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
Savatey [412]
3 years ago
6

Data samples in which you expect no change to occur are_____.

Biology
1 answer:
mina [271]3 years ago
5 0
The answer is negative controls. These are groups where no phenomenon is probable. They ensure that there is no effect when there should be no effect. Where there are only two possible outcomes, e.g. positive or negative, if the treatment group and the negative control both produce a negative result, it can be concluded that the treatment had no effect. If the negative control group and the treatment group both yield a positive result, it can be inferred that a puzzling variable is involved in the occurrence under study, and the positive results are not only due to the treatment. In other examples, outcomes might be measured as lengths, times, percentages, and so forth.
You might be interested in
nitrogen gas reacts with hydrogen gas to form ammonia. what are the reactants in this chemical reaction
Ivahew [28]

Answer: nitrogen and hydrogen

N2 +3 H2 ---> 2NH3

Explanation:

5 0
3 years ago
How might an individual's own cells lead to false verdicts of guilt.
Gre4nikov [31]

Answer:

Through a circumstance known as "secondary transfer DNA", or "Touch DNA".

Explanation:

Most times when a crime is committed, DNA samples are obtained from surfaces in the scene where the crime was committed. There is a very huge possibility of picking up the DNA of someone who was never at the scene of the crime and this is a result of a condition known as Touch DNA.

Because we touch several objects which can be moved to different locations and touch people who are also always mobile, our DNA cells can find their ways to a crime scene where we had never physically been to. This can lead to false verdicts of guilt.

5 0
2 years ago
What is mixed-acid fermentation? how is methyl red used to determine if a microbe has undergone mixed-acid fermentation?
Vika [28.1K]

Mixed Acid Fermentation is a biological process by which a six carbon sugar is converted into complex mixture of acids. It is an example of anaerobic fermentation reaction which is commonly seen in bacteria.

The fermentation produces lactate, acetate, succinate, formate, ethanol, H_{2} and CO_{2} and their formation depends upon the presence of certain key enzymes in the bacterium.

The Methyl Red test is used in detecting occurring of mixed acid fermentation pathway when glucose is provided to microbes by using ph indicator. If the fermentation pathway has taken place, the mixture of acids will make the solution very acidic and causes red color change. The Methyl Red test belongs to the group called as IMViC tests.

To learn more about  fermentation here

brainly.com/question/13050729

#SPJ4

3 0
1 year ago
What do limiting factors control
lesantik [10]
Limiting factors control the size and growth of an organism’s population.
5 0
3 years ago
Dna can be recovered from skin cells, hair follicles, and body fluids. the recovered dna can be used to make dna fingerprints. h
sladkih [1.3K]
DNA fingerprints help the police by providing the information needed to compare the DNA found at the crime scene to any documented DNA of any person through their data base to find the criminal.
7 0
3 years ago
Other questions:
  • Theophrastus was considered the "Father of Botany" in the approximate year _____.
    15·2 answers
  • Organisms having eggs and sperm are said to be:
    13·2 answers
  • Which structure do both nonvascular plants and seedless vascular plants have in common?
    12·2 answers
  • In looking at the layer of rock, bones from the Pliohippus are found in layers above bones of the Mesohippus what does this tell
    15·1 answer
  • How is energy from the Sun used food as energy by organisms in the ecosystem​
    6·1 answer
  • The most likely result of this process is
    8·1 answer
  • Which of these is a goal that a female might set for herself in order to
    9·1 answer
  • (b) Explain why an individual was found to have a high urea content in his urine after
    5·1 answer
  • Water is often called the “universal solvent” becuase many substances can be dissolved in water. What property of water allows i
    5·1 answer
  • What is the most volcanically active body in the solar system?<br><br><br><br><br> Or science
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!