Quiz 3_ FST 003V 001 WQ 2024 3

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University of California, Davis *

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003

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Chemistry

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Feb 20, 2024

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2/16/24, 3:13 PM Quiz 3: FST 003V 001 WQ 2024 https://canvas.ucdavis.edu/courses/857612/quizzes/234629 1/7 Quiz 3 截止时间 2 16 23:59 得分 20 问题 20 可用 2 16 6:00 2 16 23:59 17 小时 59 分钟 时间限制 40 分钟 说明 尝试历史记录 尝试 时间 分数 最新 尝试 1 19 分钟 20 ,满分 20 此测验的分数: 20 ,满分 20 提交时间 2 16 15:13 此尝试进行了 19 分钟。 问题 1 1 / 1 Beta acids Alpha phenols Beta phenols 正确 ! Alpha acids Welcome to Quiz 3. This week's quiz covers the following topics 1. Hops 2. Yeast The quiz is comprised of 20 questions. The questions is made up of True/False and Multiple choice questions. Once you start the quiz it is timed for 40 minutes. Please complete the quiz in this time. The timer is running once you start and will stop at 40 minutes. Good luck Glen What is converted into bitter substances?
2/16/24, 3:13 PM Quiz 3: FST 003V 001 WQ 2024 https://canvas.ucdavis.edu/courses/857612/quizzes/234629 2/7 Correct. Alpha acids are converted in the brewing process into the bitter elements. 问题 2 1 / 1 正确 ! They are sensitive to light They cause extreme bitterness They are only 25% utilized They are really expensive 问题 3 1 / 1 No answer text provided. Anthocyanins Polyphenols 正确 ! Resins Correct. They comprise the alpha acids that contribute to bitterness and support the foam of the beer. 问题 4 1 / 1 正确 ! Humulus lupulus Correct. The lupulus hop is used for brewing. The resin and oils make up lupulin. Humulus yunnanensis Humulus japonicus 问题 5 1 / 1 Kepy at 109ºC Dried to less than 29% moisture Kept at 0ºC 正确 ! What is the downside to iso-alpha acids? Bitterness comes from the _____. Which species of hop is used for brewing? Fresh hops need to be ____________ if they are to be stored.
2/16/24, 3:13 PM Quiz 3: FST 003V 001 WQ 2024 https://canvas.ucdavis.edu/courses/857612/quizzes/234629 3/7 Dried to less than 9% moisture Correct. If hops are being stored, they need to contain less than 9% moisture to after coming out of the hop kiln. 问题 6 1 / 1 正确 ! True Correct. Hops are an antiseptic, and have several other personal care uses as well such as mouthwash and shampoo. False 问题 7 1 / 1 True 正确 ! False They tent to rely on reduced pre-isomerized extract, which decrease the chances that the beer will have a skunky character. 问题 8 1 / 1 More resistant to pests and disease Yields a larger crop 正确 ! Easier to cultivate and harvest Correct. They are also cheaper to maintain. Cheaper to buy 问题 9 1 / 1 Bracteole 正确 ! Lupulin glands Hops are antiseptic. Beers packaged in green or clear bottles often rely on hop pellets to add flavor because they are more stable then whole hops. What is the main benefit of dwarf hops? Which part of the hop plant is of most interest to brewers?
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2/16/24, 3:13 PM Quiz 3: FST 003V 001 WQ 2024 https://canvas.ucdavis.edu/courses/857612/quizzes/234629 4/7 Correct. Lupulin are the yellow glands that contain the key components of the hop that the brewer is interested in. Seeds Bract 问题 10 1 / 1 3-8 feet 8-10 feet 1-3 feet 正确 ! 12-25 feet Hops traditionally grow to heights in this range. 问题 11 1 / 1 正确 ! True False 问题 12 1 / 1 正确 ! True False 问题 13 1 / 1 正确 ! Saccharomyces cerevisiae Saccharomyces pastorianus Traditionally, hops grow ________ tall under cultivation. The medieval name for yeast was godesgood. S. cerevisiae is typically used at higher temperatures than S.pastorianus. What type of yeast is considered “Ale yeast”?
2/16/24, 3:13 PM Quiz 3: FST 003V 001 WQ 2024 https://canvas.ucdavis.edu/courses/857612/quizzes/234629 5/7 Saccharomyces bayanus Saccharomyces arboricolus 问题 14 1 / 1 正确 ! To make its membranes To make the cell wall To make DNA To make alcohol 问题 15 1 / 1 正确 ! Acetaldehyde Green Apple 正确 ! Esters Fruits (banana, pears) 正确 ! Fatty Acids Wet dog, Goat 正确 ! Diacetyl Butterscotch, Popcorn 正确 ! Hydrogen sulfide Eggy Yeast needs a little oxygen Match the yeast byproduct with its corresponding aroma
2/16/24, 3:13 PM Quiz 3: FST 003V 001 WQ 2024 https://canvas.ucdavis.edu/courses/857612/quizzes/234629 6/7 问题 16 1 / 1 Methyl red Fluffiness of colonies when grown on agar plates Bud scars 正确 ! Methylene blue 问题 17 1 / 1 bottom fermenting 正确 ! more heat tolerant 正确 ! dry hopping late hopping 正确 ! doesn’t use melibiose 正确 ! top fermenting slower fermentation 正确 ! fast fermentation uses melibiose 问题 18 1 / 1 25 20 15 正确 ! 10 Yeast viability can be assessed using Which of the following pertain to ales and ale yeast? If a beer has a specific gravity of 1.04 how many degrees Plato is that beer?
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2/16/24, 3:13 PM Quiz 3: FST 003V 001 WQ 2024 https://canvas.ucdavis.edu/courses/857612/quizzes/234629 7/7 问题 19 1 / 1 total cell count studying its flocculation 正确 ! counting scars seeing whether it will grow on melibiose 问题 20 1 / 1 正确 ! budding mitosis meiosis sporulation 测验分数: 20 ,满分 20 You can tell the age of a yeast cell by How does a yeast cell multiply in a brewery fermentation?