Answer:
Explanation:
As they say, learning does not end at school. The true student is the lifelong desire to learn.
We can learn a lot from our past. The victories of our heroes who fought for our freedom. We must not forget them.
Let's fight for the right of every person to learn and expand his mind through free information.
HELP PLEASEEE 40 points!
1. How was penicillin developed after Fleming’s initial discovery?
2. How did sulfa drugs and penicillin alter World War II?
3. Why are companies not interested in producing antibiotics today? What might encourage them to research and develop new antibiotics?
4. What has contributed to antibiotic resistance?
5. What will happen if antibiotic resistance is not addressed?
Answer:
1. The discovery of penicillin changed the course of modern medicine significantly, because due to penicillin infections that were previously untreatable and life threatening were now easily treated.
2. World War II saw major advances in medical technology including the mass production of penicillin. On March 14, 1942, U.S. made-penicillin was used to successfully treat the first patient for septicemia, or blood poisoning
3. One of the biggest reasons the pharma industry is not interested in antibiotic drug development is that it is an extremely costly venture. According to estimates, the cost of developing an antibiotic is around $1.5 billion
4.Misuse and overuse of antimicrobials are the main drivers in the development of drug-resistant pathogens. Lack of clean water and sanitation and inadequate infection prevention and control promotes the spread of microbes, some of which can be resistant to antimicrobial treatment
5. A growing number of infections – such as pneumonia, tuberculosis, gonorrhoea, and salmonellosis – are becoming harder to treat as the antibiotics used to treat them become less effective. Antibiotic resistance leads to longer hospital stays, higher medical costs and increased mortality
Explanation:
i hope this helps :)
Fight or flight is a response to which kind of stimulus?
the external stimulus of heat
the internal stimulus of hunger
the external stimulus of danger
the internal stimulus of illness
Answer:
the external stimulas of danger
Explanation:
The flight or flight is the natrual intinct when in a dangerous situation, and is everyones go to response
Answer:
c
Explanation:
Fill in the blanks
Nebulae are____ where____ can form.
Dust and gas
Stars
Light
Gravity
Plants
SOMEONE HELP!
Nebulae are Dust and gas where Stars can form, hence option A, B.
How is nebula formed?Although there are less than ten atoms per cubic meter in intergalactic space, it is not completely vacuum. Nature, after all, detests emptiness! When a few atoms are close enough to one another to clump together, a nebula starts to form. Naturally, the gravitational influence of atoms increases with the number of clumps they form. Eventually, a sizable gaseous cloud forms in space as a result of them being able to drag even more particles toward them.
A nebula is primarily a cloud of gas and dust in space; when there are several, they are collectively referred to as nebulae. Some of the most beautiful celestial phenomena are nebulae, and many of them have been given names that refer to things we are familiar with, like the land.
Therefore, option A, B are correct.
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9. The following materials can be reused, EXCEPT
A. woods
B. paper
C. aluminum cans
D. paint brush
Answer:
B. paper
Explanation:
Once paper has been used there's no other way of reusing it physically, but chemically paper can be reused in one way or another...
Can any body help me plzz
Which of the following will have a negative environmental effect on future generations?
The one that may have a negative environmental effect on future generations is the climate change that is in Option A, as the continued emission of greenhouse gases into the atmosphere is causing global temperatures to rise, which can have a range of negative impacts on ecosystems.
One of the options listed that will have a negative environmental effect on future generations is climate change. Climate change is caused by the accumulation of greenhouse gases, such as carbon dioxide, in the atmosphere, which trap heat and lead to rising global temperatures. This can have a range of negative impacts on ecosystems, including more frequent and severe natural disasters, sea level rise, and loss of biodiversity.
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complete question is below
Which of the following will have a negative environmental effect on future generations?
a climate change
b soil fertlity increase
What is true about cellulose?
Answer: It is made of glucose
Answer: Is D
Hope It Helps
When two parents heterozygous for genes for curly hair are crossed, what percent of their offspring would have curly hair? What percent would have straight hair?
Answer:
75% curly
25% straight
Explanation:
When two parents' heterozygous for genes for curly hair are crossed, 75% of their offspring would have curly hair, while 25% of their offspring would have straight hair.
What do you mean by Heterozygous?Heterozygous may be defined as the presence of two different alleles at a particular locus. It always includes one normal allele and one mutated allele.
Here, the allele for curly hair is dominant over the allele for straight hair. So, the offspring who carry the pure dominant and heterozygous alleles for curly hair would have the phenotype of curly hair, while the offspring who carry both the recessive allele would have the phenotype of straight hair.
Therefore, when two parents' heterozygous for genes for curly hair are crossed, 75% of their offspring would have curly hair, while 25% of their offspring would have straight hair.
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transgenic plants are plants having?
a)no gene
b)Genes in transposition
c)Genes with no function to perform
d)Genes of another organism
The condition that is most likely causing M’Kenna’s symptoms is
Which describes a eukaryotic cell, but not a prokaryotic cell? a. uses DNA to control cell activities b. is surrounded by a cell membrane c. makes and uses proteins d. contains DNA in a nucleus
Answer: Eukaryotic cells are larger than prokaryotic cells and have a “true” nucleus, membrane-bound organelles, and rod-shaped chromosomes. The nucleus houses the cell's DNA and directs the synthesis of proteins and ribosomes.
So..the answer should be D. Eukaryotic cells have a true membrane-bound nucleus and prokaryotes do not
All cells have a plasma membrane, ribosomes, cytoplasm, and DNA. Prokaryotic cells lack a nucleus and membrane-bound structures. Eukaryotic cells have a nucleus and membrane-bound structures called organelles.
So..it can't be C. or A. or even B.
Correct me if I'm wrong.
Assertion (A): Birds have hollow bones and stream lined bodies.
Reasoning(R): Hollow bones are the only feature, which enable the birds to fly.
a.Both A and R are true and R is the correct explanation of A
b.Both A and R are true but R is not the correct explanation of A
c.A is true but R is false
d.A is false but R is true
Answer: it is A.
Explanation: because they are both about the birds bones and birds need to fly if they don't have bones they can not fly
Main Steps of the Scientific Method: 1. ________________________________________ 2. ________________________________________ 3. ________________________________________ 4. ________________________________________ 5. ________________________________________ 6. ________________________________________
The scientific method is a systematic approach used by scientists to investigate and understand the natural world these steps are iterative, meaning that scientists often repeat the process, refining their hypotheses and experiments to gain a deeper understanding of the phenomenon under investigation.
It involves a series of steps that help ensure objectivity, reproducibility, and reliability in scientific research.
The main steps of the scientific method are as follows:
Observation: The first step involves making careful observations of a phenomenon or a problem in the natural world.
Scientists use their senses or instruments to gather data and identify patterns or interesting phenomena.
Question: Based on the observations, scientists formulate a research question that addresses the underlying cause or mechanism of the observed phenomenon.
The question should be specific and testable to guide the subsequent steps.
Hypothesis: In this step, scientists propose a possible explanation or solution to the research question.
The hypothesis is a tentative statement that can be tested through further experimentation or observation.
It should be based on existing knowledge and provide a clear prediction.
Experimentation: Scientists design and conduct experiments to test the hypothesis.
They manipulate variables, control conditions, and collect data to analyze and draw conclusions.
The experiment should be carefully planned, with appropriate controls and statistical methods to ensure accurate and reliable results.
Analysis: After collecting the data, scientists analyze the results using statistical methods or other analytical techniques.
They examine the data to determine if it supports or refutes the hypothesis.
This step involves organizing and interpreting the data to draw meaningful conclusions.
Conclusion: Based on the analysis, scientists draw conclusions about the hypothesis.
If the data supports the hypothesis, it may be accepted as a plausible explanation.
If the data does not support the hypothesis, scientists may revise the hypothesis or propose alternative explanations.
Through this iterative process, scientific knowledge advances and contributes to our understanding of the natural world.
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Dead cells which remain at the center of the stem are called
•pith
•bark
Answer:
Pith
Explanation:
took it before
We can educate people from the ecological footprint that the 3 main factors of the footprint are transportation, housing and food decisions.
To educate the people, you can start by following some simple steps to reduce your own ecological footprint. We can improve the way we live, what we buy, and how we participate in the community to reduce greenhouse emissions.
What is an ecological footprint?The Ecological Footprint measures how fast we consume resources and generate waste compared to how fast nature can absorb our waste and generate resources.It is the impact a person or community has on the environment, expressed as the amount of land required to sustain their use of natural resources. To reduce ecological footprint we must reduce our personal emissions and press the government to make laws to ensure that larger emitters do the same.Certain sustainable practices (like recycling, paper vs. plastic, paper towels vs. cloth) do not have an extremely significant effect in reducing the ecological footprint.The 3 main factors of the footprint are transportation, housing and food decisions.Follow some of these steps to reduce your ecological footprint
Incorporate walking to some of your regular short-trip destinations.Reduce use of Single-Use, Disposable Plastics. Switch off lights and unplug devices when you're not using them. Eat more food that is made locally and less meat. A great place to start is by shopping at your local farmer’s market. The meat industry is a major source of greenhouse gas emissions.Use alternative transportation (bus, train, carpool, or bike) to get to work one day per week.Switch to Renewable Energy.When considering factors like food, water-use, waste and transportation, there is an urgent need for these sustainable daily actions.
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How are geologic timescales created?
Answer:
The fossil forms that occur in the rocks, however, provide the chief means of establishing a geologic time scale, with the timing of the emergence and disappearance of widespread species from the fossil record being used to delineate the beginnings and endings of ages, epochs, periods, and other intervals.
Answer: The fossil forms that occur in the rocks
Explanation: Trust me
What does heartworm prevention kill?
-adult worms
-microfilaria
-immature adult worms
-vectors
the microfilarae will suddenly die
What would happen to this ecosystem if another apex predator, such as a killer whale, was introduced?
The introduction of an apex predator, such as a killer whale to an ecosystem can have significant impacts on the existing food web and ecosystem dynamics.
Thus, the presence of a new apex predator, such as a killer whale increases the competition between the existing apex predator and the newly introduced predator for food resources, such as seals and sea lions.
The introduction of a new apex predator can also affect the behavior of the existing species. For example, the seals can change their behavior to protect themselves from predation by the killer whale by changing their movement patterns.
The introduction of a new apex predator like a killer whale to this ecosystem require careful monitoring and management to minimize the negative impacts on the ecosystem.
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ASAP hurry help
The main sugar that is used as a reactant in celular respiration is called
Answer:
glucose
Explanation:
Michelle is American and she absolutely believed that she would never every marry someone from another country. However, when she met Hans who hails from Sweden, she fell in love and decided to marry him several months later. Michelle's experience best illustrates
Michelle's experience best illustrates that she was yet to experience another culture and changed her mind when she met Hans.
For a person that is yet to truly experience another culture apart from theirs, there is usually:
Culture shock when they experience one aspect of another culture which ma make them to make certain decisions, just like Michelle did.Cultural bias which makes them believe that their culture is superior to others.Part of this could be why Michelle made the decision not to marry someone from another country, until she met and fell in love with Hans, from Sweden.
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Read the information for transcription and then answer the question.
Protein Synthesis
Explain the process of transcription
Answer:
Protein synthesis is the process which synthesizes proteins by the information coded in the DNA molecule with the help of two distinct process takes place in order namely transcription and translation.
Transcription is the first process of the central dogma or the protein synthesis that produces mRNA molecule that carries all the information stored in the DNA molecule out of the nucleus (in eukaryotes only) to the ribosome where the second process Translation takes place.
Untwists then unzips of DNA molecule is catalyzed by RNA polymerase result in the Hydrogen-bonds between the strands break .
Creates complementary base pairs with bases of the DNA strand with help of free RNA nucleotides
weak hydrogen bonds and sugar-phosphate bonds form between base pairs and RNA nucleotides respectively
mRNA strand is synthesized and peels off the DNA and transported or pass from the nucleus to cytoplasm
Answer:
Transcription converts
*DNA
*mRNA
*Nucleus
*Cell
in this order
Explanation:
You are a reporter working in 2001 who's just been assigned a story on how ciprofloxacin may save the lives of Senate staff exposed to anthrax. Complete a short paragraph that links how DNADNA is replicated to defense against this act of bioterrorism.
Match the terms in the left column to the appropriate blanks in the sentences on the right. Terms can be used once, more than once, or not at all.
separate tensed
ligase unwinding
relaxed enhances
inhibits uniting
gyrase join
helicase
Bacterial DNA is a double-stranded helix that has to ___________ its strands during replication. The _______ of DNA strands at the replication fork creates twists farther down the helix that need to be ______ by DNA _______. Ciprofloxacin ______ this enzyme to block DNA synthesis and stop the deadly bacteria from growing.
Answer:
Bacterial DNA is a double-stranded helix that has to separate its strands during replication. The unwinding of DNA strands at the replication fork creates twists farther down the helix that need to be relaxed by DNA gyrase. Ciprofloxacin inhibits this enzyme to block DNA synthesis and stop the deadly bacteria from growing.
Explanation:
DNA which stands for deoxyribonucleic acid is the molecules that stores genetic information in most living organisms. For successive reproduction to take place as well as growth to occurs in organisms, the genetic information stored in the DNA must be copied into new cells. This is achieved through the process of DNA replication.
DNA is a double-stranded molecule that is helical in shape. For replication to occur, the double strands has to be separated so that the information stored within can be accessed and then copied. DNA helicases are enzymes which are essential during DNA replication because they separate double-stranded DNA into single strands allowing each strand to be copied. The unwinding of DNA strands at the replication fork creates twists farther down the helix that need to be relaxed otherwise, the DNA strands will break. The enzyme responsible for relaxation these twists is known as DNA gyrase. Thus, any drug like Ciprofloxacin than inhibits DNA gyrase will block the DNA replication process in bacteria thereby stopping the growth of the bacteria.
Bacterial DNA is a double-stranded helix that has to separate its strands
during replication. The unwinding of DNA strands at the replication fork
creates twists farther down the helix that need to be relaxed by DNA gyrase.
Ciprofloxacin inhibits this enzyme to block DNA synthesis and stop the
deadly bacteria from growing.
The antibiotic referred to as Ciprofloxacin acts on the DNA of the bacteria
and it does this by inhibiting the enzyme that is required for DNA
synthesis. This stops replication and the anthrax bacteria from growing and
forming new organisms.
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An anteater can eat 30,000 ants in a day. In about
or pat 1 million ants?
The number of days it would take an anteater to eat about one million ants, given the rate it eats in a day, is 33. 3 days .
How to find the number of days ?To find the number of days it would take the anteater to eat one million ants, you can use the rate given of 30, 000 ants per day.
The number of days it would take can be found by the formula :
= Number of ants / Number of ants eaten per day
Number of ants = one million ants
Number of ants eaten per day = 30, 000 ants
The number of days it would take it therefore :
= 1, 000, 000 / 30, 000
= 33. 3 days
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Whales, sharks, and penguins, all in different classes of animals, have streamlined bodies with fins or flippers for efficient movement in water.
Ceovolution
Convergent Evolution
Divergent Evolution
Answer:
I believe it would be Convergent Evolution
Describe the chemistry of amino acids that make up a transmembrane protein
Explain why tate of diffusion of carbon dioxide increases during exercise
Answer:
Hi
Please mark brainliest ❣️
Explanation:
When the body undergoes exercise, your body needs more energy, which means your tissues consume more oxygen than they do at rest.
Consuming more oxygen means you will also produce more carbon dioxide because your metabolic rate is elevated.
Answer:
During exercise, blood spends up to half the normal time (one second at rest) in the pulmonary capillaries due to the increase in cardiac output moving blood around the body more quickly.
Explanation:
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How should an empty container of a P-listed medication be disposed of?
A) In a BLUE and WHITE pharmaceutical waste container
B) a BLACK container
C) In a RED bag
D) In a regular trash can
Amoeba Sisters Video Select Recap: Mitosis vs. Meiosis Comparison
Could i get help with this?
Answer:
Both mitosis and meiosis occurs in Amoeba.
Explanation:
Both mitosis and meiosis occurs in Amoeba. Those kinds of Amoeba that reproduces through asexual reproduction uses mitosis in which a single parent Amoeba cell is divided into two identical daughter Amoeba cells while on the other hand, Myxamoeba reproduce through sexual reproduction in which meiosis cell division is used. In this type of reproduction, the daughter Amoeba is different from their parents Amoeba.
where does the calvin cycle occur? a structure of a chloroplast. letters from a to e indicate definite structures. letter a indicates the outer envelope of the chloroplast. letter b indicates the inner envelope of the chloroplast. letter c marks a column that consists of flattened oval structures. letter d marks one flattened oval structure. letter e indicates the substance surrounded by the inner chloroplast membrane. where does the calvin cycle occur? a structure of a chloroplast. letters from a to e indicate definite structures. letter a indicates the outer envelope of the chloroplast. letter b indicates the inner envelope of the chloroplast. letter c marks a column that consists of flattened oval structures. letter d marks one flattened oval structure. letter e indicates the substance surrounded by the inner chloroplast membrane. b e a c d
the calvin cycle happens Calvin cycle reactions occur in the stroma as opposed to the light reactions, that occur in the thylakoid membrane.
The stroma of cancer?Historically, the structural components holding tumor tissues together have been regarded as the tumor stroma. The non-cancer cell and non-immune cellular components of tumors are how it is generally defined.
Describe the stroma in a chloroplast.A sizeable region enclosed by the inner membrane is the stroma, which resembles the mitochondrial matrix and contains a number of metabolic enzymes. Similar to the mitochondrion, the chloroplast has its own genome and genetic system. Therefore, in addition to a DNA & ribosomes of a chloroplasts, this same stroma also has its own set of RNAs.
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What I Have Learned DIRECTIONS: Fill in the blanks with correct word/s. Write your answers on a separate sheet of paper. 1. Any push or pull is called 2. refers to the size or strength of the force while points to where the object goes. The direction of the arrowhead indicates the direction of the force. The length of the arrow represents the amount of force (relative magnitude). 3. There are two types of forces, namely and 4. Applied, friction, normal and tensional forces are examples of forces. 5. Gravitational and magnetic forces are examples of forces. 6. are forces that are equal in magnitude but opposite in direction.
Force is push or pull that stops a moving object or moves an object which is at rest.
Any push or pull is called force. Magnitude refers to the size or strength of the force.The direction of an arrow shows the direction of the force , and the length of the arrow shows us the amount of the force. There are two types of forces, i.e. contact forces and act at a distance force. Applied, friction, normal and tensional forces are examples of contact forces.Gravitational and magnetic forces are examples of act at a distance forces. Balanced forces are forces that are equal in magnitude but opposite in direction.Learn more: https://brainly.com/question/24657609