Microbiology: An Introduction
Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Chapter 16, Problem 7MCQ

In 1884. Elie Metchnikoff observed blood cells collected around a splinter inserted in a sea star embryo. This was the discovery of

  1. a. blood cells.
  2. b. sea stars.
  3. c. phagocytosis.
  4. d. immunity.
  5. e. none of the above
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A person who has received a vaccine for human papillomavirus (HPV), which causes genital warts and can cause cervical cancera. is able to produce antibodies against HPV.b. is more susceptible to HPV than someone who has not had the vaccine.c. has nonspecific immunity against HPV.d. must already been infected with HPV. Which of the following leukocytes can be classified as lymphocytes?a. B cellsb. T cellsc. Natural killer cellsd. all of the above
Sponges display nonspecific immunity. In an experiment, the cells of two different sponges were mixed and placed within a petri dish. The cells from each sponge sorted and arranged themselves together according to organism. What does this characteristic demonstrate?   A. Sponges have memory T-cells and share a more recent common ancestor with vertebrates than other invertebrates. B. The experiment provides evidence for the speed of evolution and the use of specific immunity within the organism. C. Sponges have an ability to recognize their own cells as a characteristic of acquired immunity. D. Sharing genetic information from cell to cell is possible by means of receptors and protein-lined pits.
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