The freshness of the blood sample can be analysts with serum because <span>serum clots several minutes after exposure to air. It can also be found in the antibodies that have important forensic implication. Thank you for posting your question here. I hope my answer helps. </span>
Answer: A. the lens focuses light on the retina
The lens is composed of transparent, flexible tissue and is located directly behind the iris and the pupil. it is the secondary part of the eye after the cornea. by changing it's shape the lens changes the focal distance of the eye and focuses the light that passes through it and into the retina in order to create clear images of objects. it also works together with the cornea to refract, or bend light.
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Answer:
Enzymes are biological molecules (typically proteins) that significantly speed up the rate of virtually all of the chemical reactions that take place within cells.
Explanation:
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C. because stimuli is how your body responds to something, and in this case, someone's heart rate increases WHEN their blood oxygen drop. Do you see how it responds? ;-)
