Question 5 Select one answer. 10 points Which type of lipoprotein is carried to

Question

Question 5

Select one answer.

10 points

Which type of lipoprotein is carried to the liver for processing?

LDL

HDL

Both of these

Question 6

Select one answer.

10 points

Which cell structure is made mostly of phospholipids?

cytosol

ribosomes

membranes

chromosomes

Question 7

Select one answer.

10 points

What type of lipid is shown here?

Triglyceride

Phospholipid

Fatty acid

Steroid

Question 8

Select one answer.

10 points

Which lipid provides a water protective layer on the surface of some animals and plants?

steroids

triglycerides

waxes

phospholipids

Question 9

Select all that apply.

10 points

Which of the following are functions of steroids? Select all that apply.

communication

maintain membrane fluidity

precursors to vitamins

enzymes

Question 10

Select one answer.

10 points

What is this structure?

phospholipid

unsaturated fatty acid

cholesterol

saturated fatty acid

Explanation / Answer

Answer 5 a) LDL

Reason- LDL stands for low-density lipoprotein and HDL stands for high-density lipoprotein. while LDLs are involved in the transportation of cholesterol to the cells, HDLs are involved in reverse cholesterol transport when there is an excess of cholesterol in the body. HDL is synthesized inside the liver and secreted into the circulation. during this process, HDL gets matured and brings back the excess cholesterol and LDL to the liver. there, LDL is processed and removed out of the cells into bile salt form.

Answer 6 c) Membranes

Reason - Cell membranes are composed of phospholipid bilayers where the polar head groups of the phospholipids make the peripheral domain of the membrane and hydrophobic tail makes the transmembrane domain of the membrane.

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