EASY 7TH GRADE SCIENCE FIRST PERSON MARKED BRAINLIEST!!!!

Which information does a student need to differentiate between the speed and the velocity of a vehicle in motion

A. The rate of the motion
B. The direction of the motion
C. The change in the amount of motion
D. The amount of distance traveled during motion

The macronutrient that supplies glucose, the major energy source used by cells to fuel the body, is carbohydrates.

Carbohydrates play a vital role in providing energy to the body. When consumed, carbohydrates are broken down into glucose during digestion. Glucose is a simple sugar that serves as the primary source of fuel for cells, including brain cells, muscles, and other tissues.

Once glucose is absorbed into the bloodstream, it is transported to cells throughout the body. Inside the cells, glucose undergoes a series of metabolic reactions, particularly in the mitochondria, to produce adenosine triphosphate (ATP), which is the energy currency of cells. ATP fuels various cellular processes, such as muscle contractions, nerve impulses, and the synthesis of molecules needed for cellular functions.

Carbohydrates can be obtained from various food sources, including grains, fruits, vegetables, and dairy products. It is important to consume an adequate amount of carbohydrates in the diet to provide the necessary glucose for energy production and overall bodily functions.

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Answer:

the spread of the viral DNA

Explanation:

The difference between lysogenic and lytic cycles is that, in lysogenic cycles, the spread of the viral DNA occurs through the usual prokaryotic reproduction, whereas a lytic cycle is more immediate in that it results in many copies of the virus being created very quickly and the cell is destroyed.

Ribosome profiling and DNA footprinting are conceptually similar in that they both identify binding sites, but they differ in terms of the molecules they investigate (mRNA vs. DNA) and the specific information they provide (translation dynamics vs. protein-DNA interactions).

Ribosome profiling, also known as ribosome footprinting or Ribo-seq, is a technique used to study translation, the process by which ribosomes synthesize proteins based on the instructions encoded in mRNA (messenger RNA). It involves sequencing the mRNA fragments protected by ribosomes, providing information about the positions where ribosomes are bound and actively translating mRNA.

DNA footprinting, on the other hand, is a technique used to study DNA-protein interactions. It involves treating DNA with a nuclease that cleaves the DNA at unprotected regions. By labeling the DNA ends and visualizing the resulting fragments, researchers can identify regions of DNA that are protected from nuclease cleavage due to the binding of specific proteins.

The similarity between ribosome profiling and DNA footprinting lies in their ability to identify binding sites. Ribosome profiling identifies locations on mRNA where ribosomes are actively translating, whereas DNA footprinting identifies regions on DNA where proteins are bound and protecting the DNA from cleavage.

In both cases, the presence of a bound molecule (ribosome or protein) protects the surrounding nucleotides from enzymatic cleavage. By identifying the protected regions, researchers can infer the specific locations where ribosomes or proteins are interacting with the mRNA or DNA, respectively.

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Hii!!

The purpose of mitosis is to create two new perfectly identical cells when either there is a need to replace old or damaged cells and to reproduce asexually by making new cells. Some organisms use mitosis to replace body parts. For example starfish replace lost arms by mitosis. Some organisms such as the hydra use mitosis to produce genetically identical offspring.

There are four stages of mitosis: prophase, metaphase, anaphase and telophase.

1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres

2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell)

3) Anaphase: sister chromatids are pulled to opposite poles of the cell

4) Telophase: nuclear envelope reforms, chromosomes unfold into chromatin, cytokinesis can begin

● The order of the stages of mitosis can be remembered using the mnemonic PMAT.

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The relative centrifugal force is 990,000. By adjusting the RCF in a centrifugation process, scientists can control the separation of analytes based on their desired outcome.

(a) To calculate the relative centrifugal force (RCF) experienced by the analytes in the centrifugation machine, we can use the following formula:

RCF = (1.12 × 10^-5) × r × (rpm)^2

where r is the arm length in centimeters and rpm is the revolutions per minute of the centrifuge.

Given that the arm length is 11 cm and the rpm is 3000, we can substitute these values into the formula:

RCF = (1.12 × 10^-5) × 11 × (3000)^2

Calculating this expression, we find that the relative centrifugal force experienced by the analytes is:

RCF = 11 × 9 × 10^4 = 990,000

Therefore, the relative centrifugal force is 990,000.

(b) (i) The term relative centrifugal force (RCF) is a measure of the gravitational force experienced by particles or analytes in a centrifuge. It quantifies the acceleration applied to the analytes during centrifugation and is expressed as a multiple of the acceleration due to gravity (g). RCF is used to determine the sedimentation rate and separation efficiency of particles based on their size, shape, and density. When a centrifuge rotates, the analytes experience a centrifugal force that pushes them away from the axis of rotation. This force causes the analytes to sediment or settle at different rates depending on their physical properties. RCF is directly proportional to the square of the rotational speed (rpm) and the radius (arm length) of the centrifuge. By adjusting the RCF in a centrifugation process, scientists can control the separation of analytes based on their desired outcome. Higher RCF values lead to faster and more efficient sedimentation, enabling the separation of particles with greater resolution. Understanding RCF is crucial in optimizing centrifugation protocols for various applications, including sample preparation, cell separation, and purification techniques in molecular biology, biochemistry, and clinical diagnostics.

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From the image, there is a cycling of nutrients and minerals throughout the ecosystem as shown.

An ecosystem is a complex network of living organisms, their interactions with each other, and their physical environment. It encompasses all the biotic (living) and abiotic (non-living) components of a particular environment and the interactions among them.

The water and the air are important in the photosynthesis of the plant. The cricket feeds on the plant and the toad feeds on the cricket. When the cricket dies, the bacteria see to its decomposition(decomposers)  and  return the inorganic nutrients to the soil to be used by the plants.

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Answer:

yes but not overnight

Explanation:

A bird didn’t just evolve from a T. rex overnight, but rather the classic features of birds evolved one by one; first bipedal locomotion, then feathers, then a wishbone, then more complex feathers that look like quill-pen feathers, then wings,” Brusatte said. “The end result is a relatively seamless transition between dinosaurs and birds, so much so that you can’t just draw an easy line between these two groups.

if you could give most brainily that would help.

Answer:

individuals

Explanation:

.

Answer:

B

Explanation: The omega fats, I hope it helps

Based on the data for the 48 hour period, the effect of il-19 on fxr1 gene expression is a decrease in gene expression by about 60%. The control group had 100% gene expression while the group treated with il-19 had about 40% gene expression.

Il-19 is responsible for the decrease in fxr1 gene expression by about 60% as seen in the data collected over the 48-hour period. The control group had 100% gene expression while the group treated with il-19 had about 40% gene expression. The reduced gene expression as a result of il-19 treatment is likely due to the negative regulatory effects of Il-19 on gene expression. The reduced gene expression is not in any way associated with an increase in the level of apoptosis.

Il-19 has a negative regulatory effect on fxr1 gene expression. This results in a decreased in gene expression by about 60%. The reduced gene expression is not as a result of an increase in apoptosis.

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Enzymes in human cells tend to perform best at 37°C (option D).

Enzymes are globular proteins that catalyse a biological chemical reaction.

They are substances that act as a catalyst in living organisms, hereby, regulating the rate at which chemical reactions proceed without itself being altered in the process.

Enzymes are a linear chain of amino acids, which give rise to a three-dimensional structure. The sequence of amino acids specifies the structure, which in turn identifies the catalytic activity of the enzyme.

Enzymes are generally substrate-specific i.e. they act usually on specific substrates and at given temperatures or conditions.

Enzymes found in human cells will act effectively under the normal body temperature, which is 37°C.

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The rock type that appears to best resist weathering and erosion is option (2) Florence basalt

Basalt is a type of igneous rock that forms from cooled volcanic lava. It is composed mainly of the minerals plagioclase feldspar and pyroxene, and is typically black or dark gray in color.

Because of its high density and hard, dense mineral grains, basalt is relatively resistant to weathering and erosion. Additionally, the fine-grained texture of basalt makes it difficult for water and other erosional agents to penetrate and break down the rock.

Note that Sandstone and limestone are also relatively hard rocks, but they are composed mainly of grains of sedimentary rock and can be less resistant to weathering and erosion than basalt. Shale is a sedimentary rock that is composed mainly of clay-sized particles and can be relatively easy to erode.

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A complex assemblage of animals, plants, and their environment through which materials and energy move is known as ecosystem.

All the organisms that live in an ecosystem are present, along with their physical surroundings. Through energy flows and nutrient cycles, these biotic and abiotic components are interconnected. Plant tissue absorbs energy from the system through photosynthesis. Animals contribute significantly to the flow of matter and energy through the system by eating plants and one another as well as.

Additionally, they affect the biomass levels of the microbial and plant communities. Decomposers help to promote nutrient cycling by transforming nutrients stored in dead biomass back into a form that can be easily utilized by plants and microbes. They do this by consuming dead organic matter and releasing carbon back into the atmosphere.

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The chemical formula that represents an example of a compound is H₂SO₄.

Chemical formula is a notation indicating the number of atoms of each element present in a compound.

A chemical compound is a substance formed by the union of two or more chemical elements in a fixed ratio, the union being a chemical bond.

Since a chemical compound is made up of two or more elements chemically combined, the option that depicts a chemical compound is sulfuric acid (H₂SO₄).

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Sulfuric Acid (H2SO4) is a chemical compound made up of two hydrogen atoms, one sulfur, and four oxygen atoms.

The reason why H2SO4 carries only covalent bonds is because, in the structure, you have S-H bonds and S-O bonds one sulfur atom, and four oxygen atoms. Sulfuric acid is a powerful acid, soluble in water, very polar, and an outstanding solvent. Its applications involve the production of fertilizers and detergents. Sulfuric acid (H2SO4) is a strong acid with hygroscopic and oxidizing things. Sulfuric Acid is a mineral acid with the chemical formula H2SO4.

H2SO4 is an ionic compound but it has covalent bonds. Therefore from the above ending, we can easily conclude that Sulphuric acid has covalent bonds but it ionizes readily building it a very strong acid.

So we can conclude that Sulphuric acid holds covalent and co-ordinate bonds.

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The statement: "It is a component of blood"  is true for lymph.

What do you mean by Lymph?

Lymph is a clear, slightly yellowish fluid that circulates throughout the body. It is an important part of the body's immune system, carrying white blood cells and other substances to fight infection and disease. The lymphatic system is composed of lymph vessels, lymph nodes, and organs such as the spleen and thymus.

What is the Immune system?

The immune system is a complex network of cells, tissues, and organs that work together to protect the body from foreign invaders, such as bacteria, viruses, and other pathogens. Its main components are the white blood cells, antibodies, the complement system, the lymphatic system, the spleen, the thymus, and the bone marrow. The immune system recognizes foreign invaders and attacks them, while also recognizing and tolerating "self" cells, tissues, and organs.

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A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.

Philadelphia Quakers, an NHL franchise, are no longer in existence.

The Barons are the latest NHL team to fold as of this writing. Selling to Nelson Skalbania due to financial plant cells difficulties with plans to relocate to Calgary. sold to John McMullen in an effort to improve his financial situation; McMullen is from the state of New Jersey. Should try to get their financial situation better.

The Winnipeg Jets are a professional ice hockey team from Canada that competes in the National Hockey League's Western Conference (NHL). The Thrashers franchise was established in Atlanta in 1999, and throughout its first five years of operation, each of those years saw losing seasons.

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Answer:codon i think

Explanation:

Answer:

Electrical stimulation of the brain (ESB) is used mostly on Animals..

Explanation:

Electrical stimulation of the brain (ESB) is a relatively new technique used to treat chronic pain and tremors associated with Parkinson disease. ESB is administered by passing an electrical current through an electrode implanted in the brain.

^_________^ <3

Answer:

Yes The cap is present on all roots except those of parasites and in mycorrhizal roots .The roots of aquatic plants have vestigial caps when young but the initial soon die and the cap disappear. The calyptrogen initiate root cap in monocots. In the dicots the cap appears to be a specialized development of the epidermis. In Monocots the cap has attained independent origin.

Answer:

D chemoreceptors as A is light , B is temperature not sure what C is

Explanation:

Answer:

Continental Tropical (cT): Hot and very dry. They usually form over the Desert Southwest and northern Mexico during summer. They can bring record heat to the Plains and the Mississippi Valley during summer, but they usually do not make it to the East and the Southeast.

Explanation:

Continental Tropical air masses (cT) are a type of tropical air produced by the subtropical ridge over large areas of land and typically originate from low-latitude deserts such as the Sahara Desert in northern Africa, which is the major source of these air masses. ... Arctic, Antarctic, and polar air masses are cold.

Answer:   Your circulatory system is vital to your survival. Its function is to distribute blood and other nutrients to all your body’s organs and tissues. The small blood vessels called capillaries facilitate the exchange of oxygen and nutrients between your blood and the cells in your body.

Explanation:

Answer: for me it’s a multiple choice

Explanation:

Answer:

A scientific question is a question that may lead to a hypothesis and help us in answering (or figuring out) the reason for some observation. Asking a scientific question is a part of the scientific method (which includes making an observation, asking the question, forming a hypothesis, testing it and accepting/rejecting/modifying the hypothesis). A good scientific question has certain characteristics. It should have some answers (real answers), should be testable (i.e. can be tested by someone through an experiment or measurements), leads to a hypothesis that is falsifiable (means it should generate a hypothesis that can be shown to fail), etc. For example, an observation that a passing car makes a lot of noise can prompt someone to ask "if there is some correlation between the speed of the car and the noise it generates", which can result in a hypothesis that at higher speeds more noise is generated. This can be tested by driving a car and measuring the noise level and these results can help us accept or reject or modify the hypothesis.

Explanation: