Answer:
Antibiotics are compounds produced by bacteria and fungi which are capable of killing, or inhibiting, competing microbial species. ... But it was not until 1928 that penicillin, the first true antibiotic, was discovered by Alexander Fleming, Professor of Bacteriology at St.
the skin is the largest organ in your body which of the following describe the function of the skin???
Answer:
where's the following?
What impact did the Industrial Revolution have on the economies of the North and South ???
Answer: production.
Explanation:
What are things you can learn about the shape of earth surface from contour lines
I’ll give brainliest
Answer:
this might help u
Explanation:
Most people are probably familiar with contour lines found on topographic maps, which show elevation. Contour lines can also show weather and climate data, such as temperatures and humidity. Less common, bathymetry (the depth of water bodies) can also be shown using contours.
Answer:
The first answer (slope) is correct
Explanation:
they show you the SHAPE of the earth example being valleys and mountains
There are several mechanisms through which reproductive isolation occurs. Which situation is an example of behavioral isolation?
A.
Mules, the offspring of a male donkey and a female horse, are unable to reproduce because they are sterile.
B.
Males of different, closely related species of fireflies signal for mates by flashing different light sequences.
C.
The reproductive organs of snails only properly align when the male and female belong to the same species.
D.
Red and purple sea urchins cannot reproduce with one another because the sperm and egg cannot fuse.
Answer: B. Males of different, closely related species of fireflies signal for mates by flashing different light sequences.
Reproductive isolation refers to the inability of the members of a species to breed with members of other species. Behavioral isolation is a type of reproductive isolation, in which mating between the members of the species is facilitated by their behavior. It helps members of the same species to identity their mates. It prevents mating between population of distinct species.
Males of different, closely related species of fireflies signal for mates by flashing different light sequences is an example of behavioral isolation because flashing of light by fireflies is the behavioral characteristic which shows their desire for mating. The mates identify the light signals flashed by their partner belonging to the same species.
Answer:
B. Males of different, closely related species of fireflies signal for mates by flashing different light sequences.
Hope this helps!
Explanation:
What is the experiment called, and what is its significance?
A. The Hershey-Chase experiment showed that the radioactive DNA is found inside the
Infected bacteria; therefore, DNA Is the molecule that carries genetic Information,
B. The Hershey-Chase experiment showed that viruses with other radioactive DNA or
radioactive protein can Infect bacteria; therefore, both types of molecules can carry
genetic information.
.
C. The Franklin X-ray experiment showed that radioactive DNA forms a helical structure
Inside the infected bacteria; therefore, DNA is the molecule that carries genetic
Information.
D. The Franklin X-ray experiment showed that either radioactive DNA or radioactive
protein can form a helical structure Inside the infected bacterla; therefore, both types of
molecules can carry genetic Information,
OA
Answer:
The most well-known Hershey-Chase experiment was the final experiment, also called the Waring Blender experiment, through which Hershey and Chase showed that phages only injected their DNA into host bacteria, and that the DNA served as the replicating genetic element of phages
Explanation:
Cómo los avances de la ciencia y la tecnología sin control puede llegar a afectar al ser humano, demás seres vivos y el entorno.
Answer:
nuevas tecnologías y desarrollos científicos muchas veces conllevan un potencial para generar daños irreversibles sobre las poblaciones humanas y el medio ambiente
Explanation:
Los avances científicos y tecnológicos conllevan grandes ventajas para la humanidad y simultáneamente también riegos que pueden producir daños irreparables en las sociedades y el medio que las rodea. Por ejemplo, el dominio de la tecnología basada en el uso de la fisión nuclear ha sido beneficioso para obtener grandes cantidades de energía, pero también este desarrollo conlleva la producción de armamento nuclear que pone en riesgo a las sociedades y al medio ambiente. Otro ejemplo puede estar representado por el uso de la tecnología de edición genómica CRISPR-Cas, la cual ha sido recientemente desarrollada. Esta tecnología ha llevado esperanza para el tratamiento de enfermedades genéticas hereditarias a través de la restauración de la función génica. Sin embargo, la técnica CRISPR-Cas de edición genómica ha sido recientemente utilizada para desarrollar bebés editados genéticamente, aún cuando los efectos secundarios que dicha tecnología no han sido completamente resueltos (efectos de edición genómica en regiones genómicas no deseadas), con lo cual llevando un serio riesgo para los bebés que han sido modificados genéticamente. De este modo, cada avance científico tecnológico debe estar apropiadamente regulado por las sociedades a fin de evitar los potenciales efectos dañinos de dichos avances.
The belief that leadership qualities can be developed within the individual Marine, and that leaders have the responsibility for developing those qualities is the ________.
Answer: Marine Corps philosophy of leadership.
Explanation:
Some of the Marine Corps Leadership qualities include inspiring others, through patriotism, having good morals, technical proficiency etc.
The objective of the Marine Corps leadership is simply to enable the Marines possess leadership qualities which will be essential to the Marine Corps and also to the society at large.
someone answer pls...
16. The genetic variation that leads to evolution can occur when genes from
one population are introduced into the gene pool of a different population. This
process is known as
A.mutation
B. crossing over
C. natural selection
D. gene flow
Protons are made up of ____ up quarks and one down quark
7) Which star on the H-R diagram has a low surface temperature and the highest absolute brightness?
Explain how you arrived at that answer.
HURRY PLZZZ
The Hertzsprung-Russell diagram (commonly abbreviated as the H-R diagram) is a scatter plot of stars indicating the relationship between the absolute magnitudes or luminosities of the stars compared to their spectral ratings or effective temperatures. More simply, each star is plotted on the graph to measure its brightness compared to its temperature (color).
Hertzsprung-Russell diagram.
The diagram was created around 1910 by Ejnar Hertzsprung and Henry Norris Russell and represents an important step toward understanding stellar evolution or "the way stars go through sequences of radical and dynamic change over time."
It was made in 1905 by the astronomer Ejnar Hertzsprung and, independently, in 1913 by Henry Norris Russell. The Hertzsprung diagram showed the luminosity of stars as a function of their color, while the initial Russell diagram showed the luminosity as a function of spectral type. Both diagrams are equivalent.
why do you think slate might be denser then shale?
Answer:Slate is denser than shale because its atoms and molecules become more compact due to the presence of intense pressure. Due to this event, the minerals are squeezed and realigned in such a way that the axes are directed to where the pressure was applied.
Explanation:
What type of animal symmetry also includes the formation of a head? What is this process
called?
Answer:
your answer is bilateral symmetry
Explanation:
Bilateral symmetry involves the division of the animal through a sagittal plane, resulting in two mirror-image, right and left halves, such as those of a butterfly, crab, or human body. Animals with bilateral symmetry have a “head” and “tail” (anterior vs. posterior), front and back (dorsal vs. ventral),
Answer:
I hope tis helps.
Explanation:
Someone pls help, I’m in a time limit :(
How are humans impacting biodiversity in ecosystems around the world? Provide two examples to support your claim.
Answer:
as humans population continues to grow, we're cutting down more trees and occupying more lands to suffice the need of citizens, therefore, decreasing the forest biodiversity. Our plastic bags, as well as wastes, are polluting the ocean and eradicating essential species that are required to sustain a balance ecosystem, therefore, decreasing the biodiversity of the ocean that are required to maintain a balance environment.
Explanation:
brainliest plzzzz
name 2 types of reproduction
Answer:
asexual and sexual reproduction
Explanation:
Though asexual reproduction is faster and more energy efficient, sexual reproduction better promotes genetic diversity through new combinations of alleles during meiosis and fertilization.
What situation would most likely occur if horseshoe
crabs became extinct.
Sandpipers would also become extinct.
The population of laughing gulls would increase in South
America.
Sandpipers would no longer be able to migrate from South
America.
Laughing gulls would start feeding on blue crabs.
Answer: Sandpipers would no longer be able to migrate from South America.
Explanation:
If you examine two organisms that you hypothesize share common ancestors,
what evidence you might expect to find?
Answer:
Similarities in the DNA and genetic coding as well as possible physical features or behaviors
Question 5
Ben is boiling water to make pasta. He leaves his metal stirring spoon in the boiling water for a few minutes. What will most likely happen to
А The temperature of the metal spoon will increase because cold energy from the spoon will transfer to the water
B
The temperature of the metal spoon will decrease because heat energy from the spoon will transfer to the water
c
The temperature of the metal spoon will increase because heat energy from the boiling water will transfer to the spoon
D
The temperature of the metal spoon will decrease because cold energy from the boiling water will transfer to the spoon
Answer:
C
Explanation:
as heat from the water is passed to the spoon as it is made up of metal
It should be C the others aren't reasonable
Why might countries with large oil reserves be interested in controlling the price and supply of oil?
Answer:
Explanation:
To make more money and to have a better economy as a country together
Answer: They want to make sure that there is a steady supply at a reasonable price so they can use the oil that they need.
Explanation:
As a cartel, the OPEC+ member countries collectively agree on how much oil to produce, which directly impacts the ready supply of crude oil in the global market at any given time. OPEC+ subsequently exerts considerable influence over the global market price of oil and, understandably, tends to keep it relatively high in order to maximize profitability.
If OPEC+ countries are unsatisfied with the price of oil, it is in their interests to cut the supply of oil so prices rise. However, no individual country actually wants to reduce supply, as this would mean reduced revenues. Ideally, they want the price of oil to rise while they increase supply so that revenues also rise. But that is not market dynamics. A pledge by OPEC+ to cut supply causes an immediate spike in the price of oil. Over time, the price reverts back to a level, usually lower, when supply is not meaningfully cut or demand adjusts.
Conversely, OPEC+ can decide to boost supply. For instance, on June 22, 2018, the cartel met in Vienna and announced that they would be increasing supply.3 A big reason for this was to offset the extremely low output by fellow OPEC+ member Venezuela.
Saudi Arabia and Russia, two of the largest oil exporters in the world who both have the ability to increase production, are big proponents of increasing supply as that would increase their revenues. However, other nations, who cannot ramp up production, either because they are operating at full capacity or are otherwise not allowed to, would be opposed to this.
6. Your body's internal thermostat is regulated by
a. Negative feedback
b. Receptors in the skin and brain
C. positive feedback!
Answer:
B. Receptors in the skin and the brain.
Hope this helps!
Answer:
B) Receptors in the skin and brain
Explanation:
Your internal temp is from thermoreceptors in the skin that connect to the hypothalamus which releases a hormone to raise or lower your body temp depending on how warm or cold it is.
THIS IS TECHNICALLY FOOD SCIENCE
What is peristalsis? *
O the part of the digestive tract that connects the mouth and the stomach
O the rhythmic movement of muscles in the esophagus
O a special protein that helps a chemical reaction take place
O the anatomical part of the body that links the throat to the esophagus
the rhythmic movement of muscles in the esophagus
Which of the following are examples of lipids?
(10 points)
A. fats, oils, and waxes
B. Sugars and starches
C. glucose and cellulose
D. amino acids and enzymes
Answer:
A. fats , oil's , and waxes
Explanation:
Have a great day! ∩^·ω·^∩
I really need help like fast so ;-;
A single-celled organism is also called
Question 3 options:
unicellular
unocellular
bonocellular
multicellular
it's an unicellular organism (:
can someone help me for question 7???
Answer:
I think its 14
Explanation:
Hope this helps!
I need an answer ASAP due in 5 minutes
Which two statements describe what happens to energy during cellular
respiration?
O A. Some chemical energy is transformed into thermal energy:
OB. Some thermal energy is transformed into chemical energy.
C. Light energy is transferred
out life processes.
molecules of ATP and used to carry
D. Chemical energy is transferred to molecules of ATP and used to
carry out life processes.
SUBMIT
If eaten both the fish and predator will die? *
O shark
O puffer fish
O sting ray
O clownfish
Answer:
The shark wont die unless it is hurt very badly by the puffer fish. The puffer fish is able to kill all of the animals listed but the puffer fish wouldn't die if he uses his abilities. I would say the sting ray.
Explanation:
clownfish some fish eat other fish and predator eat fish
If the eyepiece has an inscription of 12.5x. What is the total magnification of the microscope when she observed it under low power objective?
Answer: 10X
Explanation:
To figure the total magnification of an image that you are viewing through the microscope is really quite simple. To get the total magnification take the power of the objective (4X, 10X, 40x) and multiply by the power of the eyepiece, usually 10X.
If the eyepiece has an inscription of 12.5x, then total magnification under low power could be 125x as the magnification under objective lens could be 10x.
What is the magnification of a microscope?
A simple microscope or magnifying glass can produce an image of the object. The object is focused upon by the microscope or the magnifying glass. There are simple magnifier lenses that are bi-convex, which means that they are thick at the center compared to at the periphery.
The intermediate plane of the image is normally located about 10 millimeters below the top of the body tube of the microscope. It is at a specific location. This location is within the fixed internal diaphragm of the eyepiece.
Between the back focal plane of the objective and the intermediate image, there is a distance which is termed the optical tube length. The value is different from the mechanical tube length of a microscope. It is the distance between the nosepiece, where the objective lens is attached, and the top portion of the observation tubes. Here the eyepiece lens is inserted.
Therefore, if the eyepiece has an inscription of 12.5x, then total magnification under low power could be 125x as the magnification under objective lens could be 10x.
Read more about magnification, here
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What is the “new” base found in RNA?
Answer:
RNA is a polymer with a ribose and phosphate backbone and four different bases: adenine, guanine, cytosine, and uracil. The first three are the same as those found in DNA, but in RNA thymine is replaced by uracil as the base complementary to adenine.
Explanation:
The main function of the digestive system is to break food down into molecules that can be absorbed by cells. How are the food molecules absorbed into the cells to start the cellular respiration process?
A.
Food molecules are broken down by oxidation and then released by cells.
B.
Food molecules are released into the cells by the respiration process.
C.
Food molecules are absorbed through the cell wall.
D.
Food molecules are absorbed through the cell membrane.
PLEASE HELP! FREE BRAINLIEST
The Answer is B.
Explanation:
At least thats what I learned in school
Why does a kitten look different than its parents?
A. Kitten gets half its traits from each parent, which creates diversity.
B. Kitten did not receive proper nutrition during development.
C. Kitten is not fully grown yet.
Answer:
A
Explanation:
I would need to see what picture or image they are talking about to see if it is the correct answer.