Lipids are
A - VCE - SSCE Biology - Question 6 - 2009 - Paper 1
Question 6
Lipids are
A. used as an energy source.
B. involved in active transport.
C. part of glycoprotein molecules.
D. transported by rough endoplasmic reticulum.
Worked Solution & Example Answer:Lipids are
A - VCE - SSCE Biology - Question 6 - 2009 - Paper 1
Step 1
A. used as an energy source.
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Answer
Lipids are indeed utilized as an energy source in the body. They provide more than twice the energy per gram compared to carbohydrates and proteins, making them a vital component of energy metabolism.
Step 2
B. involved in active transport.
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Answer
Lipids themselves are not typically involved in active transport, which generally refers to the movement of ions and molecules across cell membranes via transport proteins requiring energy.
Step 3
C. part of glycoprotein molecules.
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Answer
While lipids are not directly part of glycoprotein molecules, they can be components of glycolipids. Glycoproteins consist of proteins with carbohydrate groups attached, but lipids can be involved in cellular membranes facilitating the functioning of glycoproteins.
Step 4
D. transported by rough endoplasmic reticulum.
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Answer
The rough endoplasmic reticulum (RER) is primarily involved in the synthesis and transport of proteins. While lipids are synthesized in the smooth endoplasmic reticulum (SER), they are not transported by the RER.
