WorksheetsIB Biology Liver Functions & Jaundice
Total questions: 16
Worksheet time: 12mins
Which of the following are functions of the liver?
I. production of cholesterol
II. converting cholesterol to bile salts
III. producing red blood cells
I and II only
I and III only
II and III only
I, II and III
Which organelle in a hepatocyte produces plasma proteins?
Golgi apparatus
free ribosome
rough endoplasmic reticulum
nucleus
What is the role of Golgi apparatus in hepatocytes?
produces plasma proteins for use within the cell
produces plasma proteins to be exported out of the cell
packages and modifies plasma proteins
breaks down vesicles
Which toxic substances are broken down by the liver?
I. carbon dioxide
II. excess amino acids
III. lactate
I and II only
I and III only
II and III only
I, II and III
Which of the following are true of Kupffer cells?
I. they are phagocytes
II. they develop into red blood cells
III. they are in the walls of sinusoids
I and II only
I and III only
II and III only
I, II and III
Which of the following is true of hemoglobin?
it contains four amino acids
it contains iron
it can only combine with oxygen
it is only found in humans
Which of the following is true about the breakdown of red blood cells?
It is split into heme groups and immunoglobulins (antibodies)
Globins undergo condensation reactions to produce amino acids
Iron is added to globins to produce amino acids
Iron is removed from heme groups to form bilirubin
After the breakdown of red blood cells, to where is iron carried to produce new red blood cells?
lungs
stomach
kidney
bone marrow
After breaking down red blood cells, what happens to iron, bilirubin and amino acids?
they are released into the blood
they are stored in the liver
they are excreted in urine
they are egested in faeces
Which of the following are breakdown products of red blood cells?
I. bilirubin
II. iron
III. amino acids
I and II only
I and III only
II and III only
I, II and III
If the blood glucose level is too high, how will the liver respond?
it will produce insulin and convert glucose to glycogen
it will produce glucagon and convert glycogen to glucose
it will convert glucose to glycogen and store this in hepatocytes
it will convert glycogen to glucose and release this into the blood
Which of the following can directly cause jaundice?
excess hemoglobin being released into the blood
insufficient hemoglobin being released into the blood
excess bilirubin being released into the blood
insufficient bilirubin being released into the blood
Which of the following are true of jaundice?
I. It can be a symptom of hepatitis
II. It can be a symptom of having gallstones
III. It is usually more severe in adults than in infants
I and II only
I and III only
II and III only
I, II and III
Which of the following can be made from cholesterol?
I. bile salts
II. steroid hormones
IIII. plasma membranes
I and II only
I and III only
II and III only
I, II and III
Which of the following show(s) how HDL are different to LDLs?
I. HDLs raise the blood cholesterol level
II. LDLs are small spheres coated in phospholipid
III. LDLs carry cholesterol from the liver to body tissues
I only
III only
I and III only
I, II and III
Lipoproteins are small spheres of phospholipid.
What chemicals are phospholipids made from?
I. amino acids
II. glycerol
III. phosphate
I and II only
I and III only
II and III only
I, II and III
