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Sveta_85 [38]
2 years ago
5

What did Madame CJ Walker create that helped her achieve success?

Biology
2 answers:
Katyanochek1 [597]2 years ago
8 0
The answer is hair treatment
7nadin3 [17]2 years ago
3 0
The answer is B. Hair treatment
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Who first identified nucleic acids, and where were they discovered? Friedrich Meischer discovered nucleic acids in blood cells.
AnnyKZ [126]

Answer:

Friedrich Miescher discovered nucleic acids in blood cells.

Nuclein was discovered by Friedrich Miescher in 1869

Explanation

In the somewhat early 1880s Albert Kossel further purified the substance and discovered its highly acidic properties. Then he later discovered the nucleobases. In 1889 Richard Altman creates the term nucleic acid. Friedrich Miescher was the first scientist to ever isolate nucleic acid.

7 0
3 years ago
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tructures used in recombinant DNA technology to carry the DNA from the cells of one species to the cells of another species are
Kobotan [32]

The process of fusing two or more DNA molecules to produce a hybrid is known as recombinant DNA. Restrictions endonucleases and ligases are two classes of enzymes that enable the technique.

When a restriction endonuclease detects a particular DNA sequence, it makes cuts inside or near that sequence. The recognition sequence of a restriction enzyme will haphazardly appear on every (1–4)n bases along a random DNA chain. The equation states how many fragments ends (measured in moles) are produced when a restriction enzyme cuts DNA.

Moles of DNA ends =2x(grams of DNA)/(number of bp)(660 g/mol / bp).

The equation describes how many ends are produced when circular DNA is digested by a restriction enzyme.

Mole ends=2x(moles DNA)x number of restriction sites.

The following equation can be used to determine how many ends are produced during the digestion of a linear molecule by a restriction endonuclease.

Mole ends=2x(molesDNA)number of restriction sites +[2x(moles of DNA)].

learn more about DNA brainly.com/question/2131506

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3 0
1 year ago
Which food is at a temperature that allows bacteria to grow well ? A) a roast at 125•F (52•c) B) hamburgers at 165•f (74•c) C) p
Lilit [14]

The correct answer is A) A roast at 125°F (52°C)

Explanation:

In general terms, bacteria thrive at warm temperatures; this means bacterial growth is lower at extremely hot/cold temperatures, but it is higher at warm or medium temperatures. Indeed, the ideal temperature for bacteria to develop and reproduce is between 4° C and 60°C. This implies from the options given the roast at 52°C represents an ideal temperature for the growth of bacteria. Also, other options include temperatures above 60°C, and therefore do not allow bacteria to grow well.

4 0
3 years ago
In fruit flies (drosophila melanogaster) there is a dominant allele for red eyes and a recessive allele for white eyes. these al
nataly862011 [7]
The answer is 25 percent of females are expected to be white-eyed
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3 years ago
In your own words, what is the definition for Osmotic pressure?
ANTONII [103]

I love this topic

Answer:

Osmotic pressure is defined as the pressure that must be applied to the solution side to stop fluid movement when a semipermeable membrane separates a solution from pure water.

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2 years ago
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