Which is incorrect about parvoviruses?
A) They cause a disease known as fifth disease
B) They cause several diseases in dogs, cats and other mammals
C) They are single-stranded DNA viruses
D) Parvovirus B19 causes erythema infectiosum
E) They cannot be transmissible to the fetus
E) They cannot be transmissible to the fetus
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The source of glucocorticoids is the
a. pituitary gland. b. adrenal cortex. c. adrenal medulla. d. thymus gland. e. thyroid gland
The infoldings of the inner mitochondrial membrane are called
a. cisternae. b. cristae. c. laminae. d. lacunae.
Frederick Griffith did experiments on genetic transformation. Which of the following statements about his experiments is accurate?
a. Griffith used only pathogenic bacteria in his experiments. b. The combination of living nonencapsulated bacteria and heat-killed encapsulated bacteria did not cause disease. c. Griffith used bacteria in which the nonpathogenic strain was encapsulated but the pathogenic strain was not. d. Griffith found that DNA released from dead (virulent) bacteria entered live (avirulent) bacteria and changed them genetically, causing them to become virulent.
All proteins are enzymes.
Answer the following statement true (T) or false (F)