Download 6th Grade Science

*Hint: The number in parentheses after each clue tells you which lesson the vocabulary word can be
found in.
Across
2. The first stage of the cell cycle that takes place before cell division occurs; the cell grows and makes a copy of
its DNA (5)
5. The diffusion of water molecules across a selectively permeable membrane (4)
7. The series of events in which a cell grows, prepares for division, and divides to form two daughter cells (5)
10. The process by which the cell membrane takes particles into the cell by changing shape and engulfing the
particles (4)
11. A substance made of two or more elements chemically combined in a specific ratio, or proportion (3)
13. The shape of a DNA molecule (3)
15. An organelle in a cell that receives proteins and other newly formed materials from the ER and packages and
distributes them (2)
18. A cell organelle which contains chemicals that break down large food particles into smaller ones that can be
reused (2)
19. An organelle in the cells of plants that captures energy from sunlight and changes it to an energy form cells
can use (2)
22. The movement of materials across a cell membrane using cellular energy (4)
23. The process by which the vacuole surrounding particles fuses with the cell membrane, forcing the contents
out of the cell (4)
24. The process by which a cell makes a copy of the DNA in its nucleus before cell division (5)
25. The process by which molecules move from an area of higher concentration to an area of lower concentration
(4)
Down
1. A pure substance that cannot be broken down into other substances by chemical or physical means (3)
3. A very large organic molecule made of carbon, oxygen, hydrogen, nitrogen, and phosphorus, that holds
instructions cells need (3)
4. An energy-rich organic compound, such as a fat, oil, or wax, that is made of carbon, hydrogen, and oxygen (3)
6. The movement of dissolved materials across a cell membrane without using cellular energy (4)
8. The thick fluid region of a cell located inside the cell membrane or between the cell membrane and nucleus (2)
9. A type of protein that speeds up a chemical reaction in a living thing (3)
12. An energy-rich organic compound, such as a sugar or starch, that is made of the elements carbon, hydrogen,
and oxygen (3)
14. Rod-shaped organelles that convert energy in food molecules to energy the cell can use to carry out its
functions (2)
16. The final stage of the cell cycle, in which the cell's cytoplasm divides, distributing material into the two
daughter cells (5)
17. A threadlike structure within a cell's nucleus that contains DNA that is passed from one generation to the next
(3)
20. Large organic molecule made of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur (3)
21. The second stage of the cell cycle during which the cell's nucleus divides into two new nuclei (5)