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IrinaK [193]
3 years ago
14

What is a way a cell is put together called?

Biology
1 answer:
Alexus [3.1K]3 years ago
4 0
<span>In table or Excel, it's merging or combining. 
In biology, cells generally don't combine, they split (mother cells splits into two daughter cells)</span>
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What best defines potential energy
iren [92.7K]

Answer:

See the explanation below, please.

Explanation:

Potential energy is defined as the ability of a body to perform a job.

An example of potential energy could be the elastic type, by means of traction and compression processes of said materials, called elastics. Another example would be when we throw a ball from a 1st floor downwards (said body, the ball, gains height), turning the potential energy into kinematics.

3 0
3 years ago
Organisms that rely on other living things for food are called
Katarina [22]
Carnivores (animals that eat other animals/humans for food)
5 0
3 years ago
Read 2 more answers
Which characteristics distinguish a law from a theory? Check all that apply.
klemol [59]
We cant check anything dude.
4 0
3 years ago
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A DNA fragment is introduced into the lacZ gene of a plasmid, which also contains an ampicillin resistance gene. What is the app
zhenek [66]

Answer: The bacteria transformed with this particular plasmid will form white colonies on the plates containing ampicillin and Xgal.

Explanation: The lacZ gene produces an enzyme called β-galactosidase which is responsible for the breakdown of lactose into glucose and galactose. The lacZ gene is one of the three genes (the other two being lacA and lacY) of the lac operon which is responsible for the transport and mechanism of lactose in E. coli and many other bacteria.

In recombinant DNA technology, when a plasmid is to be used to transform a host cell, such markers are used to help screen the transformed cells from the ones that have not taken up the plasmid. Xgal present in the plates is an artificial substrate which is hydrolyzed by

β-galactosidase into 5-bromo-4-chloro-indoxyl which will dimerize and oxidise into 5,5'-dibromo-4,4'dichloro-indigo. This is a blue pigment which will give blue color to the bacterial cells. Introducing a DNA fragment in this lacZ gene will make it non-functional so it will not be able to produce the enzyme.

Therefore, when a bacterial cell is transformed with a plasmid containing ampicillin resistance gene and a DNA fragment introduced in the lacZ gene and then grown on plates containing ampicillin and Xgal, white colored colonies will appear. The white colonies will show the bacterial cells that have successfully taken up the plasmid with the DNA fragment incorporated in the lacZ gene as this will render the gene non-functional and will not produce β-galactosidase which will breakdown Xgal to give blue colonies. Since the plates contain ampicillin, only the bacterial cells that have been successfully transformed with the plasmid ( the ones that have the DNA fragment and the ones without it) will grow as the ampicillin resistance will give them resistance against ampicillin in the plates. The bacterial cells that have not taken up the plasmid will not be resistant to ampicillin and will not form colonies on the plate.

This is called blue-white screening which is used to identify successfully transformed host cells. A picture of this is given in the attachment, taken from the following website:

https://www.mun.ca/biology/scarr/Blue_&_White_Colonies.html

8 0
3 years ago
Which of the following statements might someone use to most support a decision to buy organic produce?
IrinaVladis [17]

The use of chemicals on crops poses known health risks to humans. this statement most support a decision to buy organic produce.

  • The agriculture industry has become more industrialized, which has increased the chemical load on the environment.
  • Agrochemicals known as pesticides are applied to agricultural fields, public health initiatives, and urban green spaces to protect people and plants from numerous diseases.
  • Their side effects, however, can be a significant environmental health risk factor due to their proven capacity to have a wide range of detrimental health and environmental impacts.
  • Produce that is organic uses fewer pesticides.
  • Because organic food lacks preservatives that extend its shelf life, it is frequently fresher.
  • Organic farming typically benefits the environment.
  • Animals kept organically are not fed animal byproducts, growth hormones, or antibiotics.

learn more about  organic produce here: brainly.com/question/14318031

#SPJ1

5 0
1 year ago
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