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xxMikexx [17]
4 years ago
12

Identify the positive and negative controls used in this experiment. explain how each of these controls are used, and why they a

re necessary to validate the experimental results
Biology
1 answer:
Gekata [30.6K]4 years ago
3 0
A positive control is when you test your experiment against something where you know what the effects will be, whereas a negative control would be when you test the experiment with something you know will have no effect.
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A period of mass extinction is often followed by ________.
ololo11 [35]
The answer is diversification. The populace segment of an animal varieties' specialty relates to the conveyance of people crosswise over situations inside an area. As developmental clades of species expand, they apparently fill specialty space, and, thus, the rate of increment in species numbers moderates.
6 0
3 years ago
When conducting an experiment on how stimuli are represented by the firing of neurons, you notice that neurons respond different
igor_vitrenko [27]

Answer: Divergence

Explanation:

One postsynaptic cell has the ability to receive the input from large number of different presynpatic cells and the divergent neurons can have connections with different postsynaptic cells.

The divergence in the neurons allows one neurons to have communication with the other neurons within a network.

The divergence neurons can communicate with any of the neurons (output) in the network.

5 0
3 years ago
You are carefully examining a living organism. Which of the following should convince you that the organism is acoelomate?
matrenka [14]

Muscular activity of its digestive system distorts the body wall should convince you that the organism is acoelomate.

<h3><u>Explanation:</u></h3>

An animal that does not have body cavity refers to an acoelomate. It is in contrast with the eucoelomates which are the animals that have body cavity. The acoelomate will not have a cavity which is filled with fluid between the digestive tract and the body. Hence there will be a distortion of body wall by the muscular activity of the digestive system.  

Some of the examples of acoelomate  are Cnidaria,Porifera , Platyhelminthes, Placozoa ,Gnathostomulida.Nemertina and Mesozoa. The presence of pseudocoelom in which the body cavity will not be lined by the mesodermal cells are the Pseudocoelomate.

5 0
3 years ago
Which is the best definition of a conclusion? A- a written description of events that occurred during an experiment B- an act of
Fantom [35]
Hey there,

D- an experiment that uses data to support or reject a hypothesis.
So basically its something that sums up everything that you did in the past.

~Jurgen
3 0
3 years ago
Read 2 more answers
Why is the human body considered an “ideal environment” for bacteria?
xxMikexx [17]

bacteria can live in hotter and colder temperatures than humans but they do best in a warm moist protein-rich environment that is pH neutral or slightly acidic

3 0
3 years ago
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