Questions pertaining to red blood cells, or erythrocytes, the most common type of blood cell that is responsible for delivering oxygen throughout the body.

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Plant cell question in age 12 science test Part II

I'm a parent and I think the teacher had been a bit harsh with marking most of these questions but can someone help me answer the very last question on the paper please (where someone has written SP ...
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1answer
64 views

Why is the Pentose Phosphate Pathway so active in erythrocytes?

Is it because glyceraldehyde -3-phosphate (a molecule which when enter glycolysis help produce ATP through substrate level phosphorylation) can be prepared without losing an ATP through this process?
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1answer
20 views

distribution of some injected materials/medicines through blood vessels [closed]

Fastest distribution of some injected materials/medicines & with no risk of any kind can be achieved by injecting it into - artery or vein?
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27 views

Can overhydration cause a drop in hemoglobin?

I am trying to understand the mechanism by which overhydration affects hemoglobin and oxygen intake. Does the water first depletes the buffers such as ferritin storages? What about haematocrits? In ...
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1answer
31 views

What is the reason for 'microcytic' anaemia?

I know the causes for microcytic anaemia are Fe deficiency, prolonged inflammation, Thalessemia, Sideroblastic etc. All these logically point to a decrease in Haemoglobin synthesis - either Haeme or ...
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1answer
43 views

Blood antigens and immune response

In my textbook, the definition of an antigen is written as follows: Antigen: A substance that the body recognises as foreign and that can evoke an immune response The following image also confused ...
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1answer
51 views

How do stem cells produce 200 billion new blood cells every day? Does 1 stem cell division result in production of just 1 blood cell or many?

It is given on wikipedia that everyday 200 billion new blood cells are produced in the bone marrow. I want to understand how this is achieved. Does one hematopoietic stem cell's single division result ...
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1answer
113 views

Do camels have nucleated RBCs or enucleated RBCs?

Most mammals have enucleated RBCs as an adaptation to facilitate the transport of oxygen. My text says that camels and llamas are exceptions to these. I was wondering why they are exceptions, and the ...
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18 views

Coagulation of blood in small intestine due to trypsin

Trypsin is secreted in the small intestine to convert proteins into dipeptides i.e. to carry out digestion of proteins. However, it is also a coagulating agent which coagulates blood by hydrolysing ...
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1answer
102 views

Identifying an Unknown Blood Type [closed]

The following case study has a student working with blood samples to identify their blood types (A, B, AB, and O). Consider the situation and answer the questions. A student is given eight ...
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1answer
43 views

Why does ESR have to be waited for one hour?

It is said that the length of the column of clear plasma in a narrow tube left by erythrocytes which gradually sediments after one hour is the measure of ESR(erythrocyte sedimentation rate). Its ...
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0answers
33 views

A question on Iron deficiency Anemia [closed]

I have a low iron levels. As per the blood tests, my iron levels are 56.3 ug/dl, which is well below the recommended level of 70-180 for men. But my hemoglobin is 15.6 g/dl and RBC count as 5.12 ...
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1answer
23 views

differentially expressed genes of the treated with estradiol samples

I did differential analysis on samples treated (G1E-ER4) with estradiol (differentiation induced by estradiol) and control (G1E). The genes that I gor as differentially expressed in G1E-ER4 showed ...
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1answer
306 views

What is the surface area to volume (SA:V) ratio of a red blood cell?

According to this author, red blood cells (RBCs) are biconcave to allow easier bending. The standard explanation in biology for higher surface area to volume ratios is that it improves reaction rates. ...
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2answers
201 views

Are erythrocytes lysed during alpha hemolysis?

Wikipedia says: When alpha hemolysis (α-hemolysis) is present, the agar under the colony is dark and greenish. Streptococcus pneumoniae and a group of oral streptococci (Streptococcus viridans or ...
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2answers
145 views

Are oxygen and carbon dioxide simultaneously present in red blood cells during gas exchange?

From my understanding, the process that displaces the carbon dioxide and oxygen in our erythrocytes and lungs is diffusion. I've been taught that diffusion is the net movement of particles from a ...
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1answer
705 views

How can mammalian red blood cells live without a nucleus?

Even though they have a shorter lifespan than other varieties of cells, I would think that 120 days without a nucleus is still quite a long time.
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1answer
473 views

Do Red blood cells(mammals) really have no organelles?

I have read that mammal mature Red blood cells lack most organelles, including mitochondria, golgi apparatus and an ER. ( https://en.wikipedia.org/wiki/Red_blood_cell#Mammalian_erythrocytes ) This ...
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1answer
39 views

Methylation Data for Erythrocytes (Red Blood Cells)?

Why is it that white blood cells (leukocytes) are highly characterized in DNA methylation pure cell line profiling, but I can't find any profiles of red blood cells (erythrocytes)? Is blood considered ...
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1answer
31 views

How is Glycophorin A and straphylococcal related to Escherichia coli and what does readily purified mean in this context?

I am reviewing the paper "Glycophorin A Dimerization Is Driven by Specific Interactions between Transmembrane Alpha-Helices." There is a statement in the abstract which I don't understand: "The ...
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1answer
843 views

What happens to the red blood cell in CaCl₂ solution?

Here's the problem: One red blood cell is placed in a hypertonic solution of NaCl, another is placed in a solution of CaCl2 equimolar with the NaCl solution. What would you expect to happen and why? ...
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2answers
4k views

RBCs have no mitochondria but still metabolize glucose?

I have read that red blood cells (RBCs) metabolize glucose. However they don't have any mitochondria because there is just so much hemoglobin that there is no room for mitochondria without expanding ...
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0answers
38 views

Some kind of better oxygen-transport protein or something… Can you help me find it?

I remember reading about artificial or man-made, oxygen-transport protein that is somehow an improvement on hemoglobin, and that it is possibly immune to sickle-cell anemia, or something... But I ...
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1answer
130 views

Can we produce synthetic red blood cells lacking antigens?

I had an idea come to me during Biology class and I immediately asked my teacher, but she couldn't really answer the question, so I'll ask it here. What are the limiting factors in the production of ...
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3answers
830 views

Do other animals have different blood types?

Humans have the ABO and Rhesus blood typing systems. I have two questions about it: Why have we evolved these blood types? Do other animals have different blood types as well?
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198 views

How does Hemocytoblast constantly get formed into so many blood cells and yet remains there in the bone marrow throughout the lifetime?

I mean, Hemocytoblast is a stem cell which is constantly being differentiated into daughter cells and leads to formation of all the blood cells (having short and limited life spans), so how come those ...
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26 views

How does so many replicas of different kinds of blood corpuscles form from different cells in the bone marrow? [closed]

I am interested in the process by which so many identical blood corpuscles form from an entirely different cell (within the bone marrow) altogether. How does these cells form?
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1answer
96 views

What are the advantages of blood's redness? [closed]

Although this page (http://evolution.berkeley.edu/evosite/evo101/IIIE5aNotadaptation.shtml) denounces the idea that blood's redness is not an adaptation, I remain inquisitive on the matter since no ...
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1answer
4k views

Why can blood group O be given to all blood groups?

Blood group O has antibodies against antigens A and B. Blood group A has A antigen. If someone with blood group A receives donor blood with group O, then anti-A antibodies in the donor blood should ...
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1answer
1k views

Besides hemoglobin, what proteins are present in red blood cells?

I knew that mature red blood cells (RBCs) lacked nuclei, but I wasn't aware until just now that they also lacked ribosomes and mitochondria. Most cells in the human body all contain a common laundry ...
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1answer
308 views

Can one use a hemocytometer on a compound upright microscope?

I'm posting this as a follow-up on What to look for when buying a light microscope?. The answerer states that you would need to use a an inverted microscope to count cell in the hemocytometer(counting ...
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2answers
4k views

Fate of erythrocytes after splenectomy

The spleen is considered a graveyard for red blood cells. So in case of Splenectomy (complete surgical removal of the spleen), what would be the fate of red blood cells? Would this cause Polycythemia?
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4answers
3k views

Why do we need red blood cells?

From what I know, the main function of red blood cells is hemoglobin transport. So, why do we need cells packed with hemoglobin: why can't it travel freely in the bloodstream? My own thoughts were: ...
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2answers
7k views

What happens when you mix type A with type B blood (and v.v)

What happens when you mix different blood types that are not compatible? For example, if a patient has type A blood and receives type B blood, or v.v.?
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What is the difference between regular blood, a woman's and a virgin's menstrual blood?

There are many stories that blood contains the life-force energy and specifically menstrual (period) blood has always been a feature of many rituals and some ancient Sumerian tablets mentioned that ...
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1answer
54 views

Stem cell that can pass through blood vessel

I know that blood cells can pass through the smallest of capillaries, but I was wondering is it possible for stem cells to pass through the smallest of capillaries? In other words, is it possible for ...
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2answers
473 views

Do females living on mountains have more RBCs than a normal male [closed]

I got this doubt when I was studying about haematocrit value. According to my NCERT textbook males have greater number of RBCs than females. But who will have more RBCs when comparing a normal male ...
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2answers
414 views

Blood Type Compatibility [closed]

It should be that because O+ blood(which is my blood type) has all antibodies but no antigens that all other blood types including O- would be incompatible making O not a universal donor so why is O ...
2
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1answer
60 views

Why Rh conflict happen but no ABO conflicts?

I wonder why Rhesus conflict can happen during pregnancy and mother can make antibodies against Rh protein (I think the correct name is D protein), but it doesn't happen if mother has different ABO ...
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2answers
533 views

Can excessive carbonated drink consumption lead to elevated red blood cell levels?

I've recently had a blood test and the results displayed elevated levels of erythrocytes as well as hemoglobin. (As a result my hematocrit levels were also above average) At my workplace there is a ...
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3answers
306 views

If everybody DNA is different then how blood can match even with matching blood group?

We know that everybody's DNA pattern is different in the world. Then how can ´we transfer blood from one person to another person and this person can survive ?
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85 views

What are these white areas of coronary thrombosis?

Please, see the picture where the areas (1,2,3) look little yellow: I think these areas are fat, platelets and/or air. I think 3 is fat/platelets while 1 is air/platelets. There also exists white ...
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1answer
132 views

Where can I find the metabolic network for the human erythrocyte?

Where can I find the metabolic network of the human erythrocyte (red blood cell), in SBML format? The red blood cell metabolic network is a model that's usually employed in the literature [see refs ...
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1answer
130 views

Blood group probability question

My answer ( after rounding off) is 9% -100( 0.75 X 0.25 X 0.5) but the answer given is 22 % Am I correct ?
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1answer
64 views

Erythroblastosis Foetalis

If Rh- mother has Rh+ baby, the mother can become sensitized during first pregnancy and then if subsequent fetuses are also Rh+, there can be eryhtroblastosis foetalis. I read that if mother is O- ...
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2answers
4k views

Are mature erythrocytes prokaryotic?

Mature mammalian erythrocytes have all the characteristics of a eukaryotic cell except that they don't have a nucleus, they don't have any cell organelles. Does this mean that erythrocytes are ...
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2answers
1k views

Why does the body not recycle red blood cells?

This question is out of curiosity. The life expectancy of a red blood cell (RBC) is approximately 3 months, and then RBCs are disposed of. Why does the body opt to build new red blood cells rather ...
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2answers
2k views

How do people who have lost both of their legs produce red blood cells?

As far as I know, just leg bones produce red blood cells. So, how people who lost their both legs produce red blood cells?
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Iron deficiency anemia symptoms explanation

In my classes and on the internet, brittle nails and dry hair (or hair loss) are described as symptoms of iron deficiency anemia, but none explains the cause of such symptoms. Does anyone have any ...
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How much can be said about behaviour (future) based on bloodgroup?

My bloodgroup for example is A+. How much information is knowing my bloodgroup? How much information can be known from a blood sample? I expect you to be able to clone if known a complete DNA sequence ...