Science 9, Unit 1: Reproduction
Assignment 1, Cells: The Basic Units of Life
Name: ___________________________
1.
DUE: Monday, Sept.25
True or False. Answer the following by writing true or false in the space provided. 5pts
a.
________ All bacterial cells are dangerous to humans.
b. ________ Plants and Animal both have tissues.
i. Tissue: A group of similar cells that act together in the performance
of a particular function.
c.
________ Scientists no longer accept the basic principles of the “Cell Theory”
d. ________ Everyone has different DNA.
e.
________ All cells have a membrane around their nucleus.
2. Fill in the blanks. Fill in the blanks with the appropriate terms. 10pts
a.
Living things are made up of _______________.
b. List five characteristics of living things.
1.
2.
3.
4.
5.
c.
Many of nature’s simplest creatures are nothing more than a single, independently
living cell and are called ________________________ organisms.
d. Large more advanced organisms are called ______________________. These
have many different kinds of cells joined together to perform specialized tasks.
e.
Cells can be thought of as marvellous and complex miniature factories whose final
product is ______________________.
f.
The discovery of the cell was by ______________________________.
3. Definitions. Write a brief explanation for the following terms: 14pts (2pts each)
a.
Cell:
b. Cell Wall:
c.
Chromosome:
d. Deoxyribonucleic Acid (DNA):
e.
Nucleus:
f.
Photosynthesis:
g.
Protein:
4. What organelle are scientists uncertain if plant cells contain? 1pt
CROSS WORD - THE CELL
(14pts)
Across
Down
2. He discovered the cell
4. Thin layer surrounding animal cells
6. Produces ribosomes
9. Packages materials
12. Jelly-like substance in the cell
13. Breaks down material
1. What the endoplasmic reticulum does
3. Type of cell with a membrane bound nucleus
5. Where photosynthesis occurs
6. Contains the cell's information
7. Outer layer of plant cells
8. Where proteins are made
10. Powerhouse of the cell
11. Basic unit of structure and function