Answer:
Signal detection theory
Explanation:
Signal detection theory predicts the relationship of how well a signal is detected and the psychological state of the observer. This theory evaluates how and when the presence of a faint stimulus ("signal") amid background stimulation ("noise") is detected. Assumes that there is no single absolute threshold and that detection depends partly on a person's experience, expectations, motivation, and level of fatigue
Answer:
The culture medium must be selective
Explanation:
Selective media are the media that have those ingredients which favor the growth of a particular bacterium and inhibit the growth of unwanted bacteria. So a selective media is used to selectively grow a particular micro-organism.
For example, MacConkey agar is a selective media that is used to isolate gram-negative enteric bacteria based on lactose fermenting ability. It contains ingredients like bile salt and crystal violet which inhibits the growth of gram-positive bacteria therefore it only allows the growth of gram-negative bacteria.
<em>Staphylococcus</em> <em>epidermidis</em> is a gram-positive bacteria and <em>E.coli</em> is gram-negative enteric bacteria so MacConkey agar can be used to select E.coli over <em>Staphylococcus</em> <em>epidermidis</em>. So the correct answer is the culture media must be selective.
Grizzly Bears are found in many different habitats, from dense forests to Sub Alpine meadows, open plains and Arctic Tundra. In North America, Grizzly Bears are found in western Canada, Alaska, Wyoming, Montana, Idaho and potentially a small population in Washington.
I hope this helped!
The answer is D. Surface
Waves. The wave pass through the medium for
example a guitar string when you strum the guitar as a result of the particles
bumping back and forth on each other and the interactions of both particles in
the medium cause the sound wave to travel through the medium.
