Our vision can adapt to change between bright light and dark, but it takes a moment because the rhodopsin in our receptor cells must break apart into all-trans-retinal and scotopsin for light adaptation and recombine for dark adaptation.
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Rhodopsin is a pigment-containing sensory protein (photopigment) that converts light into an electrical signal. Rhodopsin consists of 11-cis retinal combined with scotopsin. When rhodopsin absorbs light, retinal changes from 11-cis to all-trans retinal and the retinal-scotopsin complex breaks down. This process is called bleaching of the pigment and it triggers a signal transduction along the optic nerve to the visual cortex in the brain.
In the dark, rhodopsin regenerates.</span>
<u>Answer:</u> The weight of the person above the surface of a planet is 635.83N.
<u>Explanation:</u>
To calculate the weight of a person, we use the formula:
....(1)
where,
w = weight of an object
m = mass of the person = 65kg
g = acceleration due to the gravity of the planet
For the calculation of weight, we need to first find the acceleration due to gravity and for that we use the formula:
where, g = acceleration due to gravity =
G = Universal gravitational constant =
M = mass of the planet =
r = distance of the person from the planet =
Putting values in above equation, we get:
Putting this value in equation 1, we get:
Hence, the weight of the person above the surface of a planet is 635.83N.
Answer:
I don't know what you said
Explanation:
A.information about the product testing in a study that includes a control group, because testing the product helps prove the company's claim. hope this helps
Answer:
The correct answer is : They reduce histamine in the blood by binding to and destroying it.
Explanation:
Antihistamines are type of drugs that inhibits release of histamine by binding to histamine receptors and suppress the transduction pathways of histamine.
They blocks the enzymes from transforming histidine into histamine and reduce cell response by blocking histamine-induced cascade signal transduction. These are use to treat allergies, congestion, hay fever and other allergy responses.
Thus, the correct answer is : They reduce histamine in the blood by binding to and destroying it.