Biology I

Biology II

General Microbiology

Introduction to Biology

Nutrition

Leslie has a bad sore throat, and the lymph glands in her neck are swollen. This would indicate that 84) A) the lymph gland is actively producing phagocytes. B) the aﬀected lymph glands contain an increased number of lymphocytes. C) the lymph gland has increased its secretion of thymosin. D) lymph is not ﬂowing through these lymph glands. E) the focus of the infection is the lymph glands. Answer: B In an experimental situation, a rabbit is exposed to a viral antigen to which it makes antibodies. These antibodies are then puriﬁed and injected into a human with the same viral disease. This is an example of 117) A) innate immunity. B) active immunization. C) natural immunity. D) passive immunity. E) alloimmunit y. Answer: D Harry suﬀers from cystic ﬁbrosis and has severe breathing diﬀiculties. His problems result from 48) A) production of thick secretions that are diﬀicult to transport. B) uncontrollable laryngospasms. C) inability of the respiratory defense mechanism to transport mucus. D) inability of the respiratory defense mechanism to transport mucus and production of thick secretions that are diﬀicult to transport E) All of the answers are correct. Answer: D If a patient being tested inhales as deeply as possible and then exhales as much as possible, the volume of air expelled would be the patient's 136) A) vital capacity. B) inspiratory reserve volume. C) expiratory reserve volume. D) reserve volume. E) tidal volume. Answer: A If you looked closely at a pulmonary lobule, you would see all of the following structures except 146) A) a branch of a pulmonary vein. B) some elastic ﬁbers. C) alveolar ducts. D) cartilage plates. E) a lymphatic vessel. Answer: D

BIOL | 1322 | Nutrition | study guides | Leslie has a bad sore throat  

Chapter 20 Immunity- body’s ability to fight against pathogen Lymph= portion of interstitial fluid Lymphocytes= NK, helper T cells, cytoxic T cells, G cells Various types of macrophages are derived from 118) A) eosinophils. B) basophils. C) lymphocytes. D) neutrophils. E) monocytes. Answer: E T cells= cell mediated immunity B cells= antibody mediated immunity B cells production of antibodies= IgG, IgE, IgA Immunoglobulins that are most abundant and are responsible for resistance against many viruses, bacteria, and bacterial toxins are 88) A) IgA. B) IgD. C) IgE. D) IgG. E) IgM. Answer: D Most abundant white blood cells= neutrophils The first line of cellular defense against pathogens are the 71) A) T cells. B) B cells. C) plasma cells. D) NK cells. E) phagocytes. Answer: E Phagocytosis= Allergies involves Inappropriate or excessive immune responses to antigens are 60) A) allergies. B) the result of stress. C) autoimmune diseases. D) signs of a weak system. E) immunodeficiency diseases. Answer: A allergies associated with neutrophils and eosinophils An allergen circulating in the bloodstream affects mast cells throughout the body, dropping blood pressure to dangerously low levels. This response is termed 95) A) asthma.

BIOL | 1322 | Nutrition | study guides | Chapter 20 Immunity- body’s ab

External respiration involves the 24) A) movement of air into and out of the lungs. B) binding of oxygen by hemoglobin. C) diffusion of gases between the alveoli and the circulating blood. D) utilization of oxygen by tissues to support metabolism. E) exchange of dissolved gases between the blood and the interstitial fluid. Answer: C The process by which dissolved gases are exchanged between the blood and interstitial fluids is 40) A) external respiration. B) pulmonary ventilation. C) breathing. D) cellular respiration. E) internal respiration. Answer: E Contraction of the diaphragm= diaphragm move up= breath in= pressure inside the decrease Air moves out of the lungs when the pressure inside the lungs is 10) A) greater than the pressure in the atmosphere. B) less than intrapulmonic pressure. C) equal to the pressure in the atmosphere. D) greater than intraalveolar pressure. E) less than the pressure in the atmosphere. Answer: A When the diaphragm and external intercostal muscles contract, 98) A) the volume of the lungs decreases. B) expiration occurs. C) the volume of the thorax decreases. D) the lungs shrink. E) the volume of the thorax increases. Answer: E Explanation: Diseases= Pneumonia= inflammation of the lungs Asthma= Asthma is 47) A) an obstructive tumor. B) an acute condition resulting from unusually sensitive, irritated conducting airways. C) caused by Mycobacterium tuberculosis . D) a collapsed lung. E) characterized by fluid buildup in the alveoli. Answer: B Explanation:

BIOL | 1322 | Nutrition | assessment | External respiration involves 

1. Breastfeeding can help mothers lose some of their pregnancy weight after giving birth. Answer: TRUE Page Ref: 643 Skill: Remembering Learning Obj.: 16.8 2. Exercise and physical activityis not recommended while pregnant. Answer: FALSE Page Ref: 641, 642 Skill: Remembering Learning Obj.: 16.2 3. During pregnancy, women cannot safely consume any fish or fish products. Answer: FALSE Page Ref: 645 Skill: Remembering Learning Obj.: 16.4 4. Vitamin B 12 is efficiently absorbed during pregnancy. Answer: TRUE Page Ref: 647 Skill: Remembering Learning Obj.: 16.4 5. Vitamin A supplementation during pregnancy can cause birth defects. Answer: TRUE Page Ref: 647 Skill: Remembering Learning Obj.: 16.4 6. The RDA for vitamin D does not increase during pregnancy. Answer: TRUE Page Ref: 647 Skill: Remembering Learning Obj.: 16.4 7. During pregnancy, it is difficult for many women to obtain adequate iron from diet alone. Answer: TRUE Page Ref: 648 Skill: Remembering Learning Obj.: 16.4 8. There are few ways that fathers and siblings can bond with an infant while it is very young. Answer: FALSE Page Ref: 665 Skill: Understanding Learning Obj.: 16.8

BIOL | 1322 | Nutrition | assessment | 1. Breastfeeding can help moth

 Quiz 1291.The pituitary hormone that promotes

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