Biol 101 Practice Exam 1 PDF

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Practice Exam for Midterm 1...

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NOTE: This exam is from a non-science major's course that I teach, "The Biology of Food". It covers some of the material I have covered in Biology 101, but also has questions that are unrelated to Biology 101. These latter questions should be obvious and, of course, you do not need to know the answers to these questions. YOU SHOULD USE THIS PRACTICE EXAM AS AN EXAMPLE OF THE FORMAT OF THE MIDTERM. DO NOT ASSUME THAT ALL OF THE QUESTIONS WILL LOOK LIKE THIS. ! ! True!(T)!or!False!(F).!!!2!pts.!each! ! _______!1.!Translation!does!not!occur!in!bacteria.! _______!2.!All!eukaryotic!cells!have!a!cell!wall.! _______!3.!The!casein!in!milk!is!produced!on!rough!endoplasmic!reticulum.!! _______!4.!Pollen!grains!have!two!sperm!cells.!! _______!5.!Plants!are!the!only!photosynthetic!organisms!on!earth.! _______!6.!Muscle!contraction!is!the!result!of!an!interaction!between!actin!and!tubulin.! _______!7.!Glycolysis!is!necessary!for!both!respiration!and!fermentation.! _______!8.!Respiration!uses!oxygen!to!synthesize!carbohydrates.!! _______!9.!A!genus!can!have!more!than!one!species.! _______!10.!Twinkies!contain!vitamins.!!! ! Fill!in!the!blanks!!2!pts!each!answer! 11.!Yogurt!is!naturally!sour!because!it!contains___________________________________________! ! 12.!!All!of!the!carbon!in!our!body!is!derived!from!this!gas!_______________________________! ! 13.!The!term!for!the!group!of!plants!capable!of!fixing!nitrogen_________________________________! !

14.!This!protein!plays!an!important!role!in!regulating!oxygen!availability!in! muscle:______________________________.! ! 15.!!Most!digestion!occurs!in!this!part!of!our!digestive!system__________________________________! ! 16.!!Plant!lipids!are!liquid!at!room!temperature!because!their!fatty!acids!have!a!large!number! of________________________________.!!!A!term!that!is!commonly!used!to!describe!this!type!of! lipid__________________________________.! ! 17.!Term!for!the!region!that!produces!all!the!tissue!in!a!plant!shoot_______________________________.! ! 18.!!The!amount!of!energy!a!human!uses!during!various!activities!is!determined!in!“indirect! calorimetry”!by!measuring!the!amount!of!___________________________!consumed,!and!the!amount!of! __________________________!produced.!!! ! 19.!!The!uptake!of!glucose!into!the!liver!is!regulated!by!this!HORMONE______________________________,! which!is!produced!in!this!ORGAN_____________________________.! ! 20.!!Molecule!that!is!used!by!the!ribosome!as!a!template!during!protein!synthesis!_____________________.! ! 21.!!List!the!following!structures!from!SMALLEST!to!LARGEST!(use!letters)!(4!pts.)! A.!Mitochondrion! B.!Eukaryotic!cell! C.!Ribosome!

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D.!Nucleotide! ! 22.!!Indicate!whether!the!major!component!of!the!following!structures/substances!is!a!!(L)!lipid,!(C)! carbohydrate,!(P)!protein,!or!(N)!nucleic!acid.!!Most!of!these!structures!contain!all!of!these! molecules—which!one!is!the!most!abundant?!!(10!pts)! ! Plasma!membrane______________! Muscle!______________! Plant!cell!wall______________! Cream____________! Lactase______________!

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! 23.!What!plant!part!is!represented!by!the!following!common!foods?!!Choose!from!the!following!list! (10!pts)!shoot,!root,!!flower,!fruit,!!leaf,!!endosperm,!!embryo.!!Answers!may!be!used!more!than! once.! Celery!stick!_____________________________! Cornflake!_________________________! Tomato!____________________________! Onion!rings!_______________________! French!fries!____________________________! !! 24.!Is!it!more!energy!efficient!to!eat!chicken!or!beef?!Why?!(5!pts)! ! ! !25.!All!humans!can!drink!milk!as!babies,!but!only!some!can!drink!milk!comfortably!as!adults.!!Why?! (5!pts)! ! ! 26.!Draw!a!crossdsection!of!a!fish,!illustrating!the!location!of!fastdtwitch!and!slowdtwitch!muscle.! Briefly!describe!how!these!types!of!muscle!contribute!to!swimming!behavior.!(6!pts)! ! ! ! 27.!What!is!the!most!effect!way!to!lose!weight,!and!why!is!this!so!difficult!to!do?!(4!pts)! ! !! ! 28.!Why!do!we!cook!food?!Use!the!back!of!this!sheet,!if!necessary!(10!pts)! ! ! ! !

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