Which chemicals are not secreted by the platelet granules?
Certain chemicals, such as prostaglandins and endothelins, are not secreted by platelet granules. Platelet granules release substances like serotonin, ADP, and thromboxane A2. Glycoproteins and some clotting factors come from other sources.
Platelets, also known as thrombocytes, are crucial components of the blood that play a key role in the clotting process. They contain granules that secrete various chemicals necessary for clot formation and wound healing.
However, certain chemicals are not secreted by platelet granules, such as prostaglandins and other vasoconstrictors like endothelins, which are released by other cells like leukocytes and endothelial cells.While platelet granules secrete substances such as serotonin, ADP, and thromboxane A2, they do not secrete glycoproteins like FVIII and FV, or enzymes such as transglutaminase (FXIII). These factors are integral to the clotting process but originate from different cellular pathways and structures.Understanding the roles and sources of these chemicals is vital in comprehending the complex mechanisms of hemostasis and blood coagulation.
During his wrestling workout, damon loses about 4 pounds. he should consume ______ of water during or after his workout.
Why are lichens a good pioneer species after a volcanic eruption? They are able to grow on moist soil. They are able to grow on bare rock. They are able to attract animals. They are able to grow without water.
B. They are able to grow on bare rock
What is a photosystem? the group of proteins and pigments that transfers electrons to reaction centers units of light that cause electrons to transfer to nadph during photosynthesis the name given to the combined light and dark reactions of photosynthesis the entire range of visible wavelengths in the electromagnetic spectrum?
Answer:
The group of proteins and pigments that transfers electrons to reaction centers
Explanation:
Photosystem is the unit responsible for photosynthesis and consists of reaction center pigment and antenna complex. Antenna complex includes chlorophyll, accessory pigments and some protein. They function to channelize the solar energy towards the reaction center pigment. Chlorophyll "a" serves as reaction center pigment in green plants. Function of photosystem is to serve in light reactions of photosynthesis.
Deep sleep appears to play an important role in:
If you noticed chromosomes lined up near the middle of the cell, the cell would most likely be in
The absence of what seismic wave type provides evidence for migration of magma in volcanoes
As magma moves upward in a volcanic chamber, it causes fracturing of brittle rock which gives rise to short-period earthquakes and the ensuing seismic waves are known as 'A' waves. These type of occurrences are known as volcano-tectonic events.
The primitive digestive cavity of the gastrula, which is lined with endoderm
Why is photosynthesis considered the most important chemical reaction on earth?
In an infant's humerus, what happens if the rate of hyaline cartilage death is faster than the rate of interstitial growth?
The force driving simple diffusion is ________, while the energy source for active transport is ________.
The action that drives simple diffusion is the concentration gradient, and it doesn't require any energy. Conversely, adenosine triphosphate (ATP) is the energy source for active transport, which moves substances against their concentration gradient and requires energy.
Explanation:The force driving simple diffusion is the concentration gradient, which means substances move from areas of high concentration to areas of low concentration. This process doesn't require any energy.
On the other hand, the energy source for active transport is adenosine triphosphate (ATP). Active transport allows cells to move specific substances against their concentration gradient, meaning from areas of low concentration to areas of high concentration. This process does require energy, which is provided by ATP. Examples of active transport include the operation of the sodium-potassium pump, which moves sodium out of cells and potassium into cells, both against their concentration gradients.
It's important to note that while simple diffusion happens naturally, active transport is a more controlled process that allows cells to maintain specific concentration of certain substances critical to their functions.
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How many years does a nurse practitioner go to school?
According to the law of conservation of matter, in any food chain we know that...
Answer:
Matter is changed into various forms but the total quantity remains unchanged.
Explanation:
Matter in a food web moves from producers to different degrees of consumers. The producers account for the maximum amount of matter in the food web. The matter then moves higher and is consumed by the first level of consumers where some of it might remain unconsumed, undigested, or released in other forms like gas. Then the second level of consumers uses the matter available from the first level where again some matter might not move to the next level. However, never in the food web is matter created or destroyed.
A nursing student is changing the client's bed. which action requires intervention from the nursing instructor?
which city is the epicenter of the earthquake located in according to
triangulation #2
harriburg Pa
parkfield CA
las vegas ,NV
mooselookmeguntic MN
Parkfield CA is the epicentre of the earthquake according to triangulation 2. So the correct option is B.
What is the epicentre of an earthquake?The epicentre of an earthquake is the location on Earth's surface that is immediately above the subsurface focal point (also known as the focus). The area immediately surrounding the epicentre may not experience the worst impacts of the earthquake.
By calculating arcs from three or more seismic observatories, the epicentre may be found. The arcs' radii are proportional to how long it takes seismic waves to travel from the focus to each station. The epicentre is where the arcs' junction occurs. In computer programmes, equivalent algebraic analysis is carried out.
seismic wave: a vibration that travels through the Earth or along its surface and is caused by an earthquake, explosion, or another comparable energy source. There are four main types of elastic waves produced by earthquakes; two of them, termed body waves, move inside the Earth, while the other two, called surface waves, move over its surface.
Seismographs provide data on the Earth and its underlying structure by recording the amplitude and frequency of seismic waves. In order to gather data for oil and gas exploration and engineering, seismic waves that have been artificially created and captured during seismic surveys are employed.
Therefore the correct option is B.
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can someone help me please
Examine and briefly describe the effects of resistance training on the muscular and skeletal systems
A gene that actively controls the expression of a trait is called a _______ gene.
Only the air reaching the ____________ is available for gas exchange. when air is moved from the atmosphere into the respiratory tract, a portion of it remains in the ____________ . this collective space, where there is no exchange of respiratory gases, is referred to as the ____________ , and it has an average volum
Only the air reaching the alveoli is available for gas exchange. When air is moved from atmosphere into the respiratory tract, a portion of it remain in the respiratory tract. This collective space where there is no exchange of respiratory gases, is referred to as the anatomic dead space.
What is Anatomic dead space?Anatomic dead space is the volume of air which is located in the respiratory tract segments which are responsible for the conduction of air to the alveoli of lungs and respiratory bronchioles but these do not take part in the process of gas exchange itself in the body.
Alveoli dead space causes carbon dioxide in the lungs to diffuse down its partial pressure gradient from the blood into the alveoli. Only the air which is reaching the alveoli is available for gas exchange in the alveoli. When air is moved from the atmosphere into the respiratory tract of a person, then a portion of it remains in the conducting zone of the respiratory tract.
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The optic nerve projects from the retina through a neural pathway that progresses to the ________ , which is located in the ________ lobe.
The correct order of substances from most acidic to most alkaline is _______, ________, __________.
To rank substances from most acidic to most alkaline, consider their pH impact and indicator colour changes. Sulfuric acid (H2SO4) is most acidic, followed by NH4NO3 and NaCN, with NaCl being neutral and NaOH most alkaline.
To determine the correct order of substances from most acidic to most alkaline, we must consider the properties of each substance and their effect on a universal indicator. Acidity and basicity can be measured using the pH scale, where lower numbers (0-6) indicate acidity, 7 indicates neutrality, and higher numbers (8-14) represent basicity or alkalinity. In the list provided, sulfuric acid (H₂SO₄) is a strong acid and will produce a dark red colour with a universal indicator, indicating its position as the most acidic. Sodium hydroxide (NaOH) is a strong base and will generate a purple colour with the indicator, placing it as the most alkaline.
Other compounds such as sodium cyanide (NaCN), which is a weak acid, ammonium nitrate (NH4NO3), which is slightly acidic, and sodium chloride (NaCl), which is neutral, will fall in between these two extremes. Therefore, arranging the substances from most acidic to most alkaline, we get: H₂SO₄, NH4NO3, NaCN, NaCl, and NaOH.
_____ stimulates the release of norepinephrine and dopamine and also blocks their reuptake.
The stimulation of release of norepinephrine and dopamine and blockage of their reuptake is done by amphetamine and cocaine.
Further Explanation:
Stimulants are the drug that induces the body function and more specifically the brain and the central nervous system. They basically induce the alertness, wakefulness, increase speech and motor activity.
Stimulants can enhance the activity of dopamine, norepinephrine and serotonin.
Amphetamine is a type of stimulant that produces the euphoric effect by enhancing the dopamine and it also inhibit the dopamine reuptake by interacting with the dopamine transporter.
Amphetamine also the levels of norepinephrine by both increasing and blocking its reuptake from the cell. Increase in norepinephrine results in peripheral vasoconstriction and thereby increase the blood pressure. Amphetamine can also increase the temperature and can cause the sleeplessness.
Amphetamine can be taken orally or it can also be injected or smoked.
Cocaine is a type of stimulant that inhibits the re-uptake of dopamine and norepinephrine by interacting with their receptor. It increases alertness and disrupts sleep. Its withdrawal is characterized by symptoms like increase irritation, agitation and extreme fatigue.
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Answer Detail:
Grade: College biology
Subject: Biology
Chapter: Control and coordination
Keywords:
Stimulants, drug, central nervous system, motor activity, dopamine, norepinephrine, serotonin, amphetamine, vasoconstriction, cocaine, receptor.
-2x-y=-3 how to solve for x
how did the study of fossils help support darwin's ideas about evolution?
When the sense of smell is blocked, as when we have a cold, foods do not taste the?
Which vitamin is synthesized by microbes in the intestine and helps to maintain bone health?
If the foot turns or rolls inward, the ankle will be:
If I said that my dog lived for 14 years, what am I describing?
A.
Life span
B.
Age
C.
Birth rate
D.
Life cycle
What is the most direct source of energy for cotransport?
The most direct source of energy for cotransport is: the movement of one of the transported substances down its concentration gradient.
Cell transport can be defined as the movement of ions, liquid molecules, or other substances across a cell membrane, either into or out of the cell of a living organism.
In Science, the two (2) main types of cell transport include the following:
Active transportPassive transportCotransport refers to a type of secondary active transport which involves the simultaneous movement of substances across a cell membrane in which the energy required to move a substance against an electrical potential or concentration gradient is typically provided by the movement of another substance along its concentration gradient.
In conclusion, the movement of one of the substances that is being transported down its concentration gradient serves as the most direct source of energy for cotransport.
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Every 3 letters on strand of mRNA are called what