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Vlada [557]
3 years ago
15

In humans, one function of the skin is to prevent water loss. Skin releases water or holds in water when necessary.

Biology
1 answer:
Talja [164]3 years ago
8 0
The cuticle and stomata because both parts function to regulate water absorption and release for the plant.
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If a pathogen on food got past saliva, which additional defenses in the first line of defense would the pathogen contact?
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Answer:

D

Explanation:

Lymphocytes are the second line of defence

First line of defence indiscriminately defends against all pathogens unlike secondary response which is targeted. First line of defence refers to the external body components like skin, secretions from the body in the alimentary canel

Mucus traps pathogens. Stomach acid kills pathogens

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3 years ago
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5. In 1928, Alexander Fleming noticed that a mysterious blue-green fungus had grown on some bacterial colonies that were known t
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Answer:

The steps that can be seen in this story are observation and the questioning phase, which can also be called elaboration of the problem.

Explanation:

The scientific method is a set of phases that are able to guide researchers to the creation of scientific knowledge, through an experiment. This method is essential for conducting scientific research, allowing an experiment to be managed in a way that promotes answers to scientists' questions. The scientific method presents the phases called observation, questioning (or elaboration of the problem), elaboration of hypotheses, experimentation, analysis of the results and conclusion.

In the story shown in the question above, we can see the phases called observation and questioning. The observation takes place the moment Fleming noticed a fungus capable of growing on colonies of bacteria that cause throat infections, killing them. This observation made him enter the questioning phase, when he wondered if the fungus was able to prevent the growth of these bacteria.

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3 years ago
Genetic drift occurs when a population of organisms which normally don't travel great distances, like fruit flies, floats on a t
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True.

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Genetic drift occurs when a species migrates into another one, therefore making a new variation of the species.

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What would most likely happen to a person who is not getting enough essential amino acids in his or her diet?
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It can result in decreased immunity, digestive problems, fertility problems, lower mental alertness, slowed growth. Amino acids play many different roles in the body and the symptoms vary.
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2 years ago
What is human interleukin 2?
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Answer:

interleukin-2 (IL-2) is an interleukin, a type of cytokine signaling molecule in the immune system. It is a 15.5–16 kDa protein[5] that regulates the activities of white blood cells (leukocytes, often lymphocytes) that are responsible for immunity. IL-2 is part of the body's natural response to microbial infection, and in discriminating between foreign ("non-self") and "self". IL-2 mediates its effects by binding to IL-2 receptors, which are expressed by lymphocytes. The major sources of IL-2 are activated CD4+ T cells and activated CD8+ T cells

Explanation:

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3 years ago
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