The cell membrane<span> is selectively permeable to ions and organic molecules and controls the movement of substances in and out of </span>cells<span>. The basic </span>function of the cell membrane<span> is to protect the </span>cell<span> from its surroundings. It consists of the phospholipid bilayer with embedded proteins.</span>
You should actually choose any 3 activities then I will determine it for you
Probably. Ecosystems are connected. While scientists do break the world
down to study it in smaller pieces because we can't comprehend the
ecosystem of the whole world at one time, the whole world is one big
ecosystem. Some parts of it are more directly connected to others, and
some parts are less directly connected. If something catastrophic
happened in one ecosystem, it would affect other ecosystems. But also
remember that the bigger the network, the less any one species affects
it. Because<span> there
are so many species in the world, the world is a HUGE ecosystem. The
affect would be somewhat absorbed by the vastness of the ecosystem.
However, if the extinction of one species (such as fish) has a large
impact on one ecosystem, it's impact on surrounding ecosystems might be
noticed. When you look at the world as a whole, it's not the extinction
of any one species that is very, very dangerous but the extinction of
many species. If enough species (like the fish) died in "separate"
ecosystems, eventually the ecosystem of the whole would be affected.</span>
Answer:
The growth medium promotes the regeneration of plants. The new plant cells multiply to form roots,stem,and leaves
Explanation:
Tissue culture is techniques used to produce plant for research and commercial purpose. In this technique small pieces of plants tissues (explant) cultured in a chemical medium under favourable condition.By applying an appropriate techniques plants cells can be rapidly multiply to produce new shoots,and by the addition of plant hormones auxin and cytokinin (growth regulator hormones) forms new roots.These newly formed plantlets further divided to produce number of plantlets.The new plants can be planted in soil to grow in a normal condition.
