Which of the following represents the proper order of events in embryonic development?
A. fertilization, gastrulation, neurulation, cleavage, organogenesis
B. fertilization, cleavage, gastrulation, organogenesis, neurulation
C. fertilization, cleavage, gastrulation, neurulation, organogenesis
D. fertilization, gastrulation, cleavage, neurulation, organogenesis
E. fertilization, gastrulation, cleavage, organogenesis, neurulation
C. fertilization, cleavage, gastrulation, neurulation, organogenesis
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Provide at least two types of evidence that support the endosymbiont theory. What will be an ideal response?
Prescription drugs such as Prozac help maintain higher levels of serotonin in the brain. What effect will this have on an individual?
A) It will act as an antidepressant because a lack of serotonin is considered a cause of depression symptoms. B) It will act to suppress impulsive behavior because too much serotonin causes children to act out. C) It will cause a patient to be sleepy because serotonin is essential to a good night's sleep. D) It will cause tetany due to an overproduction of acetylcholine.
Which of the following could result in the wrong patient diagnosis and improper treatment?
A) using a cotton tip swap to collect a suspected pathogen B) carefully sampling only the site in question without touching other body structures or surface sites C) wearing gloves D) quickly sealing samples in containers E) proper hand washing before and after specimen collection
Infections caused by Staphylococcus aureus include all the following except
A. folliculitis. B. furuncles and carbuncles. C. sore throat. D. osteomyelitis. E. pneumonia.