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KATRIN_1 [288]
2 years ago
5

A culture of E. coli is grown on minimal medium plates supplemented with either tryptophan, histidine, or lysine. The resulting

colonies are replica plated to three minimal medium plates containing no supplements. The next day, colonies grow on the minimal medium replica plated from the histidine and lysine plates, but colonies do not grow on the tryptophan replica plate. This indicates that the E. coli strain is a________.
Biology
1 answer:
AlladinOne [14]2 years ago
5 0

Answer:

tryptophan auxotroph

Explanation:

Tryptophan is known to be a crystaline essential amino acid that is widely distributed or mostly found in proteins.

An auxotroph is an organism that is not able to synthesize a compound needed  for its growth.

In this case, E. coli is described as a tryptophan auxotroph because it was unable to synthesize or make use of the tryptophan vy growing in the plate containing it.

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Ne4ueva [31]

Answer:

Answer:

The correct answer would be "contains coded information for the creation of proteins".

DNA or deoxyribonucleic acid is a polymer of nucleotides.

It is the genetic material in most of the living cells present on earth. That is, it controls all the characters and traits of the living organisms.

In prokaryotes, it keeps floating in the cytoplasm whereas it is confined in the well-defined nucleus in eukaryotic cells.

The nucleotide sequence of the DNA is used as the code for the synthesis of the proteins.

It is first transcribed into the nucleotide sequence of mRNA which is further decoded into the amino acid sequence of the proteins.

8 0
2 years ago
Read 2 more answers
5
xeze [42]

Answer:

I would say B is the answer.

Explanation:

An applied force is a force that is applied to an object by a person or another object. Example: pushing a box to the other side of a room.

A normal force is a force that surfaces exert to prevent solid objects from passing through each other. Example: resting a book upon a table.

Drag is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid. This doesn't really match the force we use.

However, an attractive force is a force by which one object attracts another. Example: two magnets pulling/colliding together. This is a good example of a force we exert on objects when it is pulled toward us.

4 0
2 years ago
HELP! QUICK!
Readme [11.4K]

Answer:

b

Explanation:

7 0
3 years ago
Complete the sentence:
fomenos
Re: A car driver automatically brakes if a child dashes across the road.
<span>This is called a .............................................. reaction.
answer: reflex</span>
6 0
3 years ago
The collect data step of the scientific method comes before the hypothesis step. True or False?
matrenka [14]

Answer:

true after data collection you state your hypothesis

4 0
2 years ago
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