Biuret test Study guides, Revision notes & Summaries

AQA A LEVEL BIOLOGY REVISION EXAM | QUESTIONS & 100% CORRECT ANSWERS (VERIFIED) | LATEST UPDATE | GRADEA+ Describe how you would use a biochemical test to show that a solution contained a nonreducing sugar, such as sucrose. [3] Correct Answer: ,first reducing sugars test; boil with dilute HCl acid then Neutralise with NaHCǑ, add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present Describe a chemical test you could carry out to show that a piece of coc...

ASCP- Clinical Chemistry QUESTIONS & ANSWERS ( A+ GRADED 100% VERIFIED) Diurnal variation - ANS Changes in concentration of an analyte based on the time of the day (measured at day vs. night time) What is increased in the AM? (b/c of diurnal variation) - ANS ACTH, Cortisol, Iron ACTH - ANS adrenocorticotropic hormone- stimulates adrenal cortex to secrete CORTISOL How does stress affect chemistry values? - ANS Increase in ACTH, cortisol, and catecholamines Catecholamines - A...

AAB MT CHEMISTRY STUDY GUIDE (VERIFIED 2023/2024) Which of the four elements in proteins differentiates 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 Amino acid sequence of a protein represent which level of protein structure? - CORRECT ANSWER-Primary structure The alpha helix and bet...

AQA GCSE Biology Paper 1 Graded A+ Magnification equation ️Magnification= image size/actual object size Light microscope- how many um in 1 mm ️1000 um light microscope- how many nm in 1 um ️1000 nm Light microscope- why can we see the nucleus and cell wall but not the mitochondria ️Too small and not stained light microscope- how can we see smaller parts of cells ️An electron microscope has much more resolution and magnification What is osmosis? ️The movement of water ...

AAB MT CHEMISTRY PRACTICE QUESTIONS AND CORRECT ANSWERS 2023/2024 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 - CORRECT 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 - CORRECT ANSWER-c. Biuret Which of the following is the preferred reagent f...

Experiment #: 8 Title: Urinalysis Purpose: The purpose of this lab is to carry out several experiments to evaluate the chemical makeup of a simulated urine sample. Procedure: Part 1: Chloride (Cl- ) 1. Prepare a mixture of AgNO3(silver nitrate) & Cl- solutions 2. These are both colorless solutions 3. Combine the solutions & note how they turn cloudy & form a white precipitate Part 2: Phosphate (PO3 -3) 1. Prepare a mixture of PO4 & (NH4)2MoO3 (Ammonium dimolybdate) solutions 2. Add ...

CHEM 104 Experiment 8: Urinalysis - Portage Learning Purpose: The purpose of this lab is to carry out several experiments to evaluate the chemical makeup of a simulated urine sample. Procedure: Part 1: Chloride (Cl- ) 1. Prepare a mixture of AgNO3(silver nitrate) & Cl- solutions 2. These are both colorless solutions 3. Combine the solutions & note how they turn cloudy & form a white precipitate Part 2: Phosphate (PO3 -3) 1. Prepare a mixture of PO4 & (NH4)2MoO3 (Ammonium dimolybdate) solutions ...

CAPP Biology Test 1 Why is it impossible for humans to digest food that contains cellulose? a - the acidic environment in the human stomach makes it impossible to break the bonds in cellulose b - human digestive enzymes cannot break down the beta - 1,4 glycosidic linkage in cellulose, which requires a special enzyme that is absent in humans c - there is no energy available in fiber d - an inactive form of cellulase in the human digestive system tract renders it undigested and removes i...

Describe how you would use a biochemical test to show that a solution contained a non-reducing sugar, such as sucrose. [3] - correct answer ,first reducing sugars test; boil with dilute HCl acid then Neutralise with NaHCǑ, add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present Describe a chemical test you could carry out to show that a piece of coconut contains lipids. [3] - correct answer (Crush in) ethanol / alcohol; Add (to) water (Order of adding is critic...

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...