Lab Exam #1 - Labs 1-5 Guaranteed
Questions And Answers
subtracting the weight boat from the final weight Guaranteed Answers tare weight
collect and organize information Guaranteed Answers Observation
-explanations(s) /guess for the observation
-must be testable
-statement
If you give plants sunlight, then they will grow
I think that...
- Expected experimental outcome
- Stated in sentence form
o Ex. Pea Seed Experiment: Hypothesis
o BY calculating the average weight on an individual pea seed, you can multiply that
average weight by 100 to get the probable weight pea seeds. Guaranteed Answers
Hypothesis
(1) Experimental variable
a. control group and an experimental group
(2) Replication of experiment
(3) Statistical evaluation Guaranteed Answers Experimentation
assumes no real difference between measured and expected value's, therefore
-how good is the "fit" between these values
-if the fit is imperfect, how much deviation is allowed Guaranteed Answers Null
Hypothesis
evaluation of deviation and sample size --> Value used to evaluate deviation and
expectation due to chance Guaranteed Answers Chi Square Analysis
X^2 = total of (observed - expected)^2/Expected Guaranteed Answers Chi Square
-one less than possible outcome
-must be taken into account because the greater number of outcomes, the more
deviation is expected due to change Guaranteed Answers Degrees of freedom (df)
**always one
-Probability of obtaining observed deviation by chance alone, therefore the larger the p
value, the closer data are to ideal values
, P value <0.05 reject the null hypothesis (statistically significant results)
P value >0.05 fail to reject the null hypothesis (observed difference due to chance)
Calculation of p value is difficult so the chi square value is used to located the p value
on a chart Guaranteed Answers Probability value (p value)
meniscus = the curve Guaranteed Answers Volumetric measurements
variation Guaranteed Answers What does every living system have?
Small samples are not as valid as larger samples. Guaranteed Answers What's more
accurate in terms of samples?
1. Carbohydrates
2. Proteins
3. Lipids
4. Nucleic acids Guaranteed Answers Chemical Concepts and Organic Molecules
reducing sugars monosaccharides (single; fructose, galactose), disaccharides (two;
sucrose), polysaccharides (many; starch), starch
- sugars monosaccharides, disaccharides, polysaccharides
- most common form glucose + fructose = sucrose (disaccharide)
- starches Guaranteed Answers Carbohydrates
20 amino acids
- N - amino group
- COOH-carbaryl group
- H - Hydrogen
- R - variable group (20) Guaranteed Answers Proteins
insoluble in water (3 major groups: oils/fats/waxes, phospholipids, steroids)
- Fats, steroids, phospholipid
- All contain long fatty acid chains Guaranteed Answers Lipids
DNA and RNA (phosphate, sugar, Nitrogen-containing base)
- Nucleotide (monosaccharide) Guaranteed Answers Nucleic acids
to form by removing water Guaranteed Answers Dehydration Synthesis
to break apart with water Guaranteed Answers Hydrolysis
1. Benedicts test
2. Iodine test
3. Bluret test
4. Sudan IV
Questions And Answers
subtracting the weight boat from the final weight Guaranteed Answers tare weight
collect and organize information Guaranteed Answers Observation
-explanations(s) /guess for the observation
-must be testable
-statement
If you give plants sunlight, then they will grow
I think that...
- Expected experimental outcome
- Stated in sentence form
o Ex. Pea Seed Experiment: Hypothesis
o BY calculating the average weight on an individual pea seed, you can multiply that
average weight by 100 to get the probable weight pea seeds. Guaranteed Answers
Hypothesis
(1) Experimental variable
a. control group and an experimental group
(2) Replication of experiment
(3) Statistical evaluation Guaranteed Answers Experimentation
assumes no real difference between measured and expected value's, therefore
-how good is the "fit" between these values
-if the fit is imperfect, how much deviation is allowed Guaranteed Answers Null
Hypothesis
evaluation of deviation and sample size --> Value used to evaluate deviation and
expectation due to chance Guaranteed Answers Chi Square Analysis
X^2 = total of (observed - expected)^2/Expected Guaranteed Answers Chi Square
-one less than possible outcome
-must be taken into account because the greater number of outcomes, the more
deviation is expected due to change Guaranteed Answers Degrees of freedom (df)
**always one
-Probability of obtaining observed deviation by chance alone, therefore the larger the p
value, the closer data are to ideal values
, P value <0.05 reject the null hypothesis (statistically significant results)
P value >0.05 fail to reject the null hypothesis (observed difference due to chance)
Calculation of p value is difficult so the chi square value is used to located the p value
on a chart Guaranteed Answers Probability value (p value)
meniscus = the curve Guaranteed Answers Volumetric measurements
variation Guaranteed Answers What does every living system have?
Small samples are not as valid as larger samples. Guaranteed Answers What's more
accurate in terms of samples?
1. Carbohydrates
2. Proteins
3. Lipids
4. Nucleic acids Guaranteed Answers Chemical Concepts and Organic Molecules
reducing sugars monosaccharides (single; fructose, galactose), disaccharides (two;
sucrose), polysaccharides (many; starch), starch
- sugars monosaccharides, disaccharides, polysaccharides
- most common form glucose + fructose = sucrose (disaccharide)
- starches Guaranteed Answers Carbohydrates
20 amino acids
- N - amino group
- COOH-carbaryl group
- H - Hydrogen
- R - variable group (20) Guaranteed Answers Proteins
insoluble in water (3 major groups: oils/fats/waxes, phospholipids, steroids)
- Fats, steroids, phospholipid
- All contain long fatty acid chains Guaranteed Answers Lipids
DNA and RNA (phosphate, sugar, Nitrogen-containing base)
- Nucleotide (monosaccharide) Guaranteed Answers Nucleic acids
to form by removing water Guaranteed Answers Dehydration Synthesis
to break apart with water Guaranteed Answers Hydrolysis
1. Benedicts test
2. Iodine test
3. Bluret test
4. Sudan IV
