MICR 4003 Exam 1
Who of the following scientists was executed by guillotine during the French revolution but later was exonerated?
Antoine Lavoisier
Who of the following scientists ground glass lenses to make microscopes?
Antony van Leeuwenhoek
The invention of beer, but not bread was an important milestone in the history of mankind.
False
There is no good evidence that beer was the driving force that led to agrarian societies.
False
Wort is most susceptible to contamination on the "hot side".
False
The purpose of the endosperm in barley grain is to
Feed the acrospire
Which of the following is NOT a component of Mouer's ancient beer recipe?
Hops
Who of the following scientists discovered that life is possible without oxygen?
Louis Pasteur
What is accomplished during the boil in brewing?
Sanitation, Isomerization of alpha-acids, hot-break
Kilning of germinated grain causes which of the following to happen?
Stops acrospire growth, stops modification, reduces moisture, produces flavor and color
Anchor Brewing Company may never commercialize their Ninkasi beer because it was so difficult to make.
True
It is impossible to know for certain whether it was man's quest for food or the pleasures of beer that drove cereal grain domestication.
True
Oxygen is added to wort as it is transferred from the brew kettle to the fermenter to help make the yeast healthy and encourage fermentation.
True
Several modern day brewers have attempted to recreate the ancient Sumerian recipe for beer made from cakes of malted grain.
True
The "flowing water" in the Hymn to Ninkasi refers to water from the Tigris and Euphrates rivers located in the Fertile Crescent of ancient Mesopotamia.
True
The Hymn to Ninkasi offers a glimpse into ancient brewing practices.
True
The consensus among scholars is that beer was discovered by accident.
True
Wort is cooled as it is transferred from the brew kettle to the fermenter to avoid killing yeast in the fermenter.
True
Ninkasi was
a Sumerian goddess, the brew master to the gods, and honored in the "Hymn to Ninkasi"
The Hymn to Ninkasi was written as
an expression of gratitude for the brewing process.
Which of the following is not a step in malting?
baking
Domesticated barley appeared around 7,750 BC, about the same time that clay vessels were invented. This led to the idea amongst some archaeologists that the clay vessels were used to store __________.
beer
German rulers found it necessary to pass laws to control beer quality because
beer brewing was primitive and susceptible to contamination., some brewers added questionable ingredients, beer was an important dietary staple and safer to drink than water.
The Sumerian word "bappir" is roughly translated as
cake made of grain
Attenuation means
complete conversion of sugar to ethanol.
During lagering, yeast will
consume chemicals that cause off flavors.
Which of the following happen during the "boil" in brewing?
cuts down on contamination, precipitates proteins and resins (hot-beak), dissolves alpha-acids, isomerization of alpha-acids to iso-alpha-acids
Mashing malted barley activates
enzymes that release sugars from starch
Use of a heat exchanger in the brewery lowers the cost of
heating and cooling
The history of beer in Germany dates back 3,000 years and during most of that time beer was brewed in
households
Yeast that have stopped growing but continue to make ethanol are
like a bag of enzymes
"Ninkasi beer" contains nutrients that were not consumed during fermentation and does not contain hops, which might
make it susceptible to spoilage, give it a short shelf life, cause it to taste different from most modern day beers.
Antony van Leeuwenhoek is known for discovering
microbes
Which of the following brewing terms refers to a step in malting that activates enzymes to convert starch to sugars and protein to amino acids?
modification
The ancient Sumerians germinated their barley by
soaking it in jars
Lautering is a process by which
sugars are separated from mash
Louis Pasteur is known for discovering
that beer could be transiently heated to prevent it from spoiling.
Antoine Lavoisier is known for discovering
that carbon dioxide and ethanol are made by fermentation.
Emil Christian Hansen is known for discovering
that use of pure yeast cultures greatly improved consistency in beer brewing.
The first recorded mention of hops, around the year 1,150 AD, was attributed to
the Abbess Hildegard von Bingen.
Why do crushed dates ferment naturally?
the dates have yeast on their surface
Some archaeologists think that beer's greatest impact was
to drive the switch of mankind from hunter-gatherers to agricultural societies.
The Hymn to Ninkasi was
written in the ancient Sumerian language, inscribed in Cuneiform, discovered on a clay tablet
In its original version, 500 years ago, German purity laws did NOT include which of the following ingredients?
yeast