3 I 4 . 3 1 THE SEARCH FOR LIFE CONTINUES Scientists have identified two similar molecules as water-like candidates to search for on other planets: methane and methanol. Answer the questions below, to help explain the importance of the investigation. Methane, CH, Methanol, CH,0 H. H. H-C-H H-C- H. 24. List three properties scientists should observe or measure for these substances. 25. Explain your choices from #24: how do these properties relate to a substance's importance for life? 26. What results should scientists see for each of these properties if the substance is similar to water? 27. Which substance, methane or methanol, do you think would show the results you predicted in #26?

A number of compounds have been selected as possible unknowns for this experiment. They are listed (arabinose, fructose, galactose, glucose, lactose ,maltose, mannitol, ribulose, starch, sucrose, xylose) Consider the structures of each unknown . The first two answer (in the box) have been done as examples The answer is made by taking the number in the box and choosing the correct answer Start mannitol Molisch Test (+) arabinose, fructose, galactose, glucose, lactose, maltose, ribulose, starch, sucrose, xylose (+) 1 Iodine/KI Test (-) 3 Benedict's Test (+) 4 (-) 5 Barfoed's Test (+) 6 (+) Seliwan. Test 8 Bial's Test Bial's Test (-) (+) (-) (+) 10 11 12

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This pre-analytical variable can have an effect on chemistry tests which are read visually by spectrophotometry:   Question 8 options:   all answers are correct   icterus   lipemia   hemolysis

Tumor markers can be produced directly by the tumor or released as a result of tissue damage by the growing tumor.   Question 2 options:   True   False

13. Some fungi live as single-celled organisms. Group of answer choices True False 14. For a fungus, a fruiting body such as a mushroom serves which function? Group of answer choices Allowing asexual reproduction by fragmentation Spreading spores produced during sexual reproduction Causing disease by consuming tissues in an animal host Storing nutrients as a permanent organ in the fungus Question 15 What sort of diseases can be treated with antibiotics? Group of answer choices Cancers Diseases caused by viruses Diseases caused by fungi Diseases caused by bacteria Question 16 Which of the following is an example of a bacterium causing harm to another organism? Group of answer choices Tuberculosis in humans caused by Mycobacterium tuberculosis Protozoa in the genus Plasmodium causing malaria in humans Fungi in the genus Penicillium producing penicillin that kills nearby bacteria The ghost plant Monotropa uniflora stealing nutrients from fungi NOV 14 MacBe esc 80 O00 000 F1 F2

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Neonatal bilirubin samples are especially vulnerable to UV light degradation due to their small sample volume.   Question 9 options:   True   False