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harina [27]
3 years ago
8

A planarian, the flatworm seen here, has the unique ability to

Biology
2 answers:
zaharov [31]3 years ago
7 0
The answer is: d) regenerate
Genrish500 [490]3 years ago
3 0

Answer:

d

Explanation: the moon is round

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Anyone can help me ^
notka56 [123]

Answer:

Chefs

Explanation:

5 0
3 years ago
Read 2 more answers
In 1928, Sir Alexander Fleming was studying Staphylococcus bacteria growing in culture dishes. He noticed that a mold
Viktor [21]

Alexander Fleming (1881-1955) was a Scottish bacteriologist who discovered penicillin, an antibiotic identified by the substance that moved around a fungus of the species Penicillium notatum.

<h3>1: State the issue or problem that Fleming investigated.</h3>

he investigated the contamination of a fungus that produced antibiotic substances

<h3> 2 What was Fleming's hypothesis?</h3>

That the fungus produced antibiotics and inhibited the growth of bacteria

<h3>3 How was the hypothesis tested?</h3>

He made a nutritive broth, where he placed the fungus, after growth, he extracts the substances

<h3>4 Write a statement that summarizes the results of the experiment.</h3>

He discovered that antagonistic microorganisms may have biochemical devices, such as the production of antibiotic substances, in order to survive.

<h3>5 The Lear experiment for the development of what major medical breakthrough?</h3>

Yes, after this discovery millions of people did not die from bacterial infections.

With this information, we can conclude that Fleming performed several experiments concluding that the fungus Penicillium notatum had a substance capable of killing bacteria. This substance was called penicillin.

Learn more about Fleming in brainly.com/question/21473149

#SPJ1

7 0
2 years ago
In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. If a red-eyed heterozygous f
iris [78.8K]
The correct answer is Rr and rr.

F1:    Rr x rr
F2:   Rr Rr rr rr
F1 is the first generation, parents
F2 is the possible genotypes fo offspring
It means that there is 50%possibility for heterozygous (red eyed) and 50% for homozygous (sepia eyed).

3 0
3 years ago
Site-specific recombination systems _________. Multiple Choice do not depend on extensive nucleotide sequence homology depend on
professor190 [17]

Site-specific recombination systems all of the choices are correct i.e.

A. do not depend on extensive nucleotide sequence homology.

B. depend on enzymes that are often specific for sequences within the host.

C. are features of some viruses.

  • An exchange between two specified sequences (target sites), either on the same DNA molecule or on two separate DNA molecules, is known as site-specific recombination.
  • DNA sequences may be integrated, excised, or inverted as a result of the exchange.
  • A site-specific recombinase that can work by itself or with the aid of additional components or enzymes shapes the DNA target during recombination.
  • The recombinase is chemically bonded to the ends of the intermediate DNA after DNA breakage at the recombination site; when this process is reversed, the intermediate DNA is resealed to form the recombinant and the recombinase is released.
  • During this recombination process, neither replication nor repair are necessary.

learn more about Site-specific recombination here: brainly.com/question/11458760

#SPJ4

7 0
2 years ago
HELP PLEASE! VERY URGENT!
alina1380 [7]

question one is actually mass, and question 2 is D.

3 0
3 years ago
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