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mezya [45]
3 years ago
6

Suppose you were interested in the effect of breastfeeding versus formula feeding on the composition of gut flora in newborns. A

s part of your experiment, stool samples from healthy babies in the study get plated on various agar media. You notice that greater numbers of colonies are recovered when samples are plated on blood agar compared to Luria Bertani (LB) agar. After some diligent subculturing, you isolate several bacterial species capable of slow growth on the blood but not on the LB agar. You correctly surmise that these organisms
Choose one:
A. are opportunistic blood pathogens.
B. should be classified as beta-hemolytic.
C. have extensive and complex nutritional requirements not met by LB agar.
D. grow because the blood agar suppresses the growth of faster-growing bacteria.
E. are Gram-positive and, thus, inhibited by the ingredients in LB agar.
Biology
1 answer:
xxMikexx [17]3 years ago
8 0

Answer:

Option (C).

Explanation:

Luria Bertani is a rich nutritional medium generally used for the growth of bacteria. This media was created by Giuseppe Bertani.

Bacteria shows slow growth on blood but can grow grow easily in LB agar because they have complex and extensive requirement that cannot be met by LB agar. Blood agar is more enriched media and can grow the bacteria that are dependent upon the host organism.

Thus, the correct answer is option (C).

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Which sphere is the atmosphere interacting with when winds are produced over oceans?.
Marina CMI [18]

Answer:

The hydrosphere

Explanation:

The atmosphere interacts with the hydrosphere to redistribute water over the surface of Earth.

6 0
1 year ago
Why would it be hard to find the CO2 level if the light intensity were very low? HELP!!!!
drek231 [11]
If CO2 was in very small amounts then it would be the limiting factor of photosynthesis, this means the process will take place at a much slower rate because it is lacking one of the raw materials it needs for the process to occur. To find the optimum light intensity you really need all other factors to be at optimum levels or in abundance.
4 0
3 years ago
Question 5
ArbitrLikvidat [17]

The environmental effects of an individual or group in terms of resources used and waste produced is an individual or group's ecological footprint (option A).

<h3>What is ecological footprint?</h3>

Ecological footprint is the measure of how much biologically productive land and water area an individual, population or activity requires to produce all the resources it consumes and to absorb the waste it generates using prevailing technology and resource management practices.

Living organisms make use of resources in the environment and these can either leave negative or positive effect on the environment that will affect sustainability.

Therefore, it can be said that the environmental effects of an individual or group in terms of resources used and waste produced is an individual or group's ecological footprint.

Learn more about ecological footprint at:brainly.com/question/14441911

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8 0
1 year ago
Do the information given and the map best describe adaptive evolution, convergent evolution, or coevolution? Explain your respon
miss Akunina [59]

Hi, the given question is incomplete, it is missing a diagram, the diagram is given in the attachment below,

Answer:

The correct answer is adaptive evolution.

Explanation:

Based on the given information, it is clear that it best illustrates the phenomenon of adaptive evolution. It is known that different species of finches exhibit an ancestor, which is common, however, all the species have shown adaptation based on the kind of food they are getting within their surroundings.  

The evolutionary modifications that arise by getting adaptive to the specific environment are termed as adaptive evolution. These changes arise due to the phenomenon of natural selection, which further enhances the tendency of reproducing or survivorship after going through some of the challenges presented by the surroundings.  

3 0
2 years ago
Charles Darwin observed a unique beak size and shape in the finch population of each of the Galapagos Islands that he visited. W
prohojiy [21]
The most likely cause of the beak variation is the food source of the finch, the break size and shape was adapted to most likely have easier and better access to food.  <span />
5 0
3 years ago
Read 2 more answers
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