The statement science is a way of thinking means that science is the way that helps one to learn and think to solve real-world problems.
Asking questions, testing hypotheses, making observations, spotting patterns, and concluding are all examples of the intentional information searching that goes into scientific thinking. Science is the methodical investigation of the physical and biological characteristics as well as the structure and operation of the natural world. It is a comparatively modern approach to learning about natural events, having largely displaced the influences of less objective techniques and viewpoints.
So it is both a body of knowledge and a method of learning new things. For example, scientists have a clear understanding of the problem at hand and the question that needs to be answered. They challenge facts, judgments, and worldviews. They try to be precise, accurate, and relevant.
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What is oxygen indirect effects on other species in the food chain
Answer:
Reactive oxygen species directly interact with DNA, proteins and lipids and destroy them through oxidation process causing cell death (direct effect). High concentration of ROS damage structure and function of mitochondria and change the redox state of the cell interior (indirect effect).
Explanation:
how is it called to the weight shift and distribution of the body’s muscles at rest? it also includes the tensed ripple effect caused throughout the body.
Contrapposto called to the weight shift and distribution of the body’s muscles at rest it also includes the tensed ripple effect caused throughout the body.
'What is contrapposto?'
In the visual arts, contrapposto is a sculptural technique that dates back to the ancient Greeks. It involves a standing human figure that is positioned so that the weight of the body rests on one leg (known as the engaged leg), freeing the other leg, which is bent at the knee. The hips, shoulders, and head tilt as the weight shifts, signifying relaxation and the delicate organic movement that indicates life within. Both draped and bare people can be depicted in contrapposto. This formula was developed by the Greeks at the beginning of the 5th century BC as an alternative to the stiffly static stance, in which the weight is evenly distributed on both legs, that had previously dominated Greek figure sculpture.
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The approach taken in this course to understand the complexity of our relationships to non-human animals is
The multidisciplinary method used in this course to comprehend the intricacy of our connections with non-human animals is based on scientific data and investigates how those relationships have evolved over time.
What is non-human animals ?The spiritual ideas or thoughts that are still widely held as religious doctrines are those that relate to non-human animals. Since they do not share a common language, animals and humans communicate mostly through emotional connection and pleasant touch.Scientists identify the evidences that demonstrate their relationship, i.e., the ways in which they used to coexist in harmony, in order to analyze the evolutionary pattern of such changes. Understanding the intricate relationship also benefited from research on geographical changes.Animal rights are ethical precepts based on the idea that non-human animals deserve the freedom to live their lives as they like, free from being influenced by human desires. Autonomy, which is a fancy way of saying "choice," lies at the heart of animal rights.To Learn more About non-human animals refer to:
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The three basic variables that make up the life history of an organism area. life expectancy, birth rate, and death rate.b. number of reproductive females in the population, age structure of the population, and life expectancyc. age when reproduction begins, how often reproduction occurs, and how many offspring are produced per reproductive episoded. how often reproduction occurs, life expectancy of females in the population, and number of offspring per reproductive episodee. the number of reproductive females in the population, how often reproduction occurs, and death rate
The correct option is A; Age when reproduction begins, how often reproduction occurs, and how many offspring are produced per reproductive episoded.
A species' life cycle is determined by the timing of its growth, reproduction, and mortality.
Lengthy gestation durations of many months, gradual maturation (and consequently extended parental care), and long life spans are characteristics of K-selected species. Furthermore, they like to live in biological communities that are rather stable, such as late-successional or climax forests (see ecological succession).
Variables in an experiment are typically of three types: independent, dependent, and controlled. The independent variable is the one that the scientist alters. A good experiment has only ONE independent variable to ensure a fair test.
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the cells of the alveoli produce a fatty substance known as ________.
A group of cells called granular pneumocytes, which are also present in the alveolar walls and are thought to help lower the surface tension of the alveoli, are among the other cells found there.
A number of the pulmonary extracellular matrix's constituent parts were formed in primary cultures of rat alveolar type II epithelial cells (granular pneumocytes). Two of these elements, type IV procollagen and fibronectin, were partially purified through fractionation by ion-exchange chromatography of radiolabeled protein released into the culture medium. Studies using radioimmune precipitation and affinity-purified antibodies verified the identification of these proteins by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Additionally, thrombospondin, a platelet alpha-granule protein that has recently been demonstrated to be released by endothelium and other cells with mesenchymal ancestry and may play a role in platelet aggregation, was isolated by elution from diethylaminoethylcellulose with 0.5 M NaCl.
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what is the main substance that blood carries to all of your cells?
oxygen
Blood brings oxygen and nutrients to all the parts of the body so they can keep working. Blood carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system to be removed from the body.
Dichloro-diphenyl-trichloroethane, commonly called DDT, was a widely used pesticide in the United States from 1943 to the 1970s. By 1972, increasing awareness of the harmful effects on human health and wildlife resulted in the pesticide being banned from use in the United States. However, the environmental impact of DDT did not end when the ban was put into effect. Due to its chemical properties, DDT is known to remain in soil and animal tissues for 2–15 years and can pollute aquatic ecosystems for up to 150 years. Food contamination through all levels of the food chain continues to be a focus of research. The image shows the concentration of DDT found at the different trophic levels in ecosystems impacted by the pesticide.
Circular graphic showing the concentration of DDT at the different trophic levels. Algae show 0.04 ppm, zooplankton shows 0.23 ppm, small fish show 2.07 ppm, large fish show 7.36 ppm, and humans show 13.55 ppm.
Based on the information provided, what predictions can be made about the impacts of DDT on the ecosystem?
Humans and animals at the top of the food chain would suffer the greatest impact because the pesticide builds up at each tropic level, increasing the toxicity.
Aquatic producers at the base on the food chain would suffer the greatest impact because the pesticide can remain in aquatic systems for long periods.
Land mammals at the top of food chain would suffer the least impact because the pesticide remains in soil for a short amount of time.
Small fish in the middle of the food chain would suffer the least impact because the pesticide has not built up enough to harm them in any way.
Based on the information provided, the predictions which can be made about the impacts of DDT on the ecosystem is that Humans and animals at the top of the food chain would suffer the greatest impact because the pesticide builds up at each tropic level, increasing the toxicity and is denoted as option A.
What is Pesticide?This is referred to as substances that are meant to control pests and they contain toxic chemicals whicbh is why thry have to be carefully used to avoid impacting the ecosystem negatively.
From the information we can deduce that the pesticide builds up at each trophic level which is why humans show 13.55 ppm and is therefore why Humans and animals at the top of the food chain would suffer the greatest impact.
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Answer:
Humans and animals at the top of the food chain would suffer the greatest impact because the pesticide builds up at each tropic level, increasing the toxicity.
Explanation:
Because the number of pesticides over there is the greatest, so meaning that it will suffer the most.
Also took the test and got it right.
I promise it is right!!!! Just make the answers and questions are the same and u got it!!!!!!!!! ;)
Surrounding the Sahara and other
deserts in the region are steppe
climates. These are areas that get a
little more rain each year and are
able to support short grasses. What
are these areas good for?
A. grazing herds
B. lumber
C. agriculture
For places that receive a bit more rain each year and can grow short grasses, grazing herds are a suitable option.
Do steppes make good farming land?Although many marginal, semi-arid steppe areas have been planted with crops, they are not economically viable; most of the cereals produced in these areas are fed to livestock; however, grain yields in these areas are very low and produce no more livestock products than would be produced in natural grassland, despite being much more expensive.
Which land is most suitable for farming?A wide variety of specialized crops can be supported by well-drained, loamy soils. Stone fruit and root crops cannot be grown in clay soils with a finer texture and poor drainage without significant modification. When cultivated, excessively sloped land is vulnerable to erosion and is best suited for perennial plants.
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yeasts can perform both aerobic respiration and fermentation. in fact, the homebrewer must be careful that oxygen is not introduced into the carboy once the yeast begin fermentation. what would be the products if o2 is allowed to enter the carboy?
If oxygen is allowed to enter the carboy during fermentation, yeasts would perform aerobic respiration.
In aerobic respiration, yeast cells use oxygen as the final electron acceptor to produce energy, this process will produce carbon dioxide (CO2) and water (H2O) as the main by-products. During fermentation, yeast cells ferment sugars to produce energy without using oxygen. In the absence of oxygen, yeast will ferment sugars anaerobically to produce ethanol and CO2 as the main by-products.If oxygen is allowed to enter the carboy during fermentation, yeast will switch from fermentation to aerobic respiration. This can lead to several potential problems for the homebrewer. For example, the final alcohol content of the beer will be lower, the beer will have a different flavor and aroma, and the yeast may produce other by-products such as acetaldehyde, which can give a green apple-like taste to the beer. Additionally, the process can be halted.
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if the postsynaptic membrane potential reaches threshold level, an action potential will be produced.
True, if the post-synaptic membrane potential reaches threshold level, an action potential will be produced.
What is action potential?A sudden, quick, temporary, and propagating alteration of the resting membrane potential is known as an action potential. Excitability refers to the property that only neurons and muscle cells possess—the ability to produce an action potential.
A nerve signal is an action potential. These signals are produced by neurons and are carried along their processes as they travel to the target tissues. They will experience some sort of stimulation, inhibition, or modulation after being stimulated.
A stimulus that shifts the membrane potential to threshold potential values causes an action potential to be produced. In most cases, the threshold potential is between -50 and -55 mV.
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Full question:
If the post-synaptic membrane potential reaches threshold level, an action potential will be produced.
True or False
Help stuck on this one question
to be honest I think it's the answer A
What might have happened to the color-blind allele in the Pingelapee population following the typhoon if Mwanenied had had no children?
If he had never given birth, there would be a significant decline in population and nearly no one would be color blind.
The population has changed since color blindness is a symptom of inbreeding, and because of its tiny size and secluded location, achromatopsia is more common.
Achromatopsia is a rare, bilateral inherited retinal degeneration affecting all three types of cone photoreceptor cells that results in reduced visual acuity, photophobia, hemeralopia, and severe loss of color discrimination.Only the genotype frequencies, not the allelic frequencies, are altered by inbreeding.
Inbreeding, which is typically the outcome of mating related individuals, is defined as the probability that two alleles in an individual are identical by ancestry.
Red-green color vision abnormalities are brought on by genetic alterations involving the OPN1LW or OPN1MW genes. Defects in blue-yellow color vision are caused by OPN1SW gene mutations.
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What might have happened to the color-blind allele in the Pingelapese population following the typhoon if Mwanenised had had no children? Has the Pingelapese population evolved? Explain. (Hint: Does inbreeding cause a change in allele frequencies?)
What happens to colors that are not reflected off an object?.
There are two possibilities to the colors that are not reflected off an object: visible light is completely absorbed or transmitted. When light is absorbed, the object becomes black. If all light is transmitted, it appears transparent, and depending on its shape, it may even appear nearly invisible.
If a material or matter absorbs specific wavelengths or colors of the spectrum, an observer will not see these colors in the reflected light. However, if certain wavelengths of color are reflected from the material, an observer will see them and perceive the material in those colors.
Colored objects, on the other hand, reflect only a portion of the wavelengths they absorb. For example, if white light is shone on a red ball, the ball reflects mostly red light back at us, causing us to see red. The majority of the greens and blues in white light are absorbed by the ball, so we cannot see them.
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Q3-Non disjunction during meiosis of oogenesis will result in eggs that have.
a-The normal number of chromosomes
B-one less than the normal number of chromosomes
b-one too many chromosomes
d. both B and C correct
Option - d. both B and C are correct. During meiosis of oogenesis, non-disjunction can occur when the chromosomes do not separate properly during cell division.
This can result in eggs that have either one less than the normal number of chromosomes (monosomy) or one too many chromosomes (trisomy).
For example, if non-disjunction occurs during meiosis I, an egg may receive an extra copy of a particular chromosome, resulting in three copies of that chromosome (trisomy), or in the other hand, an egg may not receive a copy of a particular chromosome, resulting in one less than the normal number of chromosomes (monosomy).
Meiosis is a type of cell division that occurs in sexually reproducing organisms, such as plants and animals. It results in the formation of haploid cells, which have half the number of chromosomes as the original cell (known as a diploid cell).
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what happens when an individual specializes in producing one good or service and then receives other goods and services from another individual who specializes?
Specialization lowers production costs. Both parties benefit from the voluntary exchange that occurs when one person specialises to create one good and then purchases other desired goods from those other experts.
They become more proficient at a task the more they concentrate on it, which reduces the time and cost necessary to produce a good. In other words, more items can be produced with the same amount of time and money. The end consequence is that civilization as a whole can consume and produce much more than if each person tried to generate all of their own products and services. This is because workers can concentrate on their preferences and abilities, learn to do their specialised occupations better, and work in larger organisations. In order to become more effective, specialisation in business is concentrating on a single product or a small range of items.
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the genetic code specifies the correlation between_____
an RNA-nucleotide sequence and an amino-acid sequence.
What is a quiz on genetic code correlation?The relationship between is specified by the genetic code.an amino acid sequence and an RNA nucleotide sequence.One end of the a tRNA molecule connects with a complementary during translation.An amino acid sequence and an mRNA nucleotide sequence.RNA is copied form DNA in eukaryotic cells.
What does the term "genetic correlation" mean?An expected reflection of the pleiotropic action on genes or the correlation among causal loci in two qualities is reflected by the genetic correlation, a quantitative genetic measure that describes a genetic link between two phenotypes.
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an organism that must hijack host cells to reproduce is called
while doing a pedigree analysis of a european royal family, you notice a disease in a female child of two healthy parents. there are also some cousins with the same genetic disease. If this disease is controlled by a single gene, then the most likely explanation for these observations is the disease is
only seen in heterozygous individuals such as the daughter.
recessive and only seen in homozygous recessive individuals such as the daughter. dominant and is seen in homozygous dominant or heterozygous individuals. dominant and only seen in homozygous dominant individuals such as the daughter. a spontaneous mutation.
Only homozygous recessive people, like the daughter, are affected by the disease, which is recessive.
In this case, a single gene is responsible for the sickness; if Mendel's principles of inheritance are followed, the trait will either be dominant or recessive. However, in this instance, the parents of the affected girl and the other two affected cousins are all in good health. In order to increase their chances of having a child with the disorders, like this child, the two parents need be heterozygous for this trait (Rr). To sum up, this illness is recessive and only manifests in homozygous recessive people, like the daughter. An autosomal disorder is Tay-Sachs. This means that other chromosomes in the body, other the sex chromosomes, contain the variant gene or allele responsible for the illness. Its inheritance is hence autosomal recessive. Evidently no one will have this disease, thus there is no chance.
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which are true about meiosis but not mitosis?
1. it generates genetically different cells.
2. it generates haploid cells.
3. it involves prophase, metaphase, anaphase, and telophase.
4. it involves two rounds of nuclear division.
5. it begins with a diploid cell.
Answer:
4. it involves two rounds of nuclear division
Explanation:
unlike mitosis, meiosis involves two rounds of nuclear division, not just one. Despite this fact, many of the other events of meiosis are similar to those that occur in mitosis.
PLSSSS HELP
Part E
Sinuosity is a measure of how much a river meanders or curves. It is a ratio of the river’s entire curved length compared to a straight path from the river’s beginning to its end. According to this formula, a straight river would have a sinuosity equal to 1 because its entire length is equal to its straight-line length. A river that curves would have a sinuosity greater than one.
Calculate and record the sinuosity of your river. Then, based on the diagram, rate the river as straight, sinuous, or meandering. To obtain your river length, snake a piece of string through your river bed, and then measure the string’s length with your ruler. For the straight line length, measure the distance from the beginning of your river to the end along a straight path.
Based on the determined sinuosity of the river, it can be concluded that the river is meandering.
What is the sinuosity of a river?Sinuosity is a measure of how much a river meanders or curves. It is a ratio of the river’s entire curved length compared to a straight path from the river’s beginning to its end.
Mathematically,
Sinuosity = river length / straight-line length
Considering the given river in the diagram
The length of the river = 30 cm
The straight-line length = 15 cm
Sinuosity = 30/15
Sinuosity = 2
Since the sinuosity is greater than 1.5, the river is meandering.
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where does the right atrium pump blood when it contracts
Right atrium of the heart is where blood enters first. Blood is forced through the tricuspid valve and into the right ventricle by a muscular contraction.
A heart chamber, the right ventricle is one of the four. Low-oxygen blood is sent to the lungs by the right ventricle. The oxygen is then "refilled" in the lungs for the blood. When seen in the cardiac short axis plane, the right ventricle is positioned to the left of the right atrium and has a form resembling a semilunar shell that wraps around the left ventricle's anteromedial aspect (LV). Compared to the left ventricle, it has thinner walls because the right side of the heart is under less pressure. The heart's anterior and inferior boundaries are almost entirely formed by it.
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What color is reflected off a leaf?.
The color that reflected off a leaf is green.
Plants and leaves appear green because a "special pair" of chlorophyll molecules uses the red end of the visible light spectrum to power reactions within each cell. We see the unused green light that is reflected from the leaf. Photosynthesis' chemical reactions convert carbon dioxide from the air into sugars to feed the plant, and as a byproduct, the plant produces oxygen.
Because it does not absorb green wavelengths of white light, chlorophyll gives plants their green color. Because that specific light wavelength is reflected by the plant, it appears green.
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Another name for a convex lens is a converging lens. Converging means…
A. Brings light into focus (beams come together)
B. Spreads light our or focus (beams spread apart)
Answer:
A
Explanation:
Answer:
A. Brings light into focus (beams come together)
Explanation:
Converging lens or convex lens is a type of lens on which parallel rays of light after refraction converge or meet at the focus of the lens.
Hope it helps.
If you have any query, feel free to ask.
diagramC is a chloroplast as seen on a micrograph. B Remember: 1000 um (micron) = 1 mm ruler to measure the actual length of the scale and the length of the full specimen of (diagram C). Use your answers to calculate the actual length of the chloroplast. actual length of chloroplast = measured length of specimen x length on scale measured length on scale working and give the answer in microns (µm)
The actual length of the chloroplast is 8000 µm..
What is actual length?Actual length is the exact measurement of an object or distance from one point to another. It is the most accurate way of measuring the size of something, as it takes into account all the small details that could affect the measurement. Actual length is important when measuring objects such as buildings, roads, or other large structures, as well as in engineering and construction projects. For example, when constructing a bridge, the actual length of each beam needs to be measured accurately so that it fits properly. In other cases, such as when measuring a room, the actual length of the walls needs to be known so that furniture or other items can fit in the room properly.
The measured length of the specimen is 1 mm. The length of the full specimen on the scale is 8 µm.
Therefore, the actual length of the chloroplast is 8 x 1000 µm = 8000 µm.
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What type of cell junction connects the cytoplasm of two adjacent cells to facilitate molecule exchange?.
Gap junctions, which connect the cytoplasm of adjacent cells, are crucial for signaling.
They are intercellular junctions. Structures called desmosomes are designed for the transmission of force and cell-to-cell attachment. Gap junctions' analogue in plant cells, plasmodesmata, are routes for transport and communication.
Gap junctions are specialized junctions that enable very quick cell-to-cell communication. They make this possible. Ions can move between nearby cells at these junctions because they connect their cytoplasms.
By allowing tiny molecules to move straight from one cell's cytoplasm to that of another, these junctions enable communication between nearby cells.
There are many different types of animal cells, and these connections between cells are known as gap junctions. Two cells' cytoplasms are directly connected by them.
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a change in the relative frequencies of alleles in the gene pool of a population is called
Any change in allele frequencies in a gene pool is called genetic drift. Hence, genetic drift is correct.
The change in the frequency of alleles in the population is due to random reasons. It may reduce the genetic variation or cause gene variants to disappear completely. There are two main types of genetic drift population bottlenecks and the founder effect. Severe reduction in small population size, recurring population, and when the population starts from a small number of organisms are three main causes of genetic drift. It is different from a mutation which causes a slow change in the genes variant, while genetic drift eliminates genetic variants.
Any change in allele frequencies in a gene pool is called genetic drift. Hence, genetic drift is correct.
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what are the four most abundant elements found in living systems?
The four most abundant elements found in living systems are carbon, hydrogen, nitrogen, and oxygen. In living systems and are essential for the formation of the molecules of life.
Carbon is the building block of organic molecules i.e living systems such as carbohydrates, lipids, nucleic acids, and proteins. Nitrogen is an essential component of many biomolecules such as amino acids, which are the building blocks of proteins, and nucleotides, which make up nucleic acids. Nitrogen , Oxygen is also a component of many molecules such as water, and is involved in many chemical reactions that take place in living systems . Together, these four elements make up over 99% of the atoms in living systems and are essential for the formation of the molecules of life, the functioning of the cell, and the overall survival of living systems .
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Biomolecules are essential organic molecules which are involved in the maintenance and metabolic processes of living organisms. Biomolecules include carbohydrates, lipids, proteins, and nucleic acids. These vary in composition, structure, and function. Select 3 choices that correctly pairs the biomolecule and one of its functions.
The options B, C, and D accurately match the biomolecule to one of its functions.
Biomolecules are crucial chemical compounds that support metabolic processes in living things. Among these biomolecules are: The primary biomolecule responsible for generating and replacing cells in the body is called protein. The body's primary energy source is carbohydrate. Lipids: These substances also give the body energy. It makes up the majority of the membrane lipids in the cell membrane. The genetic makeup of the organism is stored in nucleic acid. As a result, choices A and E are incorrect. This is due to the fact that proteins are body builders rather than energy stores. Instead of serving as chemical messengers, nucleic acids serve to preserve an organism's genetic makeup.
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complete question: Biomolecules are essential organic molecules which are involved in the maintenance and metabolic processes of living organisms. Biomolecules include carbohydrates, lipids, proteins, and nucleic acids. These vary in composition, structure and function. Select ALL of the choices that correctly pairs the biomolecule and one of its functions.
A) proteins: store energy
B) carbohydrates: make up plant cell walls
C) nucleic acids: store genetic information
D) Lipids: compose part of the cell membrane
E) nucleic acids: chemical messengers (hormones)
In what phase does the following event occur? A new nuclear membrane forms around the chromosomes.
A nucleolus emerges in each new nucleus, the spindle vanishes, and a nuclear membrane reforms around each set of chromosomes during the telophase.
What do you mean by telophase?A eukaryotic cell's telophase is the last phase of both meiosis and mitosis. The disintegration of the nucleolus and nuclear membrane that occurs during prophase and prometaphase is reversed during telophase. The nucleoli return, a nuclear envelope is reassembled around each set of chromatids, and chromosomes start to decondense back into the extended chromatin that was present during interphase as they reach the cell poles. The residual spindle microtubules are depolymerized after the mitotic spindle has been destroyed. Approximately 2% of the cell cycle's time is spent in telophase. When cytokinesis is complete, the two daughter nuclei are divided into two distinct daughter cells. Cytokinesis normally starts before late telophase. Dephosphorylation of mitotic cyclin-dependent kinase (Cdk) substrates is the main cause of telophase.
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what are hormones ? give their characterstics and functions
Answer:
Hormones are chemical messengers produced by the endocrine glands that travel through the bloodstream to regulate various physiological processes in the body. They are responsible for a wide range of functions, including growth and development, metabolism, sexual function, and mood.
-Characteristics of hormones:Hormones are chemical substancesThey are produced by endocrine glandsThey are secreted into the bloodstreamThey travel to specific target cells or tissuesThey affect the activity of those cells or tissues-Functions of hormones:Control of metabolismGrowth and developmentSexual function and reproductionMood regulationHeart rate and blood pressure regulationImmune system regulationStress responseHunger and thirst regulationSleep and wake cyclesBody temperature regulationHope this helps!Keep Learning!<3
