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Ask QuestionPosted by Shabib Raza 4 years, 11 months ago
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Posted by Aishwarys Joshi 4 years, 11 months ago
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Rajkumar Rocky 4 years, 11 months ago
Abhinay Verma 4 years, 11 months ago
Posted by Mami Jinhlong 4 years, 11 months ago
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Sia ? 4 years, 11 months ago
Plasma and red blood cells transport carbon dioxide. This is because they are readily soluble in water.
- Through plasma:
About 7% of CO2 is carried in a dissolved state through plasma. Carbon dioxide combines with water and forms carbonic acid.
{tex}CO_2\;+H_2O\rightarrow\underset{Carbonic\;acid)}{H_2CO_3}{/tex}
Since the process of forming carbonic acid is slow, only a small amount of carbon dioxide is carried this way. - Through RBCs:
About 20 – 25% of CO2 is transported by the red blood cells as carbaminohaemoglobin. Carbon dioxide binds to the amino groups on the polypeptide chains of haemoglobin and forms a compound known as carbaminohaemoglobin. - Through sodium bicarbonate:
About 70% of carbon dioxide is transported as sodium bicarbonate. As CO2 diffuses into the blood plasma, a large part of it combines with water to form carbonic acid in the presence of the enzyme carbonic anhydrase. Carbonic anhydrase is a zinc enzyme that speeds up the formation of carbonic acid. This carbonic acid dissociates into bicarbonate (HCO3–) and hydrogen ions (H+).
{tex}\mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O} \stackrel{\text { Carbonicanhydrase }}{\longrightarrow} \mathrm{H}_{2} \mathrm{CO}_{3}{/tex}
{tex}\mathrm{H}_{2} \mathrm{CO}_{3} \frac{\text { Carbonic }}{\text { anhydrase }} \mathrm{HCO}_{3}^{-}+\mathrm{H}^{+}{/tex}
Posted by Tannu Madaan 4 years, 11 months ago
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Yogita Ingle 4 years, 11 months ago
Mitochondria are virtually the only colored parts of the cell.
If it were not for the melanin in our skin, the myoglobin in our muscles, and the hemoglobin in our blood, we would be the color of mitochondria--that is, a brownish red.
Posted by Manish Kharera 4 years, 11 months ago
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Meghna Thapar 4 years, 3 months ago
The main difference between freshwater and marine life is the habitat they come from in the wild. Freshwater fish live in streams, rivers and lakes that have salinity of less than 0.05 percent. Depending on the species, fish can survive in temperatures ranging from 5 and 24 degrees Celsius. They can adapt to a change in habitat, like the rise and fall in water levels, temperature and oxygenation levels. Marine life refers to fish living in oceans and seas. These are also known as saltwater fish because they can only stay alive in waters with high salinity levels. A marine animal's habitats include coral reef and seagrass bed.
Posted by Neelam Singh 4 years, 11 months ago
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Tanveer Yaseen 4 years, 10 months ago
Gaurav Seth 4 years, 11 months ago
The endocrine system is composed of several endocrine glands. A ductless gland is called endocrine gland. Endocrine gland secretes its product directly into the bloodstream. Hormones are produced in the endocrine glands.
Posted by Mohd Suhail 4 years, 11 months ago
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Tannu Madaan 4 years, 11 months ago
Yogita Ingle 4 years, 11 months ago
- Certain adaxial epidermal cells along the veins modify themselves into large, empty, colourless cells, which are called bulliform cells. Example- grass.
- When the bulliform cells in the leaves have absorbed water and are turgid, the leaf surface is exposed and when they are flaccid due to water stress, they make the leaves curl inwards to minimise water loss.
Posted by Mohd Suhail 4 years, 11 months ago
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Sia ? 4 years, 11 months ago
|
Sr.No. |
SER |
RER |
|
1. |
Ribosomes are absent. |
Ribosomes occur over the surface of RER. |
|
2. |
Synthesis is specialised to synthesize lipids and steroids. |
Synthesis is specialised to synthesize proteins. |
|
3. |
The products do not pass into lumen. |
The products pass into lumen of E.R. for transport to other places. |
| 4. | Less stable | More stable |
| 5. | Found in Epithelial cells, Intestinal cells, Sarcoplasmic Reticulum | Found in Pancreatic Exocrine cells |
Somya Mehta 4 years, 11 months ago
Posted by Mohd Suhail 4 years, 11 months ago
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Sia ? 4 years, 11 months ago
Virus is an obligate intracellular parasite which can reproduce only by invading and taking over other cells as they lack the cellular machinery for self reproduction. Viroids are subviral, smallest known agents of infectious disease. The term viroid was coined by T.O
Viroids are free RNA molecules of low molecular weight without any protein coat while viruses can have either RNA or DNA molecules encapsulated in a protein coat. Viroids are smaller in size than viruses.
Posted by Mohd Suhail 4 years, 11 months ago
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Posted by Mohd Suhail 4 years, 11 months ago
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Posted by Mohd Suhail 4 years, 11 months ago
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Yogita Ingle 4 years, 11 months ago
Spermatophore: The sperms produced from testes, while the cockroach is still young, are brought by the vasa deferentia into the seminal vesicles for storage. The sperms in the seminal vesicles are glued together in the form of bundles called spermatophores.
Posted by Mohd Suhail 4 years, 11 months ago
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Tanveer Yaseen 4 years, 10 months ago
Posted by Sudhanshu Pandey 4 years, 11 months ago
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Gaurav Seth 4 years, 11 months ago
Chromosomes are found in the nucleus of every cell. Different forms of life have a different number of chromosomes in each cell. Humans have 23 pairs of chromosomes for a total of 46 chromosomes in each cell.
Posted by Sudhanshu Pandey 4 years, 11 months ago
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Tannu Sharma 4 years, 11 months ago
Posted by Pratima Ramudamu 4 years, 11 months ago
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Posted by Mohammad Amaan 4 years, 11 months ago
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Meghna Thapar 4 years, 2 months ago
The chemiosmotic hypothesis was proposed by Peter Mitchell. This hypothesis stated that a proton-motive force was responsible for driving the synthesis of ATP. In this hypothesis, protons would be pumped across the inner mitochondrial membrane as electrons went through the electron transfer chain. The chemiosmotic hypothesis suggests that the action of ATP synthase is coupled with that of a proton gradient. ... It is the action of the proton gradient that causes a proton motive force that allows ATP synthase to phosphorylate ADP and inorganic phosphate to ATP.
Posted by निजाम खान 4 years, 11 months ago
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Mohammad Amaan 4 years, 11 months ago
Posted by Mohammad Amaan 4 years, 11 months ago
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Posted by Srirangam Priyanka 4 years, 11 months ago
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Posted by Mohd Suhail 4 years, 11 months ago
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Mehak Gautam 4 years, 11 months ago
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Shrutika Bhoir 4 years, 11 months ago
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Mehak Gautam 4 years, 11 months ago
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Jassi Midha 4 years, 11 months ago
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Posted by Bhagirath Sonawane 4 years, 11 months ago
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Mehak Gautam 4 years, 11 months ago
Posted by Anjali Kumari 4 years, 11 months ago
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Vivek Mishra 4 years, 11 months ago
Yogita Ingle 4 years, 11 months ago
A chromosome is an organized structure of DNA and protein found in the nucleus of cells. It is a single piece of coiled DNA containing many genes. These are considered to be the vehicles of heredity as they carry genes.
Posted by Shibashish Meher 4 years, 11 months ago
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Riya Trivedi 4 years, 11 months ago
Posted by Ritik Kishor 4 years, 11 months ago
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Riya Trivedi 4 years, 11 months ago
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