5. that which is produced as a result of a chemical reaction
quired to start a chemical reaction

Hardwired characteristics of the brain that attempt to keep us in balance by correcting deficiencies are referred to as homeostatic mechanisms.

Homeostasis is the body's ability to maintain a stable internal environment despite external changes.

In the context of the brain, homeostatic mechanisms involve various processes that regulate physiological functions and maintain optimal levels of essential substances.

These mechanisms can include feedback loops that detect imbalances and initiate corrective actions.

For example, if there is a deficiency in a particular nutrient or hormone, the brain may activate mechanisms to increase its production, decrease its consumption, or enhance its absorption from the environment.

Homeostatic mechanisms play a crucial role in ensuring the body's overall stability and functioning, helping to maintain proper levels of various substances and promoting overall well-being.

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Answer:

DNA helicase

Explanation:

The image of this question shows the replication of DNA into two identical copies. However, before this occurs, the double-stranded DNA needs to be unwound or separated so that each single strand can serve as a template for a new strand.

An enzyme called DNA helicase is responsible for the separation of the DNA molecule into single strands. After which, DNA polymerase begins to add nucleotides to each single strand of DNA.

Answer:

When the two bodies are moving in opposite direction

Explanation:

The relative velocity of two bodies is found by adding the velocity of one body to the other body when the two bodies are moving in opposite direction

For example, if one body is moving towards the right direction at 5.0 km/hr and the other body is moving left at 1.0 km/hr, the relative velocity of the body   moving right relative to the other moving left is given as 5.0 + 1.0 = 6.0 km/hr.

Relative velocity can be experienced when moving up along on an escalator relative to the visible side drive mechanism going down.

Answer:

Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere.

Answer:

What caused earth to tilt?

Explanation:

Long, long ago, when Earth was young, it is thought that something big hit Earth and knocked it off-kilter. So instead of rotating with its axis straight up and down, it leans over a bit. By the way, that big thing that hit Earth is called Theia.

Answer:

C. glycolysis.

Explanation:

Hope this will help

Answer:

Nucleus

Explanation:

Protons and Neutrons are found inside the nucleus of the atom, and the electrons circle the nucleus in electron clouds/orbitals.

Answer: Protons and neutrons are found within the Nucleus.

Plz mark brainliest :)

Answer:

A

Explanation:

The term was coined from the idea that the radioactive material would mix with the debris thrown in the air from the explosion.

If you increase the external concentration of potassium ions (K+) on the resting membrane potential, you are most likely to observe depolarization.

This is because K+ ions play a crucial role in maintaining the negative charge of the intracellular space relative to the extracellular space, which is responsible for the resting membrane potential. By increasing the concentration of K+ ions in the extracellular fluid, the concentration gradient across the membrane will be disrupted, and the equilibrium potential for K+ will shift towards the more positive potential.

This will result in an increase in the membrane potential towards the threshold for action potential initiation, leading to depolarization. However, it's important to note that the effect of increasing external K+ concentration on the resting membrane potential may vary depending on other factors such as the concentration of other ions and the permeability of the membrane to these ions.

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The current through a single pump in 1s if one Na/K pump may be capable of 10,000 cycles in a minute is 193000 A.

To determine the current that is produced through a single pump in 1s, we will have to make use of Faraday's law of electrolysis, which states that the amount of chemical change that occurs during electrolysis is directly proportional to the quantity of electricity that passes through the system. Thus, we have:

Q = n × F × Z

where Q = quantity of electricity, n = number of moles of electron passed, F = Faraday constant, 96500 C/mol, and Z = charge of an ion in electrochemical reactions

The number of electrons involved in the electrochemical reaction is 2. Since the charge of a sodium ion is +1, the charge of two sodium ions is +2. Thus,

Q = n × F × Z

= 1 mol × 96500 C/mol × 2C/mol

= 193000 C

To determine the current, we have:

I = Q / t

where I = current and, t = time taken.

Thus, I = 193000 / 1 s

= 193000 A

Therefore, the current through a single Na/K pump in 1s is 193000 A.

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In meiosis, homologous chromosomes separate in step a, which is called "anaphase I," and four haploid nuclei are formed in step b, which is called "cytokinesis II."

During anaphase I of meiosis, homologous chromosomes, which consist of one chromosome from each parent, separate and move toward opposite poles of the cell. This ensures that each resulting cell receives only one copy of each chromosome pair.

Anaphase I is a crucial step in meiosis as it ensures the distribution of genetic material between the daughter cells is randomized and contributes to genetic diversity.

Following anaphase I, the cell enters cytokinesis II, the second stage of cell division in meiosis. Cytokinesis II involves the physical separation of the two cells formed after anaphase I, resulting in the formation of four haploid nuclei, each containing a single set of chromosomes.

These nuclei go on to further undergo a process called "telophase II" to form four distinct haploid cells, known as gametes, which are essential for sexual reproduction.

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A simple stain can help discern the cell shape and arrangement of prokaryotic cells.

- Cell shape: A simple stain can reveal the overall shape of prokaryotic cells, such as cocci (spherical), bacilli (rod-shaped), or spirilla (spiral-shaped).

- Cell size: By staining prokaryotic cells, their size can be observed and compared, providing information about their dimensions.

- Cell arrangement: A simple stain can assist in determining the pattern of cell arrangement, such as clusters (staphylococci), chains (streptococci), or pairs (diplococci).

- Presence of external structures: Certain simple stains, like Gram stain, can help identify the presence of external structures like flagella or capsules on prokaryotic cells.

In conclusion, a simple stain is a valuable technique for discerning important properties of prokaryotic cells, including their cell shape, size, arrangement, and the presence of external structures. This staining method provides useful information for the characterization and identification of prokaryotic organisms, contributing to our understanding of their morphology and cellular characteristics.

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Answer:

lots of rod cells and some cone cells

Explanation:

this could be way off, but I hope it helps you

also, rather have an answer than leaving it blank

Answer:hydrogen bonds

Explanation:

Opposite charges attract one another. The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond. This bond is very weak.

Answer:

because 2020 had Corona and hurricanes

Answer:

(3)

Explanation:

I found it on a website.

The Coriolis effect is named after Gaspard Gustave de Coriolis (1792–1843), who provided the first mathematical explanation for this apparent deflection of motion off a straight line in a rotating coordinate system.

The Coriolis effect depicts the pattern of deflection experienced by objects traveling great distances around Earth without being firmly linked to the ground.

Several significant large-scale weather patterns are caused by the Coriolis effect. Earth's rotation is crucial to understanding the Coriolis effect. Particularly, Earth rotates more quickly at the Equator than at the poles.

Because Earth is wider towards the Equator, equatorial regions rotate at a speed of around 1,600 kilometers (1,000 miles) per hour in a 24-hour period. Earth rotates slowly toward the poles, at 0.00008 kilometers per hour.

Therefore, The Coriolis effect is named after Gaspard Gustave de Coriolis (1792–1843), who provided the first mathematical explanation for this apparent deflection of motion off a straight line in a rotating coordinate system.

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Answer:

the answer is D

Explanation:

The answer is D bc looking is destroying the owls home that answer is not c bc this has nothing to do with the owl

In parts of the northwestern United States, logging is destroying many of the forests that are home to the spotted owl, the following is the primary threat to the spotted owl population: loss of habitat that is in option D.

The destruction or degradation of a natural environment in which a specific species of animal or plant lives, as a result of deforestation, urbanization, industrialization, and other factors, is referred to as habitat loss. As a result of the loss of habitat the plants and animals that live there are forced to adapt to the new conditions as a result of habitat loss.

Hence, in parts of the northwestern United States, logging is destroying many of the forests that are home to the spotted owl, the following is the primary threat to the spotted owl population: loss of habitat that is in option D.

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Explanation:

When a tissue or organ gets damaged, the underlying cells get damaged. It's like saying the bricks of the house get damaged when a wall gets ruined. The bricks make up the wall; as much as the cells make up the tissues or organs or overall organism.

Since the cells get ruined like this, they either die off from said damage or there's a waste disposal process to clean up the mess. New cells then take place of the old decayed ones.

So in short, the repair process brings in new building blocks (i.e. cells) which is why choice A can be ruled out.

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Choices B and D are similar stories. Cells undergoing reproduction split to create new cells, and its akin to growth. When a living thing grows, it takes in materials from the environment (food, water, oxygen) and converts it to useful material to create new cells.

Going back to the construction analogy, it's like having a wall of 2 bricks high then adding another layer of bricks to make the wall higher. As you can see, we need more bricks (i.e. cells) to have this growth happen. This explains why malnourished kids have trouble growing properly. Of course there's more complexity to the story but this is the basic idea of it.

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To summarize, choices A, B and D all require new cells in order to carry out those functions. Without new cells, it's simply impossible to do.

On the other hand, movement does not require new cells. Movement simply requires energy in the form of sugars and oxygen among other key ingredients. New cells are not needed to carry out movement.

The process of turning energy into movement is very complicated. I recommend checking out cellular respiration as one further topic of study. The basics of that is it turns stuff like glucose (a type of sugar) into ATP (adenosine triphosphate) which is then useful for things like muscle contractions.

A species with a low basicity and/or high steric hindrance is more likely to act as a base rather than a nucleophile. Examples of such species include tertiary amines, bulky alcohols, and alkoxides.

In general, a base is defined as a substance that accepts a proton, while a nucleophile is defined as a substance that donates a pair of electrons to form a chemical bond. Based on these definitions, the following factors contribute to a species being more likely to act as a base rather than a nucleophile:
1. Basicity: A species with a higher basicity will be more likely to act as a base than a nucleophile. This is because a more basic species has a greater affinity for accepting a proton than for donating electrons.
2. Steric effects: A species with a bulkier or more hindered structure will be more likely to act as a base than a nucleophile. This is because a bulky or hindered species has a more difficult time approaching a molecule to donate electrons.
3. Electronegativity: A species with a higher electronegativity will be more likely to act as a nucleophile than a base. This is because a more electronegative species has a greater attraction for positive charge, making it more likely to donate electrons.
Therefore, a species with a low basicity and/or high steric hindrance is more likely to act as a base rather than a nucleophile. Examples of such species include tertiary amines, bulky alcohols, and alkoxides.

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Scientific evidence should be used to investigate the validity of a scientific claim rather than anecdotal evidence because scientific evidence can be empirically tested and verified (option C). This means that scientific evidence is based on systematic observation, experimentation, and analysis, and can be reproduced by other scientists. Anecdotal evidence, on the other hand, represents only one or a few observations about a particular natural phenomenon (option D), and is often based on personal experiences or opinions. As a result, anecdotal evidence is not as reliable as scientific evidence, and is not a valid basis for making scientific claims.

Answer:

Facilitated transport proteins

Explanation:

Large molecules such as glucose or carbohydrates use proteins to help break down cell membranes. Some membrane proteins with chains of carbohydrates are attached to help cells become acquainted with certain molecules.

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The correct answer is: All of the following would result in an increase in renin release except d. increased blood volume. Increased blood volume typically leads to a decrease in renin release as it helps maintain proper blood pressure and osmotic balance.

Renin is released by juxtaglomerular cells in response to decreased renal arterial pressure, increased beta-1 adrenergic receptor activation in the kidney, or decreased salt supply to macula densa cells.[1] Renin is a protein that transforms angiotensinogen, which is produced in the liver, into angiotensin I. The lungs then generate an angiotensin-converting enzyme (ACE), which converts angiotensin I to angiotensin II. Angiotensin II has numerous functions. It causes vasoconstriction and raises blood pressure by acting on angiotensin II receptors. Renin release is stimulated by decreased blood pressure at the glomerulus, blockage in the renal artery, and stimulation of juxtaglomerular cells. It is also inhibited by increased osmotic concentration at the macula densa. However, increased blood volume does not lead to a decrease in blood pressure or osmotic concentration, and therefore would not stimulate renin release.

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Answer:

This is primary succession. I hope this helps!

Given question is incomplete as it lacks the choices for  molecules and their properties, however, the missing part is attached with the answer:

Answer:

Molecules and their properties are given as bellow under the type of compound:

Alcohol-

Alcohol is highly polar andmay act as a weak acid

The functional group in alcohol is (OH)

Carboxylic acid-

Carboxylic acid acts as an acid

The function group is (COOH)

Aldehyde-

Aldehyde may be a structural isomer of a ketone

Functional group is (C=O)

Thiol-

Thiol forms disulfide bonds

Function group is (S-H)

Amine:

Amine acts as a base

the functional group is (NH2)

Organic phosphate-

contributes negative charge (PO4)

This functional group is polar

a forms the outer covering of the skin and also lines the body cavity.

Answer: Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.

Explanation:

Answer:

The answer is D.) Diminished effects of diseases on crops.

Explanation: I just took the quiz on edge 2021 :)

An advantage of genetic engineering is the diminished effects of diseases on crops. The correct option is D.

Genetic engineering, often known as genetic modification or genetic manipulation, is the use of biotechnology to directly manipulate an organism's DNA.

The manipulation or modification of an organism's DNA or cells is known as genetic engineering. Cloning is an excellent illustration of genetic engineering in action.

The main worries concerning the negative consequences of GM foods on health include the transmission of antibiotic resistance, toxicity, and allergenic. From the standpoint of allergies, there are two difficulties.

Therefore, the correct option is D, diminished effects of diseases on crops.

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Answer:

When two continental plates collied (on land) a mountain range can be created.

Answer:

1. 0 degree 2. 25 degree 3. 20 degree 4. 45 degree 5. 1 degree

Answer:

Diffusion

Explanation:

The concept of diffusion states that molecules like to travel from areas of high concentration to low concentration.

Let's think about an example. Let's say you are having a party at your house and in one room there is 100 people and in the other room connected to it, there is only 10 people. What do you think is going to happen as time passes? Right, people are going to move to the room where there is less people so as to equally disperse themselves across the area. The same thing happens within our body with ions and gases.

Ions can diffuse into or out of cells based off their concentration gradients. If there are too many ions on one side, they will simply move to the other side. There are different types of diffusion. Passive diffusion and facilitated diffusion, but those are for a different conversation.