when tissue injury occurs, which cell initiates the inflammatory process by releasing chemical mediators?

Answer:

Mechanical advantage MA is the ratio of output (generated by the machine)force to intput (applied to the machine) force. So MA=4 means that for example if you apply 100N then your machine will multiply that force and generate 400N.

Answer:

a. It states that cells come from previously existing cells

True , Lactase breaks down lactose into the monosaccharides galactose and glucose

Lactose intolerance occurs when your small intestine doesn't produce enough of an enzyme (lactase) to digest milk sugar (lactose). Normally, lactase turns milk sugar into two simple sugars — glucose and galactose — which are absorbed into the bloodstream through the intestinal lining. If you're lactase deficient, lactose in your food moves into the colon instead of being processed and absorbed. In the colon, normal bacteria interact with undigested lactose, causing the signs and symptoms of lactose intolerance. Lactose digestion occurs in the small intestine with the help of the enzyme known as lactase. Lactase breaks down lactose into the monosaccharides galactose and glucose, which makes them available for absorption. Glucose ultimately gets taken up by our cells with the help of insulin. Galactose is transported to the liver, where it is turned into glucose for use in energy production.

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Position 3 in the image shows the setting of the sun as it is towards the West direction.

Sun is a large ball of fore and hence is very hot. The sun is actually a star but is the closest to the Earth and hence appears very large. It is the center of the solar system. The sun is also the source and light and energy for Earth. It rises in the East and sets in the West.

Direction in science is the location of any object. It is a relative term where the location of an object is described in relation to another object. The universal directions used on the earth are: East, West, North and South. These are also called cardinal directions.

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Answer:

Energy transformation

Answer:

photosystem II

Explanation:

Photosystem II (or water-plastoquinone oxidoreductase) is the first protein complex in the light-dependent reactions of oxygenic photosynthesis. It is located in the thylakoid membrane of plants, algae, and cyanobacteria.

wikipedia.

In classical conditioning, repeated presentations of the conditioned stimulus (CS) without the unconditioned stimulus (US) can lead to extinction of the conditioned response.

Extinction is the process by which the conditioned response becomes weaker or disappears over time due to the absence of the unconditioned stimulus. For example, consider a person who has been conditioned to associate the sound of a bell with the sight of food. When the bell is rung, the person salivates (a conditioned response). If the bell is rung repeatedly without the food being presented, the person's salivation response will eventually decrease or disappear. This is because the absence of the food (the unconditioned stimulus) means that the conditioned response is no longer reinforced, and the association between the bell and food becomes weaker over time. In summary, repeated presentations of the conditioned stimulus without the unconditioned stimulus can lead to extinction of the conditioned response.

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Answer:

please mark brainliest im trying to level up :>

Explanation:

1. The resources the human body needs to survive include food, water, and oxygen. Food includes macro-molecules, as well as vitamins and minerals. Water- can be taken in through foods or drinks, 3/4 of the body is water and oxygen is the air around us is about 20% oxygen and the gas humans need to survive.  

2. The role that food play in the human body depends on the type of food; (there are three types of food, carbohydrates, lipids and proteins). Carbohydrates act as a quick source of energy, lipids are long term source of energy, cushioning of organs, and also makes up much of the brain. Proteins mainly build and repair body tissues.

3. The role of water in the human body includes;

Dissolves other materials and allows them to flow in the blood, it gives the cells structure, just the right amount needed to prevent shrinking and exploding, allows food to digest and pass through the intestinal walls in the blood stream, carry waste products out of the body in the urine and regulating homeostasis of body temperature by evaporating and sweating.  

4. The role of oxygen in the human body is that it allows human to bur food, creating energy through the process of respiration. Each cell in the body needs oxygen to survive. Cells turn glucose and oxygen into energy (ATP) within their mitochondria through cellular respiration process. Therefore; without oxygen, food can not be processed and energy won't be made.

5. The human body systems that work together to create, process or distribute the body's main power sources include; the digestive system and the cardiovascular system, Food is taken through the digestive system, passes through cardiovascular system for the distribution to all cells where its let into the cells by insulin and processed within the mitochondria. Also the respiratory system and cardiovascular system, Oxygen is taken through the respiratory system, and passes to the cardiovascular system for distribution to all cells, where its processed within the mitochondria. Water goes through digestive system, cardiovascular system and the urinary system to remove wastes and also maintain homeostasis.

6. Personal factors and environmental factors impact the body's ability to survive without air, food or water. Environmental factors include the presence of dangerous animals, temperature of air, humidity of air, presence of protective clothing among others. Personal factors on the other hand include; Fitness level, age, will to survive, amount of fat, genes, metabolism, etc.

In the absence of food, the body will begin to break down the fat stored in the body and the absence of water leads to reduced reabsorption.

The body is equipped with numerous systems that take care of issues such as lack of food, water, sleep and shelter.

In the absence of food, the body will begin to break down the fat stored in the body and the absence of water leads to reduced reabsorption.

The absence of sleep makes the body to feel dizzy signaling the need for sleep and in the absence of shelter, the body can shiver to maintain heat.

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If the amount of fertilizer applied to plants is increased, then plant growth will increase.

Since out here the independent variable is the variable that's being controlled or changed on reason by the experimenter, It can moreover be thought of as the cause is the fertilizer and the dependent variable is which is the one dependent on the independent variable is the growth of the plant. Here the hypothesis for an observable phenomenon is a proposed explanation or a theory to be utilized in science, one must be able to test it within the frame of a test.  A logical examination is planned to test this hypothesis. Here the Hypothesis is that  If the amount of fertilizer applied to plants is increased, then plant growth  will increase.

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The part of a normal human neuron that gets twisted together to form a neurofibrillary tangle is the tau protein.

A neurofibrillary tangle is a twisted structure that develops inside the brain's nerve cells, mostly in individuals with Alzheimer's disease. Tau is a protein that forms fibers in nerve cells, and these fibers entwine themselves into a tangled mass.

These tangles of fibers appear to disrupt the cell's normal functioning, and they may play a role in the death of brain cells seen in Alzheimer's disease.The tau protein is responsible for the formation of neurofibrillary tangles. When this protein is abnormal, it develops into tangled filaments known as neurofibrillary tangles in the brain.

These tangles disrupt the normal functioning of the neurons, causing them to malfunction. It is one of the hallmarks of Alzheimer's disease and other neurodegenerative disorders.

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Answer:

C. Protection

Explanation:

Answer:

by checking if the muscles are injured

Answer:

Explanation:

Negative feedback refers to a mechanism whereby a change in a specific direction triggers a response that tends to counteract the initial change and return the system to its original state. Related to fluid balance, negative feedback occurs when the body senses changes in fluid levels and adjusts various physiological processes to maintain a stable balance of water and electrolytes in the body. For example

As the renal tubules become less permeable to water, less water is reabsorbed into the bloodstream and a greater volume of diluted urine is produced. This type of control is an example of a negative feedback mechanism. It aims to maintain a constant concentration of blood plasma.

Answer:

D) A highway with trucks because it transports molecules

Explanation:

Molecules, such as proteins, are transported from the ER in small sacs called transport vesicles to their proper destinations, much like on an intracellular highway.

Alveolar Surface Tension is Reduced by Pulmonary Surfactant. A lipoprotein substance known as surfactant is secreted by type II alveolar cells.

While breathing in and out, oxygen and nutrients are exchanged between the blood and alveoli in the lungs. When oxygen is inhaled from the air, it gets to the body's tissues via the alveoli, blood, and structures inside the body.

An alveolus is made up of an extracellular matrix encircled by capillaries, a layer of simple columnar mucosa (very thin, flattened cells), and also an epithelial layer. The alveolar membrane, sometimes known as the oxygen diffuses, which permits the exchange of gases, includes the epithelial lining.

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Answer: C. They can be six to twelve inches in length.

Explanation: I got it correct on edmentum

Answer:

c. they can be six to twelve inches in length

Explanation:

got it right on the test in edmentum

Answer:

В

Explanation:

Inherited variation

Natural selection is a process that occurs when certain inherited traits or variations of a species give certain individuals an advantage in their ability to survive and reproduce in a given environment. Therefore, for natural selection to occur, there must be inherited variation within a population. Other conditions such as unlimited resources, a static environment, and a long life span do not necessarily have a direct impact on natural selection. However, these factors can affect the relative fitness of individuals with different inherited variations and thus influence the outcome of natural selection.

The genetic material in bacteria forms a large complex with a protein called the nucleoid. The nucleoid is a region within the bacterial cell that contains the bacterial chromosome, which is a long, coiled strand of DNA that contains the genetic information necessary for the bacterium's growth and reproduction.

In contrast to eukaryotic cells, bacteria lack a membrane-bound nucleus to contain their genetic material. Instead, the bacterial chromosome is condensed and organized within the nucleoid by binding to proteins, including histone-like proteins and structural maintenance of chromosome (SMC) proteins. These proteins help to compact the DNA and maintain its structure and organization within the cell. In addition to the bacterial chromosome, the nucleoid can also contain plasmids, which are small, circular pieces of DNA that exist independently of the chromosome and can carry genes that confer beneficial traits such as antibiotic resistance.

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According to the research, the correct option is technology. Technology is the application of scientific knowledge to solve problems or create new products.

It is a knowledge that comes directly from the field of science to achieve a solution that allows human beings to solve a given problem.

In this sense, it is a process that uses a combination of scientific knowledge, in the design and definition of procedures to build new products or give it another function.

Therefore, we can conclude that technology is the application of a set of scientific knowledge to satisfy a need in a specific field.

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In general, stem cells have 3 main properties:

1) They are capable of dividing and renewing for long periods of time.

2) They are unspecialized cells.

3) They can give rise to specialized cells.

Answer:

its a b d

Explanation:

Answer:

Macroinvertebrates serve several important functions within the aquatic environment:

They provide a valuable "cleaning" service by scavenging dead or decaying bacteria, plants, and animals, which helps recycle nutrients back into the system.

They are an important food for fish, birds, amphibians and reptiles.

Explanation:

the list could go on and on.

Answer:

non-disjunction

Explanation:

During meiosis, errors can occur, resulting in an irregular number of chromosomes in the resulting cells. One such error is called non-disjunction. Non-disjunction can happen in either meiosis I or meiosis II and involves the failure of chromosomes to separate properly.

If non-disjunction occurs in meiosis I, it means that homologous chromosomes fail to separate, resulting in one cell receiving both chromosomes and the other cell not receiving any. This leads to a pair of cells with an irregular number of chromosomes (one cell with an extra chromosome and the other missing a chromosome).

If non-disjunction occurs in meiosis II, it means that sister chromatids fail to separate, resulting in one cell receiving both chromatids and the other cell not receiving any. Again, this leads to a pair of cells with an irregular number of chromosomes.

The differences in the slopes and shapes of the curves to understand how the abundance distribution of oribatid soil mites changes as a result of a fire.

The abundance distribution of mites changes as a result of a fire because:

1. The total number of mites decreases.

2. The abundance of some mites decreases.

3. The diversity of mites decreases.

4. The rank of some mites changes.

5. The composition of the mite community changes.

Thus, the correct option is that the total number of mites decreases, the abundance of some mites decreases, the diversity of mites decreases, the rank of some mites changes, and the composition of the mite community changes.
The question asks about the abundance distribution of oribatid soil mites in burned and unburned patches of forest in the California Cascade Range. Based on the given rank abundance curves for both communities, we can analyze the changes in abundance distribution as a result of a fire.
Step 1: Examine the rank abundance curves for both burned and unburned patches.
Step 2: Compare the slopes and shapes of the curves to determine how the abundance of mites changes between the two conditions.
Step 3: Identify any noticeable shifts in species dominance, evenness, or overall abundance in response to the fire.
However, in general, you should look for differences in the slopes and shapes of the curves to understand how the abundance distribution of oribatid soil mites changes as a result of a fire.

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Corynebacterium xerosis is rod-shaped, barely curved, and organized collectively withinside the shape of a V. Simple stains are used for the identity of simple shape, approximate size, and association of cells present.

Is Corynebacterium xerosis acid fast-positive?

The genus Corynebacterium consists of a variety of Gram-positive, nonacid-fast, immobile, rod-shaped, catalase-positive bacteria. Most of the species are believed to be part of normal human skin, throat, and gastrointestinal flora.

Corynebacterium xerosis grows in colonies 0.2–1.0 mm in diameter, tan in color, slightly dry in appearance, and non-hemolytic when cultured on blood agar. Microscopically, corynebacterium xerosis is an irregularly colored polymorphic Gram-positive bacillus with club-like ends.

Therefore, two noteworthy physical characteristics of corynebacterium xerosis are visible after performing a simple stain approximate size, and shape.

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Answer:

A and C

Explanation:

This is the right answer! Please mark me Brainiest!! Hope that helped..

Answer:

A. Which source of electricity generation caused the most emissions?

B. What types of industries are responsible for greenhouse gas emissions?

D. Why is agriculture the largest source of greenhouse gas emissions?

These questions would help clarify the evidence presented in the chart. Understanding which sources of electricity generation emit the most greenhouse gases, what industries are responsible for these emissions, and why agriculture is the largest source could provide important context for understanding the data and its implications.

The reciprocal use of nucleotides in purine biosynthesis allows for the efficient use of metabolic intermediates and provides a mechanism for the synthesis of both adenine and guanine from a common precursor.

The reciprocal use of nucleotides is a key concept in the de novo biosynthesis of purines, which are essential components of nucleic acids. Purines are synthesized from simple precursors through a complex pathway involving the interconversion of various nucleotides.

In the purine biosynthesis pathway, the reciprocal use of nucleotides refers to the fact that the purine ring is constructed from two distinct nucleotide bases, namely, adenine (A) and guanine (G), which are synthesized from the common precursor inosine monophosphate (IMP). The synthesis of A and G involves the interconversion of various nucleotides, including adenosine monophosphate (AMP), guanosine monophosphate (GMP), and xanthosine monophosphate (XMP), which are formed through a series of enzymatic reactions.

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Answer:

Percentage of glucose that is returned to the muscles.

Explanation:

After intense physical activity, where glycogen reserves are consumed, the muscle acquires its resting and reactivation position, is where the organism that feeds the new reserves for the next physical activity is located.

Foods rich in carbohydrates identified as ATP or glucose in good quantities, but this depends on the amount of intake and the quality of the food, that is how when consuming these sources, the serum glucose values are metabolized, that is, increases glycemia and this promotes the release of insulin that is responsible for generating energy reserves with more complex chemical bonds such as glycogen.

The cells probably have a role in absorption of materials and the cells are epithelia. Option C and D are correct.

Based on the characteristics provided, the correct conclusions that can be drawn are:

C. The cells probably have a role in absorption of materials

D. The cells are epithelia

Option A is incorrect because connective tissue cells are not typically closely spaced together and do not have microvilli. Option B is also incorrect because this characteristic does not necessarily indicate that the cells are capable of moving and relocating in response to chemical signals.

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