What is meant by tertiary structure of proteins?
What is meant by tertiary structure of proteins?

What is meant by tertiary structure of proteins?
What are macromolecules? Give examples.
What is a mesosome in a prokaryotic cell? Mention the functions that it performs.
What is a centromere? How does the position of centromere form the basis of classification of chromosomes. Support your answer with a diagram showing the position of centromere on different types of chromosomes.
Describe the structure of the following with the help of labelled diagrams. (i) Nucleus (ii) Centrosome
Both lysosomes and vacuoles are endomembrane structures, yet they differ in terms of their functions. Comment.
What are nuclear pores? State their function.
Cell is the basic unit of life. Discuss in brief.
Multicellular organisms have division of labour. Explain.
What are the characteristics of prokaryotic cells?
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