Biochemistry Protein Analysis Quiz
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Questions and Answers

What is proteinuria commonly associated with?

  • Damage to or disease of the kidneys (correct)
  • Normal kidney function
  • High protein diet intake
  • Excessive serum protein production

Which condition could lead to inadequate protein intake?

  • Starvation or malnutrition (correct)
  • Frequent exercise
  • Obesity
  • Chronic renal disease

What characterizes albuminuria?

  • Presence of serum albumin or other serum proteins in urine (correct)
  • Lack of urine protein indicators
  • Presence of only serum globulin in urine
  • Indicates only heart disease

Which cause can result in impaired protein production?

<p>Liver disease (A)</p> Signup and view all the answers

Which of the following conditions can cause proteinuria after physical activity?

<p>Strenuous exercise (D)</p> Signup and view all the answers

What is denaturation in the context of proteins?

<p>The unfolding of a protein's secondary and tertiary structures (B)</p> Signup and view all the answers

What is the result of coagulation of proteins?

<p>Clumping of denatured protein chains into an insoluble mass (A)</p> Signup and view all the answers

Which of the following describes flocculation?

<p>Simple clumping together of dispersed protein chains (D)</p> Signup and view all the answers

What process occurs when a denatured protein returns to its native form?

<p>Renaturation (B)</p> Signup and view all the answers

Which of the following is NOT a denaturing agent?

<p>Hypotonic solutions (A)</p> Signup and view all the answers

At what point does a protein often precipitate?

<p>At isoelectric point (A)</p> Signup and view all the answers

Which statement accurately describes the condition of proteins during denaturation?

<p>Proteins unfold into a biologically inactive form (D)</p> Signup and view all the answers

What role do alkaloidal reagents play in protein precipitation?

<p>They induce precipitation of proteins (C)</p> Signup and view all the answers

What effect does high concentrations of ammonium sulfate have on proteins?

<p>Precipitates them out of solution (C)</p> Signup and view all the answers

Which of the following salts is commonly used for cauterization due to its ability to precipitate proteins?

<p>Silver nitrate (C)</p> Signup and view all the answers

Why does 70% alcohol exhibit greater germicidal properties than 95% alcohol?

<p>It evaporates slower than 95% alcohol (B)</p> Signup and view all the answers

What is the primary reason proteins precipitate when treated with alcohol?

<p>Alcohol replaces water molecules around proteins (C)</p> Signup and view all the answers

In cases of metallic poisoning, why are egg white and milk given as antidotes?

<p>They create insoluble precipitates that can be removed (C)</p> Signup and view all the answers

What condition is referred to by the term hypoproteinemia?

<p>Deficiency of proteins in blood plasma (C)</p> Signup and view all the answers

What characteristic of pure alcohol limits its effectiveness as a germicide?

<p>It forms a coagulum that protects bacteria (B)</p> Signup and view all the answers

What happens to proteins when they are allowed to stand in alcohol?

<p>They are denatured and coagulated (D)</p> Signup and view all the answers

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