Louis Pasteur conducted an experiment to disprove the theory of spontaneous generation using a swan-necked flask.
The theory of spontaneous generation stated that life happens to originate from non-living matter. A lot of scientists were in support and also against the theory. Louis Pasteur conducted an experiment using the swan-necked flask to disprove this theory.
In his experiment, he took a swan-necked flask which was shaped like an "S" and in that flask he put a nutrition rich broth. After this, he boiled the broth in order to kill any microorganisms which were already present in the broth. The broth was exposed to the air left undisturbed.
He then observed that regardless for how long he let the broth sit, the dust particles and other things never made it to the broth and no growth of microorganisms was seen. This proved that the microorganisms do not arise out of non-living matter but are introduced through air.
To know more about microorganisms here
https://brainly.com/question/24224926
#SPJ4
Describe in detail the process of Natural Selection / Evolution.
Natural Selection is the process by which the most adapted, or fittest, species survive and the least adapted, or unfit, species do not survive. An example of Natural Selection is if there are two species of birds that eat the same thing, but one of the species has a beak that makes it harder to eat the food, naturally the species that has the beak fit to eat that food will survive. The species that is not fit to eat that food will either adapt or will be unable to survive. Evolution is a species adapting to the enviornment over a period of time. There is microevolution and macroevolution.
What two body systems interact to help you process these types of sensory input?
The human body's organ systems must work together to keep the body alive and functioning normally, which requires communication among systems. This communication is controlled by the autonomic nervous system and endocrine system.
i hate when people do the links
Data was collected concerning Galapagos bird beak size over time. There are several species finches, and they are also known as
Darwin's Finches. These finches share the same habits and characteristics except for one; they all have different shaped and sized
beaks. The differences in their beaks might be the most important aspect of their survival. Around 1977, there was a huge drop in
finches with small beaks while there was a great increase in large-beaked birds. How can you explain this?
A)
The small-beaked finches were prey for larger animals.
B)
The large-beaked birds preyed on the small-beaked birds.
Available food changed and the small beaked birds could not readily adapt.
D)
Competition for food favored large beaks; the small beaked birds died off.
The struggle among Darwin's Finches, which is especially fierce during dry spells due to food scarcity, benefits those who are most adapted to their environment, according to the best conclusion.
Different finches species have nutritional specializations that are characterized by variations in their beaks due to diverse ecological settings on the same island.
Additionally, it has been demonstrated that finches that live in highly planted zones have a distinct call than those that reside in less vegetated areas, expanding their spectrum of mating calls.
A couple that belongs to the same milieu (environment) is more likely to be discovered as a result of this event, and it is from that point that the stabilization of genetic traits unique to the ecological environment occurs.
With this information, we can conclude that competition, which is particularly severe in periods of drought due to food shortages, favors the individuals most adapted to their environment. Because they have a greater chance of survival and, therefore, of reproduction, their particular genetic characteristics tend to be passed on to subsequent generations.
To know more about Darwin's Finches click here:
https://brainly.com/question/21287566
#SPJ4
The average rate of primary production in the open ocean is 125 gC/m2/yr. In the most productive ecosystems such as algal beds and coral reefs, the average production is 2000 gC/m2/yr. How many years would it take to accumulate 2000 gC/m2 on the deep-sea floor in the open ocean
Higher chlorophyll fixations and overall higher efficiency are seen on the equator, along the coasts (particularly eastern edges), and in the high-scope sea.
Makers. Essential makers — including microscopic organisms, phytoplankton, and green growth — structure the most minimal trophic level, the foundation of the amphibian food web.
In spite of the fact that they possess under two percent of the seas, the beachfront upwelling regions in the eastern pieces of the Pacific and Atlantic Seas are among the organically most useful marine regions around the world.
The highest zone, from the ocean surface to a profundity of 200 m (656 ft), is known as the epipelagic or photic zone. A lot of accessible daylight makes this the most useful zone of the sea.
To learn more about Primary producers here
https://brainly.com/question/11173626
#SPJ4
What are the two factors responsible for genetic variation in animals?
Multiple factors can cause genetic variation within a species. Genetic diversity can come from various sources, one of which being mutations, or alterations in the DNA's gene sequences.
Gene flow, or the transfer of genes between several groups of organisms, is another source.
Genetic variation refers to the alteration in gene and gene frequencies. The causes of genetic variation in populations are as follows. Gene mutations, also known as point mutations, are modifications to a gene's chemical structure.
Genetic variety is the term used to describe variations in a population's genetic make-up. 2 Genetic diversity is required for natural selection to occur. 3 Mutations, gene flow, and sexual reproduction are three main sources of variety. 4 Genetic variety originates from DNA mutations that change which modifies the genes of people within a group.
To know more about genetic variation
https://brainly.com/question/15085018
#SPJ4
Help plzz^^^
1. predatory advantage
2. camouflage advantage
3. competitive advantage
4. reproductive advantage
no links
QUICK!!!! HELP!!!!
Why do we think that the Appalachian Mountains were taller than the Himalaya mountains are today? Make a Claim and use evidence and reasoning from the text to support your response.
Answer:
Millions of years ago, the Appalachians were taller than the Himalayas! Millions of years of erosion, however, have taken their toll. ... The crust that is now the Appalachians began folding over 300 million years ago, when the North American and African continental plates collided.
A desert biome gets two years of above average rainfall. As a result, there is more vegetation than normal. Which effect on the desert ecosystem is most likely?
Answer: herbivores will most likely thrive in this environment.
Please help!!!! Use what you have learned to match the parts of sentences
The part of the earth with respect to its structure and functions are matched below:
The part that includes land and water ---- is called the crust. The crust ---- is the outermost layer. The mantle ---- is under the crust. The core ---- is both solid and molten. What is Earth?Earth may be defined as a planet where life is known to exist with proper conditions and requirements. It is a huge area of land where diverse organisms live.
Therefore, the matching is well mentioned above.
To learn more about the parts of the earth, refer to the link:
https://brainly.com/question/26440280
#SPJ1
Answer:
look at the image below
Explanation:
HELP FAST PLZ TAKJNG A TEST !!!!!! Will give Brainly and 30 points !!
Answer: smog
Explanation:
Answer:
I believe the answer is B. Smog
Explanation:
Photosynthesis and cellular respiration are both complementary and relatively balanced, but early history of life on Earth showed increasing oxygen concentrations. This indicates that Group of answer choices both photosynthesis and respiration were occurring at approximately the same levels. neither photosynthesis nor respiration were occurring. the amount of cellular respiration occurring exceeded the amount of photosynthesis. the amount of photosynthesis occurring exceeded the amount of cellular respiration.
Answers:
This indicates that Group of answer choices both photosynthesis and respiration were occurring at approximately the same levels
Explanation:
This is because for oxygen to be abundance more carbondioxide I'd released and photosynthesis take place more.
In, photosynthesis carbondioxide is used with water in the presence of light energy and chlorophyll to produce glucose and oxygen. Oxygen us produced and this oxygen is used in cellular respiration to give out carbondioxide as by product.
Which genetically modified organism will best prevent farmers from losing their crops during transport to grocery stores?
oranges that have a prolonged shelf life
corn with a high yield
butter squash that have high nutritional value
fruit with a vaccine
(ANSWER IS A, I saw nobody with the question and i got the answer correct)
EDGE 2021
Answer:
a
Explanation:
Answer:
A
Explanation:
What is the same and what is different about the transcription of a prokaryote vs. a eukaryotic gene
Due to the lack of a distinct nucleus, prokaryotic gene expression (both transcription and translation) occurs inside the cytoplasm of a cell; hence, the DNA is freely positioned within the cytoplasm.
Gene expression in Eukaryotes happens in both the nucleus (transcription) and the cytoplasm (translation).
Eukaryotic transcription occurs within the nucleus, whereas Prokaryotic transcription occurs in the cytoplasm. Transcriptional factors are proteins that are required in Eukaryotic Transcription but not in Prokaryotic Transcription.
Prokaryotic and Eukaryotic Transcription Have Similarities. The RNA serves as a template for synthesis in both types of transcriptions. In both transcriptions, one strand of DNA duplex serves as the template. Prokaryotic and Eukaryotic transcriptions both generate RNA molecules.
Learn more about to prokaryotic
https://brainly.com/question/29119623
#SPJ4
A student placed a rock in a graduated cylinder containing water causing the water level in the cylinder to increase by 20 mL. This increase represents the rocks
This growth corresponds to the volume of the rocks. According to the displacement caused by the boulder, the water in the grade cylinder rises.
What features does water have?Water molecules have a twisted, polar shape with partial p-sides on the hydrogen atoms and partial electrostatic force on the oxygen atoms. This is due to oxygen's greater electronegative nature, which draws electrons more potently than hydrogen does. Water is a fantastic solvent.
Why are the water so important?A water molecule is consisting of two hydrogen bonds bound to a carbon atom and has a bend overall structure. This is due to the fact that in addition to bonding with both hydrogen bond, the oxygen molecule also carries 2 sets of lone electrons. maintain the same temperature.
To know more about water visit:
https://brainly.com/question/6870886
#SPJ1
Can someone help me?
What is water used for in space?
As Virginia becomes more more populated construction of new homes has destroyed much of a force this has cause rivers and streams near construction sites to be filled with silt and sediment what kind of water pollution is this
Answer:
The correct answer is - water pollution.
Explanation:
In the US, water pollution is one of the most serious ecological problems, and sedimentation by filled with dirt, slit caused by development sites or construction sites. It is caused in the name of developing cities and states for new homes and other construction that is nothing but careless development that is causing water pollution in these areas including the Virginia.
The excessive silt has covered the spawning beds of fish causes spawning of the habitat. The dirt and slit and sediments cause inhibiting light to aquatic plants that result in less oxygen and food for aqautic life.
Color blindness is a recessive X-linked trait in humans. In a family where the mother is color-blind and the father is normal, the probability of their having a color-blind son is
If the mother is color blind and the father is normal, the chance that their son will be color blind is ¼ or 25%.
The color-blind mother's genotype is XXc and the normal father's genotype is XY, so the offspring are:
Parents: XXc >< XY
Gametes: X , Xc >< X , Y
Generation:
XX (normal female)
XY (normal male)
XXc (carrier female)
XcY (color-blind male)
The phenotypic ratio is:
¼ (normal female)
¼ (normal male)
¼ (carrier female)
¼ (color-blind males)
Learn more about color-blind cross at https://brainly.com/question/29511697
#SPJ4
1. A fossil is the remains or traces of organisms that have lived in the past. Which statement is true
about fossils?
A. A fossil never includes a complete organism.
B. A fossil shows the evolution of an entire species.
C. Much of the evidence for evolution comes from fossils.
D. Fossils have provided a complete history of Earth's life forms.
2. In 1859, Charles Darwin proposed his theory of evolution based on natural selection. What
observation about the natural world does this theory explain?
A. how the fossil record was formed
B. how species change over time
C. how a species always retains its characteristics
D. how catastrophic events lead to extinctions
3. Extinction is the dying out of a species. What can lead to the extinction of a species if the
environment changes?
A .having traits that enable the species to adapt to the changed environment
B. an increase in the reproductive rate within the species
C. a lack of adaptations in the species that help individuals survive and reproduce in the changed
environment
D. the presence of genetic variations among the individuals of the species
What weather phenomena are you likely to see in California during El Niño. These phenomena result from changes in temperature and humidity values under the influence of El Niño. CHOOSE 3
DROUGHT RAIN
FLOODS T ORNADO
FOG HURRICANE
El Niño is a meteorological event that affects clime at a global level, altering natural regimens. In California, El Niño can cause RAIN, FLOODS and HURRICANE.
What is El Niño?The El Nino Southern Oscillation -ENSO- is a weather phenomenon produced due to a complex system of climatic oscillations between the ocean and the atmosphere.
ENSO phenomenon is dominant in the global climate system. In the Nothern Hemisphere, ENSO provokes changes in general extratropical circulation, contributing to some different situations in weather during winter, including severe precipitations and cooler temperatures in the southeast USA, north of Mexico, Gulf of Mexico, Strait of Florida, and western Cuba.
In California, El Niño can cause RAIN, FLOODS and HURRICANE.
You can learn more about El Niño event -ENSO- at
https://brainly.com/question/2732405
https://brainly.com/question/14099667
#SPJ1
Suppose there are two homologous chromosomes. Each chromosome contains a single mutant allele in different parts of the chromosome. How can crossovers be beneficial in this situation
Answer:
Crossovers can be used in this situation to take the two mutated alleles and combined them which would create a normal allele.
Why do great white sharks travel over long distances?
Answer: they travel far cus they have to eat new food to eat when the water temperature gotta be cool
Explanation:
How do sexually reproducing organisms inherit their DNA?*
Half comes from one parent and half comes from the other parent
All of it comes from one parent
None of it comes from either parent
O About 75 percent comes from one parent, and about 25 percent from the other parent
Answer: Half comes from one parent and half comes from the other parent.
Explanation: You have 46 chromosomes and you get 23 from each parent.
PLEASE IM GONNA FAIL WILL GIVE BRAINLESS IM SO TIRED
In a flower, red is dominant to white. If two
white flowers are crossed, what are the
chances that any of the offspring will be red?
Answer:
The crossing of a red flowered plant and a white flowered plant produces all the offspring with pink flowers. This cross illustrates red and white exhibit incomplete dominance. This situation occurs due to the blending of both the alleles
Explanation:
CORRECT ME IF I AM WRONG
Darwin observed how farmers and breeders produced many kinds of farm animals and plants. These plants and animals had traits that were desired by the farmers and breeders. He also noticed how the study of similar body structures and vestigial organs could add to the evidence of evolution. After performing several breeding experiments, he came to certain conclusions and formulated some theories. His theory of evolution and natural selection is the most accepted one.
What is the reason behind the acceptance of Darwin's theory?
Responses
A It is based on the practical example of Lamarck’s theoryIt is based on the practical example of Lamarck’s theory
B It is supported by its harmonizing with other views.It is supported by its harmonizing with other views.
C It is based on the ideas of earlier hypothesis and laws.It is based on the ideas of earlier hypothesis and laws.
D It is supported by practical evidence and examples.It is supported by practical evidence and examples.
The reason behind the acceptance of Darwin's theory is based on D It is supported by practical evidence and examples which help to shape a scientific theory such as in this case.
Why is important the presence of evidence to formulate a scientific theory?The presence of evidence is key to formulating a scientific theory because all theories in sciences are based on the repetitive observation of empirical data that can be used to make predictions and thus tested i.e., confirmed or rejected by experimental or observational procedures such as in the case of the evolutionary theory proposed by Charles Darwin to explain the origin of species.
Therefore, with this data, we can see that the presence of evidence is fundamental in order to formulate a scientific theory since this info allow us to understand a given observation of the natural world and also allow us to make predictions.
Learn more about scientific evidence here:
https://brainly.com/question/14516590
#SPJ1
Which beaker will have a net movement of water from the cell to the surrounding solution
Osmosis is the process by which water molecules pass across a cell's partly permeable membrane from a solution with a high concentration of water molecules to one with a lower concentration.
There will be a net transfer of water from the cell to the surrounding solution in a beaker with a hypertonic solution in respect to the cell (also known as osmosis). This is the case because water will flow from a region of lower solute concentration to an area of greater solute concentration in order to balance the solution concentration since osmosis the concentration of solutes in the cell is higher than that in the surrounding solution.
learn more about solution here:
https://brainly.com/question/9101572
#SPJ4
a cross between ss and Ss will generate _____ % normal hemoglobin, _____% sickle cell trait, and _____% sickle cell anemia.
A cross between ss and Ss will generate 0 % normal hemoglobin, 50 % sickle cell trait, and 50 % sickle cell anemia.
People with sickle cell trait deliver handiest one replica of the altered hemoglobin gene and seldom have any medical signs and symptoms associated with the sickness. In contrast, humans with sickle cell sickness deliver copies of the altered hemoglobin gene. Hemoglobin S trait, additionally cell as sickle cell trait, approach that your infant has inherited one gene for the same old hemoglobin (A) from one discern and one gene for hemoglobin S from the alternative discern. motive any fitness problems. Your infant will now no longer want any remedy or remedy for S trait.
A cross between ss and Ss will generate 0 % normal hemoglobin, 50 % sickle cell trait, and 50 % sickle cell anemia.
To learn more about sickle cell trait check the link below:
https://brainly.com/question/17063471
#SPJ4
Compared to the internal salinity of a fish in the ocean, the surrounding seawater would be considered:
The internal salinity of a fish in the ocean is much lower than that of the surrounding seawater. Generally, the internal salinity of a fish's body is about half to two-thirds of the surrounding seawater.
This is because a fish needs to maintain a balance between the salt and water concentrations inside their body in order to survive. The internal salinity of a fish must remain lower than the surrounding seawater in order for it to remain hydrated. This is done through a process called osmoregulation, whereby a fish is able to take in water while expelling salt.
The salinity of the surrounding seawater is determined by many factors, including the amount of dissolved salts, the temperature, and the amount of rainfall in the area. The salinity of the seawater can also be affected by ocean currents and the proximity to land masses.
Generally, the salinity of the ocean varies depending on the location and is typically between 3.5 and 4.5 parts per thousand. Therefore, when compared to the internal salinity of a fish in the ocean, the surrounding seawater would be considered much higher.
To learn more about salinity visit:
https://brainly.com/question/5082030
#SPJ4
There is growing evidence that mitochondrial Complexes I, II, III, and IV are part of a larger supercomplex. What might be the advantage of having all four complexes within a supercomplex
A supercomplex containing all four complexes may provide several advantages, such as increased efficiency in the electron transport chain.
By having all four complexes within the supercomplex, electrons can be transferred more quickly and efficiently throughout the chain. In addition, the supercomplex may help protect the proteins of the individual complexes against damage and denaturation.
The supercomplex may also allow the complexes to interact more cooperatively, allowing them to better coordinate the transfer of electrons throughout the chain.
Furthermore, having the complexes in a supercomplex allows them to be closer together and more accessible, which may help increase the rate of ATP production. Ultimately, having the four complexes in a supercomplex may result in greater efficiency of the electron transport chain, increased ATP production, and better protection of the proteins.
To learn more about ATP production visit:
https://brainly.com/question/9425355
#SPJ4