Cell Wall - , that is, they contain more than one nucleus....

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Cell Wall The cell wall functions to support and protect the cell. Plants have cell walls composed of cellulose ; fungi have walls composed of chitin . The cell walls of these onion skin cells can be easily seen. Nucleus The nuclei can be seen in the photograph of human cheek cells below. The nucleus contains DNA . Recall that DNA contains instructions needed to produce proteins that control metabolism and other cell functions. One nucleus can serve a limited amount of cytoplasm , so large cells are often multinucleate
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: , that is, they contain more than one nucleus. Teased skeletal muscle X 200 Note the many nuclei visible in the cell on the left. Chromatin is the grainy threadlike DNA. During cell division, the nuclear membrane disintegrates and the DNA becomes coiled producing visible structures called chromosomes . The material within the nucleus is referred to as the nucleoplasm . A double membrane ( nuclear envelope ) surrounds the nucleus. Nuclear pores allow materials to pass into and out of the nucleus....
View Full Document

Page1 / 2

Cell Wall - , that is, they contain more than one nucleus....

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online