Cell Biology and Structure

Yes, it is correct. Carbohydrates are of three types, one of which is cellulose. It is present in the cell wall of plant cells.

This is the correct option as red blood cells are round and biconcave in shape.

This is the correct option. Golgi complex is not a layer of the cell envelope. 

This is the correct option. Centrioles are present in animal cells, but absent in almost all plant cells.

This is the correct option as this statement is false regarding rough endoplasmic reticulum. Smooth endoplasmic reticulum is the major site for synthesis of lipids.

Mitochondria and peroxisomes are not considered parts of the endomembrane system.

This is the correct option. Ribosomes are the non-membrane bound organelles that are found in prokaryotic cells.

This is the correct option. Golgi apparatus is an important site of formation of glycoproteins and glycolipids.

 Cells become cancerous by accumulation of genetic damage.

Precancerous cells have an abnormal shape, their nuclei become unusually large and a typically shaped and they contain increased amount of DNA.

Tumor cells grow uncontrollably into an undifferentiated mass that sometimes metastasize.

Cell death is a mechanism that normal cells use when cell damage cannot be repaired.

Meristematic tissues have immature cells, capable of division.

Nucleus is not a part of cytoplasm. Cytoplasm includes only cytosol and cell organelles.

RER looks rough when viewed under a microscope due to the presence of ribosomes on its surface.