Describe a toxin that interrupts the crossbridge cycle and other uses for the toxin?
What will be an ideal response?
The bacterium Clostridium botulinum, which grows in food stored improperly, produces a toxin that
blocks acetylcholine release in neuromuscular junctions. These muscles are not able to contract. The
toxin is used for cosmetic treatment of wrinkles (the brand name for the product is Botox).
You might also like to view...
Protective (reverse) isolation would be appropriate for a patient:
A) infected with MRSA. B) with leukopenia. C) with pneumonic plague. D) with tuberculosis.
The nervous system develops enough to permit reflex actions during which period of development?
A. fetal, months 3-4 B. embryonic, weeks 2-3 C. embryonic, weeks 4-5 D. embryonic, weeks 6-8 E. pre-embryonic
The interaction between different species is
a. mutualism. b. parasitism. c. commensalism. d. competition. e. predation.
Which of the following is not an adaptation to bipedalism in early hominids?
a. curvature of the spine b. shorter pelvis c. alignment of the big toes with the rest of the toes d. decrease in the length of the legs relative to the arms e. moving the foramen magnum to the base of the skull