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Can you please help me with these problems?

Can you please help me with these problems? I'm stuck...

1.Digestion in the body occurs chemically and mechanically. The digestive process starts in the mouth as the teeth grind the food and saliva adds digestive enzymes. The process continues in the esophagus aided by peristalsis.

In this passage, peristalsis is

 the addition of pepsin.

the absorption of lacteals.

the production of bile.

the contraction of muscle.


2.How are the functions of vaccines and antibiotics different?

 Vaccines cause an immune response to bacterial cells, while antibiotics seek out and kill viruses.

Vaccines cause a specific immune response to a virus, while antibiotics are nonspecific.

Vaccines cause a nonspecific immune response to a bacterium, while antibiotics are specific.

Vaccines cause an immune response to a virus, while antibiotics seek out and kill bacterial cells.


3.Which of the following describes the proper order of structures that a carbon dioxide molecule diffuses through after leaving the blood?

 Alveolar space; surfactant layer; capillary wall

Capillary wall; alveolar space; surfactant layer

Alveolar space; capillary wall; surfactant layer

Capillary wall; surfactant layer; alveolar space

Top Answer

1. The correct answer is option " muscular contraction ". 2. The correct answer is option "... View the full answer

1 comment
  • The option 2 can have other possible answer. The answer provided in the text is the best possible answer, that is, most appropriate.
    • ankit.kumar
    • May 18, 2018 at 10:56am

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Other Answers

the contraction of muscle. Vaccines cause an immune response... View the full answer

1) D. the contraction of muscle. 2) D. Vaccines cause an immune... View the full answer

the contraction of muscle  Vaccines cause an immune response... View the full answer

Here is a detailed explanation... View the full answer

1 comment
  • best regards
    • gambani
    • May 17, 2018 at 1:22pm

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