Biochemistry Quiz

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Which of the following enzymes is regulated by insulin through phosphorylation?

glucose-6-phosphatase

phosphofructokinase 1

glycogen synthase (correct)

pyruvate kinase

Which of the following statements about lipoproteins is correct?

Chylomicrons transport cholesterol from the liver to peripheral tissues

HDL transports triglycerides from the liver to peripheral tissues

VLDL transports cholesterol from peripheral tissues to the liver

LDL transports triglycerides from the liver to peripheral tissues (correct)

What is the source of blood glucose during fasting?

Glycogenolysis

Gluconeogenesis (correct)

Protein synthesis

Glycolysis

Which of the following isoenzymes increases in myocardial infarction?

LDH1 and LDH2 Signup and view all the answers

What is the effect of insulin on muscle?

Inhibits proteolysis Signup and view all the answers

What is the function of CETP?

Transfers triglycerides and cholesterol esters between HDL and VLDL Signup and view all the answers

What is the primary source of VLDL formation?

Endogenous triacylglycerols Signup and view all the answers

What is the active form of the insulin receptor?

Phosphorylated Signup and view all the answers

Which of the following statements is correct about GLUT4?

It is the primary glucose transporter in muscle cells Signup and view all the answers

What happens to the level of α1-antitripsin in acute inflammation?

It remains normal Signup and view all the answers

What is the function of ceruloplasmin?

Transport of copper Signup and view all the answers

What is the characteristic of serum compared to plasma?

It has the same composition minus fibrinogen Signup and view all the answers

What is one of the roles of albumin in the blood?

to maintain osmotic pressure Signup and view all the answers

Which metabolic pathway is stimulated by insulin in the context of glucose metabolism?

glycolysis Signup and view all the answers

What is the role of α1-glycoprotein acid?

in chronic inflammation Signup and view all the answers

Which of the following is a marker specific to liver pathology?

Gamma-glutamyl transferase (γ-GT) Signup and view all the answers

Which of the following lipoproteins are responsible for the appearance of triglycerides in plasma?

Chylomicrons Signup and view all the answers

What is a characteristic of chylomicrons?

they are transformed by lipoprotein lipase Signup and view all the answers

Which lipoprotein receives apo CII from HDL?

VLDL Signup and view all the answers

What is a possible deficiency in the patient with a triglyceride concentration of 2,000 mg/dl?

Apo C-II Signup and view all the answers

Hypoalbuminemia can occur in which of the following conditions?

Hepatic diseases Signup and view all the answers

In chronic inflammation, which type of globulins increases?

α2-globulins Signup and view all the answers

What is characteristic of diabetes type 1?

Hypertriglyceridemia Signup and view all the answers

What is the main function of albumin in the body?

Maintaining water in the extravascular sector Signup and view all the answers

Which enzyme is involved in maintaining glycemia?

Glucokinaza Signup and view all the answers

What is the main function of transferrin?

To transport iron Signup and view all the answers

What is the effect of Apolipoprotein C-II on lipoprotein lipase?

Stimulates it Signup and view all the answers

What is haptoglobin a marker for?

Vascular hemolysis Signup and view all the answers

What can cause hyperglycemia in an insulin-dependent patient?

Defect in glucose entry into muscle cells Signup and view all the answers

Which lipoprotein is considered anti-atherogenic?

HDL Signup and view all the answers