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
Free_Kalibri [48]
3 years ago
9

A student inoculates a gelatin tube and places it at 37C for the week. When he comes back he takes the tube out of the incubator

and notices that the media is liquid. He concludes that the bacterium is gelatinase positive. Is this the right conclusion? Explain.
Biology
1 answer:
ycow [4]3 years ago
3 0
<h2>Gelatin </h2>

Explanation:

Gelatin is a differential medium which tests the ability of an organism to produce an exoenzyme, called gelatinase (this enzyme hydrolyzes gelatin)

When gelatin is at a temperature below 32°C (or within a few degrees thereof), it is a semisolid material and at temperatures above 32°C, it is a viscous liquid

When gelatin is broken down, it can no longer solidify and if an organism can break down gelatin, the areas where the organism has grown will remain liquid even if the gelatin is refrigerated

No the conclusion by student is not right because the tube must be runny after incubation followed by refrigeration to be considered gelatinase positive

You might be interested in
What can scientists accomplish by applying recombinant-DNA technology?
Bogdan [553]

Answer:

- production of vaccine for disease prevention

- production of genetically modified crops

Explanation:

Recombinant DNA is a special type of DNA that has been infused with a foreign gene of particular interest.

With recombinant DNA technology, scientists can study different proteins and see how they can be used for therapy in the area of medicine. <em>The technology has been used to produce several vaccine in the prevention of diseases.</em>

In addition, recombinant DNA technology has been useful in agriculture to produce <em>genetically modified crops with desired traits such as resistance to pests/diseases and high yields.</em>

3 0
3 years ago
Read 2 more answers
Solar energy from the sun‘s rays is absorbency by the earths land and water services. The absorbed energy is then radiated back
olasank [31]
The process is known as the greenhouse gasses effect
8 0
3 years ago
Which feature is formed on the ocean floor when tectonic plates are pushed together so that one plate moves under the other?
Phantasy [73]

Answer:

B.ocean trench

Explanation: When tectonic plates slide against each other one overlaps the other.

5 0
3 years ago
Which behavior is an instinct?
suter [353]

Answer:

D

Explanation:

A robin building a nest is not learned or taught like the others. It is just instinctive for robins to build nests.

8 0
3 years ago
Read 2 more answers
When cells perform photosynthesis, they transform energy from one form to another, what takes place during photosynthesis?
Oxana [17]

During photosynthesis, solar/light energy from the sun is transformed into C6H12O6, or glucose (chemical energy). Photosynthesis is defined as the process by which green plants and some other organisms use sunlight to synthesize foods (glucose) from carbon dioxide (CO2) and water (H20). Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen (O2) and glucose.

4 0
4 years ago
Other questions:
  • In exocytosis, the membrane package fuses with _____.
    6·1 answer
  • Which one of the following steps would be included in the primary response in humoral immunity?
    15·1 answer
  • What two body systems interact if the bones produce blood cells??
    15·1 answer
  • Which of the following strands is the complementary strand to AGG – CTA – AAC?
    11·2 answers
  • In which scientific study would an ecologist take part?
    7·1 answer
  • It is sometimes observed that offspring do not resemble their parents for a particular character, even though the character vari
    9·1 answer
  • (HELP ASAP I'LL GIVE YOU BRAINLIEST)
    6·1 answer
  • Which characteristic of a skeleton you can identify by looking at the
    6·2 answers
  • The TARGET strategy is used to (2 points)
    11·1 answer
  • Ready-to-eat tcs food must be date marked if it will be stored for longer than:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!