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iogann1982 [59]
3 years ago
7

The body's first line of defense against infection include all the following except? A. Skin B.mucous membranes C. Acids in the

stomach D.interleukin-1
Biology
1 answer:
kaheart [24]3 years ago
7 0
I think the answer is d because the bodys first line of defense is both physical and chemical barriers ect. skin, tears, mucus, cilia, stomach acid and urine flow 
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List 3 benefits of the development of seeds and fruits.
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Explanation:

The fruits protect the seeds enclosed in the ovary. The seeds mature in the fruit by taking essential requirements.

The mature seeds retain the capacity of germination for a long period. It may be dispersed individually or along with the fruits to long distances by different agencies. The seeds germinate in the favorable conditions.

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Respuesta B.

Explanation:

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The only one correct answer would be:

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Give one example of a molecule using passive transport and one example of a molecule using active transport.
ruslelena [56]

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anastassius [24]

Answer:

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Explanation:

Gram stain is the staining method used to differentiate bacterial species into two groups, gram-positive and gram-negative bacteria. Factors that will differentiate gram-positive from gram-negative include the coloration of bacteria, the composition and chemical and physical properties of cell walls. In these tests, bacteria that have an outer membrane and a periplasmic space are considered gram negative and pink in color (sometimes similar to red) due to their cellular composition. For this reason we can state that there is no discrepancy present in the bacteria exposed in the question; Because this bacterium has an outer membrane and a periplasmic space, then it is normal for the bacteria to turn pink due to its cell wall composition.

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