7. Explain why complementary base pairing is necessary to maintain the double helix shape of
the DNA molecule.

Answer:

Complementary

Answer:

The hypothalamus triggers the sympathetic nervous system after receiving a distress signal from the amygdala by communicating with the adrenal glands via the autonomic nervous system. In response, these glands release the hormone epinephrine, also referred to as adrenaline, into the bloodstream.

Answer: The fight-flight response is a physiological reaction that occurs in response to a perceived threat or danger. It is a complex process that involves the nervous system and the endocrine system, working together to maintain homeostasis in the body.

The nervous system detects the threat and initiates the response. When a threat is detected, the sympathetic nervous system is activated. This results in the release of adrenaline and noradrenaline from the adrenal glands, which are part of the endocrine system. These hormones help prepare the body for action by increasing heart rate, increasing blood pressure, and increasing blood glucose levels.

At the same time, the hypothalamus in the brain is also activated. This triggers the release of corticotropin-releasing hormone (CRH), which in turn stimulates the pituitary gland to release adrenocorticotropic hormone (ACTH). ACTH stimulates the adrenal cortex to release cortisol, which helps to maintain blood glucose levels and promote the mobilization of energy stores.

Together, the nervous system and the endocrine system work to coordinate the fight-flight response. The sympathetic nervous system increases heart rate and blood pressure, while the adrenal glands release adrenaline and noradrenaline to help prepare the body for action. At the same time, the hypothalamus and pituitary gland release CRH and ACTH, respectively, which stimulate the release of cortisol to maintain blood glucose levels and promote energy mobilization.

Once the perceived threat has passed, the parasympathetic nervous system is activated to help return the body to its normal state, and the endocrine system stops releasing stress hormones. This coordinated response by the nervous system and the endocrine system helps to maintain homeostasis in the body during times of stress and danger.

Explanation:

Answer:

A. The difference between relative dating and absolute dating is that relative dating determines the order in which events occurred, whereas absolute dating gives a numerical age for an event or object.

B. A half-life is the amount of time it takes for half of the original radioactive material to decay into a stable daughter isotope. This means that after one half-life, half of the original radioactive material will remain, and after two half-lives, one quarter of the original radioactive material will remain, and so on.

C. Scientists use radiometric dating to figure out the age of a substance by measuring the ratio of radioactive isotopes to stable daughter isotopes in a sample. By knowing the half-life of the radioactive isotope and measuring the ratio of the two isotopes in a sample, scientists can calculate how many half-lives have occurred and thus determine the age of the sample. This technique is commonly used to date rocks and minerals, but it can also be used to date fossils and other organic materials that contain radioactive isotopes.

Explanation:

The correct response is a. some of its members must be better suited to the environment than others.

A population is a collection of creatures belonging to the same species that coexist in the same region and have the capacity to reproduce with one another and give birth to living offspring. Populations can be examined at several levels of organization, including the molecular, cellular, individual, and ecological levels. Their sizes can range from a few to millions or billions of individuals.

Natural selection is an evolutionary phenomenon that takes place when certain people in a group have certain qualities that give them a reproductive or survival advantage, enabling them to have more offspring than other individuals. As a result of people with the beneficial qualities having a higher chance of surviving and passing on their genes, the traits may eventually become more prevalent in the population. Because some people must be more fitted to their environment than others, there must be variation in the population for natural selection to take place.

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If we have tall and luxuriant trees then it would follow from such that we are referring to the tropical rainforest.

The ecosystem has to do with a zone that is composed of the living and the non living parts.

There are various kinds of ecosystems that we have and we know that the particular kind of the ecosystem that is under consideration would depend on the features that we can see.

Unfortunately, the images are not shown so we can't know the kind of ecosystems that we are dealing with. If we had tall luxuriant  trees for instance, we can know that we are dealing with a tropical rain forest.

In the grassland ecosystem, there is an abundance of tall grasses which often serve as food for herbivores.

In the marshland ecosystem, there is the abundance of plants that withstand changes in salinity.

Forest ecosystems are characterized by tall trees and a wide range of plant and animal life. They are essential for the production of oxygen and act as a natural carbon sink, reducing greenhouse gases in the atmosphere. Forests are also important for water regulation and soil conservation.

Wetland ecosystems are characterized by standing water or waterlogged soil and are home to a diverse range of plant and animal life, including frogs, alligators, and cattails. Wetlands are important for filtering water, controlling floods, and providing habitat for migratory birds.

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Answer:

Artificial selection because offspring with desirable traits are produced

Explanation:

hope it helps

The fact that this novel toxin inhibits Na+ channels and may have detrimental effects on organisms should worry scientists greatly.If it is discharged into the atmosphere, it may interfere with cells' ability to function normally, which could have a detrimental effect on one's health.

Generally, organisms are grouped based on their specific characteristics.The classification of an organism frequently provides useful information about its evolutionary history and the other animals to which it is related.

It offers fresh understanding of the connection of humans and nature, which is essential for food production, preserving fresh water and air, and preserving biodiversity in the face of climate change.

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6.25% is the probability .

What does a probability simple definition entail?

A probability is a number that expresses the possibility or likelihood that a specific event will take place. Both proportions between 0 and 1 and percentages between 0% and 100% can be used to describe probabilities.

                          Probability is a measure of the likelihood that an event will occur or the likelihood that something will happen. Probability is the measure of how likely it is that a coin will land heads up after being tossed into the air.

0.5 • 0.5 • 0.5 • 0.5 = 0.0625 or 6.25%

There’s a 0.5 chance of getting a y allele from parent 1, 0.5 chance of getting an r allele from parent 1, 0.5 chance of getting a y allele from parent 2, and 0.5 chance of getting an r allele from parent 2.

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Incomplete dominance describes a complex pattern of genetics that results in a blended expression of two alleles.

What is Codominance?

Codominance is a type of genetic inheritance where both alleles of a gene pair are fully expressed in the phenotype of a heterozygous individual. This means that neither allele is dominant or recessive and both traits are expressed simultaneously without blending together.

In this pattern, neither allele is completely dominant, and the heterozygous phenotype is an intermediate blend of the two homozygous phenotypes. For example, in a flower with red and white alleles, a heterozygous individual with one red allele and one white allele may express a phenotype that is pink, a blend of the two colors. This is in contrast to codominance, where both alleles are expressed equally, or dominance, where one allele is completely dominant over the other.

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Explanation:

1. Psychoanalysis: Psychoanalysis is a type of therapy that focuses on the unconscious mind and how it affects behaviour and thought. It encourages a person to explore the emotions and experiences that may be the underlying cause of psychological issues, such as depression or anxiety. An example of someone who would benefit from this type of therapy is someone diagnosed with post-traumatic stress disorder (PTSD). 2. Humanistic Therapy: Humanistic therapy is a type of therapy that focuses on the individual's capacity for self-growth and self-determination. It emphasizes the importance of understanding the person's subjective experience and psychological needs. An example of someone who would benefit from this type of therapy is someone diagnosed with an eating disorder. 3. Systematic Desensitization: Systematic desensitization is a type of therapy that uses gradual exposure to a feared stimulus in order to reduce anxiety and other fearful responses. It is often used to help people with phobias or anxiety disorders. An example of someone who would benefit from this type of therapy is someone diagnosed with social anxiety disorder. 4. Aversive Conditioning: Aversive conditioning is a type of therapy that uses an unpleasant stimulus to decrease the likelihood of a certain behavior. It is often used to treat addiction, aggression, and other unwanted behaviors. An example of someone who would benefit from this type of therapy is someone diagnosed with an addiction disorder. 5. Cognitive Therapy: Cognitive therapy is a type of therapy that focuses on identifying and changing negative thought patterns that can lead to psychological distress. It helps to change how a person thinks and behaves in order to improve mental health and emotional well-being. An example of someone who would benefit from this type

1- weathering, transportation, and lithification.

2- temperature, pressure, and fluids.

3- Metamorphic rocks started out as some other type of rock, but have been substantially changed from their original igneous, sedimentary, or earlier metamorphic form.

Hope it answered your questions!

Answer:

True

Explanation:

Rising global sea level is a critical consequence of climate change. As ocean waters warm, they expand. Also, as air temperatures warm, water from melting ice sheets, polar ice caps, and glaciers enters into our ocean basins.

Answer:

The boiling point of water is 100°C at standard atmospheric pressure. Since the graph shows the temperature reaching 140°C, it is above the boiling point of water. Therefore, the boiling point of this substance is above 120°C.

Answer:

All species in the food webs can be distinguished into basal species (autotrophs, such as plants), intermediate species (herbivores and intermediate level carnivores, such as grasshopper and scorpion) or top predators (high level carnivores such as fox) (Figure 1). These feeding groups are referreferred to ased as trophic levels.

Explanation:

Answer:False

Explanation:

Must be buried.

Answer:

A. Increased crop growth

E. New business opportunities

Both of these options could potentially be considered benefits of climate change, although it's important to note that they come with significant drawbacks and negative consequences. While increased crop growth could potentially lead to greater food production, it could also disrupt ecosystems and lead to changes in the availability of water resources. Similarly, while new business opportunities could be created as a result of climate change mitigation efforts, these efforts are often costly and may not fully address the underlying issues that are causing climate change in the first place. Overall, it's important to consider the potential costs and benefits of climate change carefully in order to make informed decisions about how to address this global issue.

Explanation:

To determine the genotype of the parents and their children, we can use a Punnett square. We know that the daughter is colorblind, which means that she has two X chromosomes with the colorblind allele. The son has normal vision, which means that he has at least one X chromosome with the normal vision allele.

Let's use "C" to represent the normal vision allele and "c" to represent the colorblind allele.

The father's genotype could be CC or Cc, and the mother's genotype could be CC, Cc, or cc. We don't know their genotypes for sure, but we can create a Punnett square to show the possible outcomes for their children:
 | C  | c

--|----|----

C | CC | Cc

--|----|----

C | CC | Cc

--|----|----

c | Cc | cc

In this Punnett square, we see that there is a 50% chance that each child will receive a colorblind allele from the mother. The daughter received two copies of the colorblind allele (cc), while the son received one copy of the normal vision allele and one copy of the colorblind allele (Cc). This explains why the daughter is colorblind and the son has normal vision.

So, the doctor could conclude that the daughter is homozygous recessive for the colorblind allele (cc), and the son is heterozygous (Cc) for the colorblind allele.

The slow movements of tectonic plates are responsible for the formation of mountain ranges, ocean basins, and other geological features. These movements occur over long periods of time, often taking millions of years to produce significant changes. Tectonic plates move as a result of convection currents in the Earth's mantle. As plates move, they can interact with each other in several ways, such as converging, diverging, or sliding past each other along transform faults. These interactions can cause the sudden and abrupt events of earthquakes and volcanic eruptions.

Earthquakes occur when two tectonic plates suddenly slip past each other, releasing energy in the form of seismic waves that propagate through the Earth's crust. Volcanic eruptions occur when magma from the Earth's mantle rises to the surface and is released through a vent or fissure in the crust. Both earthquakes and volcanic eruptions are related to the movements of tectonic plates, and often occur in areas where plates interact.

The time period represented in the data in the interactive is relatively short, typically spanning only a few decades or centuries. During this time, the frequency of individual earthquakes or volcanic eruptions is much higher than the motion of plates. However, over longer time periods, the movements of tectonic plates can result in significant changes to the Earth's surface, including the formation of new mountains, the opening of new ocean basins, and the creation of new land masses.

In conclusion, the slow movements of tectonic plates are responsible for shaping the Earth's surface over long periods of time, while the sudden events of earthquakes and volcanic eruptions are related to the interactions of these plates. While the frequency of individual earthquakes or volcanic eruptions may be relatively high over short periods of time, they are still ultimately driven by the slower processes of plate tectonics.

Answer:

True

Explanation:

Learning requires a permanent change in a persons capability to excute motor skill as a result of practice

Answer: Kepler 452b

Explanation:

Kepler 452b is 1400 light-years from Earth, orbits its star every 385 days, and is 1.6 times the diameter of Earth.

Answer:

Kepler 452b

Kepler 452b is 1400 light-years from Earth, orbits its star every 385 days, and is 1.6 times the diameter of Earth.

This world, whose discovery was announced in 2015, is the first near-Earth-size planet that orbits around a star the size of the sun, according to NASA (opens in new tab). Kepler-452b is 60 percent larger than Earth and its parent star (Kepler-452) is 10 percent larger than the sun.

Answer:

The discovery of a layer of rock known as the K-T boundary, which separates the Cretaceous period from the Tertiary period. This layer contains high levels of iridium, a rare element that is more abundant in meteorites than in the Earth's crust. This suggests that a large meteorite impact may have occurred around the same time as the volcanic eruptions.

The presence of large-scale volcanic activity in the Deccan Traps region of India, which occurred around the same time as the extinction event. These eruptions are thought to have released massive amounts of volcanic gases into the atmosphere, which would have led to climate change and other environmental changes that could have contributed to the extinction of the dinosaurs.

Explanation:

Answer: A!

Explanation: The human liver cells work on their own functions unique to their cell type, therefore, answer A is correct

The nervous system is a complex network of cells that allows an organism to sense, process, and respond to information about its environment and its own internal state.

Subatomic particles such as ions, electrons, and photons play important roles in the transmission and processing of electrical and chemical signals in the nervous system.

Environmental factors such as exposure to pollutants and extreme weather events can have negative impacts on the nervous system, such as by impairing cognitive function, altering behavior, and increasing the risk of neurological disorders. For example, air pollution has been linked to reduced cognitive performance and increased risk of Alzheimer's disease, while heat waves and droughts have been associated with higher rates of stroke and other neurological conditions.

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Answer: Meristem

Explanation:

Meristem Is a Tissue found in Plants instead of Humans.

Answer:

Solar and wind power generation are generally considered to be clean sources of energy that do not produce air pollution.

Explanation:

Answer:

The formula for photosynthesis: CO2 + H2O → C6H12O6 + O2, provides evidence for the law of conservation of mass and energy, which states that mass and energy cannot be created or destroyed, only transformed from one form to another.

In photosynthesis, carbon dioxide and water are transformed into glucose (C6H12O6) and oxygen gas (O2) through the process of absorbing light energy. The number of atoms of each element on the reactant side of the equation must equal the number of atoms of each element on the product side of the equation in order for the equation to be balanced and thus satisfy the law of conservation of mass.

This means that the total mass of the reactants (CO2 + H2O) must equal the total mass of the products (C6H12O6 + O2), and none of the mass can be lost or gained in the process. This satisfies the law of conservation of mass.

Similarly, the energy required for photosynthesis comes from the absorbed light energy, which is transformed into chemical energy stored in the glucose molecule. The energy of the reactants (CO2 and H2O) must be equal to the energy of the products (C6H12O6 and O2), again satisfying the law of energy conservation.

Therefore, the formula for photosynthesis provides evidence for the law of conservation of mass and energy, as it demonstrates that mass and energy are conserved and transformed in a predictable way during the process of photosynthesis.

Explanation:

The chemical formula for the equilibrium reaction of photosynthesis is 6CO2+6H2OC6H12O6+6O2.

Iodine solution should be applied to the leaves. The plant's leaves in the jar without the KOH solution change colour from green to blue-black as a result of the starch in the leaves reacting with the iodine. Yet, because the plant cannot manufacture starch in the absence of carbon dioxide, the leaves of the plant in the KOH-filled jar do not change colour.

Glucose is produced during photosynthesis from sunlight, six carbon dioxide molecules, and six water molecules (C6H12O6). Glucose (C6H12O6), six water molecules, and six oxygen molecules are used in cellular respiration to produce six carbon dioxide molecules, six water molecules, and six oxygen molecules.

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Answer:

1) Read the ingredient list.

2) Look at how long the ingredient list is.

3) Pay attention to types of fats.

4) Look for "100%"

5) Consider convenience.

6) Look at the expiration date.

Answer:

D

Explanation:

because the active site can only bind one subrate to form an enzyme-subrate complex