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3 years ago

Which structure of the trachea prevents it from collapsing inward and obstructing the air passageway?

1 answer:

6 0

Answer: hyaline cartilage rings

Hyaline cartilage rings in a shape of a C prevent the tracheal wall from collapsing inward and obstructing airway (during inhalation). Posteriorly (open portion of each ring) there is not cartilage but there is muscle so that the esophagus can stretch (the esophagus is behind the trachea).

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The amino acids in bacteria and plants can be classified in families based on the precursor molecule in the synthesis pathway of

raketka [301]

The given question is incomplete, the complete question is attached in the image format with the answer:

Answer:

1. aspartic acid :

asparagine

methionine

lysine

threonine

2.glutamic acid :

glutamine

proline

arginine

ornithine

3. pyruvic acid :

alanine

valine

leucine

isoleucine

4. chorismic acid :

phenylalanine

tyrosine

trypthophan

5. serine :

cysterine

glycine.

3 0

3 years ago

If cells are placed in a strong sugar solution, water will ___.

8_murik_8 [283]

Answer: Pass mostly from the cells to the sugar solution

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3 years ago

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Two technicians are discussing a stepped ECT circuit. Technician A says that the sensor used for a stepped circuit is different

icang [17]

Answer:B) Technician B

Explanation:ECT(ENGINE COOLANT TEMPERATURE) is a sensor present in the coolant Temperature sensor that checks and transmits the Temperature to the ECM(engine control module). This helps to regulate the fueling time, speed and other factors that can impact the Temperature of the engine.

Stepped ECT circuits require different Internal resistance inside the PCM(power-train control module) is a combined control which includes the ECU(ENGINE CONTROL UNIT) AND TCU(TRANSMISSION CONTROL UNIT). The same sensor can be used for both the stepped circuit and a circuit that is not stepped.

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3 years ago

Some scientists study the way fossils and living organisms are distributed, or spread out, on the Earth. What is this area of st

ruslelena [56]

Some scientists study the way fossils and living organisms are distributed, or spread out, on the Earth. What is this area of study called? Biogeography

4 0

3 years ago

Read 2 more answers

each of these four organisms began life as a single 2N cell. Cells in each organisms divided and differentiated. Probably the si

pochemuha

Answer:

DNA replication

Explanation:

DNA is the genetic material and serves to store genetic information. The genetic information is transmitted from a parent cell to the daughter cells or from the parent to the progeny by the process of DNA replication.

DNA replication is the process that occurs in the nucleus in eukaryotes and includes the synthesis of new DNA strands using the existing DNA strands as a template. The newly formed DNA molecules are then distributed among the daughter cells during cell division. Thereby, the process of DNA replication ensures that the DNA of the parent generation is carried to the next generation.

For instance, sperms and egg cells in humans carry the DNA of male and female parents respectively to the young one. DNA replication occurs in sperm mother cells and egg mother cells during the formation of sperms and egg cells respectively.

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3 years ago