Organelle Diagram Structure Function Animal Plant Visible cell? cell? under a light microscope Nucleus The nucleus is the Contains nearly Yes Yes Yes largest organelle all of a cells (10-20m diameter) genetic Roughly spherical. material; Surrounded by a instructions for double membrane making proteins called the nuclear Controls protein envelope synthesis (makes The nuclear mRNA) envelope contains openings called nuclear pores. Outer membrane joins up to the endoplasmic reticulum Nucleolus makes The nucleoplasm RNA and Nucleolus contains chromatin Ribsosmes. (DNA + histones) These pass into which can be seen the cytoplasm as dark blobs or through the fibre.) nuclear pores Nucleolus is not surrounded by A membrane Dense spherical structure inside the nucleus Ribosome Rough endoplasmic reticulum Smooth endoplasmic reticulum
Organelle Diagram Structure Function Animal cell? Plant cell? Visible under a light microscope Nucleus Nucleolus The nucleus is the largest organelle (10-20m diameter) Roughly spherical. Surrounded by a double membrane called the nuclear envelope The nuclear envelope contains openings called nuclear pores. Outer membrane joins up to the endoplasmic reticulum The nucleoplasm contains chromatin (DNA + histones) which can be seen as dark blobs or fibre.) Nucleolus is not surrounded by A membrane Dense spherical structure inside the nucleus Contains nearly all of a cells genetic material; instructions for making proteins Controls protein synthesis (makes mRNA) Nucleolus makes RNA and Ribsosmes. These pass into the cytoplasm through the nuclear pores Yes Yes Yes Ribosome Rough endoplasmic reticulum Smooth endoplasmic reticulum