Biology Cells
Name: ______________________ Date: ____________
Write the letter of the matching definition next to each term.
1. unicellular
A. The organic process by which food is converted into substances that can be absorbed into the body
2. colonial
B. Part of an organism consisting of an aggregate of cells having a similar structure and function (plural)
3. multicellular
C. Having or consisting of a single cell
4. tissues
D. Consisting of many cells
5. organs
E. The metabolic processes whereby certain organisms obtain energy from organic molecules
6. respiration
F. Selectively permeable
7. excretion
G. The protoplasm of a cell excluding the nucleus
8. nucleus
H. An architectural partition with a height and length greater than its thickness
9. cytoplasm
I. The bodily process of discharging waste matter
10. nucleolus
J. A government agency or instrument devoted to the performance of some specific function (plural)
11. semipermeable
K. The readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins
12. membrane
L. The ___ that ___ form the fundamental structural and functional units of all living organisms
13. wall
M. Plastid containing ___ and other pigments
14. chromatin
N. A pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants
15. reticulum
O. An organelle in the cytoplasm of a living cell
16. ribosome
P. A small round body of protein in a cell ___
17. chloroplast
Q. An organelle found in the cytoplasm of most cells
18. lysosome
R. The process of producing a chemical compound
19. vacuole
S. A tiny cavity filled with fluid in the cytoplasm of a cell
20. digestion
T. A resident of a ___
21. synthesis
U. Any fine network
22. celltheory
V. Center of an atom or a cell