What allows the trachea to stay open and bend?

Answers

Answer 1
Curved rings of cartilage allow the trachea to stay open and bend.

Related Questions

Which organisms are both secondary and tertiary consumers in this food web?

-Chemosynthetic bacteria and amphipods
-Zooplankton and mussels
-Ratfish and octopuses
-Galatheid crabs and zoarcid fish

Which of the following is most likely to cause the greatest disruption to an ecosystem? 
Emptying an aquarium containing non-native species into a local waterway
Cutting down a small cedar tree to make holiday decorations
Cleaning the windshield of a car with an alcohol-based glass cleaner
Mowing the lawn in a city park

During ecological succession, how does the growth of young hardwoods affect the organisms living in an ecosystem?

Grasses and low shrubs are unable to obtain the amount of light they need to survive, so there are small numbers of them.
The trees provide shelter and food for a variety of mammals, insects, and birds.
In autumn, falling leaves provide a source of energy for decomposers such as fungi.
All of the above


Answers

I believe it’s rat fish and octopus but I’m not completely sure

The organisms that are both secondary and tertiary consumers in this food web, Ratfish, and octopuses. This is because if Galatheid crabs and Zoarcid fish are removed, they become secondary consumers, but now they are tertiary consumers.

What do you mean by Tertiary consumers?

Tertiary consumers may be defined as a carnivore at the topmost rank in a food chain that forages on other carnivores.

The statement that most likely causes the greatest disruption to an ecosystem is, cutting down a small cedar tree to make holiday decorations.

During ecological succession, the growth of young hardwoods affects the organisms living in an ecosystem by all of the statements given above.

Therefore, each of the above questions may be described briefly.

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How does a eukaryotic plant cell store and remove waste materials?

Answers

Plants have vacuoles and these can be used for storage or storage of waste substances

a collection of specialized cells and cell products that perform a specific function

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A collection of specialized cells and cell products that perform a specific function is called "tissue".

A collection of specialized cells and cell products that perform a specific function is called "tissue".

How many types of muscle tissues are found?

There are three different forms of muscle tissue: skeletal muscle tissue. tissue of smooth muscles. Heart muscle tissue type of tissue is in the muscular system.

Animals with muscular tissue have a specific tissue that uses contraction to apply forces to various bodily components. Muscle fibers are long, slender cells that make up this structure. It manages an organism's mobility skeletal muscle.

Sarcoplasm is the name for the cytoplasm found inside muscle fibers. The sarcoplasmic reticulum, a network of membranes, is present there. The term "sarcolemma" refers to the membrane that encloses the muscle fibers.

A type of connective tissue that is not a connective tissue proper is Cartilage. A connective tissue is a type of tissue in the body of mammals that is used to connect or join all the other tissues in the body system. Some types of connective tissues include the dense irregular connective tissue and loose connective tissue.

Therefore, A collection of specialized cells and cell products that perform a specific function is called "tissue".

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The tharsis bulge on mars is most likely the result of

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The Tharsis bulge is probably a plume of molten mantle material that rose to Mars' surface and formed the said bulge, a rounded projection. It is also the biggest bulge with solid surfaces among all the planets known.

Where else is amylase secreted in the digestive system?

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There is 2 types of amylase. But they have to same function which is to digest starch to Maltose. They r salivary amylase and pancreatic amylase.
Salivary amylase is produced in the salivary glands, while pancreatic amylase is produced in the pancreas

After leaving the stomach, chyme passes into the first segment of the small intestine called the ________

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After leaving the stomach, chyme passes into the first segment of the small intestine called as the duodenum. Most of the food is absorbed in this region of small intestine of the digestive system.

What is Digestion?

Digestion is the process of breakdown of the large insoluble food molecules into small water-soluble molecules which helps in absorbing the food particles into watery blood plasma. In some organisms, the smaller water-soluble substances are absorbed through the small intestine into the blood stream directly.

The small intestine makes all the digestive juices which mixes with the bile and pancreatic juice to complete breakdown of complex compounds such as proteins, carbohydrates, and fats. Bacteria present in the small intestine make some of the enzymes required in the digestion of carbohydrates.

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The cell theory was constructed by _____. Robert Hook Schleiden and Schwann Carolus Linnaeus

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the cell theory was constructed by schleiden and schwann.

Answer:

Schleiden and Schwann

Explanation:

The cell theory is the now universally believed theory that all living being are formed by cells, and the first cell theory was proposed by Theodor Shchwann and Mathias Jakob Schleiden, back in 1830, the first cell was ever observed in a microscope by Robert Hook in the 16th century but it wouldn´t be untill 2 centuries later that the cell theory started to take form.

selective breeding is the only method to change life forms characteristics true or false

Answers

The assertion that selective breeding is the only way to alter the characteristics of life forms is false because other methods like genetic engineering and natural selection also play a role. Selective breeding, or artificial selection, has been used for millennia but is limited by the genetic variability of complex organisms and can result in unintended trait changes.

The statement that selective breeding is the only method to change life forms' characteristics is false. There are other processes such as genetic engineering and natural selection that also result in changes to an organism's traits. Selective breeding, also known as artificial selection, is a method where humans breed plants or animals with desirable traits to produce offspring that express those traits more strongly. This process has been used for thousands of years, notably in the domestication of various plant and animal species.

However, selective breeding is not without its limitations, especially concerning complex organisms. Such organisms often experience unintentional changes in other characteristics when selectively bred for a particular trait, which could be detrimental. Furthermore, in complex organisms like humans, a very small fraction of genetic variation between individuals limits the range of characteristics that can be selected for at any given time. On the other hand, genetic engineering allows for direct manipulation of DNA to achieve desired traits, and natural selection involves the differential survival and reproduction of individuals due to differences in phenotype.

Therefore, while selective breeding can induce change in an organism's traits, it is by no means the sole method available for such modification.

Individual water molecules are held to one another by relatively weak ________ bonds.

Answers

The weak bonds are called hydrogen bonds and they are used to connect the hydrogen atom to oxygen atom in order to share electrons. 

Individual water molecules are held together by relatively weak hydrogen bonds, which are stronger than other dipole-dipole forces but weaker than covalent or ionic bonds. These bonds contribute to the unique properties of water, extending its liquid state at room temperature and raising its boiling point.

Individual water molecules are held to one another by relatively weak hydrogen bonds. Hydrogen bonds occur when the negative region of one water molecule is attracted to the positive region of another molecule. Even though hydrogen bonds are stronger than other dipole-dipole forces, they are still much weaker than covalent and ionic bonds that hold the atoms within an individual molecule together. It's the collective strength of these hydrogen bonds that helps water remain liquid at room temperature, unlike other similar molecular weight substances like methane or carbon dioxide, which are gases under the same conditions.

In liquid water, there are enormous numbers of hydrogen bonds which collectively endow water with unique properties. For instance, these intermolecular interactions allow water to have a higher boiling point. The hydrogen bonds are indicated with a dotted line in scientific illustrations to reflect their relative weakness compared to the solid lines used for stronger covalent bonds.

A scientist is comparing the outer layer of an onion cell to the outer layer of a human skin cell. What is unique about the outer layer of the onion cell compared to the skin cell?
It contains proteins.
It contains cellulose.
It contains carbohydrates.
It is selectively permeable.

Answers

The outer layer of the onion cell, which is a plant cell, contains cellulose, however, the human skin cell (which is an animal cell) does not contain cellulose in it. The plant cells have a rigid cell wall present around the cell membrane, which protects the cell from the outer environment and keeps it rigid. This cell wall of the plant cells is composed of the cellulose. The animal cells have no cell wall present around them, and thus, contain no cellulose.

Hence, the correct answer is 'it contains cellulose'.

The unique characteristic of the outer layer of the onion cell compared to the skin cell is that it contains cellulose.

What is cellulose?

Cellulose is a complex carbohydrate that forms the cell wall of plant cells, providing rigidity and structural support. In contrast, the outer layer of a human skin cell does not contain cellulose but is composed of keratin, a protein that gives skin its strength and durability.

While proteins, carbohydrates, and selective permeability are all important components of cellular membranes, the presence of cellulose specifically distinguishes the outer layer of the onion cell. Cellulose is a major component of plant cell walls and is responsible for their characteristic shape and structure. It provides a protective barrier and contributes to the overall integrity of the cell.

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How we to prevent disease from spreading when travel?

Answers

Hand sanitiser, bactirea killing wipes, gas mask, gloves hasard suit, ect 
but washing your hands is good too XD 

An example in which a species is no longer found anywhere on earth is

Answers

 It is called extinction

Minnesota department of natural resaws says has introduced regulations that require the use of approved firewood in State parks state florists and wildlife management area is there a specific approval firewood for each area which can’t be used in other protected areas what is the most likely reason for these restrictions

Answers

where are the answers to this question

Answer:

B:     To avoid the introduction or spread of insects or disease that damage native trees.

PSYCHOLOGY Assisting in coordination of movement, sleep, respiration, appetite, and facial sensations are functions of the __________. A. pons B. medulla C. cerebellum D. brainstem

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A. Pons. The pons includes nerves that have sensory roles in hearing, equilibrium and taste, as well as facial sensations like touch and pain, and motor function roles including facial expressions, eye movement, chewing and swallowing.
A. the pons. the pons is pretty cool 

How does incomplete dominance differ from a dominant recessive pair of alleles?

Answers

Incomplete dominance is when both of the the alleles represented are heterozygous thus creating a third phenotype known as a blend e.g white and red flowers gives a pink one. Whereas dominant recessive both alleles are homozygous and thus the phenotype depicts that gene.

Which of the following energy sources is expected to have the least growth in the next 20 years?
a. hydroelectricity
b. coal
c. natural gas
d. nonhydro renewables

Answers

A hydroelectricity
Renewable resource

All animals are eukaryotes. In a sentence or two, explain what this means.

Answers

A eukaryote is any organism whose cells have a cell nucleus and other organelles enclosed within membranes. Eukaryotes belong to the domain Eukaryota or Eukarya, and can be single-celled or multi-cellular.

Answer:

All animals are eukaryotes means they all have a well-defined nucleus and other organelles.

Explanation:

Eukaryotic organisms mean true nucleus. The organism has a nucleus are eukaryotes. certain exclusive characteristics:

They contain a nucleus. They have other organelles such as mitochondria, endoplasmic reticulum, Golgi body, etc.

All animals have a well-defined nucleus and other organelles.

Hence from the above discussion, we can say that All animals are eukaryotes means they all have a well-defined nucleus and other organelles.

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Identify the incorrect pair. identify the incorrect pair. synarthrosis; immovable joint amphiarthrosis; slightly movable joint chondrosis; freely moving joint gomphosis; articulation between tooth and bone they are all correct; there is no incorrect pair.

Answers

there is no incorrect pair

When two average-height parents give birth to a child exhibiting achondroplasia, it is most likely due to a new mutation. this is because __________?

Answers

The question already suggests the answer: if the child has a genetic disease that both parents don't, there are only two possibilities: 

- the gene is recessive and both of the parents are carriers, but since they only have one of the genes, it doesn't manifest for them

- the gene is dominant - but then one of the parents  (or both) would have it too - so it must be a new mutation

answer: it's caused by a dominant gene

"describe how prolonged immobilization results in muscle injury"

Answers

Rhabdomyolysis constitutes a common cause of acute renal failure and presents paramount interest. A large variety of causes with different pathogenetic mechanisms can involve skeletal muscles resulting in rhabdomyolysis with or without acute renal failure. Crush syndrome, one of the most common causes of rhabdomyolysis presents increased clinical interest, particularly in areas often involved by earthquakes, such as Greece and Turkey. Drug abusers are another sensitive group of young patients prone to rhabdomyolysis, which attracts the clinical interest of a variety of medical specialties. We herein review the evidence extracted from updated literature concerning the data related to pathogenetic mechanisms and pathophysiology as well as the management of this interesting syndrome. Keywords: Rhabdomyolysis, acute renal failure, myoglobin, crush syndrome The first case of the crush syndrome, which constitutes one of the main causes of rhabdomyolysis, was reported in Sicily in 1908, after an earthquake1,2. In 1930, in the Baltic area, an epidemic of myoglobinuria was observed due to consumption of contaminated fish. Interest in rhabdomyolysis and crash syndrome was stimulated during the World War II particularly after the bombing in London, where the victims developed acute renal failure and myoglobinuria1. Rhabdomyolysis is a rupture (lysis) of skeletal muscles due to drugs, toxins, inherited disorders, infections, trauma and compression3. Lysis of muscle cells releases toxic intracellular components in the systemic circulation which leads to electrolyte disturbances, hypovolemia, metabolic acidocis, coagulation defects and acute renal failure due to myoglobin4. The skeletal muscle consists of cylindrical myofibrils, which contain variant structural and contraction proteins. Actin and myosin, arranged in thin and thick filaments respectively, form the repeated functional units of contraction, the sarcomeres5. The sarcoplasmic reticulum constitutes an important cellular calcium storage. It is structurally connected to the t-tubules, that are formed by invaginations of the muscle cell plasma membrane, the sarcelemma, around every fibril (Figure 1). After the sarcelemma depolarization, the stimulation arrives, through the t-tubules junctions, at the sarcoplasmic reticulum, inducing the calcium ions release and triggering muscle contraction6.

Prolonged immobilization causes muscle atrophy, which leads to muscle weakening and reduced function due to the muscles not receiving regular stimulation. Improper immobilization of fractures can cause misalignment during healing, further injuring muscles. Exercise and rest are crucial for preventing and recovering from muscle injuries, while improper technique can lead to overuse injuries.

Prolonged immobilization can have detrimental effects on muscle tissue, leading to muscle atrophy and injury. When muscles are not subjected to regular activity or strain, such as in cases where individuals experience extended bed rest, spaceflight, or being immobilized due to injury, they begin to weaken and decrease in size.

The muscle fibers become smaller, resulting in overall muscle weakening, which, in turn, diminishes strength and function. This process occurs because the muscles are deprived of the regular stimulation needed for maintaining muscle mass and protein content.

Additionally, immobilization can lead to the damage of syndesmotic joints and the associated muscles. If a fracture is not properly immobilized, the muscles that are still trying to contract can cause misalignment during the healing process, exacerbating the injury and leading to prolonged recovery times.

Furthermore, when muscles have undergone significant damage, their capacity to produce power is compromised due to the loss in muscle fiber quantity and quality. Regular exercise and stretching are essential to prevent muscle injury and to encourage recovery and strength-building following an injury.

However, it is critical to balance exercise with adequate rest, as overuse injuries can occur from activities such as resistance training without proper rest and recovery time. These injuries may include damage to muscle fibers, tendons, or bones, and they highlight the need for careful alignment and technique during exercises to prevent further harm to the muscles.

_____ is considered a pioneer in the area of suicide study.

Answers

edwin schneidman is considered a pioneer in the area of suicide study

A ball-and-socket joint is capable of a complex movement that involves flexion, extension, adduction, and abduction performed in rapid succession called __________.

Answers

Circumduction

This type of movement from a ball-and-socket joint involving flexion (bending movement around the joint), extension (straightening of the joint), adduction (moving towards the midline of the body), and abduction (moving away from the body), follows a circular or conical path--hence, the term "circumduction." 

The most common examples of circumduction are those of the arms, from the shoulder joint, and the legs, from the hip joint. 

The examination of urine to determine the presence of abnormal elements is known as .

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Answer:  "urinalysis" .
_________________________________

20 POINTS FOR FIRST PART AND 20 POINTS FOR THE SECOND PART
Identify the first step of the Calvin cycle and DESCRIBE what happens?

Answers

The Calvin cycle (also known as the Calvin–Benson cycle) is the set of chemical reactions that take place in chloroplasts during photosynthesis. The cycle is light-independent because it takes place after the energy has been captured from sunlight.

Final answer:

The initial step of the Calvin cycle is carbon fixation, where CO₂ is attached to RuBP to form a six-carbon compound that splits into two molecules of 3-PGA, catalyzed by the enzyme rubisco, setting the stage for the subsequent sugar production using ATP and NADPH.

Explanation:

The first step of the Calvin cycle is known as carbon fixation. During this phase, CO₂ from the atmosphere is attached to a five-carbon molecule called ribulose-1,5-bisphosphate (RuBP). This reaction is catalyzed by the enzyme ribulose-1,5-bisphosphate carboxylase/oxygenase, commonly known as rubisco. The result is a six-carbon compound that immediately splits into two three-carbon molecules of 3-phosphoglycerate (3-PGA). This is how CO₂ is 'fixed' from its inorganic form into an organic molecule, which can then be further transformed through the Calvin cycle with the help of energy carriers ATP and NADPH generated during the light reactions of photosynthesis. These energy carriers provide the necessary energy to eventually transform the 3-PGA molecules into glucose.

Why is taking vitamin c ineffective at enhancing iron absorption from standard iron supplements?

Answers

The iron in the supplement is already in the ferrous form.

For the d3s1358 str locus, which allele arrangement (genotype) was suspect a?

Answers

the answer is: 14,14

Compare two ways that the binding of a signal molecule to a receptor protein causes a change in the activity of the receiving cell

Answers

Cell signalling is a process by which cells communicate with each other and transfer messages. When a signal molecule binds to a receptor protein, changes occur in the receptor proteins. Two changes are listed below:
1. The receptor protein undergoes conformational changes and acts as an enzyme.
2. The receptor protein that makes a second messenger molecule that leads the reaction further to other cells or molecules.

What do holes in volcanic rock illustrate about the condition in which it was formed? Wright a short summery paragraph.

Answers

holes in the rock mean that after gasses and pressure build up in a volcano it spews hot magma (lava) as the magma cools it starts to turn hard but inside of the magma there are still gasses that haven't gotten out so when the magma hardens the gasses get stuck causing there to be holes. 

The laboratory report of a client reveals that the platelet count is 60,000/µl (60 x 10 9/l). which integumentary changes can be anticipated in this client? cyanosis petechiae varicosity ecchymosis hematoma

Answers

Having a platelet count of 60,000/mirol is below the normal count of 150,000 which is called thrombocytopenia. With this low platelet count, our skin which is part of the integumentary system will show signs of Petechiae. Petechiae are formed and seen on the skin when capillaries underneath leaks blood due to low platelet count. Petechiae is commonly found on a person suffering from Dengue Hemorrhagic fever Disease where platelet count decreases.

In humans, oxygen is effectively delivered to the tissues because of the presence of several allosteric modulators. name three of these modulators and explain how their presence allows oxygen to be delivered to the tissues.

Answers

Els moduladors al·lostèrics que actuen en els humans són el 2,3-Bisfosfoglicerat (2-3-BPG),el CO2 i els H+ . El 2,3-BPG s'uneix al centre del tetrà mer de l'estat T i així l'estabilitzà launió per interaccions iòniques. Els protons actuen perquè quan el pH és baix l'hemoglobinadisminueix la seva afinitat per l'oxigen (efecte Bohr). L'augment de la concentració del CO2 té el mateix efecte perquè el CO2 es combina en H2O i es dissocia en HCO3-i H+ i per aixòdisminueix l'afinitat de l'hemoglobina perquè augmenta la concentració de protons
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