Regulatory functions such as feedback loops are very common in nature and happen thousands of times every day within our bodies alone.
A feedback loop is one of the methods by which biological organisms regulate functions. Feedback loops are a self-regulatory means through which the output of a system is then used as the input. Feedback loops can be of two types:
Positive FeedbackNegative FeedbackA positive feedback loop is one in which the system is stimulated to increase the production of a product. For example, the low levels of an enzyme in the blood will cause the body to produce more of that enzyme in a positive feedback loop. A negative feedback loop is just the opposite, in which high levels will cause a decrease in production.
Feedback loops are a vital part of maintaining homeostasis and for the survival of all organisms. Therefore, we can conclude that option D is correct in stating that feedback loops are common in nature and make the system stable.
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What foods contain saturated fats in general?
Answer:
cheese,bacon,sausages,biscuits,cakes.
Answer: Triple bacon cheeseburger
Explanation:
Which of these statements about the theory of evolution are correct
Answer:
the correct ones:
1. Organisms have changed over time and could continue to change in the future
2. Darwin's theory of evolution was influenced by ideas from others
4. Organisms evolved through natural selection.
the false one:
3. The theory states that organisms will remain the same throughout the history of Earth
Use the graph below to determine the range of values in which the LD50 of this pollutant lies. Dose-response curve shows twenty percent of the population died when exposed to thirty-eight milligrams of pollutant A per kilogram of water. Forty percent of the population died when exposed to forty-two milligrams of pollutant A per kilogram of water. Sixty percent of the population died when exposed to fifty-five milligrams of pollutant A per kilogram of water. Eighty percent of the population died when exposed to sixty milligrams of pollutant A per kilogram of water. One hundred percent of the population died when exposed to one hundred milligrams of pollutant A per kilogram of water.
Between 0 and 20 mg/kg
Between 20 and 40 mg/kg
Between 40 and 60 mg/kg
Between 60 and 80 mg/kg
Answer:
The answer is C, Between 40 and 60 mg/kg
Explanation:
I just took the test and it was right :)
baby jamison was born with . this is a genetic disorder in which the lungs are clogged with large quantities of abnormally thick mucus.
How does the biodiversity in a food chain compare to the biodiversity of a food web?
Answer:
ExpWhat is Biodiversity?
Biodiversity and food webs
Biodiversity is referred to as the web of life because many microorganisms, plants and animals interact with each other. The relationship among species is an important part of biodiversity.
A food chain is a sequence of who eats whom. The usual order of a food chain is sunlight, plants, herbivore, omnivore and/or carnivore. In one type of farming food chain, green grass and wildflowers use sunlight to grow in a field maintained by a farmer called a pasture. A Billy (boy) or Granny (girl) goat grazes on these delicious plants in the pasture. A goat or any other plant-eating animal is called an herbivore. Animals that rely on the farmer for food and protection are domesticated. In turn, the goat provides milk, meat and wool for the farmer, his family, and others. Humans are omnivores, as they eat plants and animals. The goat also provides fertilizer. Microorganisms decompose the goats’ poop or excrements, which provides fertilizers for the grass and flowers to grow. This is one example of a simple food chain based only on green plants, goats, microorganisms and humans. Millions of food chains exist around the world. Food Chain
Food chains that are related in an ecosystem form a food web. In forest ecosystems, many types of herbivores eat the trees and other plant life. Carnivores, or meat-eating animals such as tigers, lions, and wolves, prey on herbivores. They usually prey on wild animals. Sometimes, if the habitats or homes of carnivores are destroyed, they may also attack goats, sheep or cows for food. For example, in India, farmers may lose their goats to tigers; in Eastern Africa, cows may provide lunch for lions and in Western Canada, wolves sometimes attack the domesticated sheep. Carnivores are an important part of biodiversity because they regulate herbivore populations so that they do not eat their favorite plant species to extinction.lanation:
5. The human immune system is a complex network of cells and organs that evolved
to fight off infectious pathogens. Vaccines teach the immune system by mimicking
a natural infection. The influenza vaccine, contains a weakened form of the virus
that doesn't cause severe disease or reproduce very well. Human white blood cells
(WBC's ) can't tell that the vaccine viruses are weakened, so they kill the viruses.
Antibody levels start to decline over time and the influenza virus evolves very
rapidly. Why does and individual need to get a yearly flu vaccine?
Answer:
the flu virus mutates to different form so updating the vaccine is helpful
Explanation:
1. Write true or false for the following statements. Also rewrite the false statements correctly
A) Stomata in the leaves open and close with the help of guard cells
Answer:
TrueExplanation:
Make me as brain liest
the abnormal protrusion of a heart valve is known as
Answer:
Aneurysm
Explanation:
An aneurysm is a sac-like protrusion from a blood vessel or the heart, resulting from a weakening of the vessel wall or heart muscle.
Hope this helps! :)))
Nucleic acids are the organic compounds that control the making of _____ and contain the ______ to pass to the next generation.
Answer:
making of proteins
genetic material to pass to the next generation
Nucleic acids are the organic compounds, which control the making of proteins and contain the genetic material to pass to the next generation.
• The two prime kinds of nucleic acids are ribonucleic acid or RNA and deoxyribonucleic acid or DNA.
• The genetic material found in all the living species is the DNA, which is found in the nucleus of eukaryotes and is found in free-floating form in the cytoplasm in prokaryotes.
• This genetic material is passed on from generation to generation.
• The other kind of nucleic acid is RNA, which is mainly involved in the synthesis of proteins. The types of RNA, that is, tRNA, mRNA and rRNA takes place in the synthesis of protein and its regulation.
Thus, the given blanks can be filled with proteins and genetic material.
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Pensamiento que tenga que ver con la ciencia
1. A change in an organism's surroundings that causes it to react is called
Answer:
I believe that's adaptation
Explanation:
I might be wrong
Look at the picture of different food groups. Which two groups are mainly eaten for their energy? Add up the numbers and give the answer. For example, if you think it is 4 and 3, you would write 7, because 4 + 3 = 7.
Answer:
fat and carbohydrate
Explanation:
thats the food group
Help plssssssssssssssssssssss
please solve fast in 5 min
Answer:
(C)
Explanation:
answer"A" can be cancelled as prokaryotic cells don't possess a nucleus.
answer"B" can be cancelled as animal cells don't have cell walls.
answer"D" can be cancelled if you know the cell theory.
A certain sugar has no change in color when tested with Benedict’s solution. Can you tell what type of sugar it is? Explain.
Answer:
a certain sugar has no change in color when tested with benedict solution. can you tell which saccharide it is? no because it could be poly or disaccharide. what is the chemical formula for a polysaccharide molecule that contains 4 glucose molecules?
Sucrose
Sucrose (table sugar) contains two sugars (fructose and glucose) joined by their glycosidic bond in such a way as to prevent the glucose undergoing isomerization to an aldehyde, or fructose to alpha-hydroxy-ketone form. Sucrose is thus a non-reducing sugar which does not react with Benedict's reagent.
Explanation:
Sugars which give no color in Benedicts test are non-reducing sugars. Sucrose, a non reducing sugar does not undergo a color change in Benedict's test.
What is Benedict's solution?Benedict's solution is a chemical reagent containing copper sulphate pentahydrate and mixtures of sodium carbonate and sodium citrate. It is used to test the presence of reducing sugars.
A positive Benedicts test gives color change of blue to brick red precipitate whereas, non-reducing sugars does not give a positive result.
Sucrose contain fructose and glucose, they do not reduces the copper ion in Benedict's solution because there are no free aldehydes or ketones in sucrose.
Thus, sucrose does not reduce and will not give a color change in Benedict's test.
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Which type of interspecific interaction could best be described as a “win-win” interaction?
parasitism
commensalism
predation
competition
mutualism
Answer:The question describes a mutualistic relationship in which both the bee and the flower benefit. Mutualistic relationships can be described as win-win interactions between species.
Explanation:
50 POINTS
Organisms that convert solar energy into usable chemical energy are known as? (B.12C) Question 8 options: Autotroph Heterotroph Omnivore Herbivore
Answer:
Autotrophs
Explanation:
Ex. Plants (Autotrophs) gain energy from the sun and turn it into and produce oxygen (Chemical energy)
Answer: Autotroph
Explanation: Because I did the test:)
there are many contributors to malnutrition and hunger; however, one factor stands out among all others. what is the primary cause of malnutrition?
Irrespective of the fact that hunger and malnutrition has many contributors, one of the leading factors that is regarded as the primary cause of malnutrition is: poverty.
Malnutrition and hunger are two terms that describe the inability of an individual to meet his or her nutritional requirement.
Irrespective of whatever definition that is given to malnutrition and hunger, the fact still remains that such an individual suffering from malnutrition and hunger is not getting the adequate nutrition they need.
There are several factors that contribute to malnutrition and hunger, however, a leading cause that seem to be the genesis of malnutrition and hunger is poverty.
Poverty can be defined as a state of lacking the means to meet basic daily needs which includes good nutrition.
Most of the countries that are very impoverished have high percentage of their populace suffering from malnutrition and hunger.
When the means is not available to get adequate and quality food, hunger and malnutrition will always prevail against every other contributors.
In summary, irrespective of the fact that hunger and malnutrition has many contributors, one of the leading factors that is regarded as the primary cause of malnutrition is: poverty.Learn more here:
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in which stage of the cell cycle does a cell contain twice its normal number of chromosomes?
Answer:
anaphase
Explanation:
(don't mind this need 20)
What is meant by a phenotype ratio in a Punnett square?(1 point)
the number of genes that are possible in offspring
the fraction of possible offspring that contain a certain allele in their genes
the fraction of possible offspring that can be observed to have a trait
the number of alleles in possible offspring
✌️
Answer:
The fraction of possible offspring that can be observed to have a trait.
Explanation:
Just took the test. So yea hope it helps
The observable trait appearing probability for cross-breeding is the phenotype ratio in a Punnett square.
What is cross-breeding?The act of creating offspring, particularly through the mating of two purebred individuals who are from different breeds, variations, or even species, is known as crossbreeding. The practice is specifically referred to as designer crossbreeding because it is typically done with the intention of developing offspring that would acquire desired qualities of the parent lineages. Breeders frequently engage in this approach, particularly when the intended qualities will be advantageous to the progeny, such as when its biological fitness is improved.Hybridization and crossbreeding are sometimes used interchangeably. But specifically, hybridization is the act of creating hybrid offspring by mating two parents from different species.To learn more about cross-breeding, refer to
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discuss how the proper ties of water hole earth super life
Answer:
Water's extensive capability to dissolve a variety of molecules has earned it the designation of “universal solvent,” and it is this ability that makes water such an invaluable life-sustaining force. On a biological level, water's role as a solvent helps cells transport and use substances like oxygen or nutrients.
Explanation:
Please help I was supposed to have this done 2 days ago also I’ll give a lot of points for the right answers :)
Answer:
hypertonic solution=B
semipermeable membrane=D
Water level rise=F
Water level lowers=A
Solutes=C
hypotonic solution=E
Explanation:
hope that helps:)
The National Chlamydia Screening Programme was set up to reduce the
spread of Chlamydia in the UK. Explain one reason why screening individuals
without symptoms could help to reduce the spread of the disease.
Answer:
????
Explanation:
is this multiple choice or by what you learned?
Why are enzymes important, and how do they contribute toward metabolism?
Answer:
Why are enzymes important, and how do they contribute toward metabolism? Enzymes control activities of the cell by catalyzing reactions. Virtually all cellular activities require enzymes. ... Light provides energy to drive the light-dependent reactions.
Explanation:
what kinds of evidence from fossils might help determine whether dinosaurs were ectotherms or endotherms?
Why does a plant produce more sugar after summer?
Answer:
Sunlight = Energy
Explanation:
Plants have chlorophyll that uses sunlight from the sun to create energy.
The energy is then used to change carbon dioxide from the air into sugars like glucose. The plant transports sugars into the tissues like roots, flowers and fruits so it can grow.
Answer:
Plants have chlorophyll that uses sunlight to gather energy. The energy is then used to change carbon dioxide from the air into sugars like glucose and fructose. ... They transport sugars throughout the plant and supply it to tissues like roots, flowers and fruits that depend on this sugar to grow.
Explanation:
What is the rarest bird in the world currently?
Answer:
I believe it is the Bahama Nuthatch. But, I might be wrong, for it is a guess. Please let me know if I am correct or if I am wrong.
Answer:Madagascar Pochards
Explanation: The Madagascar Pochard, or sometimes known as the Madagascan pochard, is a very rare diving duck of the genus Aythya. Thought to be extinct in the late 1990s, individuals of the species were recovered in 2006 near Bemanevika, Madagascar, at Lake Matsaborimena. The species is only found in Madagascar's interior marshes, where it is endemic. The sole wild populations are currently found in Lake Sofia and Lake Matsaborimena. Meanwhile, there are slightly over 50 pochards at Bemanevika.
How do endodermal cells differ from other types of cells?
Answer:
The endodermis is not highly differentiated in stems and usually contains secondary starch. In the roots, the radial and transverse walls of the endodermal cells have bandlike thickenings containing suberin and lignin.
Explanation: PLS MARK BRAINLIEST
repurting of an artery is dangerous,why?
Look at the image.
Answer:
it is the bodies first line of defense
Explanation: