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Mariana [72]
3 years ago
12

The human body is composed of cells, organs, organ systems, and tissues. How are these organized?

Biology
1 answer:
Pie3 years ago
7 0

Answer:Cells are organized into tissues; and tissues form organs. Organs are organized into organ systems. Example like your muscular system.

Explanation:

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How Light Bleaches Rhodopsin
OleMash [197]

Answer:

Salut!

  1. Light enters the eye through the cornea.
  2. Light travels to the macula within the retina.
  3. Rhodopsin absorbs light, and the Vitamin A changes shape.
  4. Vitamin A detaches from the rhodopsin, and some vitamin A is lost.
  5. Vitamin A from the bloodstream replenishes what is lost. The vitamin A returns to its original shape.

Explanation:

Retina is the part of the eye that contains photosensitive cells that capture light and produce the electrical signals that the brain perceives as images. These photosensitive cells are of two kinds:

  • Rods
  • Cones

Rods contain the photosensitive pigment, rhodopsin that is needed for vision at night or in dim light. Cones function in bright light.

Rhodopsin Bleaching:

Vision in bright or excessive light requires a process called rhodopsin bleaching which is the degradation of rhodopsin upon exposure to light. Upon contact with light, rhodopsin goes through structural changes characterized by the conversion of a pigment derived from Vitamin A, 11-<em>cis</em> retinal to all <em>trans</em> retinal. This chemical conversion initiates a photo-transduction reaction (reaction in which a photon of light is converted into electrical signals) that produces the electrical signals that travel to the brain via the optic nerve. The brain converts the electrical signals to images. This is followed by rhodopsin regeneration in the dark in which all <em>trans</em> retinal is converted back into 11 <em>cis</em> retinal.

3 0
2 years ago
HELP !!!!!!!!
pshichka [43]

Answer:

I would go to option C

Explanation:

Autotrophs are organisms that can produce their own food, using materials from inorganic sources. Option C matches this definition and process.

Stay safe and Merry Christmas! :)

8 0
3 years ago
Read 2 more answers
In Incomplete Dominance, the dominant allele is not expressed when the recessive allele is around. There are three phenotypes po
Kaylis [27]

Answer: True

Explanation:

In incomplete dominance, neither of the alleles in an heterozygous condition is dominant, thing the organism will show a form of phenotype in which the physical trait expressed is a combination of the two alleles.

6 0
3 years ago
Which element is found in proteins and nucleic acids but not in carbohydrates
solmaris [256]

proteins: H,C,N,O &S,P

Nucleic:H,C,N,O,&P

Carbohydrates:H,C,O

Lipids :H,C,O,N,P.

4 0
3 years ago
In what type of circulation does the oxygenated blood flow between the heart and the cells of the body
arlik [135]
Systematic circulation
6 0
2 years ago
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