate will diffuse away from a catalyst?
A. Metabolic pathway B. Multienzyme complex
The term for the stoppage of blood flow is ________.
A. homeostasis B. hemosclerosis C. hemothrombus D. hemostasis
Interaction between individual polypeptide chains to form a protein complex is ________ structure
A) primary B) secondary C) tertiary D) quaternary E) pentagonal
How would a drug that blocks acetylcholine receptors at the motor end plate affect skeletal muscle?
A) It would make the muscles more excitable. B) It would produce uncontrolled muscle spasms. C) It would cause spastic paralysis (muscles are contracted and unable to relax). D) It would cause flaccid paralysis (muscles are relaxed and unable to contract). E) It would have little effect on skeletal muscles.