761Every Day ScienceMedium
In Eye donation, which part of the eye used?
ACornea
MCQs
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Correct answer
A. Cornea
Explanation
Cornea is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. 149F
Explanation
The World Health Organization (WHO) notes that bacteria are rapidly killed at temperatures above 149°F (65°C). The World Health Organization (WHO) notes that bacteria are rapidly killed at temperatures above 149°F (65°C). This temperature is below that of boiling water or even a simmer. Danger Zone! Bacteria multiply rapidly between 40 and 140 degrees. Bacteria will not multiply but may start to die between 140 and 165 degrees. Bacteria will die at temperatures above 212 degrees. The only way to kill bacteria by temperature is by cooking food at temperatures of 165 degrees or more. Bacteria also die in highly acidic environments like pickle juice.
Correct answer
A. Bacterial
Explanation
Tetanus is an infection caused by bacteria called Clostridium tetani. When the bacteria invade the body, they produce a poison (toxin) that causes painful muscle contractions. Another name for tetanus is “lockjaw”. It often causes a person’s neck and jaw muscles to lock, making it hard to open the mouth or swallow.
Correct answer
C. Cornea
Explanation
Cornea is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Richter scale
Explanation
Richter scale is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. 3 weeks
Explanation
3 weeks is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. 1609
Explanation
1609 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Lens refractive power
Explanation
A dioptre (British spelling) or diopter (American spelling) is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres. (1 dioptre = 1 m−1.) It is thus a unit of reciprocal length.
Correct answer
B. Prism
Explanation
In optics, a prism is a transparent optical element with flat, polished surfaces that refract light. In a rainbow, raindrops in the air act as tiny prisms. Light enters the raindrop, reflects off of the side of the drop and exits. In the process, it is broken into a spectrum just like it is in a triangular glass prism.
Correct answer
A. Capillary action phenomenon
Explanation
Capillary action (sometimes capillarity, capillary motion, capillary effect, or wicking) is the ability of a liquid to flow in narrow spaces without the assistance of, or even in opposition to, external forces like gravity