Biology 189 Final Lab Practical UNLV
questions with correct answers
graded a+ a must pass!
Measurements, Cells, Biochemistry, Genetics, Ecology & Evolution
1. Measure and Units
CORRECT ANSWER:
• Length – Meter (m)
• Mass – Gram (g)
• Volume – Liter (L)
• Temperature – Celsius (°C)
2. Metric Conversion
CORRECT ANSWER:
KHDBDCM_Mc__N
(Kilo, Hecto, Deka, Base, Deci, Centi, Milli, Micro, Nano)
3. Independent Variable
CORRECT ANSWER:
The factor being manipulated or changed by the researcher.
4. Dependent Variable
, CORRECT ANSWER:
The response that is being measured or observed. The variable expected to change when the
independent variable is manipulated.
5. Controlled Variables
CORRECT ANSWER:
All other factors that may affect the outcome of the experiment and must be kept constant for
all groups.
6. Hypothesis
CORRECT ANSWER:
A reasonable explanation proposed to answer the question being investigated.
7. Prediction
CORRECT ANSWER:
Logical results expected based on the research hypothesis. Usually written as an If/Then
statement.
LAB REVISION
8. Lab 2: Scientific Investigation
CORRECT ANSWER:
Hypothesis:
Organically grown fruit are more nutritious than conventionally grown fruit.
Prediction:
If organic fruit has a higher Brix level than non-organic fruit, then they are the more nutritious
ones.
Outcome:
Organic fruit was not more nutritious.
, Instrument Used:
Hand-Held Refractometer.
BIOCHEMISTRY OF BREAKFAST
9. Lab 3: Bananas
CORRECT ANSWER:
Benedict's Solution:
Detects the presence of simple sugars.
Color change: Blue → Orange
Iodine Solution:
Detects the presence of starch.
Color change: Brown → Dark Blue
Outcome:
• Unripe banana contained simple sugars.
• Ripe banana contained starch.
10. Saturated Fat
CORRECT ANSWER:
Long fatty acid chains where each carbon is bonded to the maximum number of hydrogen
atoms.
11. Unsaturated Fat
CORRECT ANSWER:
Contains at least two carbon atoms that are double bonded to each other.
12. Lab 3: Milk Lipid Test
CORRECT ANSWER:
questions with correct answers
graded a+ a must pass!
Measurements, Cells, Biochemistry, Genetics, Ecology & Evolution
1. Measure and Units
CORRECT ANSWER:
• Length – Meter (m)
• Mass – Gram (g)
• Volume – Liter (L)
• Temperature – Celsius (°C)
2. Metric Conversion
CORRECT ANSWER:
KHDBDCM_Mc__N
(Kilo, Hecto, Deka, Base, Deci, Centi, Milli, Micro, Nano)
3. Independent Variable
CORRECT ANSWER:
The factor being manipulated or changed by the researcher.
4. Dependent Variable
, CORRECT ANSWER:
The response that is being measured or observed. The variable expected to change when the
independent variable is manipulated.
5. Controlled Variables
CORRECT ANSWER:
All other factors that may affect the outcome of the experiment and must be kept constant for
all groups.
6. Hypothesis
CORRECT ANSWER:
A reasonable explanation proposed to answer the question being investigated.
7. Prediction
CORRECT ANSWER:
Logical results expected based on the research hypothesis. Usually written as an If/Then
statement.
LAB REVISION
8. Lab 2: Scientific Investigation
CORRECT ANSWER:
Hypothesis:
Organically grown fruit are more nutritious than conventionally grown fruit.
Prediction:
If organic fruit has a higher Brix level than non-organic fruit, then they are the more nutritious
ones.
Outcome:
Organic fruit was not more nutritious.
, Instrument Used:
Hand-Held Refractometer.
BIOCHEMISTRY OF BREAKFAST
9. Lab 3: Bananas
CORRECT ANSWER:
Benedict's Solution:
Detects the presence of simple sugars.
Color change: Blue → Orange
Iodine Solution:
Detects the presence of starch.
Color change: Brown → Dark Blue
Outcome:
• Unripe banana contained simple sugars.
• Ripe banana contained starch.
10. Saturated Fat
CORRECT ANSWER:
Long fatty acid chains where each carbon is bonded to the maximum number of hydrogen
atoms.
11. Unsaturated Fat
CORRECT ANSWER:
Contains at least two carbon atoms that are double bonded to each other.
12. Lab 3: Milk Lipid Test
CORRECT ANSWER:
