Waterproof surfaces like the cuticle of a leaf and the protective covering of an insect's body are:
Correct answer: B. Waxes
- A. Phospholipids
- B. Waxes
- C. Terpenoids
- D. Acylglycerols
Explanation
The correct answer is waxes. Waxes serve as a protective coating because they are hydrophobic, making surfaces waterproof. This property makes them ideal for the cuticles of leaves and the exoskeletons of insects, providing a barrier against water loss and environmental factors. Phospholipids, while essential for cell membranes, do not provide a waterproof coating. Terpenoids are more related to plant pigments and scents rather than waterproofing. Acylglycerols, commonly known as fats and oils, are primarily involved in energy storage rather than forming protective barriers.
Last updated
About Biological Molecules
The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
Practise Biological Molecules
1,790 free Biological Molecules MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A common carbohydrate composed of glucose and fructose joined by a linkage between C-1 of glucose and C-2 of fructose is:
A complex aminoacid subunits is called?
A compound produced as a result of a chemical reaction of an alcohol with an acid, where a water molecule is released, is called:
A compound produced as a result of a chemical reaction of an alcohol with an acid in which water molecule is released is called_.
A dipeptide glycylalanine consists of: