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lina2011 [118]
3 years ago
11

A coronal section divides an organ into superior and inferior portions. A coronal section divides an organ into superior and inf

erior portions. True False
Biology
1 answer:
disa [49]3 years ago
6 0

Answer:

The correct answer is <u>False</u>

Explanation:

Hope this help

plz mark brainliest

Have a nice day!!!!

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Which conditions are common to all three of the following: genetic drift, the founder principle, and the bottleneck effect? a. i
Tcecarenko [31]

Explanation:

Common to genetic drift, the founder principle, and the bottleneck effect:

b. in small populations and result in a decrease in genetic diversity and/or an increase in the occurrence of specific genetic traits

c. when a small group of organisms only reproduce with each other to create a larger population of organisms

d. when the majority of a population is killed off and there are only a few remaining organisms left to rebuild the population

Further Explanation:

During the process of cell division, spontaneous changes within the genome can arise, called mutations. These are errors occur when copies of the DNA within the cell are made; mutations may range from small changes called single nucleotide polymorphisms, to large scale deletions, and additions which span multiple genes.

These mutations form variants which become stable within a population, leading to the formation of separate, genetically distinct populations called species.

  • mutations accumulate in a population over time, altering the frequency of alleles or different forms of a gene- this is called genetic drift.
  • In the founder effect, the separation of a group from a larger group can decrease genetic diversity, this can create a genetically distinct population
  • In the bottleneck effect, a population die off or barrier to reproduction increases the genetic drift in the population

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5 0
3 years ago
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protoporphyrin ix fluorescence and photobleaching during interstitial photodynamic therapy of malignant gliomas for early treatm
Marysya12 [62]

Prior to therapy, a high PpIX fluorescence was observed in three patients; however, after iPDT, this fluorescence was entirely photobleached. These patients' viable tumor sections had high PpIX concentrations (mean PpIX uptake per tumor: 1.4-3.0 M).

<h3>Briefing:</h3>

However, no or just minimal PpIX uptake (0-0.6 M) could be seen in the remaining two cases. Strong PpIX uptake patients demonstrated therapeutic response and long-term clinical stabilization (no progression at 29, 30, and 36 months); the remaining two patients experienced early treatment failure (death after 3 and 9 months).

<h3>Describe fluorescence:</h3>

Two steps make up the chemical process of fluorescence first, a chemical fluorophore such a protein or carotenoid absorbs shorter-wavelength light (excitation), and then some of the absorbed energy is released as longer-wavelength light (emission).

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4 0
1 year ago
How do antigens and antibodies interact? PLEASE HELP NO LINKS PLEASE
Luda [366]

Explanation:

There are several types of antibodies and antigens, and each antibody is capable of binding only to a specific antigen. ... Antigens are bound to antibodies through weak and noncovalent interactions such as electrostatic interactions, hydrogen bonds, Van der Waals forces, and hydrophobic interactions.

Antibodies attach to a specific antigen and make it easier for the immune cells to destroy the antigen. T lymphocytes attack antigens directly and help control the immune response. They also release chemicals, known as cytokines, which control the entire immune response.

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3 years ago
A woman's blood type is AB and her husband's BO What blood type (genotypes) can their children have
Deffense [45]
AB maybe I’ll make sure just wait
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2 years ago
Enfermedades por deficiencia de fosforo
Anarel [89]

Answer:

Una deficiencia de fósforo puede causar inapetencia, anemia (recuento bajo de glóbulos rojos), debilidad muscular, problemas de coordinación, dolor óseo, huesos blandos y deformados, un mayor riesgo de infección, una sensación de ardor o picazón en la piel y confusión.

Explanation:

espero y te sirva

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3 years ago
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