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what is systematic

Posted by Shushma Vishwakarma 8 years, 1 month ago

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Khushi Kothale 8 years, 1 month ago

Systematics is the scientific study of similarities and differences among different types of organisms and it also includes their identification, nomenclature, and classification

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Homologous

Posted by Aman Bhatti 8 years, 1 month ago

CBSE > Class 11 > Biology

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Priya Goswami 8 years, 1 month ago

Homologous are those which are functionally same but have different structures.

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Sugarcane is a monocotyledonous plant. It has developed an additional C4 cycle also. Carboxylation in sugarcane : (a) Three molecules of RuBP (Ribulose 1-5 biphosphate) reacts with three molecules of carbon dioxide to produce short lived six-carbon intermediates. This process is called carboxylation and involve the enzyme RuBP carboxylase (or Rubisco). (b) The 6 carbon intermediate are immediately broken down into 6 molecules of 3 phosphoglyceric and (3PGA) a 3 carbon compound. Rubisco is a large protein molecule. © It comprises 16% of the chloroplast protein and is the most important protein on earth

Posted by Aman Bhatti 8 years, 1 month ago

CBSE > Class 11 > Biology

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Short type and long type

Posted by Ashu Yadav 8 years, 1 month ago

CBSE > Class 11 > Biology

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Posted by Renu Rai 8 years, 1 month ago

CBSE > Class 11 > Biology

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What is the difference between myelinated and non myelinated neurons

Posted by Sakshi Kashyap 8 years, 1 month ago

CBSE > Class 11 > Biology

2 answers

Kajalpreet Kaur Randhawa 8 years, 1 month ago

Myelin sheath present in myelinated but absent in non myelinted

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Sahana M 8 years, 1 month ago

Myelinated has schawn cell but absent in unmylenated

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External factor which influence the photosynthesis

Posted by Madan Gopal 8 years, 1 month ago

CBSE > Class 11 > Biology

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What is kranz anatomy? What are plant having kranz anatomy called? How does the plant benifit by having such kind of anatomy?

Posted by Meemnam Subba 8 years, 1 month ago

CBSE > Class 11 > Biology

1 answers

Aditi Sharma 8 years, 1 month ago

Kranz anatomy is a special type of anatomy seen in only some plants which are known as C4 plants as the product of CO2 fixation is a 4C compound. Kranz means wreath. In kranz anatomy special cells also known as bundle sheath cells are present surrounding the vascular bundle. The mesophyll cells lack the enze RUBISCO and hence no photorealistic takes place in C4 plants . While the bundle sheath cells have that enzyme and hence Calvin cycle takes place in tbundle sheath cells.Refer other sources for detailed explanation ?

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What types the cell constitutes the cortex

Posted by Vishal Vishal 8 years, 1 month ago

CBSE > Class 11 > Biology

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Parth Sarthi Gupta 8 years, 1 month ago

Dead cells

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What are fungi

Posted by Tanu Gurjar 8 years, 1 month ago

CBSE > Class 11 > Biology

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Give three uses of auxin

Posted by Akshay Jat 8 years, 1 month ago

CBSE > Class 11 > Biology

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Ankitha R 8 years, 1 month ago

1.promotes the flowering in pineapples 2.prevents premature fall of leaves and fruits 3. Induce parthenocarpy

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Name the harmones which regulates the activity of heart

Posted by Anju Sharma 8 years, 1 month ago

CBSE > Class 11 > Biology

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Explain kreb cycle in brief

Posted by Sheetal R 8 years, 1 month ago

CBSE > Class 11 > Biology

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Parth Sarthi Gupta 8 years, 1 month ago

Kreb cycle also known as the C4 cycle is a method to convert a C3 compound pyruvate into a four carbon compound succinic acid by the uptake of information of ATP and other energy career molecules

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What is vasa recta

Posted by Pragati Singh 8 years, 1 month ago

CBSE > Class 11 > Biology

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Prince Jaat 8 years, 1 month ago

The vasa recta, the capillary networks that supply blood to the medulla, are highly permeable to solute and water. As with the loop of Henle, the vasa recta form a parallel set of hairpin loops within the medulla. Not only do the vasa recta bring nutrients and oxygen to the medullary nephron segments but, more importantly, they also remove the water and solute that is continuously added to the medullary interstitium by these nephron segments. The ability of the vasa recta to maintain the medullary interstitial gradient is flow dependent. A substantial increase in vasa recta blood flow dissipates the medullary gradient. Alternatively, decreased blood flow reduces oxygen delivery to the nephron segments within the medulla. Because transport of salt and other solutes requires oxygen and adenosine triphosphate, reduced medullary blood flow decreases salt and solute transport by nephron segments in the medulla. As a result, the medullary interstitial osmotic gradient cannot be maintained, which also reduces the ability to concentrate the urine.

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Diff. Forms by which ammonia is eliminated

Posted by Pragati Singh 8 years, 1 month ago

CBSE > Class 11 > Biology

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Describe synaptic knob

Posted by Iqra Ali 8 years, 1 month ago

CBSE > Class 11 > Biology

1 answers

Prince Jaat 8 years, 1 month ago

A synapse is a junction between two neurons. Neurons are basically Nervous System Cells. They pass impulses from one place to another. E.G. They pass impulses from your arm to your brain allowing you to feel if you are being touched. Synapses are useful for many reasons but I’m not going to go into that. The neurotransmitters indirectly pass on the impulse from one neuron to another. The large bulge on the presynaptic neuron is the synaptic knob.

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How is urine formed

Posted by Pragati Singh 8 years, 1 month ago

CBSE > Class 11 > Biology

1 answers

Prince Jaat 8 years, 1 month ago

There are three steps/ process involved in the formation of urine , Glomerular Filtration Selective Reabsorption Tubular Secretion Filtration in the kidney through glomerulus The substance get filtrate in glomerulus is similar to the component of plasma with exception of proteins and blood cells. Blood cells, plasma proteins and other large molecules are too large in size to filter and remain in the capillaries. Process of filtration take place through glomerulus & glomerulus capsule through semipermeable membrane. Water and other small molecules readily get absorbed. Why filtration take place in the body? Filtration occure due to difference between the blood pressure in the glomerulus & filtrate pressure in glomerular capsule. The volume of filtrate formed by both kidneys each minute is called glomerular filtration rate. In a healthy adult, Normal gfr is about 125ml/min. i.e. 180 litres of filtrate is formed of which only 1% get excreted as urine. Selective Reabsorption Process of reabsorption is done through two processes, Active Transport Passive Transport Active transport take place at a carrier site in the epithelial membrane by using chemical energy to transport the substance. Some ions, Chloride and sodium absorption in the kidney done by both active and passive mechanism. Water, electrolytes and organic nutrients are passively absorbed in renal tubule. Renal tubule are of distal convoluted tubule and proximal convoluted tubule.

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Main pts in structure of excretory system like Bowman's capsule and what are others

Posted by Pragati Singh 8 years, 1 month ago

CBSE > Class 11 > Biology

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What is column of bertini and malphigian body

Posted by Pragati Singh 8 years, 1 month ago

CBSE > Class 11 > Biology

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What are phodocytes

Posted by Pragati Singh 8 years, 1 month ago

CBSE > Class 11 > Biology

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Why liver is called hepatic portal system

Posted by Rohit Yadav 8 years, 1 month ago

CBSE > Class 11 > Biology

1 answers

Pragati Singh 8 years, 1 month ago

It is a unique vascular connection exists between digestive tract and liver

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What is competitive inhibition???

Posted by Kriti Srivastava 8 years, 1 month ago

CBSE > Class 11 > Biology

1 answers

Parth Sarthi Gupta 8 years, 1 month ago

Competitive inhibition is a term for defining the concept of recessive and dominant genes that we studied in class 9th thank you

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Glycolysis

Posted by Muskan Dhakar 8 years, 1 month ago

CBSE > Class 11 > Biology

2 answers

Parth Sarthi Gupta 8 years, 1 month ago

Glycolysis or the C3 cycle is a method followed in the plants to convert the six carbon compound glucose into a 3 carbon compound producing energy carrier molecules like ATP and NADH in the process

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Deeshika Yadav 8 years, 1 month ago

The conversion of glucose into pyruvic acid. It is catalyst by no. Of enzymes like hexokinase

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All living phenomena are due ti the underlying interaction. Justify ?

Posted by Shivam Sharma 8 years, 1 month ago

CBSE > Class 11 > Biology

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Investigatory project

Posted by Sanjay Sanjay 8 years, 1 month ago

CBSE > Class 11 > Biology

1 answers

Mohit Fdk 8 years, 1 month ago

The projects from ur book on any topic of ur choice

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What r puff balls??

Posted by Ashita Bhorkade 8 years, 1 month ago

CBSE > Class 11 > Biology

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Mohit Fdk 8 years, 1 month ago

A puffball is a member of any of several groups of fungi in the division Basidiomycota. The puffballs were previously treated as a taxonomic group called the Gasteromycetes or Gasteromycetidae, but they are now known to be a polyphyletic assemblage

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Name the basic unit of chitin

Posted by Sumit Meel 8 years, 1 month ago

CBSE > Class 11 > Biology