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Elza [17]
3 years ago
15

Which of the following statements describes a proton of an atom?

Biology
2 answers:
ad-work [718]3 years ago
8 0
D has a positive charge and located in nucleus
Nuetrik [128]3 years ago
8 0

Answer: D : Has a positive charge and is located in the nucleus.

Explanation: Proton has a positive charge and is located in the nucleus of atom. Rutherford discovered protons. Protons and neutrons are present in nucleus of every atom.

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The information in the table shows the possible genotypes resulting from the mating of two heterozygotes aadd. the allele a code
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Admitting that the "a" is a capital A for normal pigmentation and "d" is a capital D for dimpled chin, meaning that these are the dominant traits, the fraction expected to be albino with a non-dimpled chin is of 1/16.
When two heterozygous are crossed and two characteristics are being analysed, the offspring quantity that will possess the two recessive traits can be represented by 1/16. This is easily confirmed when a Punnett square is made. Considering that both parents were heterozygous, on both sides of the crossing in the Punnett square, you would have the following alleles' combination: AD, Ad, aD, and ad. The offspring that would be homozygous recessive (aadd) would correspond to only 1/16. 
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3 years ago
True or false? all the characteristics of life are interrelated
Ede4ka [16]

The awnser is true!! I hope this helped!

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elena-s [515]
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3 0
4 years ago
The cell theory eventually replaced the concept of spontaneous generation as a result of what experimental evidence?
Arisa [49]

<u>Answer:-</u> <em>Option C </em>- evidence that microorganisms cannot grow in boiled broth when new organisms were not allowed to enter.

<u>Explanation:-</u>

  • <em>Theory of spontaneous generation</em> stated that the living organisms can be created from non living matter. However, this theory was disapproved and replaced by the <em>cell theory</em> which stated that all living organisms are created from cells and new cells arise from pre-existing cells.
  • There were several experiments conducted by various scientists to disapprove the theory of spontaneous generation however, the experiment that was most successful to do so was the one conducted by <em>Louis Pasteur</em> in 1859.
  • <em><u>Description of the experiment:-</u></em>

-In his experiment, Pasteur boiled a meat broth in a flask (it was known that boiling the broth kills the micro organisms) and then heated the neck of the flask to bend into a S- shape.

The purpose of the S shaped neck was to allow the air to enter into the flask but not the micro-organisms as the micro organisms will settle by gravity in the neck and not reach into the flask.

<em>observations of the experiment</em> :-

1. Pasteur observed that even though the air entered the flask no micro organisms were growing in the flask.

2. Further,when he tilted the flask so that the broth came in contact with the part of the neck where the air borne microorganisms could have settled he was able to observe microbial growth in the flask.

These observations laid the theory of spontaneous generation to rest and proved that <em>organisms can only grow in the presence of pre-existing cells </em>which in this case were the microorganisms.  

4 0
3 years ago
Can anyone help me write hydroelectric essay
Assoli18 [71]

Answer:

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Explanation:

Explanation:

this is just what is in my mind

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