1. What type of microscope can reveal details1000 times smaller than those visible in light microscopes. Electron microscopes

2. Name an organisms classified as a prokaryotes. bacteria

3. An ____________is a group of organs that work together to perform a specific function. organ system

4. A group of similar cells that perform a particular function is called tissue

5. Which organelle would you expect to find in plant cells but not animal cells? chloroplast

6. All cells contain 3 things. What are they Genetic material (DNA), Cell membrane and cytoplasm

7. Which means of particle transport requires input of energy from the cell? active transport

8. What structures are involved in cell movement? microtubules and microfilaments

9. Who used a compound microscope to see chambers within cork and named them “cells”? Robert Hooke

10. Unlike the cell membrane, the ____________is a rigid structure. cell wall

11. __________ occurs because molecules constantly move and collide with each other. diffusion

12. What type of microscope can produce three- dimensional images of a cell’s surface? scanning electron microscope

13. What term describes the relatively constant internal physical conditions of an organism? homeostasis

14. German physician, who concluded that new cells can be produced only from the division of existing cells. Rudolf Virchow

15. The function of the ________________regulate s the movement of materials into and out of the cell cell membrane

16. Which organelle converts the chemical energy stored in food into compounds that are more convenient for the cell to use? mitochondrion

17. What advance in technology made the discovery of cells possible? the microscope

18. German botanist, who concluded that all plants are made of cells. Matthias Schleiden

19. He used a simple microscope to observe pond water and saw microorganism under greater details. Anton van Leeuwenhoek

20. function of the ___________helps a cell keep its shape cytoskeleton

21. The primary function of the ____________ is to support and protect the cell. cell wall

22. The cell membrane contains channels and pumps that help move materials from one side to the other. What are these channels and pumps made of? proteins

23. Which organelle breaks down organelles that are no longer useful? lysosome

24. Which 2 organelles are involved in energy conversion? mitochondria and chloroplasts

25. list the levels of organization in a multicellular organism from the simplest level to the most complex level? cell, tissue, organ, organ system

26. The diffusion of water across a selectively permeable membrane is called osmosis

27. Which structure makes proteins using coded instructions that come from the nucleus? ribosome

28. Ribosomes that synthesize proteins are found on the __________ endoplasmic reticulum. rough

29. A ______________microscope allows light to pass through a specimen and focuses it using two lenses to form an image. light

30. Moving materials from an area of low concentration to an area of high concentration requires ______ transport. active

31. What are the three major principles of the cell theory? 1. All living things are made up of cells. 2. Cells are the basic units of structure and function in living things. 3. New cells are produced from existing cells.

32. What provides the energy for active transport to take place? ATP Adenosine triphosphate

33. Describe the arrangement of the molecules in the phospholipid bilayer of the cell membrane.(include hydrophilic and hydrophobic) The molecules are arranged in a double layer. The phosphate heads of the molecules form the outer surfaces and are hydrophilic( water-liking, and the fatty acid tails form the inner part of the membrane and are hydrophobic (water-fearing).