Natural selection is the mechanism responsible for the antibiotic resistance of E. coli.
Natural selection is a mechanism that favors the adaptation of organisms to survive in their environment, thrive and reproduce.
In the context of antibiotic resistance, antimicrobial substances exert selective pressure on microbes that encourages the evolution of resistance.
Those capable of resisting the effects of antibiotics survive and reproduce, while the vulnerable either die or have their growth inhibited.
The excessive and inappropriate use of antibiotics favors selection for antibiotic resistance in bacteria.
E. coli is characterized by having Gram negative bacilli, it represents the greatest risks of zoonotic transfer of resistance.
In general, and when a treatment is short, there is an elimination of sensitive saprophytic strains of E. Coli and an enormous predominance of resistant strains.
Bacteria also acquire antimicrobial resistance through vertical or horizontal transfer of genetic information.
Therefore, we can conclude that resistance to antibiotics in E. coli is due to the process of natural selection since it evolves to resist the action of an antimicrobial agent.
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Make a claim about how tiger sharks and seal populations are related
Tiger sharks eat seal populations, thereby both species are related by a predator/prey ecological relationship.
Predation is an ecological interaction where individuals of one population (called predators) eat individuals of another species (called prey) in order to obtain nutrients.Tiger sharks may negatively affect the seal population.An increase in the tiger sharks population decreases the seal population because tiger sharks eat seals.In conclusion, tiger sharks eat seal populations, thereby both species are related by a predator/prey ecological relationship.
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Answer:
Tiger sharks eat seal populations, thereby both species are related by a predator/prey ecological relationship.
Explanation:
One strand of a DNA molecule has the base sequence ATAGGT. The complementary base sequence on the other strand of DNA will be
O CGCUUC
O CGCTTC
O UAUCCA
ОТАТССА
Answer:
I don't understand what you saying
Explanation:
can you please explain nicely so that I can understand
Answer:
Answer: Choice D) TATCCA
==============================================================
Explanation:
In DNA, there are four basic building blocks
Adenine
Thymine
Guanine
Cytosine
We can abbreviate them to A, T, G, and C in that order.
Explanation:
have a great day
a. How would our oil refineries interact with other spheres and factors
(biotic and abiotic) if humans suddenly disappeared?
b. What sphere is an oil refinery part of?
c. Is the oil refinery a biotic or abiotic factor in our planet?
a. In order to answer the question of how oil refineries interact with other spheres and biotic/abiotic components if humans suddenly disappear, there is a need to understand what an oil refinery is and what it does.
Oil refineries are otherwise known as petroleum refineries and are plants where crude oils are separated or refined into their useful components. There are different units in a typical refinery and many of these will remain non-functional without humans.
Refineries are typically built on land (the lithosphere) but their exhausts and other components interact directly with air (the atmosphere) causing environmental pollution, climate change, ect. If humans suddenly disappear, the following scenarios would most likely happen:
The refineries will cease to work.Their pollution of the environment (abiotic components such as soil, air, etc) will cease.They will become colonized with successions of plants/animals (the biotic components) with time.b. Oil refineries are usually built on land, hence, an oil refinery is part of the lithosphere.
c. Biotic components refer to the living factors such as the living organisms in the environment while abiotic factors refer to non-living factors such as soil, topography, etc of the environment. Since the oil refinery is non-living, it can only be categorized as an abiotic factor in our planet.
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The woods in the poem would be best described as:
Answer:
trees is best described as woods or forests also
In Mendel's experiments, he discovered a difference in the F1 and F2 generations. What difference did Mendel observe?
0% of the F1 generation displayed the recessive phenotype, and 75% of the F2 generation displayed the recessive phenotype.
100% of the F1 generation displayed the recessive phenotype, and 25% of the F2 generation displayed the recessive phenotype.
0% of the F1 generation displayed the recessive phenotype, and 25% of the F2 generation displayed the recessive phenotype.
25% of the F1 generation displayed the recessive phenotype, and 100% of the F2 generation displayed the recessive phenotype.
In Mendel's experiments, the difference he discovered in the F1 and F2 generations is as follows: 0% of the F1 generation displayed the recessive phenotype, and 25% of the F2 generation displayed the recessive phenotype.
MENDEL EXPERIMENT:
Gregor Mendel is regarded as the father of genetics due to his immense contributions to inheritance. Gregor Mendel worked with pea plants where he studied several traits in the plant. Mendel crossed two parents that are true breeding for a particular trait. The first filial generation (F1) were all dominant i.e. 0% recessive while the second filial generation (F2) were 3 dominant and 1 recessive i.e. 25% recessive. Therefore, in Mendel's experiments, the difference he discovered in the F1 and F2 generations is as follows: 0% of the F1 generation displayed the recessive phenotype, and 25% of the F2 generation displayed the recessive phenotype.Learn more at: https://brainly.com/question/290081?referrer=searchResults
15. The last stage of food processing is
A. Digestion
B. Chewing
C. Elimination
D. None of the above
Answer:
A
hello
Explanation:
Digestion
gesture
Mitochondrial inheritance tends to not follow traditional heredity patterns described by Mendelian laws. A mother has a
mitochondrial condition where she produces a modified version of ATP synthase that is embedded in the inner mitochondrial
membrane. Which outcome is predicted for a mother who has four children with an unaffected father?
The outcome is predicted for a mother with a mitochondrial condition where she produces a modified version of ATP synthase that is embedded in the inner mitochondrial membrane who has four children with an unaffected father - all four offspring will have this mitochondrial condition
Mitochondrial inheritance is a type of inheritance that is caused by mitochondrial DNA.
Mitochondrial DNA is the small circular chromosome found inside mitochondria.The mitochondrial DNA, are passed exclusively from mother to offspringsa mitochondrial disease was inherited, there is a 100% chance that each child in the family will inherit a mitochondrial disease.Thus, all four offspring will have this mitochondrial condition
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Arrange the rock layers from oldest to youngest . Re-examine The rock outcrops if you need to. Record the order in the student guide.
CONGLOMERATE,
LIMESTONE WITH CRINOID,
SANDSTONE WITH TRILOBITE,
SHALE WITH AMMONITE.
Answer:
Youngest to Oldest
Conglomerate
Shale with ammonite
Limestone with crinoid
Sandstone with trilobite
star system is made of two stars.
Compare and constraint negative and positive feedback mechanism and explain how they relate to homeostasis
Explanation:
Positive feedback occurs to increase the change or output: the result of a reaction is amplified to make it occur more quickly. Negative feedback occurs to reduce the change or output: the result of a reaction is reduced to bring the system back to a stable state.
Which feature of DNA regulates the types of enzyme produced in a cell
Biomolecules are essential to all living things.
Which biomolecule is "B" from
above table?
Unknown "B" is a lipid. Lipids contain the elements C, H, and O, but there are also phospholipids that contain P.
2. molecule made of sugars
The _____________ is the border between the interior and exterior of a cell.
Answer:
Cell Membrane
Explanation:
The cell membrane is the border that lies between the interior of the cell and the exterior.
please help
Where does sound waves passes through
How are molecules like glucose used by the body?
What are some of the different niches that were respresented in your observation
you didnt really give us much to help you with lol
There are three types of cells true or false
state three ways of improving upon the quality of indigenous soap
The three ways of improving upon the quality of indigenous soap are :-
● Add virgin coconut oil which serves as a softener and betel leaf extract. ...
● Add activated charcoal black granules or powder to the soap, it removes maximum dirt from the skin.
● Adding a filler which will increase the shelf life of usage of the soap will also improve its quality
What are the two biggest energy issues currently faced by humans? rapid fuel use lack of energy resources pollution resulting from fuel use lack of energy conservation
lack of energy conservation I'm pretty sure
only animals respond to their environment true or false
[tex]\textbf\red{False}[/tex]
[tex] \\ \\ [/tex]
[tex]\small\text\green{\underline{All living things responds to their environment.}}[/tex]
Your teacher gives you an unknown bacterium to observe. Select the method that would help you determine whether the bacterium is a chemotroph.
exposing the bacterium to carbon dioxide to see if it fixes carbon
growing the bacterium in a sulfur solution to see if it breaks the inorganic molecules down
exposing the bacterium to direct sunlight to see if it converts light to chemical energy
growing the bacterium in an agar tube filled with protein to see if it breaks the organic molecules down
Answer:
growing the bacterium in a sulfur solution to see if it breaks the inorganic molecules down
Explanation:
The method that would help determine if the bacterium is a chemotroph is : ( B ) growing the bacterium in a sulfur solution to see if it breaks the inorganic molecules down
Chemotrophs obtains its energy through Carbon dioxide and other inorganic molecules in its environment . Chemotrophs can be grouped as organic or inorganic and the process of obtaining energy by Chemotrophs is called Chemosynthesis. They are found mainly in places without the reach of sunlight.
Therefore to determine if a bacterium is a chemotroph grow the bacterium in a sulfur solution to see if it breaks down the inorganic molecules which is a source of energy for Chemotrophs.
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Section 39.2 discussed the mechanism by which threonyl-tRNA synthetase attaches threonine to the proper tRNA while preventing the attachment of the similar amino acids valine and serine. Using this as a model, explain how an isoleucyl-tRNA synthetase might prevent the incorrect addition of the similar amino acids leucine and valine to its target tRNA.
Valine could fit in the activation site.
[ Choose ] FALSE TRUE
Isoleucine could fit in the activation site.
[ Choose ] FALSE TRUE
Leucine could fit in the activation site.
[ Choose ] FALSE TRUE
Valine could fit in the editing site.
[ Choose ] FALSE TRUE
Isoleucine could fit in the editing site.
[ Choose ] FALSE TRUE
Leucine could fit in the editing site.
Answer: Just so know im not fully sure with this answer
false
true
false
false
true
Explanation:
The prevention of incorrect addition of the similar amino acids leucine and valine to its target tRNA are:
A. Valine- false.
B. Isoleucine - true.
C. Leucine - false.
D. Valine - true.
E. Isoleucine - false.
F. Leucine - true.
What are amino acids?Amino acid are the basic unit to make proteins. There are total 20 amino acids are present. They are made up of amino and carboxylate functional group.
Thus, the correct option is A. Valine- false.
B. Isoleucine - true.
C. Leucine - false.
D. Valine - true.
E. Isoleucine - false.
F. Leucine - true.
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Life is based on cells. What do you think of this statement?
Answer:
what's the statements? can you please post it
When our body gets too hot, we begin to sweat. When sweat evaporates, thermal energy is transferred to the air outside our body and our body temperature drops. What characteristic of life does this represent?
Answer:
i dont know if this is multiple choice or anything but the answer to this question is Homeostasis.
Explanation:
What is the best design for a hearing aid if a patient has hearing loss in a particular aound range?
Answer:
Hearing aids are devices, which are used to treat diseases or disorders associated with the ear and hearing. Hearing aids are small devices placed in the ear, which functions to amplify the sound.
Explanation:
Hearing aids are made up of three parts, which are microphone, amplifier, and speaker. The microphone collects sounds from the surroundings and converts the sound into a digital signal. The amplifier amplifies the digital signal, which is then produced in the ear by the speaker. Hearing aids are designed in such a way that it is least visible in-ear, should be small and should be of decent costing. The small hearing aids might have less power to amplify the hearing. There are several types of designs for hearing aids, which are open fit, behind the ear, receiver in canal, and the ear. Behind the ear type of hearing aids are considered one of the bests as they can be fitted into people of all ages and can cure almost every type of hearing loss. The behind-the-ear aids have a directional microphone, more amplification, and can pick up more noise than other styles. The device also comes with a rechargeable battery.
Match the organisms on the right with what they eat on the left. Question 2 options: This organism feeds on algae. This organism feeds on young fish, shrimp, crab, and worms 4 This organism feeds on snappers, angelfish and parrot fish. This organism feeds on sponges.
1. Stoplight parrotfish
2. Queen Angelfish
3. Yellowtail Snapper
4. Nassau Grouper
The animal in option one feeds on algae. Option two feeds on algae and sponges. The third fish tends to eat smaller fish and organisms and the final fish preys on other fish including the ones listed.
The Stoplight parrotfish live in coral reefs and tropical waters. They are small grazer fish. This means that their diets are primarily herbivorous in nature, they feed on algae by using their teeth to reach it.
The Queen Angelfish are foragers. These fish will consume prey such as
Corals AlgaeSponges (primarily)the Queen Angelfish is known to also consume parasites and scales from other fish.
The Yellowtail Snapper is a larger fish than the ones previously mentioned. This fish eats smaller prey like shrimp, crab, worms, and other fish. Some are known to consume plankton as well.
Finally, the Nassau Grouper is a large predatory fish. They are known to use ambush tactics to feed and will eat any fish that will fit into their mouths. This includes snappers, angelfish, and parrotfish.
The Stoplight parrotfish feed on algae, while Queen Angelfish feed on corals, algae, and sponges. The Yellowtail Snapper tends to eat smaller fish and organisms and the Nassau Grouper preys on other fish including the ones listed before.
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how does waters mocular structure affect solubility of substances on earth
Answer:
Waters mocular structure affect solubility of substances on earth mostly in a indirect manner.
Explanation:
Two substances whose molecules have substantially related structures and consequently comparable intermolecular forces would normally be soluble in each other.The higher the variation in molecular structure (in intermolecular attractions), the lower the mutual solubility.Learn more about solubility, refer:
https://brainly.com/question/17647006https://brainly.com/question/15771389What is the cell theory?
Answer:
I guess it would help you
Describe the digestion of fats.
You should include reference to the following in your answer.
- Named regions of the alimentary canal and associated organs.
- Named chemicals, including the end producys of fat digestion.
Answer:
The majority of fat digestion happens once it reaches the small intestine. This is also where the majority of nutrients are absorbed. Your pancreas produces enzymes that break down fats, carbohydrates, and proteins. Your liver produces bile that helps you digest fats and certain vitamins.
Answer:
Triglycerides are large molecules, and unlike carbohydrates and proteins, they're not water-soluble. The digestive process has to break those large droplets of fat into smaller droplets and then enzymatically digest lipid molecules using enzymes called lipases. Digestion of fats mainly take place from fat enzymes produced in liver.
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