Chemicals that destroy practically all microorganisms.
What are the measuring techniques of the measuring instruments?
Science laboratories use lots of tools to measure volumes. Some of these include (in order from least accurate to most accurate)
Beakers Flasks Graduated Cylinders Pipettes
There are many more measuring tools, this is just a small taste.
But I would say that a beaker is most similar to a measuring cup.
Facilitated diffusion and active transport?
Facilitated diffusion = down concentration gradient, it just uses a carrier protein (doesn't need energy)
Active transport =goes UP concentration gradient with the help of a carrier protein and ENERGY
Is diffusion an example of active transport?
No, diffusion is passive transport. Active transport would be when there are actual proteins and structures involved in the transportation of molecules/chemicals/etc.. A sure sign is that all of these (that I know of) require ATP.
An example would be the Sodium-Potassium Pump located along one's neurons which actively pumps (aka. transports) sodium and potassium back and forth across the membrane to build up potential charge. This is how "signals" are sent down neurons and around the body.
What is a disk diffusion test?
In the disk diffusion test (also called the Kirby Bauer test), disks containing an antimicrobial agent are placed on the surface of an agar plate containing a medium that has been inoculated with the disease agent being tested, which will grow and fill the disk. The antimicrobial agent diffuses into the medium, killing some of the disease agent around where the anitmicrobial agent was innoculated, depending on how susceptible the disease agent is to the antimicrobial agent.
The size of the area cleared of the disease agent shows how effective the antimicrobial agent is.
What does diffusion and active transport have in common?
They both transport ions, sugars, and salts across the membrane. Both facilitated diffusion and active transport use proteins as their means of transporting their materials to and from the cell.
Why is disk diffusion technique in Kirby Bauer agar not a perfect indication of how the drug will perform in vivo?
Variables such as the effect of serum, the body's pH, and ionic content, and Oxygen level, how the drug is metabolized and excreted; as well as the side effects of the drug
What technique can be used to measure cell activity like a change in membrane potential?
it is patch lamp
How is the active transport different from diffusion?
Active transport moves material across a cell membrane against a concentration difference and does not require energy. Where diffusion is the process which molecules tend to move from an area where they are more concentrated, to an area where they are less concentrated.