Answer:
The intense and constant activity of insulin synthesis explains why pancreatic beta cells possess more rough endoplasmic reticulum and ribosomes than other cells.
Explanation:
Both ribosomes and the rough endoplasmic reticulum are necessary for protein synthesis to occur. In cells whose function is to produce substances, such as glands, the content of these cellular structures is higher in order to fulfill their function.
The pancreatic beta cells, located in the islets of Langerhans, have the function of synthesizing insulin, an endocrine hormone in charge of regulating the glucose content in the blood. <u>Because the beta cells constantly produce insulin, their content of rugged endoplasmic reticulum and ribosomes is high, in order to satisfy the demand for this hormone in the body</u>.
The right answer is It does not show that photosynthesis consists of many separate reactions.
It takes six molecules of carbon dioxide and six molecules of water to synthesize a molecule of glucose, releasing six molecules of oxygen, thanks to the light energy.
6 CO2 + 6 H2O + light energy ==> C6H12O6 (glucose) + 6 O2
<u>But this balance is in fact broken down into two successive stages:</u>
Light phase or photochemical phase:
12 H2O + light ==> 6 O2 + chemical energy (24 H).
The Calvin cycle (dark phase):
6 CO2 + chemical energy (24 H) ==> C6H12O6 + 6 H2O.
In the dark, an object is more clearly seen when viewed in peripheral vision than when viewed directly, this phenomenon occurs because the rods located in the retina are:<u> more </u><u>sensitive</u><u> in the dark than </u><u>cones</u>.
The retina extends through the posterior portion of the eyeball is the innermost layer and in it are the photoreceptors: cones and rods.
Rods and cones are the two types of photoreceptor cells in vertebrates that capture light energy (photons) and convert it into electrical signals.
- The rods are sensitive to changes in light, since their detection thresholds are low, so they only come into operation when the light intensity is low (scotopic vision or night vision).
- Scotopic vision has relatively low acuity, as the details of an object cannot be discerned or its color appreciated.
- On the contrary, cones have a much higher threshold for light, they are responsible for daytime vision (photopic vision) and their mission is to detect colors and shapes (details).
Therefore, we can conclude that in the dark, an object is more clearly seen when viewed in peripheral vision than when viewed directly, this phenomenon occurs because the rods located in the retina are: more sensitive in the dark.
Learn more here: brainly.com/question/14018797
Answer:
<em>The five species are: Pantoea, Stapylococcus, Ustilago, Gibberella and Arabidopsis.</em>
Explanation:
<em>Because they have identical amino acid sites and sequence alignment with the aphid sequence. So the five especies are: Pantoea, Stapylococcus, Ustilago, Gibberella and Arabidopsis.</em>
