Viruses are likely to get mutations due to the fast reproduction cycle, this can lead to different replication mutations. the rate of mutations induced by the DNA polymerase is 1/100,000, it is low, but due to the fast spread of the viruses, it could induce some changes.
But one of the main characteristics of the Delta variant is its ability to evade the immune system, so I would say that the mutations that led to this variable were the environmental factors, because it adapted to be more contagious and also to be able to spread easily.
But to give the right answer it is necessary to look into the specific mutations this variable has in regard to the ones that come before.
Absolute age is the actual age of a rock. Could it be possible to determine the absoluteage of any of the outcrops given? Explain in detail (which outcrops, which layers, why orwhy not)
To determine the age of a rock, we depend on that the layers of sedimentation were observable, and separated one from the other.
Having this in mind, we can say that all of the outcrops being able to determine its age, are the ones in which we can appreciate those layers clearly, and not that where layers overlap ones with others.
I need help with question 5 this is non graded
We have that T is the allele for tall, while t is the allele for short height. If two parents, both with Tt genotypes, have offspring, as we can see in the Punnet square, the descendants' phenotypes will be 3 tall, and 1 short, as you already had in the question.
What is an example of people changing the way water flows
Answer: A dam
Explanation:
A dam is an example of people changing the way water flows.
What role do totipotent cells play in the development of an animal?
A. They produce proteins for an organism's growth and survival.
B. They can become any type of cell in the body or in the placenta or
umbilical cord.
C. They work together to perform distinct functions in the animal.
D. They produce the three germ layers of an embryo.
Totipotent cells play a role in the development of an animal since they have the ability to differentiate into any type of cell in the body, the placenta, or the umbilical cord.
What do totipotent animal cells do?According to a looser definition, totipotency is the capacity of a cell to differentiate into any type of body cell as well as any cell helping a mammal develop, such as the placenta and extraembryonic membranes.
What in biology are totipotent cells?Totipotent. a human created from an isolated cell that is fertile as an adult. When a single cell is introduced into an empty zona pellucida or grows to the blastocyst stage in culture, it is then transferred to a uterus and develops into a fertile adult. Zygotes.
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Answer:
the answer is b
Explanation:
source trust me bro
Which of the following is an Incorrect match?a. larynx - containsvocal cordsb. pharynx - connects nasal and oralcavity to larynxc. sinuses - remove dust particles d. glottis - opening to the larynx
- The larynx is a part of the respiratory system, it connects to the pharynx and the trachea, ait allows the air to pass from the throat through the trachea directly to the lungs.
It is in this structure where the vocal cords are found.
- The pharynx, also called throat, connects the mouth to the esophagus and also contributes to breathing and phonation because it connects the nasal cavity, the Eustachian tubes, and the larynx with the buccal cavity.
- The function of the sinuses is to increase the contact surface of the air with the epithelium of the nasal cavity, which allows it to humidify and warm the inhaled air. They also play a role in phonation.
These structures help reduce the relative mass of the skull, thus decreasing its weight, provide "shock resistance" in case of injury, and isolate sensitive structures from rapid temperature changes occurred during inhalation.
- The glottis is the space between the pharynx and larynx.
The only match that is incorrect is c. sinuses - remove dust particles
Why are most plants green?Question 1 options:There are a mixture of pigments in leaves whose colors combine to appear green. They are green to match nature and to be best camouflaged against predatorsThey contain the pigment chlorophyll which reflects green light, making the plants appear green.
Within the plant's chloroplasts, there is a pigment called chlorophyll. Chlorophyll absorbs all wavelengths of white light except for the green wavelength, the pigment reflects this color and this is why it has a green color. The green color of the plants is given by the green color of this pigment.
The correct option is
"They contain the pigment chlorophyll which reflects green light, making the plants appear green. "
How do lungs reciecve clear oxygen when a person is climbing the mountains
Describe the structure of the endoplasmic reticulum.
Endoplasmic reticulum is a membrane system forming a series of sacs in eukaryotic cells. It has many functions, including the synthesis and transport of proteins. There are two types of endoplasmic reticulum with different structures, as follows:
1) Rough endoplasmic reticulum - its sacs are convoluted but flat, contiguous with the nuclear membrane. Its outer surface is studded with ribosomes, which gives it the rough appearance.
2) Smooth endoplasmic reticulum - its sacs are tube-like structures and they are located near the cell periphery. Sometimes these tubules branch, forming a reticular network wit.
Pulmonary edema and impaired ventilation occur during? A. septic shock. B. neurogenic shock. C. cardiogenic shock. D. anaphylactic shock.
Pulmonary edema and impaired ventilation occur during cardiogenic shock.
Cardiogenic is form of pulmonary edema or pressure that induced the production of a non-inflammatory type of edema .During cardiogenic shock oxygen-rich blood reaching the brain and other vital organs, your blood pressure drops, and your pulse slows.
Cardiogenic shock and pulmonary edema are life-threatening conditions that should be treated as medical emergencies. The most effected areas left ventricles (LV) dysfunction that leads to pulmonary congestion and systemic hypoperfusion.
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Meanwhile I will post the next question: A woman with blood type A and a man with blood type B have 3 children one each with blood types A,B and O . What are the genotypes of the parents
AO - genotype of mother
BO - genotype of father
The cross of AO and BO will result to AB, BO, AO, and OO.
The phenotypes of the parents are the following:
AO - A - mother
BO - B - father
5. Using organisms from the food web for your ecosystem, describe examples of the following: a. A symbiotic relationship: b. A predator-prey relationship: c. Competition: d. Limiting factors that may affect the survival of the organisms: e. Density dependent and independent factors that may affect the survival of the organisms:Ponds are a type of freshwater ecosystem that has shallow and slow-moving water (is lentic), and, because it's shallow, light can reach the bottom of it.Some organisms that we can find living in a pond are the following:Water liliesFrogsTurtlesFishGeeseDragonfliesAlgaeCyanobacteriaDucksWater snailDuck potatoEarthwormsMosquitosPond skaterNewtsMosquito fern/fairy mossDuckweedsWatersnakeSalamandersWater beetleProducers: water lilies, algae, cyanobacteria, duck potato, mosquito fern/fairy moss, and duckweedsPrimary Consumers: ducks, geese, fish, water snails, turtles, earthworms, frogs, pond skaters, and water beetles.Secondary and tertiary consumers: ducks, geese, fish, frogs, dragonflies, water beetles, newts, water snakes, and salamanders. 4. Producers include water lilies and duck potato. Consumers include ducks, frogs, pond skaters, water beetles, water snails, fish, water beetles, water scorpion, dragonflies, mosquito, duckling, leech, newt, and tadpole.
Step 1.
Outline the food web given by the question:
Producers: water lilies, algae, cyanobacteria, duck potato, fern/fairy moss, and duckweeds;
Primary Consumers: ducks, geese, fish, water snails, turtles, earthworms, frogs, pond skaters, and water beetles;
Secondary and tertiary consumers: ducks, geese, fish, frogs, dragonflies, water beetles, newts, water snakes, and salamanders.
Step 2.
a. A symbiotic relationship is a close ecological relationshp between two species. being a exmaple of a symbiotic relationship with the food web present in the question the relation between cyanobacteria and algae, both can work together to make photosynthesis since the species are bacteria with algae traits;
b. The Ducks in the food chain are predators, while the fish the prey, being a relationship of predator-prey inside the ecosystem used as example;
c. The frogs and dragonflies have a competition to eat the mosquitos in the pond;
d. Some of the limiting factors for that ecosystem are the water temperature and oxygen, the number of producers, and the human activities that can affect the body of water in the pond (pollution);
e. The dependent factor are related to biotic factors such as food, predation, disease, migration, and parasitism, while the independent factors are related to environment (abiotic) such as climate and degradation of the water body.
if flies that are heterozygous for all three traits are crossed, what proportion of the offspring would you expect to be heterozygous for all three traits?
Answer:
The natural resistance of plant to diseases is attributed to _____
Answer:
12.50%
Explanation:
Let's consider that the heterozygous flies have genotype AaBbCc. If two flies that are heterozygous for all three traits are crossed together, it results in 12.50% offsprings that are also heterozygous for all three traits.
Which evidence suggests that flowering plants and pollinators have complimentary adaptations?A. Butterfly wings are made of many ovelapping scales, not stretched skin.B. Plants with long-tube flowers attract hummingbirds with long, neddle-like beaks.C. Hummingbirds must feed frequently on plant nectar to have enough energy.D. Bees tend to avoid red flowers.
Complimentary adaptations refer to traits that appear to be designed to specifically interact with another trait of a different species. In this case, option B describes this scenario, plants with long tube flowers attract hummingbirds with long, neddle-like beaks. The long beak of the bird is ideal to get the nectar from the long tube flowers.
Use the information and chart to answer the following question. The table shows different types of fossils and what continents they were found on.
Based on the chart, which of the following arguments BEST explains the data?
A.) Student 2 claims the same fossils found on multiple continents supports the Continental Drift Theory.
B.)Student 3 claims there is only enough evidence for fern fossils to support the Continental Drift Theory support the Continental Drift Theory.
C.) Student 1 claims there is no relationship between fossils to support the Continental Drift Theory.
D.)Student 4 claims there is not enough fossil evidence to support the Continental Drift Theory.
SC61.14.214. The hierarchy of the body is shown belowWhich of the following statements is NOT part of the cell theoryA Cells are made of molecules,Bells make up all organismsC.Cells are the basic unit of lifeD. Cells come from pre-existing cell
The correct answer is A. Cells are made of molecules. It is not part of the cell theory.
Discuss assumptions about men and women, class status, religion, and race.
Social inequality is typically thought of as the absence of result equality, but it may also be thought of as the absence of opportunity equality. Race, gender, class, and religion are interrelated identity characteristics that have an impact on many facets of life in the United States.
These social institutions might become more important at any point in a person's life, and everyone is affected by them.
Gender, on the other hand, is an identity that is independent of a person's biological sex. Girls and women are frequently expected to behave nicely, dress in stereotypically feminine ways, and provide for others. Typically, men are expected to be strong, brave, and competitive.
In society, class refers to the division of people into groups based on their socioeconomic circumstances. Based on variables like wealth, occupation, or education, the grouping is stratified. Therefore, it stands to reason that the higher classes are more powerful and influential than the lower classes.
Religion supports and encourages social conflict and inequity. It causes animosity and violence caused by religious differences and aids in persuading the impoverished to accept their position in life.
The shared and hereditary physical characteristics of a group are typically used to identify a person's race, making the definition of race complex.
As a result, it is clear that race, gender, class, and religion are interconnected identity qualities that influence many aspects of American life.
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Blood type in humans contains multiple alleles.A male with type A blood and the genotype AO mates with a female with type B blood and thegenotype BO. What are the possible blood types of their offspring?
To determine the possible blood types of the offspring you have to create a Punnet square crossing the genotypes of the parents.
The male parent has a blood type A, his genotype is AO, which means that his gametes can carry the alleles "A" or "O"
The female parent has a blood type B, his genotype is BO, which means that her gametes can carry the alleles "B" or "O"
Cross the alleles of the parents to determine the possible genotypes of their offspring:
The genotypes of the offspring and their phenotypes are:
AB → Blood type AB
AO → Blood type A
BO → Blood type B
OO → Blood type O
All of the given options are possible blood types of the offspring so the correct answer is All of these.
Which is not a receptor that can be found in the skin?A) ThermoreceptorB) PhotoreceptorC) Pain receptorD) Mechanoreseprtor
Solution:
Remember that a photoreceptor cell is a specialized type of neuroepithelial cell found in the retina that is capable of visual phototransduction. This means, that the correct answer is:
A receptor that cannot be found in the skin is:
B) Photoreceptor
Compared to the climate at location A, the climate at location D isA) cooler and drierB) cooler and wetterC) warmer and drierD) warmer and wetter
According to the graphics, climate at location D is cooler and drier (option A) than location A as it presents lower temperatures and less precipitations.
On an evolutionary time-scale, two species that share a common ancestor from around 1 million years in the past are:a. Very closely relatedb. 125,643rd cousins 13,665 times removedc. very distant relatived. not related
They are very closely related because they share a common ancestor even if a million years have gone by. We have a so-called divergent evolution in which species share a common ancestor. Through times, these species may have differences when it comes to their physical attributes because of their adaptation to their environment, but their inward structure are quite similar. These organisms may develop homologou structures but do not have similar functions.
Making concepts personally relevant to an individual helps to learn them. Below are several concepts from your reading. For each concept, give one example from your daily life and explain why your example fits the concept listed. Each concept should be a minimum of 50 words with citations to support your examples. List all references at the end of the list in Example:Sensation – I like listening to my music before going to sleep, but if my parents hear my music after 10 pm, I get in trouble. If my music is below their absolute threshold, then I won’t get in trouble, because they won’t hear it. It is really hard to keep it below their absolute thresholds because it seems that even the faintest amount of sound coming from my room is detectable. In this example, the absolute threshold is the lowest amount of volume that they can detect up to 50% of the time (Grison, Absolute Threshold Can ya make a long sentence of absolute threshold?
An absolute threshold is the smallest level of stimulus that can be detected, usually defined as at least half the time. The term is often used in neuroscience and experimental research and can be applied to any stimulus that can be detected by the human senses including sound, touch, taste, sight, and smell.
For example, in an experiment on sound detention, researchers may present a sound with varying levels of volume. The smallest level that a participant is able to hear is the absolute threshold.
However, it is important to note that at such low levels, participants may only detect the stimulus part of the time. Because of this, the absolute threshold is usually defined as the smallest level of a stimulus that a person is able to detect 50% of the time.
For hearing, the absolute threshold refers to the smallest level of a tone that can be detected by normal hearing when there are no other interfering sounds present. An example of this might be measured at what levels participants can detect the ticking sound of a clock.
Young children generally have a lower absolute threshold for sounds since the ability to detect sounds at the lowest and highest ranges tends to decrease with age.
For vision, the absolute threshold refers to the smallest level of light that a participant can detect. Determining the absolute threshold for vision might involve measuring the distance at which a participant can detect the presence of a candle flame in the dark.
For odors, the absolute threshold involves the smallest concentration that a participant is able to smell. An example of this would be to measure the smallest amount of perfume that a subject is able to smell in a large room.
The amount of force required for you to detect the feeling of a feather lightly brushing your arm is an example of the absolute threshold for touch. When it comes to touch, the level of stimulation required to detect the stimulus can vary dramatically depending upon the part of the body that is being touched.
What is the purpose ofthis type of division in mitosis and meiosis
Answer:
Purpose of mitosis:
Mitosis plays a significant role in cell repair.
Purpose of meiosis:
The main purpose of meiosis is the production of gametes during sexual reproduction.
Meiosis tends to increase genetic variability in the population.
Explanation:
Hopefully it helps!
What does the graph in figure 1 illustrate
18. What is the correct percentage amount for baryonic matter, dark matter,
and dark energy in the universe?
68% Baryonic Matter, 5% Dark Matter, 27% Dark Energy
95% Baryonic Matter, 2% Dark Matter, 3% Dark Energy
5% Baryonic Matter, 27% Dark Matter, 68% Dark Energy
0% Baryonic Matter, 0% Dark Matter, 100% Dark Energy
According to the scientists the correct percentage amount is about ~68% dark energy, ~27% dark matter, ~5% baryonic matter.
What is Dark Energy, Dark Matter and Baryonic Matter?
A hypothesized energy known as dark energy behaves like the antithesis of gravity by exerting a negative, repellent pressure. It has been proposed to explain the observable characteristics of far-off type Ia supernovae, which reveal an accelerated phase of the universe's expansion.Considered to make up about 85% of the universe's matter, dark matter is a hypothesized type of matter. The reason why dark matter is referred to be "dark" is because it does not appear to interact with the electromagnetic field. As a result, it cannot be detected because it does not emit, absorb, or reflect electromagnetic radiation.Dark matter made of baryons is referred to as baryonic dark matter in cosmology and astronomy. It is unlikely that all of the dark matter in the universe is baryonic. Baryonic dark matter is invisible through its radiation emissions, but its presence can be inferred from the gravitational effects on visible matter.
Scientists have calculated the universe's makeup as follows: 68% dark energy, 27% dark matter, and 5% normal matter. They did this by fitting a theoretical model of the universe's composition to the total set of cosmological observations.
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In humans, the allele for a widow's peak is dominant to the allele for a straight hairline. In a family with three children, two of the children have a straight hairline and one child has a widow's peak. Which of the following is possible? (please i will give brainliest)
Both parents are heterozygous.
Both parents are homozygous for a widow's peak.
Both parents are homozygous for a straight hairline.
One parent is homozygous for a straight hairline, and the other is heterozygous.
The correct answer is that one of the parents is homozygous while the other one is heterozygous.
Widow's peak is a dominant trait which is observed even when a single dominant allele responsible for this characteristic is present in an individual. A widow's peak is used to refer to the hairline of a person which is shaped like the letter 'V' progressing downwards towards the central portion of the forehead.
However, the allele for straight hairline is recessive which means that in the given case one parent must be homozygous, i.e. contain similar alleles (recessive), while the other one with a widow's peak is heterozygous.
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What is ethology (1) the development of animals that have been trained to live with humans(2) animals that are no longer able to live in the wild(3) The study of animal behavior particularly in animals’ natural environment(4) breeding of animals that live in the wild(5) breeding of dangerous animals that cannot be trained
Ethology is a branch of biology that studies the animal behavior of species in their natural environment. This can be understood or approached under different circumstances, such as how a particular animal species behaves under
As part of an exam, you are given a powder to analyze. When you perform various tests, youfind that it contains a single chemical that changes the pH of neutral water to a pH of 13. Youwould conclude that the chemical is aa. weak acid.b. neutral.c. weak base.d. strong acid.e. strong base.
To answer this we need to remember the pH scale, as lower is the numbe the compound is more acid, mmeanwhile, if the number ishigher wweare talking of a base, it ranges from 10to 14, being l0 the most acid, 7 neutral and 14 strongest base. Also, we must not forget that the pH scale is on a logarithmic scale (base 10) which means that each level is 10 timeshhigherthatn the previous level, so if we have a 13 pH level we are talking of a very strong base, therefore, the correct answer is option e.
Write a short paragraph about keeping your promises use future tense of verbs in your sentence. Using topic of biology
Biologists from all around the world will be employed in a range of contexts in the future, including university labs, research facilities, the pharmaceutical and food industries, agriculture, hospitals, and other areas.
Because biology is so essential to our own existence, there will also be jobs for those who are interested in influencing the direction of science in the future.
We'll develop vaccines to stop the spread of diseases, extending the average human lifespan. We will be able to stop global warming and save the planet's future.
Exciting medical developments are taking place, and in the future, we might be able to have our medications customized for us depending on our DNA and environment to ensure that we receive the best effective therapies.
We will be able to produce cleaner, greener energy that is more sustainable than fossil fuels by developing new biofuels from non-food crops, waste biomass, algae, and microorganisms.
We can therefore conclude that many aspects of human existence will improve as a result of biology in the future.
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if a diploid cell contains 14 pairs of chromosomes for a total of 2n=28, how many chromosomes will be in the resulting products of cellular division if the cell undergoes: mitosis?
meiosis?
The number of chromosomes that will be in the resulting products of cellular division if the cell undergoes mitosis is 28 and 14 for meiosis.
What is mitosis?Mitosis is the division of a cell nucleus in which the genome is copied and separated into two identical halves. It is normally followed by cell division.
Meiosis, on the other hand, is a cell division of a diploid cell into four haploid cells, which develop to produce gametes.
Mitosis is also called duplication division because the number of chromosomes in the parent cell does not change in the daughter cells. However, in meiosis, the chromosome number is reduced by half in the daughter cells.
According to this question, a diploid cell contains 14 pairs of chromosomes for a total of 2n = 28 chromosomes. This means that mitosis will result in 28 chromosomes while meiosis will result in 14 chromosomes.
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In order for lactose to be digested to produce the two monomers that can be digested bythe human body, the molecule has to undergo a hydrolysis reaction. During this processwhat occurs to this disaccharide?
Lactose is a disaccharide, which means that it is formed by two carbohydrate or sugar monomers. In this case, the two monomers that form lactose are glucose and galactose.
When lactose is digested by the human body, what happens is that the bond between the monomers is broken, releasing glucose and galactose which can be absorbed by the human body.