Which best describes the development of penicillin?

A.It was originally discovered as a product produced by plants


B.It was originally discovered from mold growing on petri dishes.

C.It was originally discovered to be ineffective

D. It was originally discovered to treat viral conditions.

Answers

Answer 1

Answer:

There is a hack in forms that forms gives u the answer hold ctrl + u, and scrool to the bottom he read the part with the question and there will be an answer.

Mark as brainliest if im right good luck!!

If this question is a Form if not sorry for waisting your question!!

Answer 2

Answer:

The answer is B. Penicillin is made up of fungi and bacteria and was the first antibiotic.


Related Questions

the distance covered by a bus is measured by an instrument called​

Answers

Answer:

Odometer

It is measured by an instrument called odometer.

Question:
The phenylketonuria occurs in 1 of 10,000 individuals in a population. It is
caused by an autosomal recessive allele. Calculate the frequency of heterozygotes
in the population.

Answers

Answer:

10000 divided by 1 and then that answer


Matter is passed from the living part of an ecosystem to the non-living part when which of the following takes
place?

A. Plants absorb gases

B. Plants decompose

C. Animals eat plants

D. Animals drink water

Answers

C i believe if not B

A drought decreases the water level in Lake Winnipeg. The carrying capacity of the lake decreases.
Limiting factor?

Explain

Answers

Answer:

Water, fish

Explanation:

The limiting factors are the water of course and the organisms living in the lake.

A drought decreases the water level in Lake Winnipeg and the carrying capacity of the lake decreases. This is because it is:

Density Independent

When something is said to be density Independent with respect to ecology, it means that an external force is able to influence the volume of a habitat, notwithstanding the density.

As a result of this, this particular principle is in place here as a drought which is an external factor is able to affect the size of the water.

Read more here:

https://brainly.com/question/9513807

Why do large islands usually have more species than smaller islands?

Answers

Answer: Reason Why

Explanation: A bigger target is easier to hit than a small one, and a big island is more likely to have species land on it by chance than a small one is. Larger islands have more space than smaller islands, so there are likely to be more resources available for species to use. The opposite is true for smaller islands.

how do the structures of a vacuole and a nucleus differ?
A. a vacuole is enclosed within a membrane ,and a nucleus is not enclosed within a membrane.
B. a vacuole is thick fluid , and nucleus is rigid set layers
C. a vacuole contain no water , and a nucleus a mostly water
D. a vacuole contain mostly water, and a nucleus contain mostly DNA

Answers

Answer:

D

Explanation:

Vacuoles are pockets that collect water and the cell's junk. The nucleus sends commands to other cell parts and contains DNA.

Why it isn't A: Both have membranes.

Vacuole- tonoplast. Nucleus- Nuclear membran.

Why it isn't B: The Vacuole is not a thick fluid, though it may hold thick fluid.

Why it isn't C: This should be obvious.

Give two examples of elevation

Answers

Answer:

♥️pls sana po nakakatulong♥️

What is structure 1?

Answers

Answer:

Bro give a chart or something not just a question with no info.

Explanation:

. Students decide to remove the litter from an abandoned park and plant trees. Which of the following observations provides the best evidence that the action of the students has had a positive effect on the health of the park ecosystem?
A. The number of human visitors decreases.
B.The level of yearly precipitation increases.
C.The number and diversity of animals increases.
D.The average daily high temperature decreases.

Answers

Answer:

c

Explanation:

In 1847, the German biologist Christian Bergmann noted that mammals and birds living at higher latitudes (farther from the equator) are on average larger and bulkier than related species found at lower latitudes. Suggest an evolutionary hypothesis to explain this observation.

Answers

Answer:

not quite sure how to do the hypothesis but its likely to be something to do with the fact that they need more fat and muscle due to the thinner atmosphere as respiration is harder to occur.

Explanation:

what happen to LH and FSH during ovulatory phase???​

Answers

Answer:

LH and FSH also trigger an increase in the production of the female hormone estrogen .as estrogen rise,like a switch, it turns offthe production of follicle stimulating hormone.

Which of the following correctly describes a cell that is haploid. There is more then one correct answer.


A cell with a single set of chromosomes

Includes zygotes

In humans contains 46 chromosomes

In humans contains 23 chromosomes

All cells except gametes

Includes gametes

A cell with two sets of chromosomes

Answers

Explanation:

a cell with a single set of chromosomes

in humans contain 23 chromosomes

includes gametes

Question 4
Which of the following is not considered hazardous waste?
A
dead batteries such as those used in flashlights and radios
B
rotting meat and other food waste
С
metals such as lead and mercury
D

Answers

b rotting meat and other food waste

GIVING BRAINLIEST ANSWER CORRECTLY FOR 40 POINTS
List 3 people from the history of biotechnology and write one sentence about each persons contribution​

Answers

Answer:

Karl Ereky

Explanation:

He discovered it

what is self-imcompatibilty???​

Answers

Explanation:

Hope it will help you to solve your question.

Answer:

hiiiiiiiiiiiiiiiiiiii

Explanation:

understand

A researcher exposes a bacterial culture to UV radiation and then subjects it to progressively higher temperatures. As the temperature increases, the bacteria have a progressively harder time surviving. Analysis of the dead bacteria reveals large amounts of misfolded, aggregated proteins compared to wild-type control bacteria exposed to the same temperature increase. Which of the following is a plausible explanation for the data?
A. The ribosomes are mutated and are non-functional.
B. The initiator tRNA (fMet) has been mutated and is non-functional.
C. Molecular chaperones have been mutated.
D. DNA polymerase is mutated and non-functional.

Answers

Answer:

C. Molecular chaperones have been mutated.

Explanation:

In prokaryotes; transcription and translation occur consecutively. Protein doubling additionally happens following the translation. The heat stun proteins or molecular chaperones are imperative to assume a part in the appropriate collapsing of the protein. At high-ranging temperatures, the protein misfolding can be ascribed to a change in mutation of the molecular chaperones.

How do we know that height in humans
is a polygenic trait and not a single-gene
trait?

A. There is no way to know for sure.

B. People have varying heights.

C. Height is too complex to be controlled by a single gene.

Answers

C.........................

How are taxonomic keys used?

Answers

Answer:

A taxonomic key is a simple tool used to identify a specific object. A taxonomic key is one of the most useful tools available to scientists trying to identify an unknown organism. Systematists rely on keys to help identify known organisms and determine whether they have discovered a new organism entirely.

Explanation: Hope this helps

Do you think humans would be
as dominant if the dinosaurs
were still present?

Answers

Answer:

Probably not, as we might have evolved to become prey instead of predator

Answer:

i dont think so.

Explanation:

the dinosaurs would've already ate us, and crushed the cities. dinosaurs are too dangerous for us. especially the T-rex.

Define the following term:
1. Pinhole camera

2. Screen

Answers

Pinhole camera: a camera with a pinhole aperture and no lens

Screen:a fixed or movable upright partition used to divide a room, give shelter from drafts, heat, or light, or to provide concealment or privacy.

What is the function of a cell's nucleus?
It controls all the functions of a cell.
It stores the food, water and wastes in a cell,
It holds the cell together
It helps the cell take in nutrients

Answers

Answer:

It controls all the functions of a cell.

Explanation:

     

Proteins on the surface of a human cell and on a bird influenza virus are represented in the diagram below. Describe a change in the bird influenza virus that would allow it to infect this human cell.

Answers

Answer:

Viral proteins can modify the most superficial portion in such a way that it is complementary to the receptor of the human cell.

Generally this happens due to a genetic recombination between an avian virus and a human virus within the respiratory epithelium of the pig: this process underlies the emergence of new, more virulent strains of the influenza virus and underlies the emergence of influenza pandemics

. Which of the following would you expect to have cells with a cell membrane? *
1 point
panda bears
pine trees
spiders
all of the above

Answers

Answer:

All of the above!

Explanation:

I'm just sure it's that.

Answer:

The answer is all of the above

Explanation:

Both plant and animal cells have a cell membrane.

Predict: How do you think a period of hot summers will affect the rabbit population?

Answers

A period of hot summers will actually affect the rabbit population in a positive way. It will allow the population to increase in size and get ready for harsh weather that is to come for the rest of the year.

Explain why a person with brain damage may be able to see perfectly well, but not recognize faces.​

Answers

Answer: Some people with a brain injury acquire a condition known as prosopagnosia(pronounced pro-so-pag-no-sia), or ‘face blindness’. People with the condition cannot tellthe difference between faces, an ability most of us take for granted. They may not evenrecognise the faces of their closest friends and family, or their own face in the mirror.

Why is family history thought to be important and a good predictor of an individual’s disease risk factor?

Because family members most closely represent the unique genomic (DNA) and environmental interactions that individuals experience

Because doctors can determine your family’s risk from your ailments

It is important to know family history so that a doctor can issue the right antibiotic to prevent cancer

So that doctors can know how your 1 st line of defense reacts to antibiotics mi

Answers

Answer:

The first answer, Because family members most closely represent the unique genomic (DNA) and environmental interactions that individuals experience. Is right

Explanation:

Question 7
5
Parents are exposed to hazardous chemicals. How might this affect their
future offspring?
The chemicals could make the parents sick before they have offspring,
The offspring could inherit damaged DNA from the parents.
The offspring could have red hair

Answers

Answer:

The offsprings could inherit damaged DNA from the parents.

Explanation:

The hazardous chemicals may cause mutations to the DNA.

A salt marsh community includes egrets, gulls, and marsh crabs living together in a salt marsh. What does one female egret represent?

Answers

Answer:

It is a tool for keeping population in equilibrium state.

Explanation:

One female egret represents that she is a tool for the continuity of its breed or species because female egret lays eggs and reared their offspring in order to maintain its generation in that salt marsh area. These female egrets are the essential part of this salt marsh ecosystem due to the ability to control the population of other organisms through feeding behaviour. These female egrets helps in maintaining the equilibrium of the ecosystem by constantly producing baby egrets.

CAN SOMEONE HELPP ME :(

Answers

I think it could be the answer b

Similarities between tridax plant and elephant grass

Answers

Answer:

ok so basically they just

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The area of a circle is 81 pi in2 what is the circumference in inches express ur answer in terms of pi Similarity between the US and Cherokee constitution ? A man who is 2m tall stands on horizontal ground 30m from a tree . The Angel of elevation of the top of the tree from his eyes is 28 . Fine the distance between the man eyes to the top of the tree A student keeps an onion bulb in a jar filled with water and observes that the roots continue to grow in length. The student cuts a root tip and observes it under a microscope. The image shows the observations. Which option supports the reason for an increase in the roots length?The root cells undergo meiosis to expand and increase in length.The root cells undergo mitosis to combine together to make the root grow.The root cells undergo mitosis to form new identical cells.The root cells undergo meiosis to form different types of cells. Help meeee if you want to please thank you have a good day if a sector of a circle has a radius of 15m and an arc length of 25 meters, find the centralangle in degrees Please hurry this is 7th grade hon Use the Distributive Property to simplify the expression. 4 (c+3) Please help me with the correct answers!! Rehana has some money. After she spends Rs 15, she has three-quarters of the initial amount left. The amount left isA:60B:40C:45 A member of a population of genetically identical organisms that were produced from a single cell. abacteriophage bclone ctransgenic drestriction enzyme Write an equation to help Stacy find the gravitational force on an object if she knows the mass. In the equation, let W represent gravitational force, m represent mass, and g represent the ratio you found in part D. Test your equation using a set of values from the table to be sure it works. Im am not a man im a inmatePART A: Which of the following best identifies the articles central idea? Sonia Oopsmeyer, who is proud of how fast she can punch numbers into her calculator, divided a number by 40 instead of multiplying it by 40. Her answer, which was wrong, was 20. What is the correcr answer? Describe the steps you took to find the correct answer. Only one answer one choice A tessellation has 2 pairs of congruent angles around the point of intersection. The measure of each of one pair of congruent angles is 28. What is the measure of each one of the other pair of congruent angles? The measure of each one of the other pair of congruent angles is Solve for y .5y8(7y+4)=79(2y) asap If you were an athletic trainer and you are in a football match and suddenly the running back got an injury in his hip, and is in the ground in so much pain, what would you do? And what you should not do? 10) A circle has center at (-5, 3) and passes through the point (-1, 3).a) Give the radius of the circle.b) Give the equation of the circle described. A stone falls from rest from the top of a cliff,a second stone is thrown do wnward from the same height 2sec later with an initial speed of 30m/s.If both stones hit the ground below simultaneously,how high is the cliff?