Where is hemoglobin found?
Hemoglobin is found in red blood cells (RBCs) and constitutes about 90-95% of the dry weight of RBCs. It is also found in certain other cells such as macrophages, neurons, and alveolar cells.
What is the primary function of hemoglobin?
The primary function of Hemoglobin is to transport oxygen from the lungs to various tissues in the body and to carry carbon dioxide from the tissues back to the lungs.
What are some common species of Nostoc?
Common species include Nostoc commune, Nostoc azollae, Nostoc punctiforme, Nostoc flagelliforme, and Nostoc pruniforme.
Where can Nostoc be found?
Nostoc can be found in freshwater environments, on tree trunks, rocks, and as symbionts in lichens and certain bryophytes.
What is the ecological importance of Nostoc?
Nostoc are important for nitrogen fixation, enriching soil nutrients. They also have potential uses in biofuel production, bioremediation, and the pharmaceutical industry due to their antibacterial and antiviral properties.
How do Nostoc reproduce?
Nostoc reproduces vegetatively through fragmentation and asexually by forming akinetes. They also reproduce using heterocysts.
What is Nostoc?
Nostoc is a genus of blue-green algae or cyanobacteria, found mainly in freshwater environments. They are capable of photosynthesis and nitrogen fixation.
What is the difference between dicot and monocot leaves?
Dicot leaves (dorsiventral) have reticulate venation, differentiated mesophyll (palisade and spongy cells), and more stomata on the lower surface. Monocot leaves (isobilateral) have parallel venation, undifferentiated mesophyll, and stomata equally distributed on both surfaces.
What are lenticels and their function?
Lenticels are small openings on the surface of stems that allow for gas exchange between the internal tissues and the external environment, facilitating respiration and transpiration.
How does secondary growth occur in dicotyledonous stems?
Secondary growth in dicot stems is due to the activity of the vascular cambium and cork cambium, which increase the thickness (girth) of the stem by forming secondary xylem and phloem.
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