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IceJOKER [234]
4 years ago
14

Difficulties will occur to every one, with respect to this theory." list two potential difficulties that might have troubled dar

win's contemporaries.
Biology
1 answer:
aleksandrvk [35]4 years ago
7 0
Difficulties will occur to every one, with respect to this theory." Darwin's contemporaries were eight characters, Alfred Russel Wallace, Charles Lyell, Ernst Haeckel, Gregor Mendel, Mary Anning, Robert Chambers, Thomas Henry Huxley and Thomas Malthus, and the two potential difficulties that might have troubled darwin's contemporaries were the lack of transitional forms and insufficient time for different forms to evolve.
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Write a paragraph that describes where DNA is found inside cells and how it is packaged. If desired, add a drawing to support yo
ryzh [129]

Answer:

DNA is tightly packed up to fit in the nucleus of every cell. As shown in the animation, a DNA molecule wraps around histone proteins to form tight loops called nucleosomes. These nucleosomes coil and stack together to form fibers called chromatin. Chromatin, in turn, loops and folds with the help of additional proteins to form chromosomes. Condensing DNA into chromosomes prevents DNA tangling and damage during cell division.

Explanation:

.

6 0
3 years ago
Carlos avoids _____on the ingredient list of packaged foods because he has celiac disease.
mamaluj [8]

Answer:

wheat, rye, and barley

Explanation:

  • Celiac disease is a type of an immune disorder in which a person is unable to eat food that contains gluten because it can lead to the destruction of their small intestine.
  • Gluten is a type of protein that is found in several ingredients such as wheat, rye, and barley.
  • Consumption of gluten can lead to the development of inflammation in the small intestine which after a certain time can lead to its destruction.
  • The various symptoms associated with the disease include bloating, diarrhea, anemia, etc.
  • Since Carlos has celiac disease he has to avoid wheat, rye, and barley.
5 0
3 years ago
Adaptive immunity comprises two branches: humoral immunity and cellular immunity. What are the characteristics of each of the tw
kotegsom [21]

Answer:

Adaptive or acquired immunity is that we acquire throughout our lives through vaccines (active), breast milk (passive) or injection of specific artificial or natural antibodies to a certain pathogen (passive).

The two great arms of this immunity are the humoral and the cellular.

The humoral refers to the cytokines and immunomodulatory molecules that are responsible for transmitting fundamental messages between defense cells in order to coordinate the destruction of the pathogen between them.

Instead, cellular immunity speaks about cell lineage such as b, t, tcd4 lymphocytes, natural killers, plasmacytes, etc.

It can be said that the humoral factor is the one that coordinates the pathways and the relationships between the cells of the acquired immunity, both are important because the two need each other for adaptive immunity to work.

Explanation:

Examples of the humoral factor: pro and anti inflammatory cytokines, interleukins, complement chain, antibodies, TNF alpha, beta, etc.

Examples of cellular factor: plasmacyst, b lymphocyte, t lymphocyte, NT lymphocyte

6 0
3 years ago
Escriba 2 características de cada sucesión ecológica
dlinn [17]

Answer:

En la sucesión primaria la roca recién formada o recién expuesta es colonizada por primera vez por seres vivos.

En la sucesión secundaria, un área anteriormente ocupada por seres vivos se ve alterada o afectada, y luego se vuelve a colonizar después de la perturbación.

Explanation:

7 0
3 years ago
How do the size of each population affect each other
enyata [817]

Answer:

economic and everything

Explanation:

If one population dies out, all the populations that depend on that species for food may also die out. A change in one population affects the entire community because all the populations of a community depend on each other. ... A population is all the members of one type of organism living in an ecosystem.

As a population grows in an area, a population may experience the effects of increased densities. In a given area, is the maximum population size of the species that the environment can sustain is called the carrying capacity. Carrying capacity is determined by the amount of available resources (food, habitat, water).

4 0
3 years ago
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