What would be the consequences of a deficiency of haemoglobin in our bodies?
Blood has components- Red blood corpuscles, White blood corpuscles, platelets and Plasma. Red blood cells are the most abundant cells in the human body and they contain an oxygen- carrying pigment, the haemoglobin, in their cytoplasm. Haemoglobin is a conjugated protein, consists of globin and contains a non- protein group called heme; hence the name haemoglobin is given. Due to high partial pressure of the oxygen in the lungs, haemoglobin takes up the oxygen molecules and changes up into the bright red colour of the pigment, called Oxyhaemoglobin; and transport oxygen to the blood cells.
The deficiency of haemoglobin in our body affects the oxygen uptake capacity of blood and this can lead to the deficiency of oxygen in the cells. By this deficiency, it leads to the disease anemia. Anemia can be caused by many reasons including loss of oxygen, loss of blood, destruction of red blood cells or failure in formation of blood etc.
Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans?
How is the amount of urine produced regulated?
What are the different ways in which glucose is oxidised to provide energy in various organisms?
What criteria do we use to decide whether something is alive?
The breakdown of pyruvate to give carbon dioxide, water and energy takes place in
(a) cytoplasm. (c) chloroplast.
(b) mitochondria. (d) nucleus.
What are the differences between autotrophic nutrition and heterotrophic nutrition?
What are the components of the transport system in highly organised plants?
What are outside raw materials used for by an organism?
What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
Where do plants get each of the raw materials required for photosynthesis?
Did Döbereiner’s triads also exist in the columns of Newlands’ Octaves? Compare and find out.
What is a good source of energy?
What are trophic levels? Give an example of a food chain and state the different trophic levels in it.
What changes can you make in your habits to become more environment-friendly?
What is the difference between a reflex action and walking?
What is the importance of DNA copying in reproduction?
If a trait A exists in 10% of a population of an asexually reproducing species and a trait B exists in 60% of the same population, which trait is likely to have arisen earlier?
Why should a magnesium ribbon be cleared before burning in air?
Define the principal focus of a concave mirror.
You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?
Will geographical isolation be a major factor in the speciation of an organism that reproduces asexually? Why or why not?
The brain is responsible for
(a) thinking.
(b) regulating the heart beat.
(c) balancing the body.
(d) all of the above.
Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right-hand rule to find out the direction of the magnetic field inside and outside the loop.
How is the process of pollination different from fertilisation?
How do we detect the smell of an agarbatti (incense stick)?
What is the function of an earth wire? Why is it necessary to earth metallic appliances?
What is the importance of DNA copying in reproduction?
How is the movement of leaves of the sensitive plant different from the movement of a shoot towards light?
What could be the reasons for adopting contraceptive methods?
Fresh milk has a pH of 6. How do you think the pH will change as it turns into curd? Explain your answer.