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Metabolism of cholesterol test

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LESSON 28: METABOLISM OF CHOLESTEROL

Questão 1 de 11

1

Cholesterol is the precursor of...?

Selecione uma das seguintes:

  • 1.) Bile acids

  • 2.) Hormones

  • 3.) Vitamine D

  • Only 1.) and 2.) are true

  • All are true

Explicação

Questão 2 de 11

1

Cholesterol can not be degraded

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 3 de 11

1

Which of these is not true?

Selecione uma das seguintes:

  • The substrates for the synthesis of cholesterol are AcetylCoA, ATP and NADPH

  • 30 reactions occur in cholesterol synthesis

  • The regulation of the synthesis takes place in the first step

  • Synthesis of cholesterol happens in a fasting state

  • Synthesis of cholesterol will take place in liver in the cytosol

Explicação

Questão 4 de 11

1

Which enzyme can be blocked using statins leading to a regulation in the production of mevalonic acid?

Selecione uma das seguintes:

  • Thiolase

  • HMG-CoA synthase

  • HMG-CoA reductase

  • Squalene synthase

  • Prenyl transferase

Explicação

Questão 5 de 11

1

Which molecule or molecules is/are inhibitors of the synthesis of cholesterol?

Selecione uma das seguintes:

  • Cholesterol

  • Glucagon

  • NADPH

  • ATP

  • Glucagon and cholesterol

Explicação

Questão 6 de 11

1

What is found in the surface of a lipoprotein?

Selecione uma das seguintes:

  • Cholesterol esters and triglycerides

  • Proteins, phospholipids (the head) and the hydroxyl group of cholesterol

  • The hydroxyl group of cholesterol

  • Proteins and triglycerides

  • Cholesterol esters, triglycerides and proteins

Explicação

Questão 7 de 11

1

Which is the biggest lipoprotein?

Selecione uma das seguintes:

  • Chylomicrons

  • VLDL's

  • IDL's

  • LDL's

  • HDL's

Explicação

Questão 8 de 11

1

Which lipoprotein transport phospholipids?

Selecione uma das seguintes:

  • Chylomicrons

  • VLDL's

  • IDL's

  • LDL's

  • HDL's

Explicação

Questão 9 de 11

1

If the levels of HDL cholesterol are higher that the levels of LDL this means that you have more bad cholesterol and you are deporting more cholesterol from liver to the tissues than the cholesterol that is transported from the tissues to the liver

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 10 de 11

1

Which of these statements is true?

Selecione uma das seguintes:

  • Any of these

  • Lipoprotein lipase is responsible for the transformation of Fatty Acids and glycerol into TG

  • Lipoprotein lipase is responsible for the transformation of TG and glycerol into Fatty Acids

  • Lipoprotein lipase is responsible for the transformation of Fatty Acids into TG and glycerol

  • Lipoprotein lipase is responsible for the transformation of Glycerol into Fatty Acids and TG

Explicação

Questão 11 de 11

1

What could happen if you find high levels of chylomicrons in a clinical analysis?

Selecione uma das seguintes:

  • The patient is in a fasting state

  • The patient is in a fed state

  • The patient could have a disorder due to the endogenous pathway

  • The patient could have a disorder due to the reverse transport of cholesterol

  • Any of these

Explicação

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