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1. a phospholipid layer that covers a cell’s surface and acts as a barrier between the
inside of a cell and the cell’s environment
2. the theory that states that all living things are made up of cells, that cells are
the basic units of organisms, that each cell in a multicellular organism has a
specific job, and that cells come only from existing cells
3. a rigid structure that surrounds the cell membrane and provides support to the cell
4. a large cavity or sac that is found in plant cells or protozoans and that contains
air or partially digested food
5. an organelle found in plant and algae cells where photosynthesis occurs
6. a hairlike structure arranged in tightly packed rows that projects from the surface
of some cells
7. the region of the cell within the membrane that includes the fluid, the
cytoskeleton, and all of the organelles except the nucleus
8. the cytoplasmic network of protein filaments that plays an essential role in cell
movement, shape, and division
9. a microscope that focuses a beam of electrons to magnify objects
10. a system of membranes that is found in a cell's cytoplasm and that assists in the
production, processing, and transport of proteins and in the production of lipids
11. an organism made up of cells that have a nucleus enclosed by a membrane, multiple
chromosomes, and a mitotic cycle; eukaryotes include protists, animals, plants, and
fungi but not archaea or bacteria
12. a long, hairlike structure that grows out of a cell and enables the cell to move
13. a cell organelle that helps make and package materials to be transported out of
the cell
14. a microscope that uses a beam of visible light passing through one or more lenses
to magnify an object
15. the basic structure of a biological membrane, composed of two layers of
phospholipids
16. a cell organelle that contains digestive enzymes
17. the increase of an object's apparent size by using lenses or mirrors
18. in eukaryotic cells, the cell organelle that is surrounded by two membranes and
that is the site of cellular respiration, which produces ATP
19. in a eukaryotic cell, a membrane-bound organelle that contains the cell’s DNA and
that has a role in processes such as growth, metabolism, and reproduction
20. one of the small bodies that are found in the cytoplasm of a cell and that are
specialized to perform a specific function
21. a lipid that contains phosphorus and that is a structural component in cell
membranes
22. a single-celled organism that does not have a nucleus or membrane-bound
organelles; examples are archaea and bacteria
23. in microscopes, the ability to form images with fine detail
24. a cell organelle composed of RNA and protein; the site of protein synthesis
25. uses a needle-like probe to measure differences in voltage caused by electrons
that leak, or tunnel, from the surface of the object being viewed
26. a small cavity or sac that contains materials in a eukaryotic cell; forms when
part of the cell membrane surrounds the materials to be taken into the cell or
transported within the cell
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