Cells Crossword

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					Introduction to Cells unit                                                         Name___________________
                                                                                                 1.unicellular organism
                                                                                                 lacking membrane bound
                                                                                                 nucleus and organelles.
                                                                                                 Bacteria are Prokaryotes.
                                                                                                 3. membrane continuous
                                                                                                 with the nuclear envelope,
                                                                                                 responsible for the
                                                                                                 modification of proteins.
                                                                                                 The rough RR has
                                                                                                 Ribosomes attached that
                                                                                                 synthesize the proteins to
                                                                                                 be modified. The smooth
                                                                                                 ER has no ribosomes
                                                                                                 attached and is responsible
                                                                                                 for making phospholipids,
                                                                                                 steroids and helps in
                                                                                                 detoxification of the cell.
                                                                                                 5. – a membrane bound
                                                                                                 organelle that can function
                                                                                                 to remove unwanted
                                                                                                 structural debris, isolate
                                                                                                 materials that might be
                                                                                                 harmful to the cell, contain
                                                                                                 waste products, maintain
                                                                                                 an internal pH, storage or
                                                                                                 large molecules such as
                                                                                                 starch, export unwanted
                                                                                                 substances from the cell,
                                                                                                 allow the cell to change
                                                                                                 shape. In plants it is
                                                                                                 important in maintaining
                                                                                                 cell shape by increasing the
                                                                                                 cells internal pressure.
                                                                                                 8. - a double membrane
                                                                                                 bound organelle that is
                                                                                                 responsible for cellular
                                                                                                 respiration. Mitochondria
                                                                                                 contain their own DNA.
                                                                                                 12. –hollow tube like
                                                                                                 structures, made of protein,
in the cytoplasm of eukaryotic cells, providing structural support and assisting in cellular locomotion and transport.
13. – The largest of the membrane-bounded organelles which characterize eukaryotic cells; it is thought of as the control
center since it contains the bulk of the cell's genetic information in the form of deoxyribonucleic acid (DNA).
15. – membrane bound sacs of digestive enzymes, they break down materials taken into the cell from the outside, as well
as break down parts of the cell that are no longer functioning or needed.
16. – a group of tissues that together perform closely related functions.
21. -A complex carbohydrate, (C6H10O5)n, that is composed of glucose units, forms the main constituent of the cell wall
in most plants, and is important in the manufacture of numerous products, such as paper, textiles, pharmaceuticals, and
24. – A differentiated structure within a eukaryotic cell, such as a mitochondrion, vacuole, or chloroplast, that performs a
specific function.
27. – A group of cells that together perform a function, and are similar in shape. There are four basic types of tissue:
muscle, nerve, epidermal, and connective.
28. -green pigments that are found in the chloroplasts of plants and in other photosynthetic organisms such as
cyanobacteria. (C55H72MgN4O5)
30. -The semi permeable membrane that encloses the cytoplasm of a cell. Also called plasma membrane. Made up of a
phospholipid bi-layer and proteins.

2. - A device for forming greatly magnified images of objects by means of electrons. Electron Microscopes allow the
visual examination of structures too small to be resolved with ordinary compound or light microscopes.
4. – an organism made up of more than one cell.
6. – an organism made up of a single cell.
7. –Material visible within the nucleus; made up of nucleic acids and proteins. Stains readily with basic dyes and
condenses to form chromosomes during cell division.
9. -Short, hair like structures that are found on the outside of some cells. Capable of beating in unison, cilia perform a
variety of functions, including providing the means of locomotion for some protozoans, moving mammalian ova (eggs)
through oviducts, generating water currents to carry food and oxygen past the gills of clams, and cleaning debris from
mammalian respiratory systems.
10. – area of the nucleus responsible for making ribosomes. Appears as a dark staining dot within the nucleus of a cell.
11. - The double-layered membrane enclosing the nucleus of a cell. Also called nuclear membrane.
14. - Tiny particle, the site of protein synthesis, that is present in large numbers in living cells. They can be found free in
the cytoplasm and attached to the endoplasmic reticulum. They are made up of protein and RNA.
17. – membrane bound organelle that sorts, modifies and packages macromolecules such as proteins for delivery to other
parts of the cell.
18. - The smallest structural unit of an organism that is capable of independent functioning, consisting of one or more
nuclei, cytoplasm, and various organelles, all surrounded by a semipermeable cell membrane.
19. – a double organelle with a double membrane found in green plants and algae. The site of Photosynthesis. Has a
green color due to the pigment chlorophyll. Chloroplasts have their own DNA. Cytoskeleton -A system of filaments found
in the cytoplasm of cells and responsible for the maintenance of and changes in cell shape, cell locomotion, movement of
various elements in the cytoplasm, cell division, chromosome organization and movement, and the adhesion of a cell to a
surface or to other cells.
20. -a group of organs that work together to perform a specific function.
22. -a barrel shaped microtubule structure found in most animal cells and algae. Centrioles are very important in the cell
division process.
23. -The rigid outer covering of a typical plant cell, composed mainly of cellulose and lying outside the cell membrane.
Animal cells do not have cell walls. It is the cell walls that give plant stems and wood their stiffness.
25. – Ring of DNA found in prokaryotes.
26. - Scientific theory that states: All living organisms are composed of one or more cells. Cells are the most basic unit
for function and structure of all organisms. All cells come from cells that already exist.
29. –whip-like structure used for locomotion in single celled organisms and sex cells.