Try the multiple choice questions below to test your knowledge of Chapter 5. Once you have completed the test, click on 'Submit Answers for Grading' to get your results.

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This activity contains 10 questions.

	Which of the following is not a presumptive test for blood?   The leuco-malachite green test. The acid phosphatase test. The luminol test. The Kastle-Meyer test.

	A false positive result is best described as one that is given:   when the substance being tested for is present in minute quantities. when the substance being tested for is present in large amounts. when the substance being tested for is absent. by a substance other than that being tested for.

	Antiserum is:   blood serum in which antigens and antibodies are both absent. blood serum containing specific antibodies. blood serum containing a mixture of antigens and antibodies. blood serum containing specific antigens.

	In the ABO system, blood group ‘O’ is characterised by the:   the absence of both antigen A and antigen B. the presence of antigen O. presence of antigen A and the absence of antigen B. the presence of both antigen A and antigen B.

	The percentage of the human population classed as secretors (in which antigens are found in non-blood body fluids such as urine, saliva and semen) is:   80% 50% 20% 40%

	Bloodstains that are made to travel by a force other than that of gravity may be defined as:   transfer bloodstains. passive bloodstains. velocity bloodstains. active bloodstains.

	Bloodstains known as cast-off bloodstains are created when:   blood is flung off a blood-soaked object, e.g. a weapon, as a result of its movement or a sudden cessation in its movement. blood-stained clothing is discarded. blood drips onto a horizontal surface such as a floor. blood is transferred to a surface by direct contact, e.g. a footprint on the ground.

	Which one of the following statements is true?   A satellite bloodstain is usually larger than its parent. The tail of a satellite bloodstain points in the same direction as that of its parent. The tail of a satellite bloodstain points in the opposite direction to that of its parent. The direction of travel of a satellite bloodstain is different from that of its parent.

	The condition characterised by the absence of sperm cells in the seminal fluid is known as:   azoospermia. oligospermia. hyperspermia. hypospermia.

	Which of the following is not a presumptive test for the detection of semen?   Microscopic examination. The p30 test. The acid phosphatase test. The phenolphthalein test.

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