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Tissues
What is endoplasmic reticulum? Write its main functions.
Endoplasmic Reticulum is a membranous network, enclosing a fluid-filled lumen. Its main functions are:
(i) Synthesis of proteins (Rough ER)
(ii) Synthesis of lipids and their secretion (SER).
(iii) Secretion of enzymes and hormones inside the cell or when secreted out of the cell.
(iv) ER also produces substance for new cellular parts (especially cell membrane).
(v) ER provides internal support (mechanical support) to the cell.
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By which instrument you can see internal structure of onion peel cell?
Do different organisms have different types of basic building units ? Briefly explain.
To what the shape and size of cells are related to?
What constitute the basic building block of the cell?
Can you find out more names of some of the unicellular organisms and fungi, other than given in your book?
Name two single celled animals.
Draw diagram of onion peel as it is seen through microscope.
Draw labelled diagram of compound microscope.
Name three features which are found almost in every cell.
Which is the outer most covering of an animal cell?
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