1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
navik [9.2K]
3 years ago
15

State Koch's Postulates ​

Biology
1 answer:
Troyanec [42]3 years ago
7 0

Answer:

Robert Hermann Koch was a physician, he gave 4 postulates on relationship between disease and their causative agent.

Explanation

Kochs pastulates are as follows-

  • Causative agents /microorganism always present in diseased individual, but should not present in healthy one.  
  • These causative microorganisms can be isolated and cultured.
  • That cultured microorganism again can cause disease if transferred into healthy individual, and again can be reisolated and cultured.
  • Reisolated microorganisms from this diseased individual will be same and identical as cultured and isolated from previous diseased individual.

You might be interested in
What are the charges both inside and outside of the neuron before you click the stimulate neuron button?
evablogger [386]

Answer:

The charges inside and outside of the neuron before receiving a stimulus are negative and positive, respectively, which corresponds to the transmembrane rest potential.

Explanation:

Neuron is the specialized cell of the nervous system in charge of transmitting electrical impulses. The generation of a nerve impulse in the form of an electric current is due to a change in the transmembrane potential.

<u>Outside the neuron cell, electrical charges are predominantly positive, and the ion with the highest concentration is sodium. In the intracellular space, a great quantity of proteins provide negative charge, and there is a predominance of potassium ions</u>. Under these conditions, the ionic channels are closed.

For this reason, a neuron at rest, before receiving a stimulus, presents positive charges on the outside and negative charges on the inside, and the membrane potential in this condition is estimated at a value of -65 mV.

Once a stimulus is produced, the ionic channels open and Na+ ions enter the cytoplasm, exchanging them for K+, which implies a change in the membrane potential which, on reaching the threshold, produces an action potential and the nerve impulse is produced.

3 0
3 years ago
Which fiber is made up of protein<br>​
Murljashka [212]

Answer:

Natural protein fibers.

Explanation:

Fibers such as wool, hair,and silk, are made of protein. These are all natural fibers.

<em>Hope this is correct. Wishing you the best.</em>

3 0
3 years ago
Read 2 more answers
Which is a common characteristic of extrusive igneous rock?
Thepotemich [5.8K]

Answer:

Extrusive igneous rock is formed by the crystallization of magma release after volcanic eruption at the Earth surface. They are characterized by fine grained textures because of rapid cooling they do not form large crystals. Extrusive rocks  with fine grained textures are called aphanitic rocks. The most common extrusive igneous rock is basalt. Other examples include rhyolite, andesite and obsidian. Extrusive igneous rocks erupt quickly and they form small crystals. Some of these rocks cools slowly that they form glass. These rocks includes andesite, basalt, dacite, obsidian, pumice, rhyolite, scoria and tuff.  

The common characteristic of extrusive igneous rock is the b. forms crystals

Rapid cooling of magma produces small crystal rocks.

6 0
3 years ago
Read 2 more answers
Select the correct answer.
Serggg [28]
C because biomimicry is the design and production of materials, structures, and systems that are modeled on biological entities and processes. Also the root word “mimic” like “fake” can be used to understand this
4 0
3 years ago
Supose that two populations of squirrel are put in different environments for hundreds of generations. What will most likely hap
xenn [34]
C. Both will develop new sets of traits
4 0
2 years ago
Other questions:
  • Which act addresses abandoned hazardous waste sites with significant contamination?
    6·1 answer
  • A client who uses portable home oxygen states, "i still like to smoke cigarettes every now and then." what is the appropriate nu
    12·2 answers
  • Which of the following is noy one of the three major types of rocks?
    10·2 answers
  • The diagram represents one of Mendel’s laws or principles of inheritance. mc014-1.jpg Which law or principle does the diagram re
    7·2 answers
  • Which statement is an example of a scientific theory?​
    8·2 answers
  • The order of impulse conduction in the heart, from beginning to end, is __________.
    6·1 answer
  • Which of the following is normally the longest lived reservoir for carbon?
    15·1 answer
  • Nuclear power plants produce large amounts of
    14·1 answer
  • I don't understand. Can somebody help?​
    13·2 answers
  • Would an enzyme work in a different environment that is used to?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!