Botulinum toxin- A toxin produced by the bacterium Clostridium botulinum.Known for sometimes lethal poisoning from infected meat products. In modern controlled medical or cosmetic use, the very same toxin is known as Botox.Tetanus toxin- Another very potent neurotoxin produced by Clostridium tetani.Strichnine- A highly poisonous alkaloid produced by the Strychnos nux-vomica tree,historically used to kill rats and other pests.In contrast to these toxins, strychnine acts postsynaptically, to block glycine from binding to receptors on motor neurons. Would you expect the symptoms of strychnine poisoning to be more similar to those of botulinum or tetanus toxin?
A. Tetanus toxin
B. Botulinum
Answer: A
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Chromosome number is reduced during meiosis because the process consists of
a. two cell divisions without any chromosome replication. b. a single cell division without any chromosome replication. c. two cell divisions in which half of the chromosomes are destroyed. d. two cell divisions and only a single round of chromosome replication. e. four cell divisions with no chromosome replication.
The flow of which of the following into the mitochondrial matrix provides the chemiosmotic energy for the synthesis of ATP?
(A) Inorganic phosphate (B) ADP (C) Glucose (D) Protons
Diploid means having
What will be an ideal response?
Living things that live in the polar ice biome include
A) mosses, lichens, seals, and polar bears. B) penguins, seals, moose, and springtails. C) mosses, ferns, gulls, and penguins. D) lichens, jaguars, gulls, and polar bears.