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
svetoff [14.1K]
3 years ago
12

Suppose that when you examined your tubes (in this exercise) after incubating them, you noticed that the unsealed control contai

ned slight yellowing at the top. suppose further that pair #1 showed complete yellowing of both tubes and pairs #2 and #3 showed slight yellowing of the unsealed tube.
Biology
1 answer:
aivan3 [116]3 years ago
6 0
The Oxidation-Fermentation Test is used to differentiate bacteria built on their capability to oxidize or ferment specific sugars.
Once microbes are inoculated,-One tube is sealed with a layer of sterile mineral oil to promote anaerobic growth and fermentation.-The other tube is left unsealed to allow aerobic growth and oxidation.
Organisms able to ferment the carbohydrate or ferment and oxidize the carbohydrate will turn the sealed and unsealed yellow throughout.
Organisms able only to oxidize the sugar will turn the unsealed yellow medium and leave the sealed medium green or blue.
Fragile fermenters will convert both tubes slightly yellow at the top.
Organisms not able to metabolize the sugar will either produce no color change or will turn the medium blue due to alkaline products from amino acids degradation.
Since Pair #1 showed complete yellowing for sealed and unsealed, these Organisms able to ferment the carbohydrate or ferment and oxidize the carbohydrate. So our interpretation will be that the organism has: Oxidation and fermentation OR fermentation only.
For tubes #2 and #3, the sealed tubes were green throughout suggests that they need oxygen for aerobic growth, and the fact that their unsealed tubes showed light yellowing is evidence for oxidation. Sealed - Green and Unseal - Yellow. Our interpretation for these pairs of tubes would be : Oxidation
Tube 1 can be either Oxidation and fermentation OR fermentation only. So reliability of this needs to be confirmed more with additional testing.
Tubes 2 and 3 are most reliable because they can only be oxidation only and no fermentation.
You might be interested in
What part of an environment are a swarm of bees?
Bond [772]
A swarm of bees would be in an ecosystem
3 0
4 years ago
In green leaves, light-absorbing compounds called pigments are made of A) adenine. B) carbohydrates. C) lipids. D) proteins.
loris [4]
I now chlorophyll is the main compound (or one of them) and I'm pretty sure chlorophyll is a protein so I'd pick "D".
3 0
3 years ago
Read 2 more answers
The conditions on earth around the time of the origin of life were very different from those of today. most of the molecules pre
son4ous [18]
The law of entropy, presence of water, physical conditions of earth movement like volcanoes and atmospheric effects, and the stochastic, random interaction of elements on the Earth determined the degree of molecular assembly possible. The simple abiotic chemicals found in the water, on the land or distributed in the air, and deposited from meteors and comets show that at most some elemental biochemicals, including amino acids, simple sugars, lipids and polymers could form.

There are no naturalistic conditions or processes that could produce all the biochemical compounds and molecules required to assemble even the simplest living organism. Even in the lab, highly intelligent design and management of experiment processes and materials is required to produce interesting, but relatively minor, complex assemblies, but nothing  comprehensive.
3 0
3 years ago
Identify two ways in which you
Mars2501 [29]
Idk what this means sorry
6 0
3 years ago
Read 2 more answers
What kind of information from our world called senseory neurons detect
umka21 [38]
Vision hearing tasting
7 0
3 years ago
Other questions:
  • The brain waves most closely associated with mental activity are
    14·1 answer
  • What is the function of a cilia on a sponge larva?
    10·2 answers
  • Which of the following is true about gene duplications?
    12·1 answer
  • The ecosystem of a lake includes
    6·1 answer
  • What is the climate in saudi arabia, iraq, and iran?
    10·1 answer
  • Which molecules are products of photosynthesis
    12·2 answers
  • A remora is a type of fish with a unique suction cup on the underside of its body. It can often be found swimming next to or att
    8·1 answer
  • What are two types of human waste?
    6·1 answer
  • Plsssss answer this question
    5·1 answer
  • Energy carried by waves
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!