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Citrus2011 [14]
3 years ago
14

Before scientists can manipulate DNA they must first do a DNA extraction what is done during this process?

Biology
1 answer:
Natasha_Volkova [10]3 years ago
8 0

break the cells open to collect the dna.
seperate the dna from proteins and cellular debris.
precipitate the dna with an alcohol.
clean the dna.
look at the concentration and quality of the dna. 
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Why can the enzyme maltase, which breaks down into the sugar maltose, not also be used to break down the sugar sucrose?
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The enzyme maltase breaks down disaccharide maltose into simple sugar glucose, which is usable by the body. This glucose can now also be stored in the liver for future use.

This maltase does nor break down sugar sucrose because it is the sucrase enzyme that breaks down sucrose into glucose and fructose.

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This question seems to be incomplete because the experiment is not described but it is possible to answer it.

The correct answer is B. Redi disproved spontaneous generation.

Explanation:

Francesco Redi was an important scientist during the 17th century known for his experiments about maggots in rotten meat. This is because during Redi's time it was believed rotten meat was the origin of maggots because maggots seemed to emerge from this. Additionally, this perception was related to the spontaneous generation or the idea life can emerge from non-living materials. The results of this experiment show the idea about spontaneous generation was not true in the case of meat and maggots because maggots were simply the result of eggs flies laid on rotten meat. This means this experiment disproved spontaneous generation.

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7 0
4 years ago
6.1.3 Final Exam: Semester 2 Exam
pashok25 [27]

The parental phenotype is the mother's free earlobes (Ff) and the father's nonfree earlobes (ff).

<h3>What genotype and phenotype?</h3>

The genotype refers to the information present in an individual's genome. Unlike the phenotype, it is not observable and rarely changes. The phenotype, in turn, depends on a combination between our genotype and the environment and can be defined as the observable characteristics of an individual.

With this information, we can conclude that the parental phenotype is the mother's free earlobes (Ff) and the father's nonfree earlobes (ff).

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