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LuckyWell [14K]
3 years ago
13

As you walk down the hall on the way to class, several students sneeze. You unknowingly inhale some of the droplets

Biology
1 answer:
erica [24]3 years ago
6 0

Answer:

The innate or nonspecific immune system includes two lines of defense in the human body. Non-specific means that it does not act on the specific pathogen. It works equally to keep all types of pathogens such as bacteria, viruses, parasites et cetera out of the body. The first line of defense includes physical barrier which prevents the entry of pathogens into the body. It includes skin, respiratory tract, gastrointestinal tract, cilia, nasopharynx, eyelashes, and body hairs. 

The second line of defense includes anti-inflammatory responses, fever, and nonspecific cellular responses such as phagocytes, macrophages, complement system et cetera. Thus, the virus has to pass physical, chemical, and nonspecific cellular responses of the body in order to infect the body. 

Explanation: I found this answer on a different site and it was right, no need to thanks me, no problem

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Food provides molecules that serve as fuel and building material for all organisms. Plants undergo photosynthesis and make their
zhenek [66]

Answer:

Read explanation.

Explanation:

Like plants, animals also need food for their bodies. But they can't produce their own food. They have to depend on others for food purposes. After eating anything, that don' t go their cells directly. It passes many stages; then, they go the cell as a fuel. From eating to consuming by the cell, many digestive processes happen, such as the degradation of larger molecules to small molecules. Many chemical reactions also occur to covert elements to that form, which can be taken by cells as fuel as the reaction in mitochondria.

This way, men and animals get food as their fuel.

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3 years ago
Which of these is most likely to be the main purpose of this<br>technology?​
larisa [96]

Answer:

What is it?

Explanation:

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3 years ago
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boyakko [2]

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4 0
1 year ago
Which statement correctly describes a chemical reaction?
11111nata11111 [884]

Bonds between atoms break and new bonds form correctly describes a chemical reaction

<u>Explanation:</u>

The process of resetting the integral fragments of the reactants to produce diverse items as outcomes is termed as a chemical reaction. Effects transpire when pair or further particles fuse and the particles transfer. Bonds between atoms are split and designed to develop new fragments.

Chemical reactions need to be separated from physical alterations. The physical aspects of a thing will vary during physical conversion befalls, still the chemical identification will endure the equivalent. Chemical bonds are formed or split to formulate a unique molecule. Individual reactions often occur as part of a broader list of reactions.

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What are the three types of homologies and the definitions?
olya-2409 [2.1K]

Answer:

hope this helps..

Explanation:

Dependent on the level of comparison four types of homology are defined: ( 1) Iterative ( = serial = homonomy), (2) ontogenetic, (3) di- or polymor- phic, and (4) supraspecific homology. ... Scientists have recently been paying renewed attention to the homology question.

Homology is the study of likeness, the similarity between species that results from inheritance of traits from a common ancestor. The study of similarities is broken up into three main categories: structural, developmental, and molecular homology.

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3 years ago
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