Answers
According to the information provided in the graph it can be inferred that the percent of resistant S. aureus doubled from 1950 to 1960.
The graph shows the evolution of the resistance of the Streptococcus aureus bacteria to penicillin from 1940 to 2010. The percentage of resistance evolved as follows:
1940 - 0% 1950 - 40% 1960 - 80% 1970 - 83% 1980 - 88% 1990 - 90% 2000 - 97% 2010 - 100%
According to this information, it can be inferred that the correct answer is option B because the percentage of resistance of S. aureus doubled from 1950 (40%) to 1960 (80%). Additionally, the other options are not because:
A. Between 1980 and 2010, resistance growth was lower than in previous years. C. Resistance peaked in 2010 (100%). D. Loading capacity was reached in 2010.
Note: This question is incomplete because the graph, options and some information is missing. Here is the missing information:
Pneumonia is a lung infection that can be caused by a species of bacteria, Streptococcus aureus. The antibiotic penicillin has been used historically to treat bacterial pneumonia. In recent years, doctors have observed that penicillin is less effective as treatment for pneumonia.
Doctors collected data about the percent of S. aureus bacteria that were resistant to penicillin. The graph shows the percent of penicillin-resistant S. aureus from 1940 to 2010 in one hospital.
A. The percent of resistant S. aureus grew exponentially from 1980 to 2010.
B. The percent of resistant S. aureus doubled from 1950 to 1960.
C. The percent of resistant S. aureus reached its peak in 1960.
D. The S. aureus population reached its carrying capacity by 1990.
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Related Questions
based on what factor do we choose the method of separation for different components of a mixture?
Answers
Answer:
Different components of a mixture have different properties on the basis of which we device the method that is used to separate it from other components of the mixture
-TheUnknownScientist 72
How a psychologist would explain purely practical
Answers
The relationship between predator and prey species is modeled here with the owls and rodents. Which statement(s) correctly evaluate
the relationship between these species with regards to evolution? Select ALL that apply.
es )
A)
The presence of the owls is a selective pressure for the rodents.
B)
Fewer rodents result in an overpopulation of owls, leading to their
evolution
o
Coevolution is occurring as each population is evolving in response to the
other.
D)
Owls that see camouflaged rodents are more likely to evolve to have
increased variation
E)
Coloration results in poorly or well-adapted rodents while eyesight level
can lead to poor or well-adapted owls.
Answers
Answer:A, C, E .
Explanation:
I just did it on USA testprep
A) The presence of the owls is a selective pressure for the rodents.
C) Coevolution is occurring as each population is evolving in response to the other.
What is predator?A predator is an organism that hunts, kills, and feeds on another organism known as the prey. Predation is a biological interaction between two species, where one species benefits by consuming the other species, and the other species is harmed or killed.
These two statements correctly evaluate the relationship between the predator and prey species in terms of evolution. The presence of owls as predators creates a selective pressure for rodents, where those with traits that allow them to escape predation are more likely to survive and pass on their genes.
This leads to the evolution of better-adapted traits in the rodent population over time. The interaction between owls and rodents can also be considered an example of coevolution, as changes in one population can drive changes in the other population, leading to a reciprocal evolutionary response.
Overall, the relationship between predator and prey species is complex and constantly evolving, with each population influencing the other's evolution over time.
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Which set of facts is true for vaccines?
They produce active immunity.
They are mostly targeted against bacteria.
They produce active immunity.
They are mostly targeted against viruses.
о
They produce passive immunity.
They are mostly targeted against bacteria.
O
They produce passive immunity.
They are mostly targeted against viruses.
Answers
Explanation:
passive immunity, 4 viruses...
Over time, if drought conditions occur, what could happen to the number of birds with the spoon beaks in the population?
(a) increase
(b) decrease
(c) remain the same
Answers
Where does hunger originate? A., B., C., or D.
Answers
Answer:
The answer is (C) In the hypothalamus
Explanation:
Within the hypothalamus are nerve cells that, when activated, produce the sensation of hunger.
What is sexual reproduction?
Answers
Answer:
the production of new living organisms by combining genetic information from two individuals of different types
Do you have 5th grade
science for kids in Texas
Answers
Answer:
Yes, indeed they do.
Explanation:
I called my cousin in texas just to make sure this answer is correct. No problem.
What is the difference between the initial, or starting, position and the final position?
Answers
2. Summarize the properties of the three types of triglycerides by completing the table.
Answers
The properties of the three types of triglycerides by completing the table are:
They are Non-polarThey are HydrophobicThey are Insoluble in waterTriglycerides
Triglycerides are the main constituents of body fat in humans, vertebrates and vegetable fats.
triglyceride is an ester derived from glycerol and three fatty acids.
Summary of their propertiesThey are:
Non-polarHydrophobicInsoluble in waterSoluble in organic solventsTheir specific gravity is less than water.Read more about triglycerides:
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If a DNA molecule with a total of 2500 nucleotides has 1500 purines, how many guanines are in this DNA molecule?
Answers
Answer:
I'm pretty sure there would be 1000 guanines in the DNA molecule.
Explanation:
Hope this helps. . . <3
If a DNA molecule with a total of 2500 nucleotides has 1500 purines, total number of guanines are in this DNA molecule is 1000 guanines in the DNA molecule.
What will be the total number of thymines if a DNA molecule has a total of 1500nucleotides?The DNA molecules would be given and it have 450 thymines if the DNA molecule has the total of 1500 nucleotides and the DNA molecule also have been known as the deoxyribonucleic acid has been made up of the double helix. The DNA molecule with the total of 1500 nucleotides would contain 750 cytosine and Thymines and 750 guanines and adenine.
Hence, we can have the expression:
C + T = 750
If there are 300 cytosines, hence;
300 + T = 750
T = 750 - 300
T = 450
A nucleotide has the monomer constituting DNA or RNA biopolymer molecules and the double-stranded DNA molecule posseses two strands of DNA made up of the nucleotides.
Therefore, If a DNA molecule with a total of 2500 nucleotides has 1500 purines, total number of guanines are in this DNA molecule is 1000 guanines in the DNA molecule.
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Recombination (crossing over) during prophase I of meiosis occurs when:
Answers
Answer:
meiosis before tetrads are aligned along the equator in metaphase I.
Explanation:
When chromatids "cross over," homologous chromosomes trade pieces of genetic material, resulting in novel combinations of alleles, though the same genes are still present. Crossing over occurs during prophase I of meiosis before tetrads are aligned along the equator in metaphase I
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which one exactly do you need help with?
Which organelle in a plant cell is most affected when a plant has not received any water? Explain your reasoning.
Answers
Explanation:
that's why hope it helps you
Why don’t pregnant women menstruate?
Answers
Answer:
pregnant women don't menstruate bc the blood is going to the child now
Explanation:
Which list shows the three things that every good paragraph needs?
questions, answers, examples
topic sentence, supporting sentences, examples
themes, examples, transition words
topic sentence, supporting sentences, clincher plzz help me its langue arts
Answers
Answer:
topic sentence, supporting sentences, examples
Explanation:
hope it helps
GIVING BRAINLY! A 20 pound barbell is brought from earth to the International Space Station(ISS). How does this trip affect the
gravitational force between the two ends of the barbell? Assume the distance between the barbell end masses does not change.
A) The gravitational force between the ends remains the same.
B) The gravitational force between the ends increases.
The gravitational force between the ends decreases.
D) The gravitational force between them doubles.
E) The gravitational force
between them decreases by one half.
Answers
Answer:
...
Explanation:..
Answer: B
Explanation: The International Space Station ISS (assume that the weight of the ISS, if it were on the surface of the earth, is approximately 990,000 pounds) orbits the earth at an altitude of approximately 250 miles above the surface of the earth. Assuming a circular orbit, what is the attractive force that the earth exerts to keep it in orbit? An object's mass does not change from place to place, but an object's weight does change because the gravitational acceleration ge depends on the square of the distance from the center of the Earth. Let's do a calculation and determine the weight of the Space Shuttle in low Earth orbit. On the ground, the orbiter weighs about 250,000 pounds.
Based on your experimental results, categorize each microbe as preferring isotonic environments, being halotolerant, or as a halophile.
Answers
The microbes present in the experiment were:
S. cerevisiae
S. epidermis
A way of categorizing microbes is according to the environment that they need to live in. In other words, we can classify them as isotonic, halotolerant and halophile.
If we put these two microbes in solutions of increasing concentrations, 1%, 7% and 15%, we will see that:
S. cerevisiae only grows when it is in a 1% solution.S. epidermis only grows when it is in a 1% and 7% solution.
In conclusion, S.cerevisiae prefers an isotonic environment. S. epidermis is halotolerant since it can grow in a more hypertonic environment. As none of them grows in a highly hypertonic solution, neither of them are halophile.
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Memory is___; therefore, ___.
1) an exact replica of an event; we should be confident about the accuracy of people's memories
2) like a video cassette recorder; we should wonder about the accuracy of people's memories
3) reproductive; we should wonder about the accuracy of people's memories
4) reconstructive; we should wonder about the accuracy of people's memories
5) reconstructive; we should be confident about the accuracy of people's memories
Answers
Memory is reconstructive and we should therefore wonder about the accuracy of people's memories.
Recalling an event via memory has the tendency to be influenced by other cognitive processes, including perception, beliefs, ideologies, imaginations, etc. This phenomenon, known as reconstructive memory, is one of the key theories of memory recall.
This is one of the reasons 2 people who witnessed an event will have different reports for the same event. Thus, the reconstructive memory theory leaves no other option but to wonder about the accuracy of people's memories.
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Which refers to the light-sensitive surface at the back of the eye?
1.lens
2.iris
3.retina
4.optic nerve
Answers
Which two generalizations can be made based on what you know about cycles of matter in a closed system?
A. New matter is added, and old matter is destroyed.
B. Matter changes its physical form, allowing it to return to its original state.
C. The amount of matter within the system remains the same.
D. Matter and energy can cross the boundaries of the system.
E. The cycle has a well-defined starting and stonninn noint
Answers
Answer:
C. The amount of matter within the system remains the same.
E. The cycle has a well-defined starting and stonninn point
Explanation:
The weaker the stimulus received by the neuron,
A. the stronger the action potential
B. the weaker the action potential
C. the stronger the local potential
D. the weaker the local potential
Answers
The weaker the stimulus received by the neuron,the weaker the action potential. That is option B.
What is action potential?Action potential is defined as the signals generated by neurons which is an electrical activity caused by a depolarising current in the neuron.
Practically, the greater the strength of a stimulus, the greater the number of action potentials generated in a nerve cell.
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from the roots up through the stems and into the leaves, replacing
the water used in ———— ??
Answers
Answer:
Transpiration
Explanation:
Plants lose water by transpiration.
What is a way of describing of stratus clouds
Answers
Answer:
Stratus clouds are low-level clouds characterized by horizontal layering with a uniform base, as opposed to convective or cumuliform clouds
Answer:
stratus clouds are low-level clouds characterized by horizontal layering with a uniform base, as opposed to convective or cumuli form clouds that are formed by rising thermals
Explanation:
Species: Fractus ; Nebulosus
Abbreviation: st
Classification: Family C(Low-level)
Genus: Stratus (layered)
8. Identify THREE structures found in plant cells but not in animal cells
Answers
Answer: cell wall, chloroplasts, plastids, and a central vacuole
Explanation:
Answer:
Vacuole
cell wall
chloroplast : photosynthesis
4. If there is lot of water in the cooling magma what is the texture? Where might this happen?
Answers
Answer:
glassy texture
Explanation:
After transcription and translation, does the mutation that was in the DNA change the amino acid that the second codon specifies?
Answers
Given what we know about genetic mutation, we can confirm that unless the mutation is of the silent type (and sometimes regardless of this), it will in fact change the amino acid that the codon specifies.
Mutations are changes in the DNA sequence of a cell that occur during the replication phase. Cellular mutations can be of many types, such as:
Insertion DeletionSubstitutionInversionand so on, each of which can have varying effects on the amino acid produced.
Most mutations will affect the resulting amino acid in some way. Insertion and deletion tend to be the most harmful mutation types as they alter the way in which the genetic code is processed. Some mutations, however, can be silent, meaning they have no harmful effects due to the fact that the new sequence either encodes the same amino acid or one with a similar enough function. This is possible through mutations like substitution.
Substitution mutations change one nucleotide in a sequence for another. At times, the new sequence will actually encode for the same amino acid as before despite the change. This is one of the only situations in which the amino acid will not be changed. Most often, if a mutation occurs, we can expect the resulting amino acid to change.
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Answers
2. Gravitational attraction also decreases
3. Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces. So as two objects are separated from each other, the force of gravitational attraction between them also decreases.
4. Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces. So as two objects are separated from each other, the force of gravitational attraction between them also decreases.
What is the true nature of science?
Answers
Answer:
Scientific Knowledge Is Based on Empirical Evidence; Scientific Knowledge Is Open to Revision in Light of New Evidence; Science Models, Laws, Mechanisms, and Theories Explain Natural Phenomena. Science Is a Human Endeavor; and. Science Addresses Questions About the Natural and Material World.
Please help me answer this I can´t remember the answer and can´t find the lesson
Answers
Answer
Neap Tide
Explanation:
I would say Neap tide because when the sun and moon are lined up a neap tide usually occurs.
