math tutor sites

: Whether each and every part of an enzyme molecule participates in the substrate binding? Obviously not. The substrate binding occurs at the active site only of an enzyme. The active site of an enzyme is defined as the small region at which the substrate binds to the enzyme and participates in the catalysis. Important question..

Site of Photosynthesis

Chloroplast is one of the largest algal and plant cell organelles. It is the site of photosynthesis. A chloroplast is a green plastid present in the cells of the leaf and other green parts of the plants. It varies in its size (3 to 10 M m in diameter) and shape. Chloroplast is an organelle having a matrix called stroma that remains ..

SITE OF RESPIRATION

. 4. How is energy stored in the cells ? 5. Name the cell organelle which is the site of respiratio..

Site of Photosynthesis

Photosynthesis can take place in all green parts of the plant but leaves are regarded as solar collectors. Anatomically, the leaf has: o epidermal layers on both outer surfaces which may be covered by waxy cuticles. o minute openings called stomata may be present on both or only the lower epidermis. o the mesophyll tissue betw..

Site of Photosynthesis

All the green parts of plants are capable of carrying out photosynthesis, but the leaves of the plants are specially developed for this purpose. Let us study in detail about the internal structure of a leaf. ..

Site of Photosynthesis

Source of Raw materials and Energy for Photosynthesis

Photosynthesis can occur in any green part of the plant though it mostly takes place in leaves. Leaves are adapted in the following ways: (i) Leaves, being thin and flat, offer a large surface area for the process to occur. (ii) Internally, the loose arrangement of mesophyll tissue allows rapid diffusion of gases. (iii) The high concent..

Site of Occurrence

Oogenesis takes place in the ovaries. Unlike sperm formation that starts at puberty, egg formation begins before birth but is completed only after fertilization...

Site and Time of Occurrence

Transcription occurs in the nucleus during the Gi and G2 phases of cell cycle. DNA has promoter and terminator sites. Transcription starts at the promoter site and stops at the terminator site..

active spot or active site

It is that area of the enzyme that not only attracts and holds the substrate molecules over it but also facilitates dieir chemical change. As compared to the size of enzyme, an active site occupies only a small area. Therefore, an enzyme may have one to several active sites over it. Each active site is..

active centre or active site

Active centre or the active site is that part of the enzyme which takes part in the reaction. Specific substrate combines with it and this combination brings about the biochemical reaction. Active centre is very specific. There may be one or more active centre on a single enzyme molecule. It is believed that the acti..

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