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More cell review. Best Microscopes For? View living organisms under 1000 X? View surfaces, dead organisms 1000X - 1,000,000X? View internal structures.

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Presentation on theme: "More cell review. Best Microscopes For? View living organisms under 1000 X? View surfaces, dead organisms 1000X - 1,000,000X? View internal structures."— Presentation transcript:

1 More cell review

2 Best Microscopes For? View living organisms under 1000 X? View surfaces, dead organisms 1000X - 1,000,000X? View internal structures up to 1,000,000 X? LM SEM TEM

3 Matching: 1._____Parfocal 2. ____Clarity 3..____Field Diameter 4.____Magnification A. width of view B. stays in focus even if change objectives C. apparent increase in size D. resolving power; distinguish 2 different objects

4 Matching: 1.__B_Parfocal 2. __D_Clarity 3..__A__Field Diameter 4.__C__Magnification A. width of view B. stays in focus even if change objectives C. apparent increase in size D. resolving power; distinguish 2 different objects

5 Microscope How To’s: 2 places to carry? Objective to first view? Where stage is to first view a slide? Arm and base Lowest (4X) Closest to objective

6 How do you find? Total magnification? How does the field diameter change as the magnification gets larger? Multiply eyepiece by objective magnifications. DECREASES in the same proportion (EX: if the magnification is 10X’s greater, the diameter is 10X’s smaller)

7 How do you make a wet mount? Tools? Object on Slide Eye dropper of water Coverslip on top of water drop

8 Put metric prefixes in order: from km to Å Kids have dropped over dead converting metrics meeting nice angels Km hm dkm m dm cm mm µm nm Å 3

9 Convert: 5 mm = _____µm = _____nm 6 mm = ____________ nm 55 nm = ___________ Å 100 cm = ________mm = _______µm

10 Convert: 5mm = 5000µm = 5,000,000nm 6 mm = ____600,000__ nm 55 nm = ___550___Å 100 cm = __1000__mm =__100,000__µm

11 What happens… To the surface area to volume ratio when a cell gets larger? The ratio decreases

12 Cell sizes Largest? Ostrich egg Smallest? mycoplasmas

13 Comparing PROKARYOTES Nucleoid Capsule Pili No membraned organelles EUKARYOTES Nucleus No capsule No pili Membraned organelles (like mitochondria, chloroplasts)

14 What 2 structures do… Plant cells have that animal cells do not? Chloroplasts and cell walls

15 What 2 structures… Do animal cells have that plant cells do not? Centrioles and cilia/flagella

16 What type of organisms have? Ribosomes? All (prokaryotic, plant and animal) Plasma membranes? All (prokaryotic, plant and animal)

17 DNA Where would you find it in a cell? In nucleus How is chromatin related to DNA? Chromatin is DNA + protein

18 ER How is Rough ER different from Smooth ER? –In structure? –Rough ER has ribosomes embedded in it, smooth ER does not –In function? –Rough ER carries materials to ribosomes to assemble amino acids into proteins, smooth ER makes lipids

19 How do vacuoles differ? In plants? Large central vacuole In animals? Smaller (usually lysosomes around them)

20 Put in order from largest to smallest in an animal cell: Mitochondrion ribosomes nucleus lysosome vesicle Nucleus Mitochondrion Lysosome Vesicle ribosome

21 How are cilia and flagella different? Length? Cilia are shorter and flagella are longer Number? Cilia are very numerous and flagella usually only one or a few

22 How are they different? Golgi Apparatus Attached or not connected? Repackage proteins or carry materials? ER Attached or not connected? Repackage proteins or carry materials?

23 How are they different? Golgi Apparatus not connected Repackage proteins ER Attached carry materials

24 In animal or plant cell? Mitochondrion? In Both animal and plant cells Chloroplasts? Only in plant cells

25 In animal or plant cell? Mitochondrion? In Both animal and plant cells Chloroplasts? Only in plant cells

26 Chloroplast or Mitochondrion? Wavy membrane interior? Mitochondrion Green Chloroplast Site of photosynthesis Chloroplast Powerhouse mitochondrion

27 Trace the path of protein. Which happens first, second…? A. Vesicles carry protein to Golgi. B. Proteins are assembled in ER C. Proteins are stored in the cell D. Golgi repackages the proteins ANSWER: B, A, D, C See diagram on the next slide

28 Path of Proteins

29 Cytoskeleton What are the three types of cytoskeleton? Microtubules microfilaments centrioles What is the purpose of centrioles? Cell division What are some jobs of microtubules? Support, movement

30 Which cell covering? Is around all types of cells (prokaryotes and eukaryotes)? Plasma membrane Is around only plant and prokaryotes cells? Cell wall What covering is also outside the prokaryotic cell? Capsule

31 Cell Theory What scientist made the first microscope? Leewenhoek Who first coined the word “cells?” Hooke

32 Cell Theory Fill in the blanks: All cells come from: Pre-existing cells The basic unit of life is a: Cell


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