1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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.

You might be interested in
What part of the integumentary system blocks bacteria and fungi?
Keith_Richards [23]
Function of integumentary system: PROTECTION<span>- barrier against infectious, chemical, radioactive, and physical damage.
- keratin and junctions block bacteria, fungi, and blunt objects.
-macrophages identify foreign particles and activate immune response.</span>
8 0
2 years ago
Which of the following statements about DNA (deoxyribonucleic acid) is NOT true?
makkiz [27]

D. Seems the most likely.

8 0
2 years ago
Adaptations in a population occur quickly and can be observed true. false.
motikmotik
I think the answer TRUE
4 0
2 years ago
I will do Brainliest If this is quick and right. (I will figure out brainliest ive never done it before)
tino4ka555 [31]

epithelial stomach cell>stomach lining tissue>stomach>disgestive system

7 0
3 years ago
Why is frog development susceptible to minor environmental changes?<br><br> plz help
Leviafan [203]

Answer:

They go through many developmental changes. ... Studies by independent researchers show a link between pesticides and frog deformities.

Explanation:

3 0
2 years ago
Other questions:
  • How is human impact on the tundra and the rainforests similar?
    9·2 answers
  • Coral reefs are made of
    5·1 answer
  • All cells whether they are Prokaryotic or Eukaryotic have a selectively/semi permeable cell membrane that allows certain things
    12·1 answer
  • V391 Pegasi is a star that is 4,570 light years away from earth. What is the distance in kilometers?
    10·2 answers
  • What happens to the expression of the lacI gene if lactose is not available in the cell? View Available Hint(s)
    5·1 answer
  • How does an echinoderm use its tube feet
    10·1 answer
  • An ecological pyramid is sometimes used to show both the flow of matter and energy in an ecosystem. The pyramid narrows as matte
    8·1 answer
  • Calculate the number of protons and neutrons in each isotope listed . Uranium-235_______ protons,________neutrons
    5·1 answer
  • Imagine that a toxin is introduced to the body and inhibits the establishment of the proton gradient in the intermembrane space.
    9·1 answer
  • Name 3 groups of Archaebacteria
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!