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BIO 101 Lab Exam 1 Study Guide fully solved already passed
- Course
- Bly 101
- Institution
- University Of South Alabama
BIO 101 Lab Exam 1 Study Guide fully solved already passed
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BIO 101 Lab Exam 1 Study GuideWhat is the function of nucleic acids? - correct answer ✔✔Encode and transmit genetic information
(DNA and RNA)
What is the function of Lipids? - correct answer ✔✔Make up cell membrane and store energy
What test indicates the presence of lipids? - correct answer ✔✔The Grease Spot Test
If an unknown solution left a translucent spot when dry does this substance contain lipids or not? -
correct answer ✔✔Contains lipids
Why are lipid substances hard to wash off? - correct answer ✔✔They contain hydrophobic molecules
What is the function of proteins? (List three) - correct answer ✔✔Catalyze chemical reactions, transmit
signals, and provide structural support
What test indicates the presence of proteins within a substance? - correct answer ✔✔Biuret test:
Changes color
If you are testing to see if an unknown liquid contains protein and the substance turns violet, does it
have proteins? - correct answer ✔✔Yes, there is a presence of polypeptides
What do our bodies constantly crave, which our bodies are highly made up of? - correct answer
✔✔Amino acids
What flavor does protein have? - correct answer ✔✔Umami or savory
What is the function of carbohydrates? - correct answer ✔✔Provide principal source of energy
, What test(s) indicate the presence of sugar and or starch? - correct answer ✔✔Benedict's reaction and
Iodine (respectivly)
What does Benedict's reaction do? - correct answer ✔✔Turns colors indicating the amount of sugars
present?
If you are using benedict's reaction test to determine if an unknown solution has a small or large amount
of sugars, and the solution turns green does it have a small or large amount? - correct answer ✔✔Small
amount of sugars
If you are using benedict's reaction test to determine if an unknown solution has a small or large amount
of sugars, and the solution turns bright red does it have a small or large amount? - correct answer
✔✔Large amount of sugars
If you are using benedict's reaction test to determine if an unknown solution has a small or large amount
of sugars, and the solution turns yellow-orange does it have a small or large amount? - correct answer
✔✔Intermediate amount of sugars present in solution
Iodine indicates presence of ___________? - correct answer ✔✔Starch
If you are testing if food has starch or not using the iodine test and the food turns from a pale yellow to a
blue-black shade in iodine presence, does this food have starch or not? - correct answer ✔✔This food
has starch
The _______________________ interior of the cell membrane prevents the simple process of? - correct
answer ✔✔Hydrophobic, diffusion
Define the process of Osmosis? - correct answer ✔✔The movement of H2O across a membrane driven
by a concentration gradient
Water always flows to the ___________________ concentration? - correct answer ✔✔Hypertonic
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