Describe the experiment performed by Ivan Pavlov that helped support the idea of classical conditioning.
What will be an ideal response?
Ivan Pavlov observed that dogs salivate when they are presented with food. He ran a bell whenever the dogs were fed. Eventually the dogs would salivate when the bell was rung regardless of whether food was present or not. The dogs were trained to associate a response to a stimulus.
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Charles Chamberland developed porcelain filters that allowed other scientists to demonstrate that viruses are smaller than bacteria.
Answer the following statement true (T) or false (F)
What is true in translocation heterozygotes?
A) At the borders of translocations, genes that are normally located on different homologs appear to be linked. B) Fertility is reduced because only alternate segregation results in balanced gametes. C) The translocation chromosome is used as a balancer because it cannot cross over with a normal chromosome. D) Crossing over between normal and translocation chromosomes results in an inversion.
In the classification of organisms, a phylum is subdivided into
A) orders. B) kingdoms. C) tribes. D) genera. E) classes.
Select the best response to the question. ? ?Which of the following is NOT a method of classifying antibacterial medications?
A) broad spectrum versus narrow spectrum B) mechanism of action C) bacteriostatic versus bactericidal D)aerobic versus anaerobic