General Biology II Homework & Animal Immune System and Reproduction does our ada
ID: 132469 • Letter: G
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General Biology II Homework & Animal Immune System and Reproduction does our adaptive immune systiom learn how to toleratc its own antigens a. By producing natural kilker cells that will destroy "rogue" T cells b. By testing mature T and B cells and destroying those which fail the test c. Hy only producing T and B cells with antigen receptors that will not bind with its own antigens d. Through the use of the innate inflammatory system. When a mcasles epidemic hits, which group of people would have a faster and stronger secondary respone to this pathogen? a. People who have not had the measles or a mcaske vaccine b.Infants and pcople with compromised immune systems e. People who have previously had measles or the measles vaccine d.People who lack T cells but not B cells. 10 Asexual reproduction that involves the development of a new individual from an unfertilized egg is called c. budding 12 In animals, the term ovulation refers to a the relcase of mature eggs b. the fertilization of an cmbryo c. the production of mature eggs d. release of uterian oocytes 13 Which type of fertilization is associated with higher zygote survival? a. external fertilization b. internal fertilization C. d. budding 14 In mammals, eggs are released into a. the gonads b. the oviduct c. the vagina d. the uterus Which of the following 4 contraception methods is the most effective in humans (mcaning that it has the lowest pregnancy rate)? a. birth control pills b. condoms c. intra-uterine device d. natural family planning 15Explanation / Answer
9. C. immunological tolerance to the body's own antigens aka self-antigens is achieved by preventing the production of functional B-cells and T-cells reactive to these types of antigens.
10. C. people who previously had measles or got vaccinated usually produce strong secondary response because they have Antibody in the memory cells of the immune system, which reacts fast and strongly to these measles antigens.
11. D. Parthenogenesis is a form of agamogenesis, in which an unfertilized egg matures into a new individual.
12. A. ovulation refers to the release of a mature egg from the ovary, into the oviduct and finally into the uterus where it might get fertilized.
13. B. Internal fertilization has higher zygote survival rate than other methods.
14. B. the eggs are released from the ovaries (Gonads) into the oviduct.
15. C. intra-uterine devices gives best contraception, only 1 out of 100 fails.
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