The cells responsible for cellular immunity are the _____ cells a. B b. plasma c

Question

The cells responsible for cellular immunity are the _____ cells a. B b. plasma c. NK cells d. cytotoxic T e. suppressor B _____ Immunity results from antibodies that pass the placenta from mother to fetus a. active b. natural passive c. passive d. auto e. innate Antigens a. are foreign substances introduced into the body b. can be molecules produced by the body cells c. stimulate an adaptive immune system response d. may be pollens e. all are correct During an asthma attack, a person has difficulty breathing because of constriction of a. trachea b. alveoli c. respiratory membrane d. terminal brochioles e. bronchi The only antibodies that normally cross the placenta during fetal are of a. IgA b. IgD c. IgE d. IgG e. IgM B cells are primarily activated by the activities of except a. antigens b. antibodies c. helper T cells d. macrophages e. plasma cells Each of the following is a physical barrier to infection except a. body hair b. epithelium c. secretions d. fever e. basement membranes The secondary antibody response a. is faster than the primary response b. produces less antibodies than the primary response c. is cause by antigens d. both a and b d. both a and c The largest percentage of antibodies in the blood are a. IgA b. Ig D c. IgE d. IgG e. IgM When blood glucose levels fall a. insulin is released b. glucogan is released c. all cells will release more glucose d. cellular respiration increases e. both a and b The type of lymphocytes that is responsible for the secondary antibody response is the a. memory B cell b. B cell c. T cell d. helper T cell e. both b and c The enzyme amylase digests a. carbohydrates b. proteins c. lipids d. nucleic acids. e. all are correct Carbohydrate digestion starts in the _____ and ends in the _____ a. mouth/duodenum b. stomach/large intestines c. stomach/small intestine d. mouth/stomach e. mouth/small intestines The walls of the digestive system have the following layers outside to in: a. serosa, muscularis, submucosa, mucosa. b. mucosa, submucosa, muscularis, serosa. c. serosa, submucosa, mucosa, muscularis externa. d. submucosa, mucosa, muscularis, serosa. e. mucosa, serosa, muscularis, submucosa. Which of the following muscles are directly involve in respiration? a. diaphragm

Explanation / Answer

24) The cells responsible for cellular immunity are cytotoxic T cells (option D). B cells are responsible for humoral immunity. Natural killer cells are antigen presenting cells.

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