Academic Year Third Term. Biology Revision sheets

Transcription

1 Academic Year Third Term Biology Revision sheets Name: Date: Grade:9/ Part (A) Q1: Choose the letter of the choice that best answer the questions: 1. Which type of white blood cell has a specific defense for parasites? a. neutrophil b. basophil c. eosinophil d. macrophage 2. In an immune response, what is the main function of the circulatory system? a. to send chemical signals and transport immune cells b. to trap pathogens and attract phagocytes c. to stimulate infected cells and release interferons d. to produce inflammation and activate B cells 3. Which phrase best describes the function of a phagocyte? a. releases interferons b. sprays poison c. engulfs pathogens d. causes inflammation 4. Which of the following works to prevent viruses from reproducing in healthy body cells? a. antibodies b. interferons c. complement proteins d. antibiotics 1 P a g e

2 5. Immunity that protects an entire species from infection is a type of a. passive immunity. b. active immunity. c. acquired immunity. d. inherited immunity 6. Suppose you were eating an apple. Digestion of the apple would begin in your a. mouth. b. stomach. c. duodenum. d. jejunum. 7. The large intestine is one site for the absorption of a. fiber. b. sugars. c. water. d. fats. 8. Which phrase best describes absorption? a. takes up nutrients b. breaks down fats c. starts in the mouth d. acts mechanically 9. Which of the following functions is performed by the liver? a. balances fluids b. produces bile c. absorbs sugars d. distributes fats 10. What is the term for the millions of blood-filtering units inside the kidney? a. nephrons b. ureters c. cortexes d. medullas 11. The main role of the skin in the excretory system is to release a. amino acids and glucose. b. urea, plasma, and water. c. excess water and salt. d. surplus CO 2 and H 2O. 2 P a g e

3 12. Which of the following functions is performed by the kidneys? a. eliminate solid waste b. absorb most nutrients c. maintain proper ph d. digest food and water Part (B) Q2: Use the following Y diagram to comapre and contrast between mechanical and chemical digestion 3 P a g e

4 Q3: Use the diagram below to answer the following questions A. What is the main purpose of the digestive system? B. What separates the sections of the digestive system from one another? C. What types of mechanical digestion take place in the mouth, stomach, and small intestine? D. In which of the organs shown in Figure 32.3 does the digestion of protein begin? Name an enzyme that helps the body digest proteins. E. Name an organ that produces a substance that aids digestion in the small intestine. Predict which meal would take longer to digest, a meal high in fats or a meal high in carbohydrates. Explain. 4 P a g e

5 Q4: Use the diagram below to answer the following questions A. Write the name of the structure that stores urine. _ B. Structures 1, 2, and 3 make up what part of the kidney? _ C. Give two examples of substances removed from the blood by the kidneys. _ D. Give one example of how the organ and its parts shown in Figure 32.4 works to maintain homeostasis within the body. _ E. Name and describe a treatment for kidney failure. How often must the treatment be done? 5 P a g e

6 Q5: Match each term in column (A) with its definition in column (B) A B 1 digestion tube that connect the mouth to the stomach. 2 esophagus chemical substance that helps to digest the fats. 3 stomach semi liquid mixture. 4 chyme tube that carries the urine from the kidney to the bladder. 5 small intestine immunity without immune respond. 6 bile muscular sac that can stretch nearly twice. It continues the digestion which started in the mouth. 7 ureter immunity in which the body produces in respond of specific pathogen. 8 dialysis treatment in which the patient s blood is cleaned. 9 passive immunity the process by which the large complex molecules in food are broken down into smaller molecules 10 active immunity long narrow tube in which the most digestion takes place. Q6: Solve the following questions. A. How do phagocytes, antibodies and interferons help to fight pathogens? 6 P a g e

7 B. The main functions of the kidneys are to maintain fluid and chemical balances in the body. Explain how the structure of the kidney helps to carry out these function. C. Predict : if a person has his / her gallbladder removed. What changes in diet should be made? Why? Q7: Label following diagrams. 7 P a g e

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