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denis-greek [22]
2 years ago
11

True or false: sensitivity differences during light and dark adaptation result, at least in part, from the difference in bleachi

ng and regeneration rates of photopsin and rhodopsin.
Biology
1 answer:
arsen [322]2 years ago
5 0

True, photopsin and rhodopsin are the photoreceptor proteins found in the cones of the retina and are the basis of color vision.

<h3>What is the function of rhodopsin?</h3>

The retina contains a chemical compound called rhodopsin. It is responsible for converting light into electrical impulses that the brain interprets as vision. Nerve fibers from the retina come together at the back of the eye and form the optic nerve, which carries electrical impulses to the brain.

<h3>What is the function of the retina?</h3>

The function of the Retina is to capture light through the cornea, pupil and lens, and, through the optic nerve, convert it into neural signals and send them to the brain, which transforms it into visual recognition.

With this information, we can conclude that A very thin layer of light-sensitive tissue, located at the back of the eye, the retina is formed by millions of photoreceptor cells, which capture, record, decode light waves and, through the optic nerve, send them to the brain, where the vision.

Learn more about rhodopsin in brainly.com/question/3648231

#SPJ1

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The last time you saw the sisters pictured above, you considered how different protein molecules in their cells could lead to di
Andrew [12]

Answer:

recombination and independent segregation of chromosomes during meiosis  

Explanation:

Recombination and independent segregation of chromosomes represent the two most important meiotic mechanisms by which sisters from the same parents can inherit different gene variants and therefore look very different from each other:  

1- Independent assortment (segregation) of chromosomes: during meiosis, homologous chromosomes are randomly distributed in daughter cells (which will give rise to the gametes), and therefore separate independently of each other. It is for that reason that gametes have unique combinations of chromosomes, which increases genetic variation.

2- Recombination, also known as crossing over, refers to the exchange of chromosome segments between non-sister chromatids during meiosis. This mechanism is well-known to produce new gene variants (alleles) in the daughter cells. In consequence, recombination also increases the genetic variation of the resulting gametes that will produce offspring (in this case, different sisters).

6 0
3 years ago
Tastebuds wear out and are replaced every days
Elina [12.6K]

Answer:

The tongue is covered with around 9,000 taste buds that are replaced every 10 days.

5 0
3 years ago
What would a biochemist call the result of chaining many molecules together
maxonik [38]

The structure of a typical antibody molecule

Antibodies are the secreted form of the B-cell receptor. An antibody is identical to the B-cell receptor of the cell that secretes it except for a small portion of the C-terminus of the heavy-chain constant region. In the case of the B-cell receptor the C-terminus is a hydrophobic membrane-anchoring sequence, and in the case of antibody it is a hydrophilic sequence that allows secretion. Since they are soluble, and secreted in large quantities, antibodies are easily obtainable and easily studied. For this reason, most of what we know about the B-cell receptor comes from the study of antibodies.

Antibody molecules are roughly Y-shaped molecules consisting of three equal-sized portions, loosely connected by a flexible tether. Three schematic representations of antibody structure, which has been determined by X-ray crystallography, are shown in Fig. 3.1. The aim of this part of the chapter is to explain how this structure is formed and how it allows antibody molecules to carry out their dual tasks—binding on the one hand to a wide variety of antigens, and on the other hand to a limited number of effector molecules and cells. As we will see, each of these tasks is carried out by separable parts of the molecule. The two arms of the Y end in regions that vary between different antibody molecules, the V regions. These are involved in antigen binding, whereas the stem of the Y, or the C region, is far less variable and is the part that interacts with effector cells and molecules.

8 0
3 years ago
In your own words, explain why you think that geologists find relative dating useful.
aleksklad [387]

Fossils are important for working out the relative ages of sedimentary rocks. Fossils can help to match rocks of the same age, even when you find those rocks a long way apart. This matching process is called correlation, which has been an important process in constructing geological timescales. Relative dating is also used to arrange geological events, and the rocks they leave behind, in a sequence.

8 0
3 years ago
Non visible blood in the stool is termed occult blood true or false
svet-max [94.6K]
True, the term for non-visible blood in stool is termed occult blood. 
6 0
3 years ago
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