what’s the difference between an endoskeleton and an exoskeleton

Answers

Answer 1
Endoskeleton is the internal support of the structure of an organism. an exoskeleton is the external support 
Answer 2
Final answer:

An endoskeleton is an internal skeleton that grows with the organism and can support larger beings, found in humans. An exoskeleton is a hard outer shell found in animals like crabs and insects, providing better protection but limiting growth and size.

Explanation:

An endoskeleton is an internal skeleton that consists of hard, mineralized structures located within the soft tissue of organisms. For example, humans have an endoskeleton. Endoskeletons provide support for the body, protect internal organs, and allow for movement through muscle contraction. An essential part of endoskeletons is that they can grow as the organism grows, and they can support larger organisms.

On the contrary, an exoskeleton is an external skeleton that consists of a hard encasement on the surface of an organism. Examples include the shells of crabs and insects. This type of skeleton provides defense against predators, supports the body, and enables movement through the contraction of muscles. However, they do not grow with the organism, and as a result, organisms with exoskeletons must periodically shed them to allow for growth.

Exoskeletons also provide greater protection for the internal organs, but at the cost of mechanical leverage, as the muscles must cross a joint inside the exoskeleton. Moreover, the weight and thickness of the exoskeleton limit the size of an organism that can be supported.

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Related Questions

Which study led biologists to infer that the ancient archosaur was active during the night? ancestral state reconstruction suggesting that these animals had red fluorescent protein ancestral state reconstruction suggesting that these animals had green fluorescent protein ancestral state reconstruction suggesting that these animals had opsins that were shifted toward the red molecular clock analysis suggesting little evolutionary change from the archosaurs to their nocturnal descendants molecular clock analysis suggesting a great deal of evolutionary change from the archosaurs to their nocturnal descendants?

Answers

The correct option is this: ANCESTRAL STATE RECONSTRUCTION SUGGESTING THAT THESE ANIMALS HAD OPSINS THAT WERE SHIFTED TOWARD THE RED.
Ancestral reconstruction is the extrapolation back in time from measured characteristics of individuals to their common ancestors. Opsins are a group of light sensitive proteins that are located in the photoreceptor cells of the retina of the eyes. Having opsin that were shifted toward the red colour will enable the animal to see very well in the night time, thus, the animal will be active during that period.

The nasal cavity is divided internally by the nasal __________ into right and left sides.

Answers

The nasal cavity is divided internally by the nasal septum.

I hope this helps!
Final answer:

The nasal cavity is divided internally by the nasal septum into right and left sides.

Explanation:

The nasal cavity is divided internally by the nasal septum into right and left sides. The nasal septum is formed anteriorly by a portion of the septal cartilage, the perpendicular plate of the ethmoid bone, and the vomer bones.

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What are the specialized parts of the phospholipid bilayer, and how do their structures relate to the structure of the plasma membrane?

Answers

The specialized parts are called lipid rafts, which is comprise of hospholipase that are way too similar to each other and does not have proteins which are linked with them. These are accountable for cell to cell communication, gesturing, and acknowledgment.

Final answer:

The specialized parts of the phospholipid bilayer are phospholipids, proteins, and carbohydrates. Their structures relate to the structure of the plasma membrane by forming a barrier that separates the watery environments on either side of the membrane and by facilitating various functions such as transport and cell signaling.

Explanation:

The specialized parts of the phospholipid bilayer include phospholipids, proteins, and carbohydrates. Phospholipids are the main component of the bilayer and consist of a hydrophilic head and two hydrophobic tails. The hydrophilic heads face the watery environments, while the hydrophobic tails are in the interior.

Proteins are embedded in the bilayer and have various functions, such as transport of molecules and cell signaling. They are either integral proteins that span the entire bilayer or peripheral proteins that are loosely attached to the membrane.

Carbohydrates are attached to proteins or lipids on the outer surface of the membrane, forming complexes that help identify the cell to other cells.

What part of an amino acid makes it unique from other amino acids?

Answers

The "R" group of an amino acid makes it unique from other amino acids

Final answer:

An amino acid's unique character comes from its side chain or R-group, which varies in size, structure, and properties, defining its polarity, charge, and hydrophilicity, and influencing protein assembly and function.

Explanation:

The part of an amino acid that makes it unique from other amino acids is its side chain or R-group. All amino acids share a common structure, which includes an amino group (NH2), a carboxyl group (COOH), a hydrogen atom, and a central carbon atom. However, the R-group varies between amino acids in size, structure, and properties, such as polarity, charge, and hydrophilicity.

For instance, amino acids like valine, methionine, and alanine have nonpolar, hydrophobic side chains, while others like serine, threonine, and cysteine have polar, hydrophilic side chains. Additionally, amino acids like lysine and arginine have positively charged side chains, which make them basic amino acids. These unique side chains influence how proteins are assembled and function.

Answer to what type of arthropod appendage is comprised of a single series of segments attached end-to-end, rather than branching into two?

Answers

 The uniramous type of the appendages of arthropods are comprised of a single series f segments attached end-to-end, rather than branching into two. The other type of arthropod appendages are biramous. The biramous limb branches into two, and each branch consists of a series of segments attached end-to-end.

Appendages of the arthopods can be uniramous or biramous.

Further Explanation:

An arthropod is known to be an invertebrate animal with an exoskeleton, paired jointed appendages, and a segmented body. It forms the phylum called Euarthropoda that involves insects, crustaceans, and arachnids. They are characterized by jointed limbs as well as cuticle which are made up of chitin that is often mineralized with the calcium carbonate. The body plan comprises of segments, each having a pair of appendages. The hard cuticle blocks the growth and so arthropods substitutes it periodically by molting.

Arthropod leg refers to the kind of jointed appendage of the arthropods and it is usually used for the walking purposes. According to the appendages, arthropods can be biramous or uniramous. The uniramous limb consists of one series of segments linked from one end to another whereas, biramous limb branches into two and each of it comprises of the row of segments which are linked end to end.

The external branch or ramus of the appendages found in crustaceans refers to exopod or exopodite whereas the internal one is known as endopodite or endopod. The exopodites are completely absent in the insects while can be seen missing in amphipods and isopods.

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Answer Details:

Grade: High school

Subject: Biology

Chapter: Organism classification

Keywords:

Appendages, arthropod, biramaous, uniramous, exopod, insects, endopodites, segments, Euarthropoda, moulting, cuticle, chitin.

What were the three key observations made by darwin that allowed him to deduce that natural selection is a primary driver of evolution?
a. the number of adults tends to remain the same over time, individuals vary very little over time, and natural selection works on only the best of those adults in each generation.
b. species change and adapt based on environmental pressure, individuals change within their lifetime, and offspring inherit the changes.
c. genetic drift, gene flow, and mutations provide the change necessary in populations that affect future generations.
d. organisms produce more offspring than survive, variation exists among members of populations, and advantageous variations increase in relative frequency over time?

Answers

Your answer is C! Hope this helps
Hello There!

From my study of this topic, the answer has to be A.

Hope This Helps You!
Good Luck :) 

- Hannah ❤

What characteristic of cardiac muscle causes contraction of the heart as a unit?

Answers

The cardiac muscle has intercalated disk that allows rapid transmission of the impulse. This will allow the cardiac muscle to have a coordinated way. The heart muscle has pacemaker that will spread the signal in regular time. The transmission of impulse is also controlled by a few checkpoint like the bundle of his to make the signal to the Purkinje fiber of left and right ventricle at the same time.

Why phospholipids have a hydrophilic head and hydrophobic tails?

Answers

The phospholipid head and tail creates a balance and help maintain the barrier between the outside environment and the inside of a cell. It also prevents certain molecules from entering that can damage the cell.
Because its a phospholipid

Contrast the major differences between the organization of dna in viruses and bacteria versus eukaryotes.

Answers

bacteria-loose DNA, No Mitochondria, No Nucluse, have Ribosome,
Eukarotes,Contain microganism 

75% sure

Answer:

    Viruses and bacteria have a very specific way of organizing their own genetic  material inside themselves.

Explanation:

     On viruses, this can vary a little bit, but most of them will have their genetic material not confinated in a nucleus, but so, spread along all of the cytoplasm. This can be because of very different reasons, and the bacteria have the same thing here, they too have their genetic material spread all across their cytoplasm.

     Instead of that, eukaryotes have something that the scientists call the nucleus. This nucleus contains all the DNA a cell needs to produce the proteins for the body, but remember, the protein making process happens inside and out of the nucleus.

What causes thermal convection that drives plate motion?

Answers

Answer:An unequal distribution of heat is correct on grad point

Explanation:

Final answer:

Thermal convection that drives plate motion is caused by heat in the Earth's interior. As the heat causes less dense material to rise and denser material to sink, it drives the movement of the tectonic plates. This process also acts as a cooling system for the Earth.

Explanation:

The cause of thermal convection that drives plate motion is primarily the heat coming from Earth's interior. This heat, which becomes trapped within the mantle, leads to the thermal convection process that continuously drives the motion of tectonic plates. The warmer, less dense material rises, while the colder, denser material sinks, creating a cycle of movement and heat transfer.

Plate tectonics, a fundamental theory in geology, results from this thermal convection. Earth's crust and upper mantle (up to about 60 kilometers in depth) are divided into nearly a dozen tectonic plates that fit together like puzzle pieces. In some locations, such as the Atlantic Ocean, these plates are moving apart. In other areas, like off the western coast of South America, they are moving towards each other.

This process can be described as a natural cooling system for the planet, aiding in the efficient transfer of accumulated heat from Earth's interior out into space. Different planets develop unique heat transfer processes as they evolve, which may differ from Earth's due to varied chemical compositions and other factors.

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A client who has developed congestive heart failure must learn to make dietary adaptations. the client should avoid:

Answers

If a client who has developed congestive heart failure is taking dietary adaptations, the client should avoid eating foods that have high salt content of which the individual should only eat foods that are low in salt content such examples are; poultry, fish and milk.

The fact that the helixes of the dna strand are arranged in opposite directions gives dna its _____ characteristics.

Answers

sorry but it does not show your question. do you think you could post it again?

Viruses are not considered living organisms because they do not independently grow, metabolize, or reproduce.
a. True
b. False

Answers

The answer is true as they lack the properties a living organism would have
Final answer:

Viruses are not considered living organisms because they do not independently grow, metabolize, or reproduce. - True

Explanation:

Viruses are not considered living organisms because they do not grow, metabolize, or reproduce independently. They are acellular and require a host cell to replicate. Thus these are not considered living organisms because they cannot grow, metabolize, or reproduce independently. Unlike living organisms that have cells and carry out all necessary life functions on their own, viruses are acellular and require a host cell to replicate.

A virus attaches to a host cell, injects its genetic material into the cell, and then uses the host cell's machinery to replicate itself. This makes viruses dependent on other cells and unable to carry out essential life processes independently.

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A nurse is caring for a client diagnosed with schizophreniform disorder. the nurse demonstrates understanding of this disorder when identifying that the client is at risk for developing what?

Answers

It's pretty obviously schizophrenia.  Like schizophrenia, schizophreniform disorder is a type of "psychosis" in which a person cannot tell what is real from what is imagined..

Which chest examination findings can be observed in a client with pneumonia? increased fremitus over affected area on palpation?

Answers

The answer to this question would be: true

In pneumonia, there is an infection in one or more lobes of the lung. This will result in increased fremitus. That was because the inflamed lungs become denser, thus increasing the ability to transmit the vibration. Other examination that can be found would be ronchi and dulled percussion. 

20 points and brainleist to whoever answers each question.When did stem cell research become known? Who discovered stem cells? What experiments or studies have been conducted so far?

Answers

Hey you! Here's your answer: 

1) Scientists discovered ways to derive embryonic stem cells in 1981, more than 30 years ago. 

2) Canadian Scientists Dr. James Till and Ernest McCulloch, who did pioneering studies in stem cell research, were the first to discover stem cells.

3) Thousands of experiments and studies have already been conducted on stem cells and research.

I Really Hope This Helped You! :)

Skeletal muscle is controlled by the organism.

Which best describes what this means in terms of movement?

A) Any muscle attached to the skeleton is voluntary and may be used for movement.

B) Some of the muscle attached to the skeleton is involuntary and may be used for movement.

C) Some of the muscle attached to the skeleton is voluntary and may be used for movement.

D) All of the muscles attached to the skeleton are involuntary and may be used for movement.

Answers

Answer: The correct answer is-

C) Some of the muscle attached to the skeleton is voluntary and may be used for movement.

Skeletal muscle primarily includes voluntary muscles that are generally attached to the skeleton.

Skeletal muscles help in moving body parts and can also contracted involuntarily by certain reflexes.

For instance, we can choose to move our legs, but we may start jumping automatically if our finger gets burn on a gas stove.

In this question, skeletal muscle is controlled by the organism.  This indicates that Some of the muscle attached to the skeleton is voluntary and may be used for movement.

Thus, option C) is the right answer.

Answer:the answer is c

Explanation:

Diffusion of oxygen from an alveolus into a pulmonary capillary belongs to which aspect of respiration?

Answers

Cellular respiration

True or false cellular ingestion and destruction of particulate matter is called phagocytosis

Answers

 It would be true, phagocytosis is considered "cell eating" the opposite of pinocytosis (cell drinking) phagocytosis is the process in which phagocytes engulf and digest microorganisms and cellular debris; an important defense against infection.

Compare and contrast stereo hearts and a red red rose answer key

Answers

The difference between the two phrases is that My hearts a stereo is classified as a metaphor for it defines the heart like a stereo without using the key words like or as, while the phrase, my loves like a red, red rose, is classified as a simile because it uses the key word like, the person describes his or her love like a red, red rose.

Final answer:

The 'Stereo Hearts' and 'A Red Red Rose' both use symbols to explore the theme of love. In 'Stereo Hearts,' love is compared to a nonstop music playlist, while 'A Red Red Rose' traditionally employs the rose as an emblem of deep affection. Both pieces articulate a profound connection between love and sacrifice.

Explanation:

The comparison between 'Stereo Hearts' and 'A Red Red Rose' can be directly related to their usage of symbols and exploration of theme. 'Stereo Hearts' by Gym Class Heroes, presumably, being a modern song, uses the metaphor of a stereo as a heart to express undying love and the continual play of affection, similar to an evergreen playlist. In contrast, 'A Red Red Rose' by Robert Burns, uses the traditional symbol of a red rose as an expression of deep romantic love. The themes of both focus on the depths of love and passion portrayed through their respective symbols.

Furthermore, in literature and art, a rose often symbolizes love, and this connects with the passage "And the marvellous rose became crimson, like the rose of the eastern sky. Crimson was the girdle of petals, and crimson as a ruby was the heart." Similarly, 'Stereo Hearts' might evoke the image of music as a means to communicate love, making a connection between a lover's heartbeat and the beat of a song.

Quoting from another resource, "If you want a red rose," said the Tree, "you must build it out of music by moonlight, and stain it with your own heart's-blood. You must sing to me with your breast against a thorn. All night long you must sing to me, and the thorn must pierce your heart, and your life-blood must flow into my veins, and become mine." This quote exemplifies the depth of commitment and sacrifice in the pursuit of authentic love, where personal suffering is a measure of the love's intensity.

Barnacles are organisms that live in aquatic environments and live stationary lives attached to hard surfaces. Their feathery appendages catch food as it passes by, making them very successful in tidal waters and within coral reefs. How would scientists best determine the fitness of barnacle populations?

counting the number of surviving offspring a population produces

placing the barnacles in a new environment to determine survival rates of populations

studying the frequency of genes and alleles to determine fitness

counting the number of identical offspring produced by a parent population

Answers

The correct option is A.
Fitness refers to the quantitative representation of natural and sexual selection within an evolution. Fitness can be defined in respect to a genotype or a phenotype. Relative fitness is described as the survival or reproductive rate of a genotype or phenotype relative to maximum survival or reproductive rate of other genotypes in the population. Thus, the fitness of a population can be determined by finding out the number of offspring that survive to adulthood.

The response of an organism to the duration of light it receives in a day is called:

Answers

The answer is called photoperiodism. Hope this helps.

when DNA replication occurs before meiosis, the original DNA strand CAG TGT CCG TAG is copied into complementary strand GTC CTA CGG ACA. what type of mutation has occurred

A.)deletion
B.) insertion
C.)inversion
D.) substitution

Answers

The answer is " C)inversion "

What characteristics do geologists look for when observing a rock?

Answers

It’s color, texture, scratch, and toughness.

In the lock-and-key model of enzyme action, the ___________ fits into the __________ of the enzyme.
a.product; substrate.
b.active site; product.
c.substrate; active site.
d.active site; substrate.

Answers

The answer is letter D. Substrate; Active Site The enzyme itself remains unchanged.  It advise the active place of an enzyme is frequently reshaped by interactions with the substrate until the substrate is completely bound and the chemical reaction occurs, the lock and key model.

wrong, the actual answer is C

Which of the following species would you most expect to be distributed according to a regular pattern?
a. termites
b. stingless bees
c. fish
d. creosote bushes

Answers

The correct answer is option d. creosote bushes.

The plants, especially bushes have a more regular or uniform distribution as compared to the animals. The uniform distribution of the plants helps in the distribution of the nutrients and the space. Also, they cannot move so random distribution is rarely seen in bushes.

The small animals tend to live in groups, hence, they generally show clumped distribution. The large fishes or animals are generally randomly distributed as they cannot live in groups.

Creosote bushes species is distributed according to a regular pattern.

Further Explanation:

The regular pattern is defined as the uniform or non-random distribution of a species without any disturbance in the population. Regular or uniform pattern is seen in very less species because there is a frequent occurrence of genetic variation leading to non-uniform or random distribution of specie. For example, a small group of animals gives regular pattern but diverse or large group of animal gives random distribution leading to non- random pattern.

The Creosote bush plant mostly present in warm desserts (such as chihuahuan, Mojave and sonoran dessert). They are the most important and common plant in warm desserts. They have two very unique features that they can live without water for almost two years. Also, they produce same colonies which have the same genetic makeup. They have a very uniform or regular distribution of their species as compared to other animals. The uniform distribution or regular pattern provides equal distribution of nutrient, space and salts. The creosote bush even not moves randomly so it is very rare to see random distribution in this plant.

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Answer Details:

Grade: High School

Subject: Biology

Chapter: Ecology

Keywords:  

Creosote bush, feature, random distribution, genetic makeup, random, plant, animal, uniform distribution, regular pattern, dessert, water, colonies.

Stimulated digestion is to inhibited digestion as the

Answers

The answer is stimulated digestion is to inhibited digestion as the parasympathetic nervous system is to the sympathetic nervous system. Hope this helps.

Which of the following best describes how the cells formed during mitosis compare to the cells formed during meiosis? Mitosis produces four genetically identical cells, while meiosis produces two genetically different cells. Mitosis produces two genetically different cells, while meiosis produces four genetically identical cells. Mitosis produces two genetically identical cells, while meiosis produces four genetically different cells. Mitosis produces four genetically different cells, while meiosis produces two genetically identical cells.

Answers

The third one is correct. Mitosis creates two identical cells. Meiosis creates four different cells.

Answer:

Mitosis produces two genetically identical cells, while meiosis produces four genetically different cells.

Explanation:

Mitosis and Meiosis are both kinds of cellular division that occurs in all living cells, however, they are used for different purposes. Mitosis is a type of cell division that produces two daughter cells that are identical to the parent cell. They are identical in the sense that they contain same alleles of the same genes as the parent cells. It is usually used for growth, repair or REPRODUCTION in asexually-reproducing organisms.

On the other hand, meiosis is a type of cell division that results in four daughter cells with each having a reduced number of chromosomes as the parent cell (by half). It is employed by only sexually reproducing organisms to produce gametes. Meiosis occurs in a two-step division process resulting in 4 daughter cells. Meiosis increases genetic variation among species by producing gametes that are genetically different from the parent cell. This is achieved by a process called CROSSING-OVER, peculiar to meiosis, where chromosome segments are exchanged between homologous chromosomes (non-sister chromatids).

The muscles that surround external body openings typically have a ________ fascicle arrangement. parallel convergent pennate circular

Answers

Final answer:

The muscles that surround external body openings typically have a circular fascicle arrangement. This allows control over the opening and closing of these body openings.

Explanation:

The muscles that surround external body openings, such as the orbicularis oris of the mouth and the orbicularis oculi of the eye, typically have a circular fascicle arrangement. This arrangement allows these muscles to control the opening and closing of these body openings. The term fascicle relates to the grouping of muscle fibers. In a circular fascicle arrangement, the muscle fibers are positioned in concentric circles and contract to close the opening they surround.

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Final answer:

The muscles surrounding external body openings, like the mouth and eyes, typically have a circular fascicle arrangement, allowing for the control of opening and closing these passages.

Explanation:

The muscles that surround external body openings, such as the mouth and eyes, typically have a circular fascicle arrangement. This pattern, also known as orbicular, allows these muscles to control the opening and closing of these bodily passages. For instance, the orbicularis oris and the orbicularis oculi in our face, control the opening and closing of our mouth and eyes respectively.

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A red blood cell is 90% water. A red blood cell is suspended in an 11% water solution. A diagram is placed below. What will most likely happen to the red blood cell?

Answers

The cell will shrink because there is more water in the cell than the surrounding solution.

THE CELL WORLD SHRINK!!!

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