Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Bio 210 Lab quiz 1
| Question | Answer |
|---|---|
| What is the function of the iris diaphragm? | regulates the amount of light on the stage |
| Define Par focal | a subject/slide is in focus with one lens it will be in focus with all of the lenses |
| Doe the oil immersion objective lens need to touch the immersion oil? | Yes |
| Does the field of vision/view increase or decrease when using the higher objective lenses? | Decrease |
| Total magnification =_________ | Ocular lens magnification multiplied by objective lens magnification |
| Scientific notation uses meters as the base unit and works in powers of _______ | Ten |
| When a negative power (or exponent) is seen, the decimal point moves to the: | Left |
| Nano(meters) is represented by (give the exponent): | 10^-9 |
| Micrometers are a ________ times smaller than meters. | Million |
| What equipment will be needed/used to view a specimen that is measured in micrometers? | A microscope |
| Give one example of something measured in nanometers? | Viruses |
| What type of microscope would be necessary to view viruses? | An electron microscope |
| Organisms that must be viewed with a microscope | Microbes |
| Define Compound light microscope | contain two sets of lenses (ocular and objective) and visible light is used to view a specimen |
| What makes a phase contrast microscope different than a compound light microscope? | Contains a higher quality condenser which improves the contrast between the specimen and surrounding medium. |
| What are phase contrast microscopes used for? | View living specimens internal structures and observe motility. |
| Describe electron microscopes and what they are used for | Much larger and complex. They use electrons instead of light and are able to view viruses. |
| Transmission electron microscopes (TEM) allow what to be viewed? | Detailed internal structures can be viewed |
| Scanning electron microscopes (SEM) allow what to be viewed? | Detailed external structures to be viewed. |
| As magnification increases what should increase on the specimen, using what microscope component | More light, iris diaphragm |
| Lens paper should be used on only what? | Oil immersion lens |
| What is the function of the ocular lens? | A way to look through and view slide/specimen |
| Function of the stage | Platform to place slide on |
| Function of Fine Adjustment Knob and what lenses it is used for | Used her focusing in high power, Used for all lenses |
| Function of Coarse Adjustment Knob and what lenses it is used for | Used for focusing in lower power, only for scanning (4x) and low objective lens (10x) |
| Function of mechanical stage controls | Used to more precisely move slide |
| Function of illuminator | Source of light |
| Function of condenser | Collect all light from illuminator and focus it |
| Function of iris diaphragm | Regulate amount of light |
| Function of Objective lens | Used to view the specimen more closely |
| What is the lens power of the scanning lens? | 4x |
| What is the lens power of the low lens? | 10x |
| What is the lens power of the high lens? | 40x |
| What is the lens power of the Oil immersion lens? | 100x |
| What happens to an image when viewed in a microscope? | It is flipped, appears different than with naked eye |
| If you move a slide to the left what happens to the image in the field of view? | It moves to the right |
| If you move the slide away from you what happens to the image field of view? | It moves down |
| What happens to the image as you increase magnification? | It's more shaded |
| Name metric from base to smallest measurement | Meter, deci-, centi-, milli-, micro-, nano- |
| Name base metric measurement to largest measurement | Meter, deka-, hecto-, kilo-, mega-, giga- |
| Base= __ meter | 1 |
| 1 decimeter = ____ meter | 1/10 |
| 1 Centimeter = ___ meter | 1/100 |
| 1 millimeter = ___ meter | 1/1000 |
| What is micro in scientific notation? | 10^-6 |
| What is nano in scientific notation? | 10^-9 |
| 1 dekameter = ____ meters | 10 |
| 1 hectometer = ___ meters | 100 |
| 1 kilometer = ___ meters | 1,000 |
| 1 megameter = ___ meters | 1 million |
| 1 gigameter = ___ meters | 1 billion |
| Write 1 megameter in scientific notation | 10^6 |
| Write 1 gigameter in scientific notation | 10^9 |
| A whole number is represented with a ________ exponent of 10 | Positive |
| A fraction is represented with a __________ exponent of 10 | Negative |
| Convert whole number to fraction decimal moves | Left |
| Convert fraction to whole number decimal moves | Right |
| Examples of objects measured in micrometers | Bacteria |
| Examples of objects measured in nanometers | Viruses |
| What is microbiology? | Study of microorganisms |
| Name 5 examples of microbes | Protozoa, algae, fungi, bacteria, and viruses |
| Name 3 uses of microbes | Breakdown of waste, make foods (cheese and bread), and synthesize vitamins |
| Define pathogens | Disease causing agents |
| Who discovered The 1st antibiotic penicillin? | Alexander Fleming |
| What organism helps add oxygen to the environment and uses C02? | cyanobacteria |
| How do algae get their food? Name an example | Photosynthesis, seaweed |
| What was used to study the evolution of bacteria, map human genome, and discover antibiotics? | DNA |
| What is the name of the 4 "puzzle pieces" that compose DNA? | Nucleotides |
| Why is SAR 11 difficult to grow in a lab? | Not sure what it eats, it is built to live on very little food, may need other microbes to survive. |
Created by:
Beckster89
Popular Biology sets