Dr. stott is a developmental psychologist who studies how environmental influences impact gene expression without changing dna. what does she research? chromosomes heredity genome epigenetics

Answer:

Reputable digital resources must be

a) accurate

b) Authorized

Explanation:

Two characteristics which describe reputable digital resources are  

1. A reputable digital resources must be accurate – The information provided by a digital resources must be reliable and free from error else its authenticity becomes questionable.  

2. A reputable digital resources must have a authorship of its website. Thus all the information provided on the website must be referenced.  A good web source must have a contact production person.

When a person is about to approach a large animal or downed deer, it is important to be calm and to approach it slowly to prevent it from having to run and to feel scared, it is also best to approach it from behind.

The question and answer focus on the appropriate way to approach a downed deer or other large animal. The key points suggest remaining stationary until the animal isn't going to move and to consider the overall balance of the ecosystem when making decisions about the animal.

When approaching a downed deer or other large animal, it's important to proceed with utmost caution. One should first stop moving and become stationary until it's clear that the animal isn't going to move. Preserving the balance of the ecosystem and avoiding unnecessary disturbances to the animal are key.

Practices that impact the number of predators, the availability of nutrients in the soil, and the number of pests should be taken into account. Any drastic changes in these factors could indicate that indiscriminate hunting of deer or other large animals should be discouraged.

This allows for the prevention of imbalances in the food chain and the overall ecosystem.

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Ans.

Lipids are complex, organic biomolecules, that perform various functions in the body, such as membrane synthesis, energy storage, and heat insulation. Excessive deposition of fat molecules in the body, due to eating too much lipids is called as obesity.

One of the negative impact of eating too much of lipids involves strain in circulatory system, heart, and on other body organs. It can lead to various heart-related problems, such as heart attack.  

Thus, the correct answer is option). D.

Answer:

D. fat deposits put a strain on the body

The Fox Farm Experiment was designed to test a hypothesis about genetic selection and domestication, involving the selective breeding of foxes to study changes in their behavior and physical traits. This research approach is essential for testing the validity of scientific predictions and expanding our understanding of underlying biological processes.

Scientists conducting the Fox Farm Experiment were trying to prove a hypothesis, which is a proposed explanation that attempts to interpret an observation or answer a specific question about the natural world. The hypothesis in question was likely related to genetic selection and domestication, as the famous Fox Farm Experiment by Dmitri Belyaev involved selecting foxes based on their tameness to study the process of domestication and its effect on physical and behavioral traits. An experiment like this typically serves as a means to test predictions derived from a hypothesis, allowing for rigorous scientific scrutiny and the potential to refine or refute the initial proposal based on empirical evidence.

To test the hypothesis, researchers would have set up controlled experiments comparing different groups of foxes or other variables, much like comparing the number of deformed frogs in ponds with different levels of a certain chemical. A well-constructed hypothesis not only addresses the initial observation but also provides a basis for making further predictions that can be empirically validated through experimentation.

Answer:

Any terrestrial planet has highest temperature at its core and least temperature at its crust.  

Explanation:

Considering the composition of earth, there are three main layers whose composition and temperature is given as follows –  

a) Inner Core – The inner core is made up of iron and nickel and has a temperature of 7200 degree Celsius.

b) Molten Outer core – It is also made up of iron and nickel and has a temperature of 4300 degree Celsius.

c) Inner mantle – It is semi rigid and made up of silicon, oxygen, magnesium, iron, aluminum, and calcium and has a temperature of 3700 degree Celsius

d) Crust – It is made up of water, basalt and granite and has a temperature of 0 degree Celsius

Thus, looking at the composition and temperature of different layers of earth , it can be said that any terrestrial planet has highest temperature at its core and least temperature at its crust.  

Answer:

The correct answer will be option-B.

Explanation:

DNA is a molecule which acts as the genetic material of the cell. A living cell passes this genetic material to the daughter cell as it stores the information required by the cell.

The long DNA strand contains both coding and non-coding sequence in its length.  Since the coding sequence of a DNA is known as "gene" which codes for a trait of an organism as well as it controls the expression of other genes to express a particular trait.

Thus, Option-B is the correct answer.

Answer:

The given blank can be filled with occipital lobe.

Explanation:

At the posterior part of the brain occipital lobe is situated that plays an important role in the interpretation of the visual stimuli and info. The primary visual cortex is situated in the occipital lobe that interprets and attains data from the retinas of the eyes. Destruction to this lobe may result in visual issues like the incapability to determine colors, difficulty in identifying objects, and others.

The cell wall is the layer that lies outside the plasma membrane. The chemical difference between the cell walls of gram positive and gram negative bacteria are as follows-

Gram positive bacteria

Gram negative bacteria

During staining procedure the bacteria are first stained with crystal violet and then treated with the iodine to promote dye retention. After this  When gram positive bacteria are treated with alcohol (ethanol) for decolorization, the alcohol shrinks the pores of the thick peptidoglycan cell wall, which retains the crystal violet dye-iodine complex and the gram positive bacteria remains purple. However, the peptidoglycan layer of gram-negative bacteria is thin and has large pores because of which alcohol easily removes the crystal violet dye-iodine complex from the cell wall and gets easily counterstain  by safranin.

So, the rate of decolorization in gram negative bacteria is faster than the rate of decolorization in gram positive bacteria due to the presence of thin peptidoglycan layer in gram negative bacteria.

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Final answer:

The cell walls of gram positive bacteria contain thick layers of peptidoglycan and teichoic acids, retaining crystal violet dye, whereas gram negative bacteria have a thin peptidoglycan layer and an outer membrane with LPS, decolorizing faster and taking up safranin dye.

Explanation:

The major chemical differences between the cell walls of gram positive and gram negative bacteria involve the structure and composition of their cell walls, which impacts the rate of decolorization. Gram-positive bacteria have thick layers of peptidoglycan, which retain the crystal violet dye during the Gram staining procedure, making them appear purple. They also contain teichoic acids, which gram-negative bacteria lack. Conversely, gram-negative bacteria have a much thinner layer of peptidoglycan and possess an outer membrane that contains lipopolysaccharides (LPS). This outer membrane dissolves during the alcohol wash in the staining process, allowing the crystal violet dye to escape. Afterwards, these cells take up the pink dye safranin and appear pink. The presence of LPS in the outer membrane of gram-negative bacteria also gives them the ability to release endotoxins.

Answer:

b

Explanation:

The correct answer is option B, that is, water depth.  

An aquatic ecosystem refers to an ecosystem, which is found in water. There are various kinds of the aquatic ecosystem, that is, lakes, rivers, wetlands, ponds, deep oceans, and shallow seas.  

The chemical or physical components of the environment, which influences the species that are thriving in particular surroundings are known as the abiotic factors. In the case of aquatic ecosystems, the abiotic factors are the flow rate of water, the intensity of light, temperature, acidity, dissolved oxygen, salinity, and water depth.  

Of these water depth plays the most significant role in determining the characteristics of aquatic ecosystems. The intensity of sunlight and the availability of the dissolved oxygen to the species depends on the depth of water in an aquatic ecosystem.  

Reminiscing can positively affect the patient's functioning in a hospital by offering emotional comfort, enhancing social interactions, and exercising memory and cognitive function. Cognitive tasks such as the three-word recall test or reversing the monthly sequence can help exercise this.

For a patient in a hospital setting, reminiscing about their past can have various positive effects on their functioning. It can provide emotional solace, improve mood, and enhance social interactions. Moreover, reminiscing is a valuable tool to stimulate memory and cognitive function, so it could potentially help the client on certain cognitive tasks in order to slow cognitive decline.

Specific cognitive tasks, like the three-word recall test or reversing the months of the year, aim to exercise the patient's memory and cognitive ability. In the three-word recall test, a patient is asked to remember and then recall three words, such as book, clock, and shovel, after some time. Similarly, asking the patient to recite the months in reverse order helps to avoid the habitual sequence and challenges the memory and cognitive function of the patient.

In conclusion, reminiscing can play an important role in a client's cognitive maintenance and provide emotional comfort, thereby improving the overall hospital experience.

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The answer is potential. It is because chemical energy is a storage of energy that are formed in which making it or why it is considered to be potential rather than those given choices above in which doesn’t describe chemical energy.

Chemical energy is a form of potential energy. The correct option is B.

Potential energy takes the form of chemical energy. It is kept in the bonds that bind molecules and atoms together.

The chemical energy that has been stored is released during a chemical reaction. Chemical energy is used all around the world and is essential for many operations.

Batteries, biomass, oil, natural gas, and coal are a few examples of chemical energy sources. When substances go through chemical reactions, other types of energy, such thermal energy, can be created.

Thus, consequently, the appropriate response is B. Potential energy.

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Your question seems incomplete, the probable complete question is:

Chemical energy is a form of _____ energy.

A. entropic

B. potential

C. heat

D. motion

E. kinetic

An important aspect of color-blind racism is the elimination of discrimination.

Color blindness is one of the terms used by the U.S. Supreme Court in various cases involving race and social justice, particularly in the context of public education.

Racial colorblindness is a racial ideology that argues that the most effective way to eliminate discrimination is to treat people as equally as possible, regardless of their race, culture, or ethnicity.

At first blush, this belief seems not only to ignore the experiences of individuals of color but also to deny the existence of racism as long as it is ignored.

However, in the context of ongoing structural and systemic racism, racism colorblindness is often used as a way to completely disengage from discussions about race and racism.

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Final answer:

Subatomic particles such as protons, neutrons, and electrons define an atom's mass, charge, and identity. Protons and neutrons make up the atom's nucleus, with protons determining the element, while electrons orbit the nucleus, influencing how atoms interact and the properties of matter. Neutrons add stability and mass, affecting isotopes and certain behaviors.

Explanation:

To understand how subatomic particles such as protons, neutrons, and electrons affect an atom and its behavior, we must look at their roles within the atom. Protons, which have a positive charge, and neutrons, which are neutral, comprise the nucleus of an atom. This nucleus gives mass to an atom, and the number of protons specifically determines the element's identity. On the other hand, electrons are negatively charged particles that orbit the nucleus, and their number generally equals the number of protons, balancing the charge of an atom.

The behavior of electrons around the nucleus is not random but follows principles of quantum mechanics, which suggests an ordered arrangement in shells and subshells. These arrangements determine how atoms will interact with each other, leading to the formation of molecules and, subsequently, the properties of matter.

Since neutrons do not have a charge, they primarily contribute to the mass and stability of the nucleus rather than interacting with the electrons or other charged particles. However, the number of neutrons can affect the isotope of an element, which in turn can impact the atom's behavior in certain situations.

Answer:

Grains group

Explanation:

MyPyramid is a plan by the US government which has a set of recommendations to be followed for a diet and exercise and these are based on the dietary guidelines for Americans 2005. 

The MyPyramid plan is intended to make the American citizens more aware of the nutrition that they are getting and the food they are eating. 

There are a total of 7 categories in which the recommendations are made and these are: grains, vegetables, fruits, milk, meat and beans, oils, discretionary calories, and physical activity.

Out of these the pasta and bread are placed in the grains category.