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ale4655 [162]
3 years ago
7

What are introns and Exons??

Biology
1 answer:
jeka943 years ago
3 0
Introns are parts of genes that do not directly code for proteins. (2)

Exons are parts of DNA that are converted into mature messenger RNA (mRNA). (6) The process by which DNA is used as a template to create mRNA is called transcription.
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How pollution from burning fossil fuels in vehicles can be reduced
Drupady [299]

Explanation:

Incinerators are not helpful in reducing pollution as they produce a lot of ash and smoke so it increases the air pollution by burning of waste.

Solar and wind energy are the clean source of energies replacing the fuels. Catalytic converters reduce the air pollution from the exhaust fumes of vehicles.

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7 0
3 years ago
In the United States, the only two spiders with dangerous bites are the
KengaRu [80]
D. brown recluse and black widow
3 0
4 years ago
Read 2 more answers
The human body has about 10 bacterial cells for every eukaryotic cell. Bacteria coat our skin, gut, and mouth. Also present are
ELEN [110]

Answer:

commensalism

Explanation:

Commensalism is a type of ecological interaction between two species in which one speices benefits while other is unaffected. Commensalism  also can be considered as a type of symbiosis-two species that live together. The interaction between human and its microbiota is beneficial for microbiota while it has no effects on humans.

Although, some bacteria (gut bacteria) can help in digestion. In this case, interaction with human is mutualism (both have benefits).

8 0
3 years ago
Antigens that elicit allergic reactions are referred to as:_________
denis-greek [22]

Antigens that elicit allergic reactions are referred to as allergens.

A material or antigen that can trigger an allergic reaction is known as an allergen.

The immune system of some individuals perceives allergens as foreign or threatening. In order to protect itself from the allergen, the immune system responds by producing a particular form of antibody known as IgE.

Allergy symptoms result from this reaction.

An antigen called an allergen causes the immune system to react in an excessively ferocious way to a perceived threat that would otherwise be harmless to the body. Allergies are the term for such reactions.

Technically speaking, an allergen is an antigen that, when exposed to atopic persons, can trigger an immunoglobulin E (IgE) response, resulting in a type-I hypersensitivity reaction.

The majority of Immunoglobulin E responses in humans are only activated in response to parasite infections.

Learn more about Allergic reaction here brainly.com/question/12978002

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4 0
2 years ago
Mr. Giovanni is a 37-year-old male who drives a delivery truck. He presents to your clinic after acute onset of severe lower bac
Elden [556K]

Answer: Hypoactive ankle tendon reflex

Explanation:

The clinical signs that is seen in the patient is difficulty with walking on the heels, less and abnormal strength of ankle plantar flexion.

He is also in possession of consistent nerve root impingement at the lumbar 5. There is lack of strength in the legs and is caused due to stretching of muscles.

This medical condition represents ankle tendon reflex. This condition is generally caused because of carrying heavy weights during the work time.

4 0
4 years ago
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