Lesson 2.2 Crossword
Across
1. | the solid or gel-like substance that surrounds a typical cell |
7. | the membrane that defines the outer shell of a cell |
10. | a set of three bases in DNA or RNA that codes for one amino acid |
12. | molecules with a hollow central pore that allows water or small, charged particles of certain substances to pass into or out of the cells |
13. | the enzyme that makes an RNA molecule complementary to a gene on DNA |
14. | a network of proteins that defines the shape of a cell and gives it mechanical strength |
15. | very large enzymes that make polypeptides |
Down
2. | finger-like extensions that increase the surface area of a cell |
3. | proteins with carbohydrate groups attached |
4. | organelles in the cytoplasm that make ATP |
5. | short cylinders made of nine triplets of parallel microtubules |
6. | the division of a cell nucleus and chromosomes into two nuclei, each with its own set of identical chromosomes |
8. | the part of the cell that contains everything inside the cell membrane except the nucleus |
9. | a hair-like projection that actively flexes back and forth to move fluid or mucus across the outside of a cell |
11. | a rounded or oval mass of protoplasm within the cytoplasm of a cell that contains the cell's DNA and is bounded by a membrane |