Blood cells are produced in the bone marrow and the bone marrow is part of the skeletal system. So the answer would be skeletal system<em>. </em>
Answer:
The waves are refracted by the cornea, and again by the lens. Some of them are stopped by the iris, while other will pass through the pupil. They propagate through the vitreous humor and reach the retina, where they will be focused onto the photosensitive cells. Depending on their wavelength, they may excite cones (color sensitive) or rods (black and white). The excited cells create an action potential in the optic nerve, which is combined with the signals of other photocells into a pattern that is transmitted to the visual cortex of the brain.
Sounds more like biology than physics...
Biologists say that living things are organized as living things contain specialized and coordinated parts.All living organisms are made up of one or more cells, which are considered the fundamental units of life.The individual organisms can be organized into the following levels:
cells, tissues, organs, organ system and organisms.
Answer:
Restriction Enzymes
Explanation:
It is restriction enzymes specifically, which are used to cut DNA into fragments. Restriction enzymes can be regarded as biological scalpels which can produce either a blunt end or sticky end in DNA.