Biuret Study guides, Class notes & Summaries
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AQA GCSE BIOLOGY 8461/1H Paper 1 Higher Tier Question Paper + Mark scheme [MERGED] June 2022 *JUN2284611H01* IB/M/Jun22/E20 8461/1H For Examiner’s Use Question Mark 1
- Exam (elaborations) • 72 pages • 2023
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AQA 
GCSE 
BIOLOGY 
8461/1H 
Paper 1 Higher Tier 
Question Paper + Mark scheme [MERGED] 
June 2022 
 
*JUNH01* 
IB/M/Jun22/E20 8461/1H 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
6 
7 
TOTAL 
Time allowed: 1 hour 45 minutes 
Materials 
For this paper you must have: 
• a ruler 
• a scientific calculator. 
Instructions 
• Use black ink or black ball-point pen. 
• Pencil should only be used for drawing. 
• Fill in the boxes at the top of this page. 
• Answer all questions in th...
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BIOL 1406 Lab Midterm Exam Questions and Answers 100% Pass
- Exam (elaborations) • 13 pages • 2024 Popular
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BIOL 1406 Lab Midterm Exam Questions 
 
and Answers 100% Pass 
 
What is the stinging organelle that assists it in capturing large prey? Trichocyst 
 
Which species of amoeba did you observe under the microscope? Amoeba proteus 
 
Which experimental group receives the treatment? Control group 
 
A solution that tends to release protons is An acid 
 
The portion of a phospholipid that contains the phosphate group has one or more electrical 
charges. That makes this region of the molecule Hydrophi...
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MT AAB CHEMISTRY QUESTIONS WITH ELABORATED ANSWERS 2023
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MT AAB CHEMISTRY QUESTIONS WITH 
ELABORATED ANSWERS 2023 
Which of the four elements in proteins differentiated this class of substances from 
carbohydrates and lipids? - CORRECT ANSWER-Nitrogen 
Which of the proteins is soluble in water? - CORRECT ANSWER-Albumin 
How are amino acids joined together to form a chainlike structure? - CORRECT 
ANSWER-Peptide bonding 
Proteins may become denatured when subjected to mechanical agitation, heat, or 
chemical treatment. What does denaturation of pro...
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AAB MT Chemistry- Practice questions with 100% Correct Answers | Verified | Latest Update 2024
- Exam (elaborations) • 42 pages • 2024
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AAB MT Chemistry- Practice questions with 100% Correct Answers | Verified | Latest Update 2024 
Which of the following aminoacidopathies is NOT caused by an enzyme deficiency? 
Choose one answer. 
a. phenylketonuria 
b. alkaptonuria 
c. maple syrup disease 
d. cystinuria - d. cystinuria 
What method is most commonly used to measure total protein? 
Choose one answer. 
a. dye binding 
b. Kjeldahl 
c. Biuret 
d. refractometry - c. Biuret 
Which of the following is the preferred reagent for measurin...
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MT AAB Chemistry Questions with 100% Correct Answers | Verified | Latest Update 2024
- Exam (elaborations) • 41 pages • 2024
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MT AAB Chemistry Questions with 100% Correct Answers | Verified | Latest Update 2024 
Which of the four elements in proteins differentiated this class of substances from carbohydrates and lipids? - Nitrogen 
Which of the proteins is soluble in water? - Albumin 
How are amino acids joined together to form a chainlike structure? - Peptide bonding 
Proteins may become denatured when subjected to mechanical agitation, heat, or chemical treatment. What does denaturation of proteins refer to? - Altera...
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AAB MT Chemistry- Practice Questions And Answers Solved 100% Correct!!
- Exam (elaborations) • 21 pages • 2023
- Available in package deal
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Which of the following aminoacidopathies is NOT caused by an enzyme deficiency? 
Choose one answer. 
a. phenylketonuria 
b. alkaptonuria 
c. maple syrup disease 
d. cystinuria - Answer d. cystinuria 
What method is most commonly used to measure total protein? 
Choose one answer. 
a. dye binding 
b. Kjeldahl 
c. Biuret 
d. refractometry - Answer c. Biuret 
Which of the following is the preferred reagent for measuring albumin by the dye binding method 
because there is less interfering substances?...
-
AAB MT Chemistry- Practice | Questions with 100% Correct Answers | Verified | Latest Update 2024 | 21 Pages
- Exam (elaborations) • 21 pages • 2023
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Which of the following aminoacidopathies is NOT caused by an enzyme deficiency? 
Choose one answer. 
a. phenylketonuria 
b. alkaptonuria 
c. maple syrup disease 
d. cystinuria - d. cystinuria 
What method is most commonly used to measure total protein? 
Choose one answer. 
a. dye binding 
b. Kjeldahl 
c. Biuret 
d. refractometry - c. Biuret 
Which of the following is the preferred reagent for measuring albumin by the dye binding method 
because there is less interfering substances? 
Choose one a...
-
BIOL 1406 Lab Midterm Exam Questions with 100% Correct Answers | Latest Version 2024 | Expert Verified | Ace the Test
- Exam (elaborations) • 13 pages • 2024
- Available in package deal
-
- $11.49
- + learn more
What is the stinging organelle that assists it in capturing large prey? Trichocyst 
Which species of amoeba did you observe under the microscope? Amoeba proteus 
Which experimental group receives the treatment? Control group 
A solution that tends to release protons is An acid 
The portion of a phospholipid that contains the phosphate group has one or more electrical 
charges. That makes this region of the molecule Hydrophilic 
The Biuret test is used to detect the presence of which group of mac...
-
MT AAB Chemistry Questions & Answers Already Graded A + 2024 latest
- Exam (elaborations) • 19 pages • 2023
- Available in package deal
-
- $8.49
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Which of the four elements in proteins differentiated this class of substances from carbohydrates and 
lipids? - Nitrogen 
Which of the proteins is soluble in water? - Albumin 
How are amino acids joined together to form a chainlike structure? - Peptide bonding 
Proteins may become denatured when subjected to mechanical agitation, heat, or chemical treatment. 
What does denaturation of proteins refer to? - Alteration of tertiary structure 
Which aminoacidopathy is NOT caused by an enzyme deficie...
-
Bio 1406 - lab exam 2 latest update graded A+
- Exam (elaborations) • 12 pages • 2024
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Bio 1406 - lab exam 2 latest update 
 
graded A+ 
 
Benedicts Reagent to test for a reducing sugar 
 
Iodine Reagent to test for a starch 
 
Biuret Reagent to test for a protein 
 
Positive Test changes colors (benedicts) or turns blue-black (iodine) 
 
Negative Test stays the same color (benedicts) or turns amber (iodine) 
 
Negative for Benedicts water, potato, starch 
 
Positive for Benedicts soda, onion, milk, glucose 
 
Negative for Iodine water, glucose 
 
Positive for Iodine cornstarch 
 ...
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