what are the problems and the challenges in classifying living things​

Answer: Option E -- RNA Editing

Explanation:

It should be noted that, RNA editing can be defined as a molecular process via which some cells can make discrete changes to specific nucleotide sequences within an mRNA molecule after it has been generated by RNA polymerase. In addition, we have two major types of RNA editing with 1 being a C-to-U change catalyzed by cytidine deaminase that deaminates a cytidine base into a uridine base, e.g C-to-U editing is with the apolipoprotein B gene in humans. ApoB-100 is expressed in the liver and apoB-48 is expressed in the intestines. The B-100 form comprises of a CAA sequence that is edited to UAA, a stop codon, in the intestines.

Answer:

The type of protein synthesized for each case of transcriptional control is given below:

a. Negative control in a repressible operon

Inactive repressor

b. Positive control in a repressible operon

Active activator

c. Negative control in an inducible operon

Active repressor

d. Positive control in an inducible operon

Inactive activator

Explanation:

Different types of operons exist in different bacterial systems and they control the transcription of genes by means of regulator proteins. These proteins are responsible for turning on or off the gene encoding a particuar protein depending on whether or not the cell requires for it.

Answer:

The correct answer is option : d. evolution.

Explanation:

Change in the heritable traits or characteristics of population of a organism over time by the adaption or changes in genes of such population over successive generation is known as the evolution.

These changes that cause the evolution of the biological population is caused by the process of adaption through natural selection that is the ability of the passing beneficial genes from parent to offspring.

Thus, the correct answer is option D. evolution.

Answer:

a. New ideas often develop from unsuccessful experimentation.

Explanation:

The scientists' work would still be considered a success because new ideas often develop from unsuccessful experimentation. Many of today's famous inventions and celebrities failed at the start of their career. However, because they did not give up on their goal, they eventually succeeded. A few examples of those people are Bill Gates, Albert Einstein, and Michael Jordan.

Here is an influential quote, said by Michael Jordan, that I think accurately supports this topic of discussion:

"I've missed more than 9,000 shots in my career. I've lost almost 300 games. 26 times, I've been trusted to take the game-winning shot and missed. I've failed over and over and over again in my life. And that is why I succeed."

A scientist has been working for 15 years to develop a new type of plastic material but she has not been successful. Her work is still a success because new ideas often develop from unsuccessful experimentation.

There are various principles that need to be followed when scientific research is being carried out. Methods of self-regulation and authority regulation are both extremely important for conducting scientific research.

They both need to be followed as no one is sufficient without another. The basic principle for scientific working which is required to be followed by all scientists is respect for the work, the integrity of the knowledge, honesty about the data and openness about their mistakes.

Scientific principles are required to be followed in every stage of scientific research, right from the formation of a hypothesis to the publishing of results.

Therefore, even if research is not giving any results it is successful new ideas develop from unsuccessful experimentation.

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The correct answer is Phosphorus I just took the test.

Answer:

questions:

Should I or can I eat salty foods?

Do I have to check my pressure immediately?

Do I have to follow a balanced diet?

Is it good to do physical activity?

Do I have to worry about the signs of eye flickering and headache?

Explanation:

Blood pressure is regulated by endogenous mechanisms, although these sometimes fail and it is necessary to take drugs to reduce high blood pressure, an example of which is beta-blockers.

Blood pressure is also regulated by diets based on low sodium consumption, necessary calories and with great contributions of nutrients since cardiac or cardiovascular health is also essential in the face of possible formation of atheroma plaques.

The increase in blood pressure with the appearance of atheroma plaques is very common, and it is also the two most frequent causes of AMI (acute myocardial infarction)

Answer:

1)How much does blood pressure rise because of stress?

2)Are there techniques that I can use to cope with stress?

3)Do these techniques help to reduce blood pressure?

4)Is exercise helpful in reducing blood pressure caused by stress?

5)Would medication help my condition?

6)Are there any other risk factors for high blood pressure?

Explanation:

Answer from plato.

Answer:

here

Explanation:

CaCO3 + H2SO4

-----> CaSO4 + H2O + CO2

Answer:

The answer is

Explanation:

The particle is a virus because it has genetic information and can infect humans.

Hope this helps....

Have a nice day!!!!

Answer:

A

Explanation:

mitrochondrial Proton FOF1 ATPase / ATP synthase synthesis ATB during oxidative phosphorylation. In this study, we examined of effects of several groups of polyphenolic photochemicals on the activity of the enzyme

Answer:

ATP sinus is enzyme that creates the energy storage molecules adenosine triphosphate ADP and inorganic phosphate the overall reaction catalysed by ATP synthesis is

ADP+Pi+3H+out =ATP+H2O+3H+in

Answer:

Natural selection

Explanation:

According to  Darwin's theory, natural selection is the process by which individuals better adapted to their environments have more chances to survive and reproduce, and thereby their descendants will be better represented in the next generation. This mechanism exploits the existence of natural variation among members in the population which is used to select those individuals that are better adapted (i.e., with a higher adaptive fitness) for their environments. Natural selection is a key mechanism of evolution by which species change across time.

Answer: Lymphatic system

Explanation:

Not respiratory and excretory for sure.

Not nervous because the diagram doesn't show spinal nerves clearly. So its lymphatic system.

:-)

Answer:

In other words, physical or chemical parts of the environment that affect the organisms that are in that environment.

Explanation:

For aquatic ecosystems, these factors include light levels, water flow rate, temperature, dissolved oxygen, acidity (pH), salinity and depth. Light level is an important factor in aquatic ecosystems. hope this helps you :) god loves you :)

Light level is an important factor in aquatic ecosystems.

The physical or chemical parts of the environment that affect the organisms that are in that environment.

An aquatic ecosystem is a water-based environment. Abiotic factors are the non-living components that form the environment in which organisms subsist in a current.

The main abiotic factors in the marine environment are as; light, temperature, salinity, and hydrostatic pressure. dissolved oxygen, acidity (pH), salinity and depth.

Here Without pollution or acid rain, most lakes and streams would have a pH level of around 6.5.

Therefore Light level is an important factor in aquatic ecosystems.

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Answer: Option C.

slight fluctuations that are kept within a narrow range.

Explanation:

An invertebrate that lives in an estuary where salinity varies cyclically with the tides. If this individual is able to adjust the salt concentration of its body fluids, its salt concentration will have slight fluctuations that are kept within a narrow range so has to maintain homeostasis and prevent the cells of the the invertebrate from not shrinking which can be due to the salt solution (Hypertonic).

Estuary is an area of water or shorelines where river meet the ocean. It normal do have concentration of salts. Organisms that live in estuaries must be able to adapt to their dynamic environments, wich is due to variations in water chemistry includes salinity, as well as physical changes like the rise and fall of tides.

Answer:

Objective Lens Magnification = ×100

Explanation:

In a microscope, the ocular (eyepiece) lenses are usually to a magnification of ×10, meaning that it magnifies the image 10 times. While the standard objective lenses have magnifications of ×4, ×10, ×40, and ×100.

In order to work out the total magnification, the individual magnifications of the ocular and objective lenses have to be known, after which a simple multiplication of both magnifications will give the total magnification used.

Total Magnification = (eyepiece lens magnification) × (objective lens magnification)

1000 = 10 × obejcetive lens magnification

Dividing both sides by 10

Objective lens magnification = 1000 ÷ 10 = 10

∴ Objective lens magnification = ×100

Answer:

liquid waste , solid waste,harzadious waste,recyclable rubbish and organic waste

Answer:

. when a living plant cell loses water by osmosis , there is a contradiction or shrinkage of the components of the cell away from the cell wall . This phenomenon is known as plasmolysis . for example :- red blood cells shrink when placed in a salt solution .

Explanation:

this is an easy answer give me brainliest

Answer:

Photosynthesis

Explanation:



Answer:

For the production of food for animals.

Explanation:

365,000 acres of land were needed for the production of feed for animals in order to produce beef. Feed such as grasses, berseem, shaftal and maize etc are given to animals because these plants has high protein content which is necessary for the production of meat in animals. If proper feed is not provided to animals so they becomes weak and low in meat which will not fulfill the beef need of a country so proper feed is necessary for the production of high amount of beef.

Answer:

O mRNA is made in small quantities in infrequent batches.

Explanation:

mRNA is made in small quantities in infrequent batches because the affinity of positive transcription is lower and affinity of negative transcription is higher which is responsible for production of mRNA from DNA molecule. Transcription is a process in which the information that is present in DNA molecule is copied to new mRNA molecule. Positive transcription factor is a promoter which promotes the initiation of transcription in order to enable RNA polymerase while negative transcription  factor is a repressor protein.

A Community is composed of a population of a species plus populations of other species. Thus, the correct option is A.

A Population may be defined as a group of individuals belonging to the same species living in the same area at a given time. Some demographic characteristics of a population are size, density, birth rate, death rate, population dispersal, etc.

A community may be defined as a group of individuals belonging to different species living in the same area at a given time.

An ecosystem may be defined as a place or area where individuals of different species along with abiotic factors live together and interact with one another for the purpose of food, shelter, and space.

The Abiotic community deals with the existence of abiotic factors like temperature, rainfall, fire, winds, mountains, hills, etc.

Therefore, a Community is composed of a population of a species plus populations of other species. Thus, the correct option is A.

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Answer:

Skeletal muscle cells are long, cylindrical, multi-nucleated and striated. Each nucleus regulates the metabolic requirements of the sarcoplasm around it. Skeletal muscle cells have high energy requirements, so they contain many mitochondria in order to generate sufficient ATP.

The options are missing from the question,below are the missing options;

a. Trophic cascade

b. Primary succession

c. Autograph

d. Eutrophication

e. Pioneer community

The correct answer to the question is option A.

TROPHIC CASCADE.

Trophic Cascade occurs when there is a series of significant difference/changes in the population size of organisms in the tropic level of an ecosystem.this change in trophic level occurs in a food chain and as a result of predators being in high trophic levels, they use the opportunity to indirectly promote the population of the organisms in the low trophic levels,they do so by ensuring that species that are at intermediate trophic levels are are in close watch or check.

This corresponds with the viral video of of how wolves change rivers featuring

the reintroductionn of wolves to Yellowstone after a 70 year absence which led to multiple changes in the biodiversity and ecology of the park.

Answer:

c.

Explanation:

Breed Polar bears in captivity , and then release them in the colder areas.

The colder the area the less of a chance there would be for the ice to melt fast enough sweeping away the bears shelter.

Climate change is the long-term alteration in weather patterns. It impacts the polar bears of the arctic region that can be saved by breeding them in captivity and then releasing them into their natural habitat.

Climate change is the pattern of the disturbance in the weather and the temperature condition of the earth and its various places. It is a result of increased global warming caused by pollution.

Climate change affects the oceans and sea by raising their temperature leading to the melting of the ice caps and glaciers. This results in habitat destruction and decreases the population of arctic animals like polar bears.

To increase the population of polar bears, humans can breed them in an artificial environment and then can release them into their natural habitat like the colder places.

Therefore, the population can be increased by breeding.

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Hello There!

Answer :

Hope this helps!

Have a nice Day!:)

Answer: If the pons of the brain is damaged , it may cause a major interruption, loss of muscle control and function except for the eye movement in the body.

Explanation: no wander

Answer:

A. Glucose is only partially broken down.

Explanation:

Glucose can only be partially broken down in the absence of oxygen, and the byproducts of anaerobic vs aerobic lead to different amounts of energy.

Answer:

b. dilation of the afferent arterioles and inhibition of renin release.

Explanation:

Atrial Natiuretic Peptide is a hormone which is mainly made and secreted in the atria. It helps in the regulation of blood pressure levels with the use of the kidney through an increase in water and sodium excretion.

The hormone helps in the regulation of blood pressure by ensuring there are dilation of the afferent arterioles to give room for increased flow of blood due to the increased pressure. Study also shows that the enzyme inhibits the release of renin.

Answer:

Explanation:

The plants grown in my place are -  rice, groundnut, sugarcane, grapes, mulberry, castor, ragi etc.

Parts of it used as food

rice - seed

groundnut - seed

sugarcane - stem

grape - fruit

Mulberry - fruit

Castor - seed

ragi - filler millet

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Answer:

If we do not reduce our carbon emissions and instead allow global temperatures to rise by 4.5˚C, up to half the animals and plants in some of the world’s most biodiverse areas could go extinct by 2100, according to a new study. In fact, even if we are able to limit global warming to the Paris climate agreement goal of 2˚ C, areas such as the Amazon and the Galapagos could still lose one quarter of their species, say the researchers, who studied the effects of climate change on 80,000 plants and animals in 35 areas. Another study found that local extinctions (when a species goes extinct in a particular area, but still exists elsewhere) are already occurring in 47 percent of the 976 species studied, in every kind of habitat and climatic zone.

With temperatures rising, precipitation patterns changing, and the weather getting less predictable and more extreme, a 2016 study determined that climate change is already significantly disrupting organisms and ecosystems on land and in water. Animals are not only shifting their range and altering the timing of key life stages— they are also exhibiting differences in their sex ratios, tolerance to heat, and in their bodies. Some of these changes may help a species adapt, while others could speed its demise.

Move, Adapt or Die

Animals can react to climate change in only three ways: They can move, adapt or die.

According to climate change If carbon emission can't reduced and instead allow global temperatures to rise by 4.5˚C, up to half the animals and plants in some of the world’s most biodiverse areas could go extinct by 2100.

Climate change refers to long-term shifts in temperatures and weather patterns. These shifts may be natural, but since the 1800s, human activities have been the main driver of climate change, primarily due to the burning of fossil fuels (like coal, oil, and gas) which produces heat-trapping gases.

More frequent and intense drought, storms, heat waves, rising sea levels, melting glaciers and warming oceans can directly harm animals, destroy the places they live, and wreak havoc on people's livelihoods and communities.

The potential future effects of global climate change include more frequent wildfires, longer periods of drought in some regions, and an increase in the duration and intensity of tropical storms.

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Answer:

The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.

Explanation:

Mutation is a process that occurs from time to time to the genetic material of living cells. Mutation is a change in the nucleotide sequence of a DNA or gene. It is usually caused by errors during replication or induced by an external substance called MUTAGEN.

A mutagen is any substance that causes mutation in an organism. Hence, according to the question, the chemical substance which is thought to be a mutagen will change the cells after being exposed to the chemical, and this change is passed to the next generation of cells.

N.B: Since mutation affects the gene, it is passed on to the offsprings during reproduction.

Answer:

its c did the test

Explanation:

Answer:

lithosphere, atmosphere and hydrosphere.

Explanation:

Answer:

the hydrosphere

the atmosphere

the lithosphere

Explanation:

The hydrosphere is all waters on the Earth's surface, such as lakes and seas, and sometimes including water over the Earth's surface, such as clouds.

The atmosphere is the Earth's layer of gases, commonly known as air, that is retained by Earth's gravity.

The lithosphere is the rigid part of the earth, consisting of the crust and upper mantle.