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Cell review. 1. A bacteria can change the types of proteins it has in its membrane depending on which one it detects o the outside env’t. What part of the cell recognizes different substances on the outside env’t?. ER Cell membrane Nucleus lysosome. B.

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1. A bacteria can change the types of proteins it has in its membrane depending on which one it detects o the outside env’t. What part of the cell recognizes different substances on the outside env’t?

  • ER

  • Cell membrane

  • Nucleus

  • lysosome

B


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2. What came first, that we use in class, in the scientific discovery of living things?

  • Light microscope

  • Cell theory

  • Electron microscope

  • Model of DNA

A





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C makes it look rough?

A student was studying the responses of cells to solutions of varying salt concentrations. Which solution below would cause no change in cell size?

B

A

D

C



Pro s do not have a nucleus l.jpg
Pro’s do not have a nucleus makes it look rough?

8. What is the difference between a prokaryotic cell and a eukaryotic cell?


Put the coverslip on at an angle l.jpg
Put the coverslip on at an angle makes it look rough?

9. What is the best way to put on a coverslip to avoid getting air bubbles?


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wilt makes it look rough?

10. If a plant cell has lost water what will the plant tend to do?


Some things can get through and some cannot l.jpg
Some things can get through and some cannot makes it look rough?

11. Why is the cell membrane called semi-permeable?


12 what helps this algae move l.jpg
12. What helps this algae move? makes it look rough?

flagella



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14. What kind of transport moves substances against the concentration gradient(against the flow of traffic)

Active transport



16 what does the nucleus do l.jpg
16. What does the nucleus do? its rigid structure.

Controls all the day to day activities


17 what does the mitochondria do l.jpg
17. What does the mitochondria do? its rigid structure.

Makes energy to power the cell


18 what does the lysosome do l.jpg
18. What does the lysosome do? its rigid structure.

Digests molecules in the cell that are worn out or not working anymore


19 what is diffusion l.jpg
19. What is diffusion? its rigid structure.

Movement of molecules from area of high concentration to low concentration.


20 what are the 3 parts of the cell theory l.jpg
20. What are the 3 parts of the cell theory? its rigid structure.

  • All living things are made of cells

  • Cells are the basic unit of structure and function

  • All cells come from pre-existing cells



22 what theory was a direct result of the microscope being invented l.jpg
22. What theory was a direct result of the microscope being invented?

  • Theory of natural selection

  • Gaia thoery

  • Theory of independent assortment

  • Cell theory

D



24 what is an important function of the cell part you see below l.jpg
24. What is an important function of the cell part you see below?

  • Maintaining homeostasis

  • Controlling what goes out and what goes in



26 describe what is happening in the picture l.jpg
26. Describe what is happening in the picture? below?

Plasmolysis- water has left the plant cell, and all the organelles are smooshed up in the middle of the cell.


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