Which organs are responsible for destroying old red blood cells?

Answers

Answer 1
Spleen is also known as the graveyard of RBC, if it helps u 

1.Stem cells in bone marrow make all blood cells. RBC lives about 120 days. 
RBC are destroyed in Spleen. This process takes place as: 
- RBCs are ruptured. 
- Heme and globin portions separated. 
- Globin > amino acids. 
- Iron transferred in transferrin into the blood > into bone marrow for reuse. 
- Heme > Biliverdin > Bilirubin > liver >small intestine. 



2.Reticuloendothelial cells participate in the destruction of senescent RBC's. The spleen is a well suited site of RBC destruction given that cells must course through 2-3 micron apertures in the walls of splenic sinusoids, which is an ultimate test of cell pliability. Rigid cells are entrapped and phagocytosed. Intra-erythrocyte inclusions are removed during splenic circulation. 
Destruction of RBCs happens within reticuloendothelial cells – NOT in the circulation. Globin and heme get recycled, porphyrin is degraded to bilirubin which is conjugated by the liver and excreted in the gut. Rate limiting step is conjugation. Indirect (unconjugated) bilirubin is result if this doesn’t happen. 
Normally ~10% RBCs lyse while in circulation Þ Hgb gets released into circulation and rapidly disassociates into alpha and beta dimers which are bound by haptoglobin. The Hgb/haptoglobin complex is transported to the liver. If haptoglobin is depleted, free Hgb circulates and is filtered by the kidney. Free Hgb is either reabsorbed by renal tubular cells or excreted as free Hgb in the urine. 


3. Another site reported that 
RBC destroyed in liver and spleen, by macrophages. 2 million destroyed per second. 
Hb is released and iron is recovered and returned to bone marrow.

Related Questions

how did newton use creativity and logic in his approach to investing light

Answers

light passing through a prism is your answer

When does the movement of materials in and out of the cell not require energy?

Answers

Answer : Passive transport mechanism Explanation: Passive and Active transport mechanisms are the two types of transport mechanisms by which molecules move in and out of the cell membranes. Passive Transport mechanisms do not require energy from cells. The movement of the molecules from High to Low concentration requires no energy. E.g. Osmosis, simple and facilitated diffusion.

All organisms contain DNA and RNA. What are the subunits of DNA and RNA? A carbohydrates B simple sugars C nucleotides D amino acids

Answers

The answer is C. Nucleotides

Answer:

The answer is: C nucleotides.

Explanation:

The letters are A, C, G, and T, which symbolize the four nucleotide subunits of a DNA-adenine, cytosine, guanine, thymine band, which are covalently linked bases to phosphoric chains.

The answer is: C nucleotides.

Which of the following can be best researched using a microscope?

I think it is C

A How well the body's systems are functioning
B Why organs are connected to one another
C The internal structure of cells within the body
D Which cells secrete hormones into the blood

Answers

        It would be C, The internal structure of cells withing the body. Microscopes are designed to look at cells, as the magnification is at that level.

Answer: Option C

Explanation:

The major advancement of the science in the field of research is the visualization of the cells under a microscope.

The cells that is present inside the human body can be seen under the microscope, this helps in the study of the cells and its various components.

Many diseases can be cured as the study of cell will allow us to know the defects and then the defects can be cured.

Availability of substitutes plays a role in determining the bargaining power of suppliers.
a. True
b. False

Answers

yo whatever your name is, 

the answer is true 
A. True

there You go mate

Can you explain how the water and carbon dioxide get into the plant in order to do photosynthesis? Also, can you describe the pathway for glucose to get into an animal for respiration?

Answers

Photosynthesis makes the glucose that is used in cellularrespiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While wateris broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to formwate

Which type of pacemaker discharges impulses at a single, steady rate, regardless of the heart's own electrical activity?

Answers

Fixed rate peacemaker discharges electrical impulses at a single and steady rate regardless of the underlying electrical activity of the heart. Different peacemakers are stimulated in different areas of the heart. This peacemaker impulse is implanted next to the collarbone, the surgery is done under local anesthesia.

Final answer:

Fixed-rate pacemakers provide continuous electrical impulses at a preset rate to the heart, regardless of the heart's natural electrical activity, to maintain a regular heart rhythm.

Explanation:

Fixed-rate pacemakers are the type of artificial pacemakers that discharge impulses at a single, steady rate, regardless of the heart's own electrical activity. The natural pacemaker of the heart, the sinoatrial (SA) node, typically initiates an electrical impulse that leads to a coordinated heartbeat. However, when the heart's electrical system malfunctions, causing arrhythmias or fibrillation, a fixed-rate pacemaker is used to ensure the heart continues to beat regularly. These devices continuously deliver electrical impulses at a preset rate, without sensing the heart's inherent rhythm.

when hooke first used the term cell did he intend to have it apply to living material

Answers

The answer is no. Robert Hooke used a microscope to look at a piece of cork, not a living organism. He called the microscopic honeycomb cavities (tiny openings) visible through the microscope as cells. He named them cells because of the resemblance of the tiny openings to the monasteries of monks.

Yes, when Robert Hooke first used the term cell, he intended for it to be applied to living material as he was examining cork because it is derived from living plants.

When were the cells discovered?

The advancements in the design of the microscope resulted in the discovery of cells. The scientist Robert Hooke was interested in learning about the microscopic world. This is why, he improved the design of the compound microscope that was already existing, in the year 1665.

His design of the microscope utilized three different kinds of lenses and a stage light which was used to illuminate and enlarge the specimens. All these advancements allowed Hooke to see something so wonderful when he placed a slice of the cork under his advanced microscope.

His observations of this tiny and previously unseen world are recorded in his book named Micrographia. For him, the cork appeared as if it was made of tiny pores, which he called “cells” as these reminded him of the tiny rooms or cells in a monastery.

Therefore, when Robert Hooke first used the term cell, he intended for it to be applied to living material as he was examining cork because it is derived from living plants.

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CaCO3 is an example of which type of material?
Select one:
a. mixture
b. colloid
c. compound
d. element

Answers

compound :) there you go

According to a united nations university report, 62% of all ____ drugs have been derived from the discoveries of medicinal plants.

Answers

The answer is cancer drugs. According to a united nations University Report, almost 62 percent of all discovered and distributed cancer drugs have been made or derived from the discoveries of medicinal plants.  Cancer Drugs are usually made from Medicinal Plants, because they contain more effective effects than other substances.
According to a 2005 united nations university report, 62% of all cancer drugs were derived from the discoveries of bio prospectors. In spite of their economic and medicinal potential, less than 0.5% of the world's known plant species have been observed for their medicinal properties. Bio prospectors search tropical forests and other ecosystems to find plants and animals that scientists can use to make medicinal drugs.

During a food delivery inspection, you notice that half of the vegetables are spoiled. what should you do?

Answers

You should refuse the delivery of the food that is spoiled. Look closely at the remaining items to see if they are starting to spoil. Take a picture of the spoiled food if possible and document the delivery and what you did for the situation.
Final answer:

During a food delivery inspection, any spoiled food should be rejected due to health and safety concerns. Reporting the issue to superiors and suppliers is essential, as is documentation of the issue.

Explanation:

During a food delivery inspection, if you notice that half of the vegetables are spoiled, proper action must be taken. For health and safety reasons, spoiled food should never be accepted. In this case, you should reject the delivery and immediately report the problem to both your superior and the supplier. This is vital to ensure that quality standards are being met and to prevent potentially severe health consequences.

Additionally, documenting the problem, including taking photographs, can be useful for future reference and can potentially prevent similar incidents in the future.

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Many plants are dwarfed, but their few blossoms may be full-sized. Cushion plants, looking like ground-hugging clumps of moss, escape the strong winds blowing a few inches above them. Cushion plants may also have long taproots extending deep into the rocky soil. Many flowering plants of the __________ have dense hairs on stems and leaves to provide wind protection or red-colored pigments capable of converting the sun's light rays into heat. Some plants take two or more years to form flower buds, which survive the winter below the surface and then open and produce fruit with seeds in the few weeks of summer.

The plant adaptations described in the paragraph above would be found in what biome on Earth?

A) tundra
B) desert
C) glacier
D) deciduous forest

Answers

The plant adaptations described in the paragraph above would be found in Tundra biome on Earth.

What is tundra biome?

Of all the biomes, tundra is the coldest. Tunturi, which means treeless plain in Finnish, is the root of the word tundra. It is renowned for its landscapes that have been shaped by frost, extremely low temperatures,

limited precipitation, insufficient nutrients, and brief growth seasons. An organic substance that has died serves as a nutrient source. The two main nutrients are phosphorous and nitrogen. Phosphorus is produced through precipitation, while nitrogen is produced via biological fixation.

Therefore, The plant adaptations described in the paragraph above would be found in Tundra biome on Earth.

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The correct option is A i.e. tundra.

The plant adaptations described are typical of the tundra biome, where harsh conditions necessitate unique survival strategies such as low growth, long taproots, and protective hairs.

The plant adaptations described in the paragraph are characteristic of the tundra biome. The tundra is known for its harsh, cold, and windy conditions, where plants have developed specific adaptations to survive. These adaptations include low-growing forms to escape wind, long taproots to access deep nutrients, and dense hairs or red pigments to protect against wind and convert sunlight into heat.The tundra's short growing season requires plants to be efficient in nutrient storage and energy usage, as they often take multiple years to produce flowers and seeds. Examples of such plants include cushion plants, which hug the ground to avoid strong winds, and flowering plants with large blossoms but small vegetative parts to minimize exposure and conserve energy.

When a tautomeric shift occurs, the resulting nulceotide is a(n) __________ of the nucleotide prior to the shift?

Answers

It is the structural isomer. It is a type of isomerism in which particles with the same sub-atomic equation have distinctive holding designs and nuclear association, instead of stereoisomerism, in which sub-atomic bonds are dependable in a similar request and just spatial game plan contrasts.

What happens to ammonia when it isn’t taken up by plants?

Answers

Ammonia that isn't take up by plants may undergo a process called nitrification. Sorry if this doesn't help! 

The pancreas, an organ present in certain animals, produces enzymes used elsewhere in in the animals' digestive systems. which cell structure(s) might produce those enzymes?

Answers

Enzymes are normally proteins or modified proteins which are used to manage and control the rate of a reaction. When it comes to pancreatic enzymes, Amylase, Chymotrypsin, Lipase and Trypsin all are used to smooth the progress of the breakdown of foods we eat. Cytoplasm's are membrane bound organelles that include digestive and hydrolytic enzymes.

which structure will you find in a prokaryotic cell a. nucleus b. Golgi body c. cell membrane d. mitochondrion

Answers

it is c. cell memebrane

Answer:

Cell membrane

Explanation:

Nucleic acids ___

-combine to form carbohydrates?

-store and transmit hereditary information?

- are made up of amino acids ?

- form polysaccharides ?

Answers

Nucleic acids store and transmit genetic information that you inherited from your parents.

B. -store and transmit hereditary information? 

Nucleic acids store and transmit genetic information that you inherited from your parents.

B. -store and transmit hereditary information?

If there are three nucleotides coding for each amino acid and there are 20 amino acids, are there just 20 specific codons? if not how many are there?

Answers

15 amino acids hope this helps

Which of the following arising out of mass extinction serves as an advantage to nature?

Answers

New, more adaptable species flourish, replacing the extinct species.
The selection pressures before the extinction tend to favor a certain type of organism and the sudden shift in conditions help others move up the food chain.

A tissue in a mouse contains two types of cells: one that divides rapidly and one that divides more slowly. the most likely difference between these two cell types is that the slow-dividing cell type spends more time in _______ phase.

Answers

The most likely difference between these two cell types is that the slow-dividing cell types spends more time in G2 phase of interphase.

Which statements below describe the changes that molecules undergo when heat is applied during a phase change? (select all that apply.)?

Answers

The heat energy is used to move molecules further apart from each others.

When heat is applied, several phases of change occur , this is also known as a change of state. For example, when heating a liquid to make it a gas, also known as evaporation, you are making the spaces between the molecules even bigger because of the heat it suffered.




To provide oxygen to the cells and remove carbon dioxide is the purpose of what anatomical system?

Answers

If Organ Systems:

Respiratory System

If Within Cells:

Mitochondria

The exchange of gaseous is done by the respiratory system, it provides oxygen to the cells and removes carbon dioxide.

What is the respiratory system?

The respiratory system is an organ system that has two pairs of lungs and is surrounded by intercostal muscles. Both lungs exchange gases from cells.

The air breathes into the lungs by a nasal passage in the nose and also breathes out through it. Inhalation and exhalation are done by creating pressure against atmospheric pressure.

Gases travel through the nasal passage and to the bronchi, which further extended into bronchioles where actual oxygen and carbon dioxide exchange takes place.

Therefore respiratory is an anatomical system for the purpose to provide oxygen to cells and remove carbon dioxide from them.

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What abitotic factor was used to classify regions into plant hardiness zones?

Answers

The abiotic factor which was used to classify regions into plant hardiness zones is Temperature.

What are Abiotic factors?

These are the non living component of the ecosystem and examples include water, temperature etc.

The average annual minimum winter temperature is what it taken into consideration when the zones are being classified with zone 1 being the coldest and zone 13 as the hottest.

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Final answer:

Temperature is the abiotic factor used to classify regions into plant hardiness zones. It's crucial for determining which plants can survive in those zones, influencing critical processes like seed dormancy and germination.

Explanation:

The abiotic factor used to classify regions into plant hardiness zones is temperature. Plant hardiness zones are defined based on the minimum temperatures that plants can tolerate. The classification helps gardeners and growers determine which plants are most likely to thrive at a location. The role of temperature as an abiotic factor is crucial for plant growth and survival, influencing processes such as seed dormancy and germination.

In studies like the one by Argyris et al. (2008), it was reported that genetic variation for lettuce seed thermoinhibition is associated with temperature-sensitive expression of abscisic acid and other hormones, which can directly affect seed germination rates. Supported by the research, it's suggested that plates with lower levels or absence of abscisic acid likely show the highest rate of germination since it is associated with the inhibition of radicle emergence.

An individual displaying a larger than normal number of ldl receptors is _____________ likely to develop atherosclerosis.

Answers

Less: Individuals with larger numbers of LDL receptors are less likely to develop atherosclerosis. LDL receptors on the liver are responsible for uptake of cholesterol from the blood and regulate cholesterol synthesis. Those with a higher number of receptors will clear cholesterol quickly, lower levels in the blood, and decrease chances of atherosclerosis.

Having more LDL receptors than normal decreases the likelihood of developing atherosclerosis, as these receptors help clear LDL cholesterol from the bloodstream.

An individual displaying a larger than normal number of LDL receptors is less likely to develop atherosclerosis. LDL receptors on liver cells are crucial for removing low-density lipoprotein (LDL) cholesterol from the bloodstream. In conditions like familial hypercholesterolemia, individuals have mutations leading to fewer or malfunctioning LDL receptors, leading to dangerously high levels of LDL cholesterol and a higher risk for atherosclerosis. Conversely, more functional LDL receptors would enhance the clearance of LDL cholesterol from the blood, reducing the risk for atherosclerosis development.

The nurse is preparing to administer a trivalent influenza vaccine (tiv) to a 70-year-old patient with chronic obstructive pulmonary disease (copd). while reviewing the patient's immunization record, the nurse notes that the patient received a pneumococcal polysaccharide vaccine (ppv23) 10 years prior. which action does the nurse take?

Answers

The nurse should provide TIV and then recommend to get a moment PPV23. Proof that a moment PPV23 is useful for forestalling pneumonia in patients with unending lung infection if over 5 years have gone since the underlying PPV23. The medical caretaker ought to propose this to the patient or the supplier. Directing the TIV and reminding the patient to get this yearly is right, yet the medical caretaker ought to suggest a moment PPV23 since this patient meets criteria for this sponsor. All patients more than 50 years and those with incessant lung sickness ought to get this season's cold virus antibody every year. Patients more than 50 years old can't get the live infection immunization.

Earth Science

Which process within the rock cycle operates at the Earth's surface?

Answers

Erosion and sedimentation occur at the Earth's surface with weathering and processes like running ice, water, and wind. 

Answer:

weathering

Explanation:The events of the rock cycle take place at the Earth's surface and within the Earth's interior. Weathering and erosion play a significant role in the rock cycle and occur at the surface.

Name the 4 main atmospheric factors that influence weather?

Answers

Solar Distance:
The solar distance is the distance between the Earth and the Sun. Since the Earth rotates, the distance changes. 

Air Pressure:
The air pressure/atmospheric pressure is the pressure spent by the weight of the atmosphere. 

Latitudinal Location:
the latitudinal location is used, with longitude, to specify the exact location of features on the Earth surface. 

Water presence:
The water presence is the existence of water. 

There are many factors that influence the weather but the 4 main ones are solar distance, air pressure, latitudinal location, and water presence

I hope this helps!

Sunlight, wind, humidity, and temperature are the four atmospheric factors that can influence weather.

Weather can be defined as the state of the atmosphere in accordance with the heat or coldness, dryness, or cloudiness. The state of weather is influenced by the four atmospheric factors that are sunlight, wind, humidity, and temperature. Sunlight is the key component of the atmosphere which affects the state of the weather. The region which receives low sunlight is colder and the region which receives more sunlight is hotter and can be in the form of desert. The wind takes away the moisture in the air away from a region to another region. Humidity can be defined as the moisture content in the air. It is responsible for bringing rain in the region. Temperature is influenced by the sunlight, higher rate of evaporation of water, and others. The region which receives more sunlight is expected to have higher temperature over the region which receive low sunlight.

Hence, sunlight, wind, humidity, and temperature are the four atmospheric factors that can influence weather.

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in the chain, which data show a possible source of error Tyr-Leu-Pro-Met

Answers

the chain is not in order it should be pro-met-leu-tyr

The position of Met seems incorrect.

The amino acid sequences of all proteins begin with Met because it is the amino acid that is attached to the anticodon for the AUG start codon.

It looks like the student might have worked in a backward direction for transcription.

An adolescent is diagnosed with iron deficiency anemia. after emphasizing the importance of consuming dietary iron, the nurse asks him to select iron-rich breakfast items from a sample menu. which selection demonstrates knowledge of dietary iron sources?

Answers

Foods like ham and eggs would be a good source of dietary iron. Iron is found in red meats and eggs, nuts, legumes, and leafy greens. Consuming a larger amount of these foods will increase the amount of iron in the body, alleviating the deficiency.

Prenatally, how many nerve cells were formed in your brain per minute?

Answers

The total estimated number of nerve cells or neurons in a fully developed brain is approximately 1 trillion. During the prenatal life or the period prior birth, the brain produces roughly 2.5 million neurons per minute. This makes the most critical and vital stage of human brain development since almost all of the nerve cells were generated under this period.
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