Where is the options ???!!!
Correct answer: A). Light slows down as it moves from the air in to the water, resulting in refraction, or a bending of light.
This is because as light travels through one media it travels in a straight line, however, when it travels from one media to another media it bends, light path bends because of the phenomenon of refraction of light.
The refraction takes place only at the boundary, as the light continues to cross the boundary, it travels in a straight line.
So, as the portion of the pencil is submerged in water, the light will travel from water to air.
Hence it appears to be broken because of refraction of light. So, the correct answer would be option A.
Answer:
D. Increase in temperature from 20 degrees C to 37 degree C
Explanation:
A decrease in substrate concentration might not necessarily lead to an increase in enzymatic activities.
Enzymes are pH specific. Thus increasing the pH of operation from 6.8 to 7.4 might destroy the enzyme.
Reactants need to overcome a minimum energy (activation energy) before they can be converted to products. The higher this energy, the lower the rate of reaction. Hence, increasing in activation energy will lead to a lower rate of enzymatic reaction.
<em>Enzymes work optimally at a temperature that is close to the human's body temperature which is 37.5 degrees. Hence, increasing temperature from 20 degrees to 37 degrees will result in an increased enzymatic activities.</em>
The correct option is D.
Using a microscope
Explanation:
A microscope is a scientific device used for magnifying and studying very tiny features.
It was invented by Anton Von Leeuwenhoek in the 17th century.
- A unicellular organism is an organism made up of a single cell.
- A multi-cellular organism is made up of several cells.
- A cell is a very small microscopic structure.
- It is usually described as the fundamental unit of life.
- Due to its small size, the naked eyes cannot see it
- The invention of the microscope opened up the world of cells.
- Since they have been around for a long time, distinction of cells would have been made possible at those times using a microscope.
learn more:
Microscope brainly.com/question/4065308
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The layer is the Mucosa layer.
Hope this helps!
-Payshence xoxo
