Which of the following DOES NOT cause a mutation?

Environmental factors such as radiation and chemicals

Infectious agents like viruses and bacteria

Spontaneous mutations

Pure water

This is not a question.

When doing activities that fall under USDA pain categories B, C, or D on the same animal, the animals utilized in the experiment should be placed in USDA category D.

The level of pain that an animal employed in testing and research may experience is categorized using the USDA pain categories. These are the categories:

USDA B: The animal won't experience any type of suffering.

USDA C: The animal may experience sporadic little pain.

USDA D: Excruciating processes that medication will lessen.

USDA E: Excruciating processes that cannot be eased.

According to Category B, the animal won't experience pain. These animals are frequently utilized for breeding, which is a natural procedure that doesn't harm the animals.

In contrast to animals in category E, animals in category D undergo unpleasant or stressful operations and are given anaesthetics and other pharmacological agents to lessen or totally relieve the discomfort.

There is a rigid rule for these categories. Because the experiment will include USDA B, C, and D procedures, the animals must be classified according to the USDA category that will involve the most painful technique.

To know more about  categories

https://brainly.com/question/15061148

#SPJ4

Answer:

As lagartas das espécies de

borboletas investigadas pelo biólogo

Lucas Kaminski, em sua pesquisa de

doutorado, possuem glândulas que

produzem uma substância doce, das

quais as formigas se beneficiam. De

contrapartida, numa relação mutualística, as borboletas têm suas “filhas”

(as lagartas) protegidas contra ataques

de outros inimigos naturais e podem

se alimentar das plantas ocupadas

pelas formigas sem correr risco de

serem atacadas. O coorientador Paulo

Oliveira, especialista em ecologia

comportamental de insetos, explica

que as borboletas geralmente não

têm como lutar contra outros herbívoros, então, no caso dessas famílias,

as formigas acabam atuando como

guardiãs das larvas. “Ninguém chega

perto para fazer mal às larvas, pois

as formigas são agressivas e agem

como guarda-costas das lagartas”,

explica Oliveira. A tese de doutorado

está inserida dentro de uma linha de

pesquisa consolidada na Unicamp,

que aborda a interface da interação

entre plantas, formigas e herbívoros

no cerrado, coordenado por Oliveira.

O processo de seleção natural foi

observado por Kaminski quando,

após 25 dias de acompanhamento e

monitoramento do comportamento

de borboletas da espécie Parrhasius

polibetes, ele constatou que para tais

espécies a presença das formigas é

mais importante que a das plantas para

ovopositar, a fim de garantir a sobrevivência de sua prole. “O momento

mais importante na história evolutiva

dessas borboletas é colocar os ovos

onde suas larvas possam sobreviver”, explica Kaminski. De maneira

simples, Oliveira explica: “Sua prole

vai sobreviver aos ataques de outros

predadores e ainda vai ter do que se

alimentar. Elas serão avós porque as

larvas chegarão seguras à fase adulta e

os genes podem se perpetuar graças à

relação mutualística com as formigas”.

Oliveira lembra que formiga é o

bicho mais abundante da Terra. Se

for feito um quadrado na floresta

Amazônica de 100x100 metros,

serão encontradas 8 milhões de formigas no solo, segundo o biólogo.

Se pensar que todas elas, agressivas

como são, sobem em folhas para se

alimentar, isso é um problema grande para o indivíduo herbívoro. “O

principal dilema para os herbívoros

é não ser atacado por formigas na

hora de se alimentar”, acrescenta.

A relação amistosa das formigas

com outros insetos mutualistas já tinha

sido comprovada em estudos anteriores, que também foram importantes na

tese para constatar que as borboletas

exploram outras associações. É o caso

das cigarrinhas Guayaquila, parentes

dos pulgões, que também liberam

substâncias açucaradas importantes

para as formigas. O pesquisador observou que essas cigarrinhas também

servem como referência para as borboletas na hora de escolher os ramos

de Schefflera, planta tradicional do

Brasil, para colocar ovos. “Além de

localizar as formigas, elas conseguem

identificar essas cigarrinhas, pois sabem que ali suas larvas também estarão protegidas”, acrescenta Kaminski.

A descoberta de Kaminski é importante para compreender a história

evolutiva dessas famílias de borboletas, mas também para ampliar os estudos sobre outras interações da biodi versidade

Explanation:

Answer:

Lycaenid butterflies and ants are representative examples of mutualism, in which different species benefit from the activities of the other.

Explanation:

What is the mechanism or reason behind the ant association with butterfly larvae? ... Both of they got the benefit from each other, Larvae got protection and in reverse ants got food (Sugary substance secreted from 7-8 segment of body) from the larval body.

Artificial selection is the identification by humans of desirable traits in plants and animals, and the steps taken to enhance and perpetuate those traits in future generations.

To learn more about phenotypic refer to:

https://brainly.com/question/902712

#SPJ1

Answer:

After four half lives or 32 years, only 12.5 grams will be left.

Hope it helps :)

Answer:

Option 1

Explanation:

The way the layers stack on each other is a obvious example of sedimentary rock.The sediments form layers on top of each other over time that hardens into rock creating layers. Geologists use these layers to determine how old something is or what time period a fossil was from. The sediments form layers on top of each other over time that hardens into rock creating layers.

Secondary sewage treatment is distinguished from primary sewage treatment by the following:

Aeration of liquid effluent following chlorination.

Addition of bacteria to process organic contaminants.

Removal of inorganic nutrients from the liquid effluent.

Primary sewage treatment is the initial step in the treatment of waste water, and it typically includes the separation of the suspended solids from the liquid effluent. This can be achieved through sedimentation, mechanical screens, and other physical means to remove the larger particles from the waste water.

Secondary sewage treatment goes one step further by using biological processes to remove dissolved organic matter and inorganic nutrients from the liquid effluent. This is typically done through the use of microorganisms, which break down the organic matter in the waste water. Aeration is used to provide the microorganisms with oxygen, which is necessary for their growth and metabolism.

Chlorination can be used as a final disinfectant step following secondary sewage treatment to kill any remaining pathogens, but it is not a requirement of secondary treatment.

Learn more about sewage treatment:

https://brainly.com/question/27936084

answer: In a controlled experiment, the study population is often divided into two groups. One group receives a change in a certain variable, while the other group receives a standard environment and conditions. This group is referred to as the control group, and allows for comparison with the other group, known as the experimental group.

Explanation:

BELIEFS: In Japan, it is believed that folding 1000 paper cranes can grant a person a wish.

• AESTHETIC: In the Himba tribe of Namibia, women cover their skin with a mixture of butterfat and ochre to enhance their beauty and protect their skin from the sun.

• EDUCATION: In some parts of India, the Guru-shishya tradition is still practiced, where a student lives with and learns from a Guru (teacher) in a specific field, such as music or martial arts.

• RELIGION: In Bali, Indonesia, daily offerings and prayers are made to the gods and ancestors, often including small intricate woven baskets filled with rice, flowers, and other items.

• MATERIAL CULTURE: In the Inuit community of the Arctic, igloos were traditionally made as temporary shelters out of snow and ice blocks.

Culture in the above sense refers to the shared beliefs, values, customs, behaviors, and artifacts that characterize a group or society. It encompasses various aspects of human society, including beliefs and traditions, language, religion, art and aesthetics, education, and material culture.

Culture can be defined as a way of life of a particular group of people and is passed down from generation to generation through socialization.

In the examples provided above, different cultural practices are discussed in relation to the given elements such as beliefs, aesthetic, education, religion and material culture. For example, the practice of folding 1000 paper cranes in Japan is a cultural belief that is passed down through generations.

Learn more about  culture from

https://brainly.com/question/20306929

#SPJ1

Answer:

Option A.

Explanation:

The sodium pump in the neuron is electrogenic,there are three Na+ from every K+ that enter the cell . If there is a blockage to all sodium pump activity in a cell, there would be an instant change in the membrane potential which will not allow the action potential to take place because a hyperpolarizing current was removed, which means that the membrane potential becomes less negative. Therefore the electrogenic contribution of the sodium pump to the membrane potential will be small which lead to small depolarization.

Answer:

O happiness

Explanation:

According to this question, Dopamine is a neurotransmitter that makes a person feel happy when released in the brain. However, it is stated that certain drugs stop the synapses from removing neurotransmitters, like Dopamine.

Hence, when these drugs cause the amount of neurotransmitters in the synapses to be increased, this means that the response caused by those neurotransmitters will also be increased. For example, an increase in Dopamine will cause an increase in HAPPINESS.

Answer:

B. Happiness.

Explanation:

Answer: lysosome

Explanation: Tay sach's disease impairs the functions of the lysosomal enzymes and causes the build up of GM2 ganglioside.

Tay sach's disease can also be called lysosomal disease due to the impairment it the lysosomal enzymes.

Answer:

the central nervous system uses these synapses to transfers electrical impulses to the brain through the spinal cord.

Explanation:

For example a stimulus such as bright light is detected by receptor cells, this sends electrical impulses through the sensory neurons and passes them through synapses to relay neurons. The gap between these neurons are called synapses which use neurotransmitters (chemicals) to send the impulse over the gap. Lots of these synapses are in the spinal cord and brain so that more of these impulses can be received and therefore a motor neuron can send an impulse to an effector so a response can be issued, for this example the response would be closing the eyes so that the bright light doesn't damage the eyes- this is an example of a reflex action.

Sorry if this doesn't make sense or I've explained it wrong! I hope I've helped in the slightest!

There are huge number of synapses in the spinal cord and the brain as these synapses are used by the central nervous system to send electrical impulses to the brain via the spinal cord.

To illustrate, when a stimulus like as strong light is received by receptor cells, electrical impulses are sent by sensory neurons and sent across synapses to relay neurons. Synapses are the gaps between these neurons that employ neurotransmitters (chemicals) to transfer the impulse across the gap. A lot of these synapses are in the spinal cord and brain so that more of these impulses can be received and thus a motor neuron can send an impulse to an effector so that a response can be issued, for example, closing the eyes so that the bright light does not damage the eyes- this is an example of a reflex action.

As a conclusion, as synapses are employed by the central nervous system to transfer electrical impulses to the brain via the spinal cord, we may assume that there are a large number of synapses in the spinal cord and brain.

Learn more about synapses here:

https://brainly.com/question/10641669

#SPJ2

The difference in diversity of species which are present in two different sites cannot be determined just be looking at the number of species.

The diversity of species or species diversity can be defined as the number of different species which are present in an ecosystem and also the abundance of those species. Species diversity changes with change in location.

There are several factors which determine the species diversity. These factors include competition amongst the species, genetic diversity, diversity in habitat etc. These factors can help us determine the difference in species diversity of different locations. We cannot conclude regarding diversity just by looking at the number of species.

To learn more about species diversity here

https://brainly.com/question/13259455

#SPJ4

Substitution is an example of  missense mutation.

Substitution is considered as a type of mutation in which their is a replacement of one nucleotide with different nucleotide. It can also be defined as the replacement of one amino acid in a protein with totally different amino acid.

In general,  missense mutation takes place when there is a fault in the DNA code and as a result that one of the DNA base pairs is changed, for example, A is swapped for C. This change in the DNA sequence due to Substitution results in change means that the DNA now encodes for a different amino acid. One kind of substitution mutation is called a point mutation, that occurs which a single nucleotide is substituted.

To learn more about  missense mutation , here

brainly.com/question/9598940

#SPJ4

Each of the following would cause an increase in blood pressure except inhibitor of angiotensin II. So option c is correct.

Angiotensin II is a potent vasoconstrictor, which means it causes the walls of the arteries to narrow, leading to an increase in blood pressure. Inhibitors of this hormone, such as ACE inhibitors and ARBs, work by blocking its action and preventing it from constricting the arteries, leading to a decrease in blood pressure.

Blood pressure is a measure of the amount of force exerted against the walls of the arteries as blood flows through them. It is an important indicator of cardiovascular health as it can affect the function of various organs in the body. The most common causes of an increase in blood pressure include an increase in aldosterone, increase in peripheral resistance, inhibition of angiotensin II, and increase in blood volume.

One of the factors that would cause an increase in blood pressure is an increase in aldosterone. Aldosterone is a hormone produced by the adrenal glands that helps regulate the balance of fluids in the body. It acts on the kidneys to increase the reabsorption of sodium and the excretion of potassium. This causes an increase in blood volume, which in turn leads to an increase in blood pressure, specifically in the systolic pressure.

Learn more about angiotensin II at : https://brainly.com/question/13397581

#SPJ4

Answer:

- An individual has two set of alleles for each trait because humans are diploid (two set of chromosomes).

Explanation:

Humans are DIPLOID in nature, meaning that they have two sets of each chromosome. Chromosomes contains genes, which come in different forms or versions called ALLELES. Since there are a pair of each chromosome, then there are two genes per chromosome. Hence, two possible forms of genes (alleles) can exist for each gene. That is, every gene will have two copies.

The alleles of each gene on a chromosome comes from each of the parents of an individual. For example, a human contains 23 pairs of chromosomes. Each pair of chromosome comes from the father and mother.

Answer:

Explanation:

It is important to note that alleles can be dominant, recessive, or codominant to each other, leading to variations we see in different organisms and traits. For example, how we can differentiate people by their eye color, blood group, hair color, all show that an allele is a specific form of a gene.

An individual has the number of alleles for a trait they do because each cell needs only certain genes to be active or activated in order to function genetically and since gene influence the way cells functions, so for each trait, there are two alleles per gene making an individual having two identical alleles of a particular gene or genes when the two alleles are the same. While having two different alleles of a particular gene or genes, when the two alleles are different. This is so important as the alleles affect the expression (phenotype) of a particular trait.

Few trees should be left standing, and the landowner should let nature take its course.

A forest can quickly undergo organic regeneration through the growth of grass and herbs. By allowing deforested areas to remain unattended for a long time, the regrowth of forests can happen spontaneously and without the help of humans.

Old stands must be left alone or have had afforestation rehabilitation and been given time to mature to the point of generating seeds in order for natural regeneration to occur. The majority of Central and Eastern European nations as well as Scandinavian nations are like this.

to know more about natural resources here:

brainly.com/question/13954163

#SPJ1

Joe's reading on the orange scale shows an example of the scientific law of mass conversion.

The law of mass conservation is a law that states that mass is eternal. the law of conservation of mass states that matter or mass cannot be created or destroyed but can be changed into other forms such as liquids, gases, as well as solids.

For example, when someone burns wood. The mass of burning wood is not destroyed. However, it changes form to charcoal, ash, and smoke with the same total mass.

Likewise, what Joe did when he read the mass scale of the orange before and after it was cut, the mass did not change.

This question is optional:

Learn more about the law of mass conservation at https://brainly.com/question/1992248

#SPJ4

The enzyme is made up of a protein structure and binds to its substrate, which is often a specific molecule that is necessary for the enzyme’s function. The insecticide molecule is similar in structure to the substrate, but is much more powerful.

The insecticide molecule is a competitive inhibitor, meaning that it binds to the same site on the enzyme as the substrate does, preventing the substrate from binding to the enzyme and, in turn, preventing the enzyme from catalyzing its reaction.

The structure of the enzyme-substrate complex and the insecticide-enzyme complex are similar, with the insecticide molecule fitting into the active site of the enzyme, forming a strong bond with the enzyme and preventing the substrate from binding to its active site. The insecticide molecule has a higher affinity for the enzyme than the substrate, which is why it is able to block the enzyme from catalyzing its reaction and, ultimately, cause the death of the farm worker.

To learn more about enzyme visit:

https://brainly.com/question/17320375

#SPJ4

Vegetarians and vegans who want to gain all the essential amino acids can combine two or more plant proteins.

In order to meet their daily requirements of essential amino acids, vegetarians can eat a variety of meals. Excellent sources of those amino acids are grains, peanut butter, legumes, almonds, pumpkin seeds, and legumes. The amino acids needed by the body include tryptophan, histidine, isoleucine, lysine, leucine, methionine, threonine, valine, and phenylalanine. One food that has all of these amino acids is quinoa. For those who don't consume meat, fish, or dairy items, pulses are crucial. Eggs and meat substitutes such as tofu, textured vegetable protein, Quorn, and mycoprotein are other non-dairy sources of protein. To receive their protein, vegetarians should eat plant-based foods such grains, nuts, seeds, legumes, and soy products. Eggs and dairy products are good sources of protein for lacto-ovo-vegetarians.

Learn more about vegans at

https://brainly.com/question/13212191?referrer=searchResults

#SPJ4

Answer: The glass pane absorbs and re-radiates all of the infrared photons. The glass pane absorbs all invisible photons as well as visible photons. The glass pane transmits all invisible photons as well as visible photons.

Hyperventilation decreases the respiratory rate by decreasing the levels of carbon dioxide in the blood, which leads to a decrease in the drive to breathe.

The number of breaths you take each minute is referred to as your respiratory rate. Adults typically breathe 12 to 20 times per minute while at rest. When resting, an abnormal respiration rate is one that is less than 12 or greater than 25 breaths per minute.

Hyperventilation leads to a decrease in the drive to breathe. This is because the primary stimulus for breathing is the buildup of carbon dioxide in the body. When carbon dioxide levels drop, the body's natural drive to breathe also decreases, resulting in a slower respiratory rate.

Learn more about respiratory rate on:

https://brainly.com/question/3246071

#SPJ1

A bicameral system describes a government that has a two-house legislative system, such as the House of Representatives and the Senate.

A bicameral legislature is a type of legislature that is composed of two independent legislatures, chambers, or houses. Unicameralism, in which all members discuss and vote as a single body, is distinct from bicameralism. By 2022, only around 60% of national legislatures will be unicameral, compared to about 40% of bicameral legislatures.

The techniques used to elect or choose the members of the two chambers sometimes varied from jurisdiction to jurisdiction. This frequently results in the membership of the two chambers being significantly different.

To learn more about bicameral legislature please visit here:

https://brainly.com/question/20295264

#SPJ4

Answer: d. The sparrow population decreased because of habitat destruction.

Explanation:

You included no graph but this should be the correct answer.

Habitat loss is one of the leading ways that an animal can go extinct. This happens because the animal has to go to other habitats which might be too dangerous or they eat less because food is not as available as it was in the previous habitat. Habitat loss therefore reduces the population of animals.

This will be no different for the sparrow population here. The large shopping mall has taken the land of the sparrow and now the sparrows will see their numbers decline as time goes on due to a lack of habitat.

Answer:

b. 50% chance of yellow skin

Explanation:

The likelihood that their kid will have yellow skin depends on the genetic makeup of both Patterson and Petunia. Patterson has the genotype Pp, which means he has one dominant allele for pink body color and one recessive allele for yellow body color. Petunia, on the other hand, has the genotype pp, which means she is homozygous recessive for yellow body color.

When they have children, each parent will contribute one of their alleles to their offspring. The offspring will have a 50% chance of inheriting the recessive allele for yellow body color from Patterson and a 50% chance of inheriting the recessive allele for yellow body color from Petunia. Therefore, the likelihood that their kid will have yellow skin is 50%.

Each gamete has a unique DNA set because of recombination and independent assortment during meiosis. The resultant zygote has a special set of genes as a result.

A diploid cell, or homolog, the first stage of meiosis, has two copies of each chromosome. Each homolog now consists of two identical sister chromatids as a result of the cell's first DNA replication process.

Then, through homologous recombination, each set of homologs pairs with one another and exchanges genetic material, frequently resulting in physical connections (crossovers) between the homologs. The spindle machinery segregates the homologs into distinct daughter cells during the first meiotic division. The cells then move directly to a second division without a round of DNA replication in between.

Learn more about meiosis to visit this link

https://brainly.com/question/29383386

#SPJ4

The sin of sexual activity before marriage is often referred to as "fornication."

This term is used in many religious traditions, including Christianity and Islam, to refer to sexual activity between two individuals who are not married to each other.

Some other traditions may use different terms to describe this behavior, such as "premarital sex" or "adultery." It's worth noting that the concept of what constitutes a sin or immoral behavior around sexuality and sexual behavior can vary greatly across different religious and cultural traditions and belief systems.

It is important to note that this concept is based on religious and moral beliefs, and some people may have different views on it.

To learn more about fornication at

https://brainly.com/question/13744032?referrer=searchResults

#SPJ4