The correct answers are:
a tiger ready to pounce on it's prey
A child chewing food
Electron microscopes differ from light microscopes in that they produce an image of a specimen by using a beam of electrons rather than a beam of light. Electrons have much a shorter wavelength than visible light and this allows electron microscopes to produce higher-resolution images than standard light microscopes.
Active transport<span> is the </span>movement<span> of dissolved </span>molecules<span> into or out of a cell through the cell membrane, from a region of lower concentration to a region of higher concentration. The </span>particles<span> move against the concentration gradient, using energy released during respiration.</span>
<span>A photon of light is absorbed by a chlorophyll molecule. The photon increases the energy of an electron in the chlorophyll molecule, so the electron is boosted to a higher orbital. This excited state results in a redox reaction, in which the electron moves from the chlorophyll molecule to an electron acceptor, reducing it. The electron acceptor can be various different molecules such as chlorophyll A0.</span>
