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sciduck wrote:Yeah, same (i guessed).
What does the MMR vaccine protect against?

NeilMehta wrote:

sciduck wrote:Yeah, same (i guessed).
What does the MMR vaccine protect against?

exactly what it stands for: measles, mumps, and rubella question: why can't viruses be considered living?

Alex-RCHS wrote:It's been a week, I assume it's okay if I post:

A microscope objective has these inscriptions:
PlanApo
60x/1.3
WD=.21
DIN

The ocular has these inscriptions:
12x/14

1. What is the magnification of a microscope that is using this objective and this ocular?
2. What is the field diameter of said microscope?
3. Does this microscope use oil immersion? How do you know?
4. What does WD=.21 mean?
5. What does PlanApo mean?
6. Optional bonus: What is missing on the objective inscription? What does DIN mean?

Alex-RCHS wrote:Nice!

a couple notes (Click to Show Hidden Text)

1. Great!
2. I made a mistake here. I meant to put 12x/[b]15[/b] on the ocular, instead of 12x/14. Anyway, the field diameter, in mm is the Field of view number divided by the objective mag. The FOV # is always next to the ocular magnification, so the field diameter is14/60 mm. Unfortunately, due to my typo, that's a repeating decimal...  :oops:  Sorry.
3. The answer is yes. To achieve a numerical aperture >1 would require oil immersion.
4. Correct!
5. PlanApo refers to the correction for aberrations. Plan = complete flat-field correction, Apo(chromatic) = high quality correction for chromatic aberration. 
6. Both correct! 6 was hard, good job.

Your turn!

wingsofdawn wrote:

Alex-RCHS wrote:Nice!

a couple notes (Click to Show Hidden Text)

1. Great!
2. I made a mistake here. I meant to put 12x/[b]15[/b] on the ocular, instead of 12x/14. Anyway, the field diameter, in mm is the Field of view number divided by the objective mag. The FOV # is always next to the ocular magnification, so the field diameter is14/60 mm. Unfortunately, due to my typo, that's a repeating decimal...  :oops:  Sorry.
3. The answer is yes. To achieve a numerical aperture >1 would require oil immersion.
4. Correct!
5. PlanApo refers to the correction for aberrations. Plan = complete flat-field correction, Apo(chromatic) = high quality correction for chromatic aberration. 
6. Both correct! 6 was hard, good job.

Your turn!

Ok, I kind of suck at microscopy atm, so I need to study that! Anyways...

1: Name a unique characteristic of an amoeba, paramecium, and (my favorite) a eugelna
2: What type of microbes are they classified as?
3: Are they Eukaryotic or Prokaryotic?
4: How do each affect humans?

1. amoeba: has pseudopodia, paramecium: has a macronucleus and a micronucleus, euglena (they're cute, aren't they?): has chloroplasts and therefore are photosynthetic.
2. protozoans
3. eukaryotic
4. amoeba: certain types causes disease in humans. paramecium: uhh not really sure about this one. I guess they are near the bottom of the food chain and are sources of food for animals that humans eat (ex. fish). euglena: they produce oxygen through photosynthesis, which is essential for humans.

mangothecat wrote:

wingsofdawn wrote: Ok, I kind of suck at microscopy atm, so I need to study that! Anyways...

1: Name a unique characteristic of an amoeba, paramecium, and (my favorite) a eugelna
2: What type of microbes are they classified as?
3: Are they Eukaryotic or Prokaryotic?
4: How do each affect humans?

answer (Click to Show Hidden Text)

1. amoeba: has pseudopodia, paramecium: has a macronucleus and a micronucleus, euglena (they're cute, aren't they?): has chloroplasts and therefore are photosynthetic.
2. protozoans
3. eukaryotic
4. amoeba: certain types causes disease in humans. paramecium: uhh not really sure about this one. I guess they are near the bottom of the food chain and are sources of food for animals that humans eat (ex. fish). euglena: they produce oxygen through photosynthesis, which is essential for humans.