Download 3-1 Reading Study Questions

Name __________________ Date _________ Number ______(Circle period) A B C D E
Chapter 3 Section 1 Reading Study Questions (pages 73-78)
1. ______ ________ helps multicellular organisms grow,
develop, repair themselves, & reproduce.
2. The _________ material of a cell contains information for
the cell's growth.
3. The genetic material in cells is contained in ________
molecules.
4. DNA is a ________ that contains information from an
organism's growth & development.
5. Most of the DNA in a eukaryotic cell is located in the
______________.
6. DNA is wrapped around proteins like thread around a spool
& compacted into structures called ________________.
7. Humans have _______ chromosomes.
8. Ferns have more that ___________ chromosomes.
9. Humans have ___________ pairs of chromosomes
10. A tree, an ant, and you all started out as ___________ cells.
11. In multicellular organisms , cell __________ is essential for
reproduction.
12. Cell division is essential for reproduction, growth,
development and __________.
13. ____________ cells are replaced by new cells.
14. The cells that make up the lining of your throat have a life
span of only a few _______
15. The ________ of cells in a large and small organism are the
same.
16. Adult humans have about ____________ trillion cells
17. As an organism grows the __________ of cells increases.
18. Skin cells and nerve cells are examples of __________ cells.
19. All cells in an organism have the same ______________
material.
20. A cut or broken bone is repaired by
_____________________
21. The human body is made up of about __________ different
types of cells.
22. Cell division makes new cells to replace __________ or
aging cells.
23. Cells in an organism are replaced at different __________
24. Every minute or so your skin replaces __________ of cells
25. Embryos start out as a ___________ cell.
26. A replicated chromosome consists of two ________.