Imipenem = most effective has the least resistance (11%) and the second to least change in resistance from 1994 to 2000
Ampicillin = least effective would probably not be effective because it has the highest resistance and some change in resistance from 1994 to 2000
In the middle of the 1970s, Merck researchers Burton Christensen, William Leanza, and Kenneth Wildonger discovered the intravenous -lactam antibiotic imipenem (also known as Primaxin). [1] Carbapenems play a crucial part in the treatment of illnesses that are difficult to treat with other antibiotics because they are extremely resistant to the -lactamase enzymes produced by numerous multiple drug-resistant Gram-negative bacteria.
Imipenem was first patented in 1975 and given medical approval in 1985.
It was identified during a protracted, error-filled search for a more stable form of the naturally occurring substance thienamycin, which is created by the bacteria Streptomyces cattleya. Despite having antibacterial efficacy, thienamycin is unstable in aqueous solution, making it difficult to deliver to patients. [5] Gram-positive and Gram-negative, aerobic and anaerobic bacteria are all susceptible to imipenem's broad spectrum of activity.
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In the rat, the allele for red eye colour is dominant over the alleles for brown colour. Consider a cross between a rat that is an Hozygote dominant for eye colour and a rat that is an Hozygote recessive for eye colour.
1. Show the parental genetic cross between the two rats.
2. Use a Punnett square to show the F1 (filial generation).
3. Indicate the genotype and phenotype of the F1 generation.
4. With the results of the F1 generation, construct a Punnett square showing the results of an F2 (generation).
5. Indicate the genotype and phenotype of the F2 generation
Answer:
1) RR x rr
2) Shown below
3) 100% Rr with red eyes
4) Punnett square shown (Rr x Rr)
5) 25% of the offspring are h0m0zygous dominant with red eyes (RR), 50% are heterozygous with red eyes (Rr), and 25% are h0m0zygous with brown eyes (rr)
Explanation:
Let's say the allele for red eyes is R and the allele for brown eyes is r.
1. A cross between a h0m0zygous dominant (two copies of the dominant allele, R) and h0m0zygous recessive (two copies of the recessive allele, r) is: RR x rr
2. R R
r Rr Rr
r Rr Rr
The F1 generation is shown in the Punnett square above.
3. The F1 generation are 100% Rr. They are heterozygous. Since red (R) is dominant, the rats all have red eyes
4. A cross between the F1 generation (Rr x Rr) gives the F2 generation
R r
R RR Rr
r Rr rr
5. 25% of the offspring are h0m0zygous dominant with red eyes (RR), 50% are heterozygous with red eyes (Rr), and 25% are h0m0zygous with brown eyes (rr)
when the beaker pressure was lowered, which of the following decreased? when the beaker pressure was lowered, which of the following decreased? glomerular pressure, glomerular filtration rate and urine volume urine volume glomerular filtration rate glomerular pressure and glomerular filtration rate glomerular pressure
When the beaker pressure was lowered, the glomerular pressure decreased, which in turn decreased the glomerular filtration rate. As a result, the urine volume may also decrease.
Beaker pressure refers to the pressure outside the kidney's blood vessels, which can affect the pressure inside the glomerular capillaries. Glomerular pressure refers to the pressure inside the glomerular capillaries, which is important for filtering blood and forming urine. Glomerular filtration rate refers to the rate at which blood is filtered by the glomeruli, and is influenced by glomerular pressure. Urine volume is affected by the amount of fluid filtered by the glomeruli and the amount of water reabsorbed by the kidneys. So, when the beaker pressure is lowered, it can lead to a decrease in glomerular pressure and glomerular filtration rate, which may ultimately result in a decrease in urine volume.
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The light- independent reactions are also called the _____.
Answer: The light-independent reactions are also called the dark reactions or the Calvin cycle.
I hope this helps!
Fill in the blank. __________ and _________ activate the two primary cells responsible for granuloma formation in TB
Answer:
Macrophages and T cells activate the two primary cells responsible for granuloma formation in TB.
Explanation:
the two primary cells responsible for granuloma formation in TB are macrophages and T cells. Macrophages ingest and present M. tuberculosis antigens to T cells, which secrete cytokines that activate macrophages and recruit more immune cells to the site of infection. The interaction between macrophages and T cells leads to the formation of a granuloma, a structure that contains and isolates the bacteria from the surrounding tissue. Therefore, the answer is: Macrophages and T cells activate the two primary cells responsible for granuloma formation in TB.
Question
The cells ilustrations below represent diferent stages of meiosis. In which order would these
Which neural region would influence the biological clock if it were damaged?
a. substantia nigra.
b. lateral hypothalamus.
c. caudate nucleus.
d. suprachiasmatic nucleus.
Answer:
D. suprachiasmatic nucleus
HELP ME!!! please❤️
During osmosis, which of the
following is most likely to pass
through a selectively permeable
membrane?
A. glucose molecules
B. water molecules
C. charged molecules
D. large molecules
Answer:
water molecules
Explanation:
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a little summary how ultraviolet light could be the answer to the future outbreak
( Two paragraphs).
Ultraviolet light can be the answer to future outbreaks because it has the capability to kill the microorganisms present in air and thus can prevent the infectious diseases caused by them.
Ultraviolet light is the EM radiation with the wavelength range 10 nm to 400 nm. It is already being used in research labs for maintaining the microbe free environment. Researches are also being conducted to produce such ceiling lights that can be used normally in households so that the the air-borne microorganisms can be killed.
Microorganisms are the small living organisms not visible to the unaided eyes. They have the strong capability to produce their new variants by mutation and cause infectious diseases. The ultraviolet light can kill them even before they are able to transform themselves.
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Why are peregrine falcons a keystone species (in Arches National Park)?
Peregrine falcon live mainly in Alaska, Canada, and the western United States even though they are found everywhere in the world. They usually build their nest on a cliff or a rocky ledge.
What is keystone species?keystone species are a species that is extremely important to the ecosystem or something. If keystone species go extinct, it could cause a huge problem for the ecosystem.
Thus, They usually build their nest on a cliff or a rocky ledge.
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Need help, please!!! (Very important!)
sixth mass extinction.
What evidence do we have that we are losing species at more than the normal rate?
Answer:
Most ecologists believe that we are in the midst of the sixth mass extinction. Humanity’s impact on nature, they say, is now comparable to the five previous catastrophic events over the past 600 million years, during which up to 95 percent of the planet’s species disappeared. We may very well be. But recent studies have cited extinction rates that are extremely fuzzy and vary wildly.
Explanation:
In a newspaper editorial, a writer states that research on human embryonic stem cells is valuable and worthwhile. Which describes the most common argument against the writer's statement?A.In a scientific argument, some physicians argue that stem cells are not likely to be part of any beneficial application or medical treatment.B.In an economic argument, some experts argue that the benefits of stem cells are not worth the high cost of developing and implementing the research.C.In a scientific argument, some researchers argue that the goals of stem cell research would be easier to achieve by other means.D.In an ethical argument, some people argue that human embryonic cells should be protected.E.In a philosophical argument, some people argue that stem cell therapy would change the personality or identity of the person receiving it.
In my experience the answer would be:
"In an ethical argument, some people argue that human embryonic cells should be protected."
Because as with abortion, the general idea is that stem cells or embryos have life and must be protected. Therefore, there are many people against stem cell therapies. However, in the scientific community, stem cells are not considered conscious organisms.
do identical twins have the same fingerprints
Answer:
no
Explanation:
Identical twins do not have identical fingerprints, even though their identical genes give them very similar patterns. ... Small differences in the womb environment conspire to give each twin different, but similar, fingerprints. In fact, each finger has a slightly different pattern, even for your own fingers.
Variables – Procedure 2
1. What was the independent variable in Procedure 2? (1 point)
2. What was the dependent variable in Procedure 2? (1 point)
3. List three (3) controlled variables in Procedure 2. (1 point) (Hint: NOT Beaker C with the plain water)
and
Variables – Procedure 1
1. What was the independent variable in Procedure 1? (1 point)
2. What was the dependent variable in Procedure 1? (1 point)
3. List three (3) controlled variables in Procedure 1. (1 point) (Hint: NOT Beaker C with the plain water)
The independent variable in Procedure 2 was the type of solution or substance used in Beaker C (the beaker with the plain water).The independent variable in Procedure 1 could vary based on the specific experiment being conducted.
Variable 1
The dependent variable in Procedure 2 could vary based on the specific experiment being conducted. It could be a measurement or observation related to the behavior or properties of the substances in Beaker C.
Three controlled variables in Procedure 2 could include:
a. The volume or amount of each solution or substance used in Beaker C.
b. The temperature at which the experiment was conducted.
c. The duration or time interval for which the experiment was carried out.
Variables – Procedure 1:
It could be a factor that is manipulated or changed to observe its effects on the system or process.
The dependent variable in Procedure 1 would be the outcome or result that is measured or observed in response to the changes made to the independent variable.
Three controlled variables in Procedure 1 could include:
a. The initial conditions or starting point of the system or process being studied.
b. The equipment or apparatus used to carry out the experiment.
c. The environmental conditions, such as temperature or pressure, maintained throughout the experiment.
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Imagine that an angel’s trumpet tree is
looking for pollinators. It decides that an
advertisement for help is the best way to
get exactly what it needs. In the space below,
create a “Help Wanted” advertisement for the
tree.
Be sure to address these in your answer
Job title
• Job description
• Special skills needed
• Special equipment or tools needed
• Compensation (What does the worker
get in return?)
ASAP. 35 POINTSSSS
Explanation:
Job Title: Pollinator
Special Skills needed: Ability to reach deep into a long hole (no innuendo implied)
Special equipment or tools needed: Agility and (wings or beak)
Compensation: Nectar
Answer:
Job Title: Pollinator
Special Skills needed: Ability to reach deep into a long hole (no innuendo implied)
Special equipment or tools needed: Agility and (wings or beak)
Compensation: Nectar
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What is the MOST likely length of an mRNA that will code for a polypeptide with 150 amino acids?
Group of answer choices
450 nucleotides
All of these lengths are possible depending on the organism in which the mRNA is found.
50 nucleotides
>450 nucleotides
150 nucleotides
The most likely length of an mRNA that will code for a polypeptide with 150 amino acids is >450 nucleotides.What is mRNA?
Messenger RNA or mRNA is a single-stranded RNA molecule that carries genetic information from DNA to ribosomes for protein synthesis. mRNA is synthesized from DNA through a process called transcription.Most genes contain information that codes for the production of proteins. These proteins, in turn, are involved in the development and function of all living organisms.
The length of mRNA depends on the number of nucleotides, which is determined by the number of amino acids required to make a protein.In general, every three nucleotides on the mRNA molecule code for a specific amino acid. A string of such amino acids forms a polypeptide.
The polypeptide chain forms a protein through folding and further modifications.The most likely length of an mRNA that will code for a polypeptide with 150 amino acids is greater than 450 nucleotides because each amino acid is coded by a sequence of three nucleotides. Therefore, 150 amino acids would require a coding sequence of at least 450 nucleotides.
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Explain what fossils can tell us about ancient life
Fossils are remains of dead organisms that can help us to understand the evolution of life.
What are fossils?Fossils are preserved remains of dead life forms (e.g. dead plants and/or dead animals) that once lived on Earth.
Fossils can help to understand evolutionary patterns and also how organisms developed certain adaptations.
In conclusion, fossils are remains of dead organisms that can help us to understand the evolution of life.
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A group of individuals of the same species living together is called a:
Answer:
Population
Explanation:
R whale: right whale
S whale: Sperm whale
We can determine evolutionary links and the degree of relatedness between different whale species by examining DNA differences between different whale species.
Porpoises and sperm whales, spiny whales and hippos, and r whales are some examples of species sharing where there are only 2–4 DNA differences. These pairings mean that they are closely related and that they diverged recently from a common ancestor.
Hippopotamus, Porpoise, R whale and S whale are the four species that exist with each other in all possible combinations. This suggests that these four species had a more recent common ancestor than the other species, and that they are closely related to each other.
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Red bone marrow is found in the adult skeleton in all of the following places EXCEPT:
a. Medullary cavity
b. Metaphysis
c. Epiphysis
d. Pelvic crest
Red bone marrow is found in the adult skeleton in all of the following places EXCEPT the Medullary cavity. Red bone marrow is not found in the medullary cavity. Hence, option A is the correct answer.
Red bone marrow is found in several locations within the adult skeleton, including the medullary cavity, metaphysis, and epiphysis. However, it is not typically present in the pelvic crest.
The medullary cavity, also known as the marrow cavity, is the central hollow space within long bones. It contains yellow bone marrow, which is primarily composed of adipose (fat) cells.
In infants, the medullary cavity contains red bone marrow, responsible for hematopoiesis (formation of blood cells). As an individual matures, the red bone marrow gradually converts to yellow bone marrow, with red marrow being mainly confined to specific areas.
The metaphysis is the region of a long bone where the diaphysis (shaft) and epiphysis (ends) meet. It contains red bone marrow, which continues to play a role in hematopoiesis.
The epiphysis refers to the ends of long bones. It contains spongy bone, which houses red bone marrow. This red marrow is responsible for the production of red blood cells, white blood cells, and platelets.
While red bone marrow is present in the medullary cavity, metaphysis, and epiphysis, it is not typically found in the pelvic crest. The pelvic crest consists mainly of compact bone and contains yellow bone marrow.
Overall, red bone marrow is crucial for hematopoiesis and is primarily found in the medullary cavity, metaphysis, and epiphysis of long bones, excluding the pelvic crest.
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not answered question workspace check my work which letter indicates the area of the spinal cord that contains myelinated tracts?
The white matter of the spinal cord is composed of bundles of myelinated tracks.
White count number is placed in the deeper tissues of the mind subcortical. It consists of nerve fibers axons that are extensions of nerve cells neurons. a number of those nerve fibers are surrounded with the resource of a sort of sheath or protecting is known as myelin The letter A indicates the thalamus. understand that the thalamus includes the left and right our our bodies.
White remember number refers to regions of the significant nervous device CNS that are especially crafted from myelinated axons, moreover known as tracts. The white remember of the spinal cord is subdivided into dorsal or posterior lateral, and ventral or anterior columns, every of which contains axon tracts related to particular skills. The dorsal columns deliver ascending sensory data from somatic mechanoreceptors.
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what is the difference between eukaryotic and prokaryotic cells? (give 5 differences)
Answer:
Prokaryotes are always unicellular, while eukaryotes are often multi-celled organisms
eukaryotic cells are more than 100 to 10,000 times larger than prokaryotic cells
eukaryotic cells are more complex than prokaryotic cells
The DNA in eukaryotes is stored within the nucleus, while DNA is stored in the cytoplasm of prokaryotes
A Prokaryotic cell is surrounded by a single membrane layer but In the case of Eukaryotic, there are two surroundings 1. Plasma membrane 2. Nuclear membrane.
Explanation:
Bromine is a liquid at room temperature. The volume of a sample of bromine is measured in a 50 ml beaker and a 100 ml beaker. How will the two
measurements compare?
A. The volume of bromine will be larger in the 100ml beaker.
B. The volume of bromine will be smaller in the 50ml beaker,
C. The volumes will be the same.
D. Both A and B
The actual volume of bromine in each beaker will be same only the difference in height will be comparable. Therefore, option (C) is correct.
What are the properties of liquid ?A liquid's attributes are;
1) Compared to the volume occupied by a gas, the volume of a liquid is relatively stable at conditions that allow it to remain in the liquid state.
2) A liquid will take the form of the container it is placed in.
3) A liquid's surface in a container must be flat for the attraction forces between its molecules to be in equilibrium both at the liquid's surface and within its body.
Therefore, there will be variations in the measured height of the same volume of bromine in each beaker given that the volume of the bromine is measured in a 50 ml beaker and a 100 ml beaker.
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yoar until full yesting is reached at the end of the 7th yoar. True Falsec
The statement "Yoar until full yesting is reached at the end of the 7th yoar" is false because it contains multiple errors.
Firstly, the word "yoar" is likely a misspelling of the word "year." Secondly, the phrase "until full yesting is reached" is unclear and doesn't convey a meaningful idea. Additionally, the repetition of the word "yoar" at the end of the statement appears to be another typographical error.
Overall, the statement lacks coherence and logical consistency, making it impossible to identify a specific reason for its falsehood. It is important to ensure clear and accurate communication to convey accurate information and avoid confusion or misunderstanding or multiple errors.
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cells found in the nervous system that insulate, nourish and direct the growth of neurons as well as remove dead neurons and waste products are known as
The glial cells (glia) are the cells found in the nervous system that insulates, nourishes, and direct the growth of neurons, removing dead neurons and waste products.
These cells, referred to as the glue of the nervous system, are a part of the peripheral and central nervous systems. In the peripheral nervous system, the Schwann and satellite glial cells are found. In the central nervous system, there are five types of glial cells - microglia, radial glia, astrocytes, oligodendrocytes, and ependymal cells.
The glial cells provide and maintain a suitable environment for the neurons by giving them chemical and physical support. It also maintains homeostasis.
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Glial cells or the glia are the cells which are found in the nervous system and perform the function of insulating, nourishing and directing the growth of neurons as well as removing dead neurons and waste products.
Glial cells are basically a type of cell which provides physical as well as chemical support to the neurons and maintain their environment. They are located in the central nervous system or the CNS and peripheral nervous system.
Glial cells are also sometimes referred to as neuroglia or just glia. There are five basic types of glial cells namely radial glia, astrocytes, microglia, oligodendrocytes, and ependymal cells. They direct the growth of neurons and even remove the dead neurons as well as the waste product.
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During the fall reproductive season, the belly of a male brook trout becomes bright orange. The orange belly provides some camouflage and helps attract females. This trait
evolved in brook trout because, compared to males with pale bellies, males with bright orange bellies are more likely to:
O
A. Live in good habitats.
O
B. Be eaten by predators.
O
C. Mate with a female brook trout.
O D. Compete for food.
Which of these are analogous concepts from touch, vision, and hearing, respectively?
A. fast adaptation; dark adaptation; auditory adaptation
B. two-point threshold; rod and cone adaptation; two-tone suppression
C. megnalimbic coding; visualimbic coding; audiolimbic coding
D. somatotopic mapping; retinotopic mapping; tonotopic mapping
D. Somatotopic mapping; retinotopic mapping; tonotopic mapping.
Somatotopic mapping refers to the organization of the somatosensory system, where sensory information from different body parts is represented in an ordered manner on the somatosensory cortex. Retinotopic mapping refers to the organization of the visual system, where visual information from different regions of the retina is represented in a spatially organized manner in the visual cortex. Tonotopic mapping refers to the organization of the auditory system, where different frequencies of sound are represented in an orderly manner along the auditory pathway, from the cochlea to the auditory cortex. These concepts highlight the idea of spatial organization and mapping of sensory information in the respective sensory systems. They demonstrate how different areas of the brain are dedicated to processing specific aspects of touch, vision, and hearing, allowing for efficient perception and interpretation of sensory stimuli in each modality. are somatotopic mapping, retinotopic mapping, and tonotopic mapping.
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1. What is the positive and negative outcome of dinosaurs being
firmly embedded in today's popular culture?
Consequences of dinosaurs' pervasive presence in popular culture today - => They are large, ferocious, and dangerous to both people and the environment.
The development of evolutionary theory and other scientific ideas like plate tectonics and biogeography have both benefited greatly from research on dinosaurs. Humanity's fundamental need to learn more about how the universe functions and how we fit into the natural environment we see around us gives rise to all of these interests.
Since the term "dinosaur" was first used in 1842, there have been countless cultural representations of these animals. The non-avian dinosaurs have been used as both amusement and education in novels, movies, television shows, artwork, and other forms of media.
The representations range from the factual, as shown in the television documentaries from the 1990s through the early 2000s, to the outlandish, as seen in the monster films of the 1950s and 1960s.
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g for the cell shown below in the middle of mitosis, which statement represents a likely combination of chromatids in the two daughter cells that will be produced?
The chromatids are exact copies of each other and are bound by a centromere, which forms a structure called a chromosome.
During cell division, the sister chromatids, which are attached to the centromere, are separated from each other.The chromosomes are segregated into the daughter cells as they move apart.
Therefore, one possible combination of chromatids in the two daughter cells is that each will receive one copy of the replicated chromosomes (or sister chromatids).
This can be represented as 2n → 2n + 2n, where 2n is the parent cell with two copies of each chromosome, and 2n + 2n is the two daughter cells, each with one copy of each chromosome or sister chromatids.
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PLEASE HELP!!
When we assume that most people share our own attitudes and behaviors, what is the attributional bias called?
Group of answer choices
Primacy effect
Fundamental attribution error
Illusion of control
False consensus bias
Answer: Fundamental attribution error
Answer:
illusion of control
tbh call it whatever you want schools now in days i feal like are very controling
Explanation:
HELP. Are gills located internally or externally in the body of animal? DO NOT COPY FROM GÔO.GLE. I'VE ALREADY SEEN THAT AND I DON'T GET IT.
Answer:
sometimes.
Explanation:
external gills are most typically found in amphibians however fishes have internal gills.
The answer isnt yes or no, different species have different gills. Some of them internal others external. Hopefully this answers your question :)