A positive feedback loop causes a self amplifying cycle in which a physiological change leads to even greater change in the same direction?
Answers
The given statement is TRUE.
A positive feedback loop causes a self amplifying cycle in which a physiological change leads to even greater change in the same direction.
A negative feedback loop is a process in which the body senses a change, and activates mechanisms to reverse that change.
What is a positive feedback loop?
In nature, a positive feedback loop happens when the outcome of a reaction increases that reaction. A positive feedback loop pushes a system further away from the equilibrium goal if we consider a system in homeostasis. It takes place when something needs to happen quickly and does this by enhancing the effects of a product or event.
Example : Ripening of fruit
In nature, there is a strange phenomenon when a tree or bush may suddenly and silently begin to ripen all of its fruit or veggies. This is the first instance of a beneficial biological feedback loop we've found. If we see an apple tree with many apples, they all appear to ripen over night, going from being unripe to ripe to overripe. The first apple to ripen will mark the start of this. It releases ethylene (C2H4) via its skin when it is ripe. The apples nearby ripen as a result of being exposed to this gas. As soon as they are ripe, they too begin to generate ethylene, which continues to ripen the rest of the tree in a manner akin to a wave.
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Related Questions
what will happen if the relative humidity is 100 percent, and the temperature begins falling?
Answers
Answer:
It will start to rain.
Explanation:
List some creative ways for changing people's perception of bugs as pests (aleast 2)
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-study purposes
Sorme of the creative ways of changing people's perception about bugs as pests are:
Showing them how useful they are to the environmentTelling them how they can turn bio-waste into high quality animal feedBugs are insects that is usually small in size and has wings, carrying microorganisms that can be transmitted to someone else through contact.
However, this has been the universal understanding of budgets, even though they also help the environment by converting bio-waste which contains human feces and other kinds into high protein that can be used as manure, therefore stabilising the environment.
Some examples of bugs include:
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The plant hormone that triggers the withering of petals and stamens and promotes fruit ripening is
A. abscisic acid.
B. cytokinin.
C. gibberellin.
D. auxin.
E. ethylene.
Answers
The plant hormone that triggers the withering of petals and stamens while promoting fruit ripening is ethylene.
Correct option is E.
Abscisic acid is a plant hormone primarily involved in controlling processes such as seed dormancy, leaf abscission, and inhibition of cell division. It is produced in growing leaves and buds and is also found in fruits and seeds, where it performs a ripening and ripening-related functions. When abscisic acid accumulates in the reproductive organs, it causes the petals and stamens to wither and fall off.
It also triggers the ripening of fruits and vegetables by activating specific enzymes in the cells. Abscisic acid is also involved in other important processes like controlling leaf water stress through the stomatal closure and promoting bud dormancy. It primarily works in opposition to auxin, a plant hormone that stimulates fruits and leaf abscission.
Correct option is E.
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The following diagram shows an incomplete equation for cellular
respiration
Glucose + Oxygen - Carbon Dioxide + Water + ?
What information will complete this equation?
A Food
B Wastes
C Energy
D Chlorophyll
Answers
to regenerate ATP is the chemical energy stored in food like glucose
Why are golgi bodies found in large numbers in the cells which secrete digestive enzymes?
Answers
Answer:
Golgi bodies are found in large numbers in the cells which secrete digestive enzymes because they are responsible for the production of those enzymes.
Explanation:
All secretory cells have a large number of Golgi bodies present in them because Golgi bodies help in the transport of these substances to the target areas and in some cases even help in the formation of the substances of the secretory cells, for example- digestive enzymes.
In plant cells, Golgi bodies secrete polysaccharides and pectin which help in the formation of the plant cell wall.
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Answer: For protein modification and maintaining cellular homeostasis
Explanation:
For protein modification: Digestive enzymes are usually synthesized as inactive precursor molecules (zymogens) within the cell.Maintaining cellular homeostasis: The Golgi apparatus helps maintain cellular homeostasis by regulating the transport and secretion of digestive enzymes.
Overall, the abundance of Golgi bodies in cells that secrete digestive enzymes reflects their critical role in the processing, packaging, and secretion of these enzymes.
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what would be the genotypic and phenotypic ratio of a dihybrid cross between ppss and ppss (this is a typical dihybrid cross)
Answers
A dihybrid cross between ppss and ppss would result in a genotypic ratio of 1:2:1:0 and a phenotypic ratio of 1:2:1, representing the proportion of offspring with different combinations of dominant and recessive expressions for the two traits under consideration.
In a dihybrid cross, two traits that are located on different chromosomes are considered. The genotype of the parents can be represented by the alleles they possess for each trait. In this case, the parents are both ppss, meaning they are homozygous recessive for one trait and homozygous dominant for the other trait.
The two traits segregate independently during meiosis, and each contains one allele for each trait. Therefore, we can determine the possible gametes for each parent:
ppss parent: ps, ps
ppss parent: ps, ps
When these gametes combine, they can produce four different genotypes for their offspring: PpsSs, ppSs, Ppss, and ppss. The phenotypic ratio can be determined by looking at the physical traits expressed by the offspring. The PpsSs genotype represents the dominant expression of both traits, the ppSs and Ppss genotypes represent the dominant expression of one trait and the recessive expression of the other trait, while the ppss genotype represents the recessive expression of both traits.
Therefore, the phenotypic ratio of the offspring would be 1:2:1, representing the proportion of offspring with the dominant expression of both traits, dominant expression of one trait and recessive expression of the other trait, and recessive expression of both traits, respectively.
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Which element has one valence electron and six energy levels?
Answers
There is no element with one valence electron and six energy levels. Only two valence electrons and six energy levels.
Answer:
Calcium
Explanation:
A: Calcium is a group 2 element with two valence electrons. Therefore, it is very reactive and gives up electrons in chemical reactions. It is likely to react with an element with six valence electrons that “wants” to gain two electrons. This would be an element in group 6, such as oxygen.
autorhythmic cells . are located in the ventricles. are the same size as myocardial contractile cells. have organized sarcomeres. contribute to the force of contraction. none of the answers are correct.
Answers
autorhythmic cells . are located in the ventricles
d)none of the answers are correct.
The autorhythmic cells act as a pacemaker to start the cardiac cycle (the heart's pumping cycle) and as a conduction system to synchronize the contraction of muscle cells all over the heart. These places are where the autorhythmic cells are found: Sinus node, also known as Sinoatrial (SA). AV (atrioventricular) node Heart's atrioventricular (AV) bundle (also sometimes called the bundle of His). a muscular chamber in the heart that pumps blood into the circulatory system from the ventricles. A few invertebrate species have ventricles. Fishes and amphibians typically have a single ventricle while mammals, reptiles, and birds typically have two.
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what is a abscisic acid
Answers
Answer:
a plant hormone which promotes leaf detachment, induces seed and bud dormancy, and inhibits germination.
Abscisic acid (ABA) is a plant hormone. ABA functions in many plant developmental processes, including seed and bud dormancy, the control of organ size and stomatal closure. It is especially important for plants in the response to environmental stresses, including drought, soil salinity, cold tolerance, freezing tolerance, heat stress and heavy metal ion tolerance
Complete the following paragraph selecting words from the list below. Pollination is the transfer of ……. from the ……..to the …….in a flower. In cross-pollination, the ……. from a flower on one …….is transferred to the …….of another ……. of the same species. (7 marks)
Anthers, ovule, stigma, plant, flower, pollen, ovary, petal, style, receptacle, stamens
Answers
Answer:
pollen grain from the stigma
cross pollination -transfer of pollen grain from one flower to the other but of the same kind
Why is astrology referred to as a pseudoscience?
Answers
Answer:
Astrology has not demonstrated its effectiveness in controlled studies and has no scientific validity, and is thus regarded as pseudoscience.
Explanation:
1. Which sentence about galaxies provides evidence of universe expansion that supports the Big Bang Theory?
Galaxies are moving away from each other.
Galaxies are in constant motion.
Galaxies are moving more slowly than they have in the past.
Galaxies are moving at different speeds and in different directions.
Answers
Answer:
The answer is "Galaxies are moving away from each other." I hope this helps
Explanation:
The sentence about galaxies provides evidence of universe expansion that supports the Big Bang Theory A. Galaxies are moving away from each other.
According to the Big Bang Theory, it was stated that an explosion resulted in the creation of the universe. It's the explanation that was given regarding how the universe was created. The evidence of universe expansion that supports the Big Bang Theory is that the galaxies are moving away from each other. It should be noted that galaxies move. They can move and rotate through space. As a result of the expansion of the Universe, galaxies are moving away from each other.Read related link on:
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Need ins
1. Which one of these things is not something that a clownfish needs?
a. algae
O b. the sun
O c. sharks
d. other clownfish
Answers
Answer:
c. sharks
Explanation:
The instructions that determine what will happen to a cell are coded in the ______________________ in its nucleus
RNA
DNA
Cytoplasm
Cell wall
Answers
WILL MARK U AS BRAINLIST
Henry wants to make a model to learn about a science topic. Which topic can Henry learn about BEST by using a model?
A. all of insects that live in the rainforests of Brazil
B. what call a cardinal makes early in the morning
C. how the sun’s rays cause lunar eclipses
Answers
Answer:
C
Explanation:
Where is the carbon taken in by plants during photosynthesis stored?a. the groundb. plant structuresC. the aird. all of the above
Answers
The carbon is taken from the air and is used in photosynthesis to produce glucose (from carbon dioxide and water reacting with the sunlight). This carbon enter the leaves through the stoma and is incorporated into organic compounds within the plant structure (being stored there).
Therefore, the correct answer is b. plant structures.
please help asap ill give you that brain thing if you have a correct answer tysm
Answers
Answer:
Synthetic :oil
Explanation:
8. A liquid is placed in a jar and sealed. The liquid is heated, and it turned into a gas. If the number of atoms in the sealed jar stayed the same, what happened to the mass of the jar and everything inside it after being heated?
Answers
Can someone give an explanation as to why DNA strands are antiparallel?
Answers
Answer:
Explanation:Yes, the DNA strands are antiparallel because of the way that the nucleotides are paired and linked together in a DNA molecule.
DNA is made up of two complementary strands of nucleotides, which are the building blocks of DNA. Each nucleotide is composed of a sugar molecule, a phosphate group, and a nitrogenous base. The sugar and phosphate groups are linked together to form the backbone of the DNA strand, while the nitrogenous bases pair up in the center of the molecule.
The nitrogenous bases in DNA include adenine (A), thymine (T), cytosine (C), and guanine (G). A always pairs with T, and C always pairs with G. These base pairs are held together by hydrogen bonds.
The antiparallel nature of DNA arises from the orientation of the sugar molecules in each strand. The sugar molecules in DNA are arranged in a specific way, with a phosphate group linked to the 5' carbon of one sugar and the 3' carbon of the next sugar. The orientation of the sugar molecules is said to be 5' to 3' in one strand and 3' to 5' in the other strand.
This orientation creates a polarity in the DNA molecule, with one end having a free 5' phosphate group and the other end having a free 3' hydroxyl group. This polarity allows for the specific pairing of the two DNA strands in a complementary fashion, with the A-T and C-G base pairs forming in the center of the molecule.
Therefore, the two strands run in opposite directions and are referred to as antiparallel. This arrangement is critical for the stability and functioning of DNA, as it allows for accurate replication and transcription of genetic information.
Help me I don’t understand
Answers
Answer: Heterozygous, as related to genetics, refers to having inherited different versions (alleles) of a genomic marker from each biological parent. Thus, an individual who is heterozygous for a genomic marker has two different versions of that marker. By contrast, an individual who is homozygous for a marker has identical versions of that marker.
Organisms can be homozygous or heterozygous for a gene. Homozygous means that the organism has two copies of the same allele for a gene. An organism can be homozygous dominant, if it carries two copies of the same dominant allele, or homozygous recessive, if it carries two copies of the same recessive allele. Heterozygous means that an organism has two different alleles of a gene. For example, pea plants can have red flowers and either be homozygous dominant (red-red), or heterozygous (red-white). If they have white flowers, then they are homozygous recessive (white-white). Carriers are always heterozygous. People with CF are homozygous recessive. Since Huntington's disease is autosomal dominant, people with the disease can be either homozygous dominant or heterozygous.
Their is the definitions hope this clears it up a tad for you.
hope i helped
Explanation:
What is weather? and what is the 4 seasons
Answers
What is the source of energy for deep sea organisms?
Answers
What is Protein content of edema fluid in non-cardiogenic pulmonary edema?
Answers
In non-cardiogenic pulmonary edema, the protein content of the edema fluid is typically higher than in cardiogenic pulmonary edema. This is because non-cardiogenic pulmonary edema is caused by an injury to the lungs or an underlying disease process, rather than a heart-related issue.
The protein content of edema fluid in non-cardiogenic pulmonary edema can vary depending on the underlying cause of the condition. For example, in cases of acute respiratory distress syndrome (ARDS), the protein content of edema fluid can be very high due to the increased permeability of the lung capillaries.
Other conditions that can cause non-cardiogenic pulmonary edema and increase protein content in the edema fluid include pneumonia, inhalation of toxic substances, and near-drowning. In these cases, the edema fluid may also contain other substances such as inflammatory cells or microorganisms.
Monitoring protein content in edema fluid is an important diagnostic tool in evaluating the severity of non-cardiogenic pulmonary edema and determining the most appropriate treatment plan. In some cases, a bronchoalveolar lavage (BAL) procedure may be performed to obtain a sample of the edema fluid for analysis.
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In which pond will gill breathing snails be replaced by lung breathing snails that climb to the surface to breathe
Answers
Gill breathing snails will be replaced by lung breathing snails that climb to the surface to breathe in the pond that has Cattails, bulrushes, and water lilies growing in it.
What is a snail?A snail is an animal with a long soft body with no backbone, they are invertebrate animals.
Cattails, bulrushes, and water lilies are plants with roots in the bottom of the pond, but they can grow to the surface of the water. They serve as habitats or dwellings for animals that need to climb to pond surfaces for oxygen.Conclusively, ponds that contain Cattails, bulrushes, and water lilies can replace gills with by lung breathing snails.
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According to the author, how has the almond tree
monoculture affected honeybees in Central Valley,
California? What evidence is provided to support the
claim?
I
Answers
Hello. You did not enter the text to which this question refers, which makes it impossible for it to be answered. However, I will try and help as best I can.
The only way you can answer this question is by reading the text. During this reading, you will notice that there is an element in monoculture that is harming bees, making them have a very difficult life or even die. This element is what is affecting the bees. The author will show why this element is harmful to bees through sentences that prove the effect that this element promotes and how it only exists in monocultures. These sentences will be the text evidence.
It is likely that the author shows how monoculture requires a large use of pesticides, which ends up harming the life of bees. He can also show that monoculture decreases the availability of food for bees, since all monoculture plants only flower once a year and leave the bees without food for the rest of the year, as there is no plant diversity in the monoculture.
Answer:
sample response
Explanation:
Because of the growth of the almond trees, many honeybees have died. Honeybees do not naturally live near the trees so they are transported to the area in order to pollinate the trees. However, the bees are exposed to pesticides that are used on the trees. Many also likely die because the almond trees only bloom in February, so the bees do not have enough food for the rest of the year.
Which process is part of transcription?
DNA is copied to create a second DNA strand.
mRNA codons and tRNA anticodons assemble amino acids.
DNA is unzipped with the aid of DNA polymerase.
mRNA is synthesized from a strand of DNA.
Answers
Answer:DNA is copied to create a second DNA strand.
Explanation:Transcription is the process in which a gene's DNA sequence is copied (transcribed) to make an RNA molecule. ... RNA polymerase uses one of the DNA strands (the template strand) as a template to make a new, complementary RNA molecule. Transcription ends in a process called termination.
Answer:A
Explanation:
This dichotomous key helps scientists classify within the arthropoda phylum. If scientists discover an organism with: less than 10 legs, 6 legs, wings, wings with 1 or 2 colors, with legs that are approximately the same length, wings that are not net-like, and wings that meet in a straight line down the back, how would this organism be classified?
Answers
You'll have to follow the dichotomous key that's provided to you. Start by choosing less than 10 legs, then choose 6 legs, then with wings, then wings with 1 or 2 colors... etc. You should end up identifying an organism this way.. following the path.
What is the main cause of anxiety
Answers
Answer:
It could be multiple things from stress to impatience or if your worrying about something and your anxious about it.
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The diagram below shows stream gradient. If a stream has a horizontal distance of 10 km and begins at an elevation of 100 m higher than where it ends, what is its stream gradient?
A. 10 km + 100 m = 110 km/m
B. 100 m / 10 km = 10 m/km
C. 10 km / 100 m = .10 km/m
D. 100 m * 10 km = 1000 m/km
Answers
The stream gradient of the stream shown in diagram is about 10m/km. Stream gradient is the slope of a stream's channel. Thus, the correct option is B.
What is Stream gradient?Stream gradient is the measurement of the ratio of the drop in elevation of a stream per unit of horizontal distance, generally expressed as in the unit of meters per kilometer or feet per mile.
The gradient equation is another way which is used to refer to the gradient of a straight line with the use of x and y coordinates. So here, the gradient equation can be written as m = rise / run where m is the stream gradient or slope.
Therefore, the value of stream gradient can be calculated as:
Stream Gradient = Elevation/Horizontal distance
Stream Gradient = 100m/10km
Stream Gradient = 10m/km
Therefore, the correct option is B.
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Answer:
B. 100 m / 10 km = 10 m/km
Explanation:
Which part of the heart are the pacemaker cells found in?
Answers
Answer:
It is located in the upper wall of the right atrium of their heart
Explanation:
The peacemaker cells or sinoatrial node are specialised cells located in the upper part of the right atrium which is one of the heart chamber at the junction of superior vena cava and it is responsible for producing electrical impulses that makes the heart to beat.