What are the 6 levels of organization for ecology

Answers

Answer 1

Though technically there are six levels of organization in ecology, there do exist some sources which only identify five levels, namely organism, population, communities, ecosystem, and biome; excluding biosphere from the list.

Hope i Helped! :)

Answer 2
Ecological Organization

1. At the lowest level of ecological organization, you find individual species of living organisms. Every single plant and animal species on the planet, right from microscopic bacteria and fungi to mammoth blue whale and Giant Sequoias, finds a place at this level of the ecological pyramid. The distribution of these species is governed by abiotic factors of the said region.

2. The second level of this pyramid comprises the population of individual species featuring in the first level. In this case, population refers to a group of species living together in a demarcated geographical area. For instance, a herd of wildebeests in African Savannah or coyotes in North American Prairies.

3. The third level of ecological pyramid comprises communities of different species which live together in a demarcated geographical area and interact with each other. This interaction between the members of these communities often revolves around the concept of predator-prey and symbiotic relationships.

4. At the next level of ecological organization lies the ecosystem, a biological environment comprising all the living organisms and non-living things (or abiotic factors such as air, soil, and water) in a particular region and the interaction between them. Though many people refer to these levels as the levels of organization in an ecosystem, it is technically incorrect as ecosystem in itself is one of the levels of ecological organization.

5. The fifth level of an ecological pyramid is that of a biome, a major biotic community which is typically characterized by dominant forms of vegetation and climatic conditions. Some of the most prominent biomes of the world include the desert biome, rainforest biome, Savannah biome, etc.

6. The last level of the ecological pyramid is the biosphere, which is made up of the Earth’s surface and atmosphere. It is also known as the zone of life on Earth, owing to the fact that all lifeforms found on the planet coexist here. Simply put, it is the sum of all the ecosystems of this planet.

Though technically there are six levels of organization in ecology, there do exist some sources which only identify five levels, namely organism, population, communities, ecosystem, and biome; excluding biosphere from the list. With the amount of biodiversity that the planet boasts of, the idea of classifying environment into different levels surely comes handy in studying the environment.

Related Questions

how would the second row of values in the plant experiment most likely compare to the second row of values in the original experiment

Answers

The second row of values in plant experiment most likely to have "high oxygen level and carbon  dioxide level would be the same".

Explanation:

The procedure by which living things convert oxygen and glucose to water and carbon, accordingly yielding vitality is called photosynthesis. It does not require the nearness of daylight and is continually happening in living life forms. Cell breath occurs in the mitochondria of cells.  

Through these procedures, plants get the carbon dioxide they need, and living life forms get the oxygen they need. They are additionally crucial to the vitality trade that living things need to endure.

1.
Choose the best answer.

The Golgi apparatus is the _____ of the city.

post office

power plant

city hall

manufacturing plant



2.
Choose the best answer.

How does a negative feedback loop respond to a variable?

speeds up the process

changes the stimulus

stops the stimulus

makes no change



3.
Choose the best answer.

Which organelle is RNA contained in?

endoplasmic reticulum

ribosomes

nucleus

cell membrane



4.
Choose the best answer.

The heart is made of which type of tissue?

cardiac

muscular

skeletal

smooth



5.
Choose the best answer.

Homeostasis keeps the body _____.

balanced or stable

unbalanced

in a positive feedback loop

in a negative feedback loop



6.
Choose the best answer.

Which of the following processes is a positive feedback mechanism of the endocrine system?

glucose control

reflex

temperature control

clotting



7.
Choose the best answer.

What is the function of muscular tissue?

movement

secretion

protection

absorption



8.
Choose the best answer.

What is it called when areolar tissue collects water?

tissue collection

osmosis

inflammation

edema



9.
Choose the best answer.

The nucleus is the _____ of the city.

transportation

post office

manufacturing plant

city hall



10.
Choose the best answer.

The city limits represents which part of the cell?

cell membrane

lysosomes

cytoplasm

nucleus



11.
Choose the best answer.

Which level of organization is blood?

cell

organ

organ system

tissue



12.
Choose the best answer.

What happens during prophase?

the nucleus disappears

chromosomes move to the edges

cell life cycle

cells reproduce



13.
Choose the best answer.

What is the function of the mitochondria?

packaging proteins

energy

control mechanisms

reproduction



14.
Choose the best answer.

Contractions during labor are _____ feedback mechanism.

positive

mitotic

negative

meiotic



15.
Choose the best answer.

Simple epithelial tissue has _____ layer(s).

two

one

three

four



16.
Choose the best answer.

Which is NOT a classification of muscle tissue?

dense

cardiac

skeletal

smooth



17.
Choose the best answer.

How does a positive feedback loop respond to a variable?

changes the stimulus

makes no change

increases the stimulus

stops the stimulus



18.
Choose the best answer.

Lysosomes are responsible for _____.

waste removal

control mechanisms

reproduction

packaging proteins



19.
Choose the best answer.

An overgrowth of cells is called _____.

cytokinesis

meiosis

cancer

disease



20.
Choose the best answer.

What is the receptor’s role in the homeostatic control mechanisms?

determines the best response

sets the control point

sends the message to the variable

recognizes the variable


Answers

Answer: manufacturing plant

Explanation:

Answer:

1.post office

2.changes the stimulus

3.nucleus

4.muscular

5.balance or stable

6.reflex

7.movement

8.tissue collection

9.city hall

how ach changes the ion permeability of the sarcolemma?

Answers

The complete question is :

Which of the following best describes how ACh changes the ion permeability of the sarcolemma?

A) ACh activates acetylcholinesterase.

B) ACh entry into the axon terminal causes neurotransmitter release.

C) ACh binds to receptors in the junctional folds.

D) ACh entry into the muscle fiber causes Ca2+ to be released by the sarcoplasmic reticulum.

Answer:

C) ACh binds to receptors in the junctional folds.

Explanation:

Sarcolemma is the term used for the cell membrane of the skeleton muscle fiber cell.

At the motor end plate, there are several folds present in the sarcolemma that are known as junctional folds.

These junctional folds have several acetylcholine (Ach) receptors present on them and these are ion channels that are chemically gated.

These ion channels open upon binding of Ach and thus, the ions can diffuse into the sarcolemma.

Thus, the binding of Ach on the receptors located in the junctional folds increases the ion permeabiltity of the sarcolemma.

Answer:

C) ACh binds to receptors in the junctional folds.

Explanation:

ACh binds to receptors in the junctional folds. diffuses into the muscle fiber through open chemically gated ion channels. binds to ACh receptors, causing them to open chemically gated ion channels.

After the Aswan High Dam was built on the Nile River, the rate of parasitic blood-flukeinfection doubled in the human population near the dam. As a result of building the dam, the flow of the Nile changed. This changed the habitat, which resulted in an increase in its population of a certain aquatic snail. The snails, which were infected, released larvae of the fluke. These larvae then infected humans. This situation best illustrates that:
a.the influence of humans on a natural system is always negative in the long termb.the influence of humans on a natural system can have unpredictable negative impactsc.human alteration of an ecosystem does not need to be studied to avoid ecological disasterd.human alteration of an ecosystem will cause pollution and loss of finite resources

Answers

Answer:

b.the influence of humans on a natural system can have unpredictable negative impacts

Explanation:

The situation described best illustrated the fact that the disturbance of natural ecosystem by humans can have unpredictable negative impacts.

Option c is incorrect because human alteration of the ecosystem needs to be continuously studied to avoid ecological disasters.

Option d is incorrect because alteration of the ecosystem does not always end up in the pollution of the ecosystem and loss of finite resources.

While human alteration of the natural ecosystem often have long term negative impacts, many of these impacts can not be predicted until they happen. This makes option b to be more complete than option a.

The correct option is b.

Final answer:

The doubling of parasitic blood-fluke infections after the Aswan High Dam's construction illustrates that human impacts on natural systems can have unpredictable negative effects, altering habitats and increasing disease risks.

Explanation:

After the Aswan High Dam was built on the Nile River, the rate of parasitic blood-fluke infection doubled in the human population near the dam. This increase in infection rates illustrates that the influence of humans on a natural system can have unpredictable negative impacts. Construction of the dam altered the river's flow, creating a new habitat that favored the proliferation of a particular aquatic snail species that harbored the parasitic fluke larvae. These larvae infected humans, showing that human alteration of an ecosystem has complex repercussions, affecting both the ecological balance and human health.

Dams impact the natural water habitat by altering temperatures, chemistry, flow characteristics, and silt loads. This can lead to extensive changes in the ecology, affecting a wide variety of species. Damming rivers, a common practice for human needs, can reduce or eliminate populations that rely on seasonal flow changes, such as certain fish and amphibian species. The case of the Aswan High Dam serves as an example of the unintended ecosystem and health implications of significant infrastructural projects.

Which did Kepler notice about planetary motion that caused him to propose Kepler’s first law of orbital motion?

Answers

The motions of the planets  in the solar system made Keppler propose the laws of planetary motion.

Explanation:

The motions of the planets  in the solar system made Keppler propose the laws of planetary motion.In simple words, Kepler's first law can be defined as all planets moved around the sun in the elliptical orbit having the sun as one of the foci.Kepler’s first law means that planets move throughout the Sun in elliptical orbits. An ellipse is a shape that follows a levelled circle.

Final answer:

Kepler noticed that the orbits of the planets were ellipses, leading to Kepler's first law of orbital motion.

Explanation:

Kepler noticed that the orbits of the planets were not perfect circles, as previously believed, but were actually ellipses. This observation led him to propose Kepler's first law of orbital motion, which states that each planet moves around the Sun in an orbit that is an ellipse, with the Sun at one focus of the ellipse.

Jeanie was playing croquet. The picture below shows her holding her wooden mallet. Jeanie swung her mallet hard and hit her ball. there was a loud "crack!" her ball moved away. what happened to the energy of Jeanie's mallet when her mallet struck the ball?
A. Some of the energy went into the ball, and the rest of it went into the ground.
B. All of the energy went into the air.
C. All of the energy went into the ball.
D. Some of the energy went into the ball, and some of it went into the air.

Answers

Answer:

D. Some of the energy went into the ball, and some of it went into the air.

Explanation:

When Jeanie's mallet hit the ball, some of its energy was transferred to the ball, since the ball moved. The loud noise means that some of the energy was changed into sound. Some of the energy stayed in the mallet, because the mallet did not stop moving when it hit the ball. So, some of the energy went into the ball, and some of it went into the air.

Which of the following catecholamine hormones correspond with the adrenal glands?
Cortisol
Aldosterone
Aldosterine
Glucagon
Dopamine

Answers

Answer:

Dopamine

Explanation:

Dopamine receptors type 2 (D2) are expressed in the adrenal glands. More so, dopamine helps in the modulation of aldosterone and catecholamine secretion from the adrenal gland.

You are concerned with surveying the protozoa in the arboretum soil. While most commonly thought to live exclusively in aquatic environments, protozoa can play an important role in the nutrient cycling that takes place in soil. In addition, protozoa can help maintain the proper balance of bacterial populations within soil, as bacteria are a primary source of food for protozoa.
Protozoa are extremely diverse. However, there are three characteristics common to all organisms called protozoa. What are these three characteristics?

Choose the answer that best describes the three characteristics common to all protozoa.

eukaryotic, contain chloroplasts, produce energy via mitochondria
eukaryotic, use cilia for motility, produce energy via mitochondria
eukaryotic, unicellular, lack a cell wall
eukaryotic, reproduce sexually, contain chloroplasts

Answers

Answer:

eukaryotic, unicellular, lack a cell wall

Explanation:

The protozoa are eukaryotic, unicellular animals whose cell lack cell wall. In addition, they posses the following characteristics:

They live as either free living or parasite in nature. As such, they feed heterotrophically.They are mostly motile through the use of organs like cilia. pseudopodia or flagella.Their size ranges from one micron to several millimeters.They mostly reproduce by binary fission.

Answer:

The correct answer is "eukaryotic, unicellular, lack a cell wall".

Explanation:

Three characteristics that all organisms called protozoa posses is that they all are eukaryotic, unicellular and they lack of a cell wall. Actually the therm "protozoa" is an informal name given to any single-celled eukaryotic organism, which could be either a parasite or could be a free living organism. All protozoa lack a cell wall, which helps them to infect and live from other organisms in the case of the parasitic protozoa.

Why do cattle sex cells (egg and sperm cells) only have 30 chromosomes while the cattle's other cells have 60 chromosomes?

Answers

Answer:

Explanation:

becase it is the way it is the why the have alot  of babe when th4e sperm in a girl

Cattle sex cells (egg and sperm cells) have only 30 chromosomes because they are haploid cells, meaning they contain a single set of chromosomes. This is in contrast to the other cells in cattle, which are diploid and contain two sets of chromosomes, making a total of 60 chromosomes. The process by which haploid cells are formed is called meiosis, and it ensures that when an egg and a sperm fuse during fertilization, the resulting zygote will have the correct diploid number of chromosomes.

 

In cattle, as in many other organisms, there are two types of cells in terms of chromosome number: somatic cells and gametes (sex cells).

1. Somatic Cells: These are the cells that make up the body of the organism, such as skin cells, muscle cells, and nerve cells. In cattle, each somatic cell contains 60 chromosomes, which is the diploid number for this species. These chromosomes are organized into pairs, with one member of each pair coming from the mother and the other from the father.

2. Gametes (Sex Cells): These are the reproductive cells, specifically eggs in females and sperm in males. Unlike somatic cells, gametes are haploid, meaning they contain only one set of chromosomes. In cattle, this means that each gamete has 30 chromosomes. The process of meiosis is responsible for reducing the chromosome number by half.

 - Meiosis: This is a specialized type of cell division that occurs only in the production of gametes. It involves two rounds of division:

 1. In the first round, homologous chromosomes (one from each parent) pair up and exchange genetic material (crossing over), followed by the separation of these homologous pairs into two cells. This results in cells that are still diploid but have only one chromosome from each original pair.

 2. In the second round, the sister chromatids (copies of each chromosome) are separated, resulting in four haploid cells, each with only one set of chromosomes.

3. Fertilization: When an egg and a sperm fuse, their haploid sets of chromosomes come together to form a diploid zygote with the full complement of 60 chromosomes. This restores the diploid number and ensures that the offspring receives genetic information from both parents.

In summary, cattle sex cells have only 30 chromosomes because they are the product of meiosis, which reduces the chromosome number by half to ensure that upon fertilization, the offspring will have the correct number of chromosomes characteristic of the species.

What is the overproduction of rabbits? PLEASE HELP ME!

Answers

Answer:

Overproduction of lipoproteins in rabbits is called Hereditary Hyperlipidemia.

Explanation:

It is metabolic disorder in New Zealand white rabbits, characterized by high cholesterol level. They are induced ovulators.

Mutations in _________ genes lead to transformations in the identity of entire body parts?

Answers

Answer:

Homeotic genes

Which of the following is not true of homologous recombination? Only occurs between regions of DNA sharing >50 basepairs of nearly identical sequence. Can repair a collapsed replication fork. Always accompanied by some loss of DNA sequence. Responsible for crossing over at meiosis. Can repair a double-stranded break in chromosomal DNA.

Answers

Recombination

Explanation:

Always accompanied by some loss of DNA sequence is not true of homologous recombination

Homologous recombination is a type of genetic recombination which requires homology between two DNA moleculesSingle stranded break occurs in same position of both DNA, after that strand invasion occurs Each invading strand joins to the broken end of other DNA molecule, creating a Holliday junctionHolliday junction predicts cross over or non cross over recombinant DNA, depends on whether cleavage is on vertical or horizontal planeCleavage in vertical plane produces cross over recombinant consisting of two heteroduplex DNA

A postsurgical client reports calf pain combined with the emergence of swelling and redness in the area, which have culminated in a diagnosis of deep vein thrombosis. What treatment options will be of greatest benefit to this client?

Answers

Anticoagulation therapy and elevation of the leg
I hope this helps

1. In addition to mechanical and chemical digestion of food, the stomach's other major function is: carbohydrate and nucleic acid digestion. nucleic acid digestion. carbohydrate digestion. food storage. carbohydrate digestion and food storage.

Answers

Answer: Food storage

Explanation:

Stomach is a small pouch like structure which has the ability to store food temporarily.The storage of the food temporarily takes place in the stomach. The food that we eat reaches to the stomach by the help of food pipe.

Here, the food is stored until it is completely broken down into simpler form and enzymes act on them.

The food is then absorbed in the small intestine. But before this food is temporarily stored in the stomach where all the digestive juices and enzymes come to act on the food.

Answer: food storage

Explanation:

The stomach is one of the important parts of the digestive system. It has three main functions to be performed in the animal or human body. It acts as a temporary storage organ for food which passed from the esophagus to the stomach, facilitates the breakdown and mixing of food components with the digestive juices by contraction and relaxation of the stomach muscles and finally aids in digestion of food.

Based on above description, the mechanical and chemical digestion of food by the stomach the other function includes the food storage.

Which stimulus most likely caused the leaves on these trees to turn from green to yellow?
A. too much water
B. change in soil
C. change in seasons
D. too much sunlight

Answers

Answer:

The change in the season

Explanation:

Temperature, light, and water supply have an influence on the degree and the duration of fall colors. Low temperatures above freezing will favor anticyclonic formation producing bright reds in maples. However, early frost will weaken the brilliant red color. Rainy and/or overcast days tend to increase the intensity of fall colors.

Illah?
100%
3. There were originally 32 atoms of a radioactive isotope with a half life of 1,000 years in a fossil. There are 8
undecayed atoms of the isotope remaining. How many years have gone by?
How many half lives has the isotope
been through?
How many years have gone by?
What percentage and fraction of the
original isotope is remaining?
100% )

Answers

Answer:

2,000 years

Explanation:

3,000 years and 3 half lives and 25% of the isotope remains hope this helps god bless

Diseases of animals that may be transmitted to humans are described as

Answers

Answer:

Zoonotic Diseases

Explanation:

Zoonotic Diseases: Disease Transmitted from Animals to Humans. A zoonosis (zoonotic disease or zoonoses -plural) is an infectious disease that is transmitted between species from animals to humans (or from humans to animals)

Example: Corona virus

Animals that commonly transit diseases : Rat, Bat

n the United States and Canada, bats use one of two strategies to survive winter: They either migrate south, or they hibernate. Recently, those that hibernate seem to have come under attack by a fungus, Geomyces destructans (Gd), an attack that is occurring from Missouri to southern Canada. Many infected bats have a delicate, white filamentous mat on their muzzles, which is referred to as white-nose syndrome (WNS). The fungus invades the bat tissues, causes discomfort, and awakens the bat from its hibernation. The bat fidgets and wastes calories, using up its stored fat. The bat then behaves abnormally, leaving its cave during daytime in winter to search for food. Their food, primarily insects, is scarce during the winter, and the bats ultimately starve to death. Since 2007, it is estimated that up to one million bats have perished from WNS.


The Gd mat on the fur of the bats should be expected to consist of _____.

Answers

Answer:

Hyphae

Explanation:

It is given that the bat affected by fungus, Geomyces destructans (Gd) consists of delicate, white filamentous mat on their muzzles which could be possibly the hyphae.  

It is so because the hyphae is made of cells having tubular cell walls which more or less look like internal cross-walls having large pores to absorb nutrients from the surrounding environment (i.e bat’s body) and transport them to thallus. Hyphae are basically long thread like structures that spread throughout their food and release enzymes that break down the food  

How can scientists measure the amount of carbon in soils?

Answers

Answer:

The most accurate standard laboratory test for soil carbon is dry combustion using an elemental analyser. These instruments heat a small sample (usually a fraction of a gram) of dry pulverized soil to around 900 degrees C and measure the carbon dioxide gas that is a combustion product

Explanation:

While observing primates at the zoo, you notice that the particular monkey you are watching uses its hands, feet, and tail to hold on to branches and move throughout its enclosure. What must be true of this monkey?

Answers

Answer:

The monkey is a new world monkey

Explanation:

The New world monkey is the monkeys which are evolved from the old world monkey-like apes and many other genera.

These monkeys have evolved from the old world Simian monkeys in South America about 40 million years ago and adapted to survive in the tropical areas of South America and the regions of Mexico.

This monkey can be characterized by their long-tails called prehensile tails, the use of their hands and feet to walk on the trees.

Since the characters of the monkeys provided in the question show similar characteristics to these, therefore, are considered the New World Monkeys.

What implications need to be considered when creating environmental policies? Pick all that apply?


How much will it cost?

How will it affect the environment?

How will it affect people?

Is the benefit worth the cost?

How will it reduce tourist activity?

Answers

Answer:

How much is the cost?

How much it will affect the environment?

Is the benefit worth the cost?

How will it reduce tourist activity?

Explanation:

Environmental policies refer to our organizations or government commit themselves to the establishment and fulfilment of laws, regulations and other policies mechanism about an environmental issues.

Example include policies on regulation of toxic substances in the environment.

It is important to consider those implications before creating environmental policies because it will determine how effective and beneficial it will be to the environment and people. The cost must be considered if it is worth it, how beneficial will it be, how will it affect the people and environment with in a negative or positive way, will it affect tourist activity, all this need to be considered.

Answer:

Is the benefit worth the cost

Explanation:

I think is this one

This is a two-part process that ends in the assembly of proteins at the ribosomes within cells. The first part

Answers

Answer:

The protein synthesis.

Explanation:

The question is not complete, here is the complete question:

This is a two-part process that ends in the assembly of proteins at the ribosomes within cells. The first part, transcription, begins in the nucleus, when the DNA code is transferred to mRNA. The second part, translation, takes place at the ribosomes, where both mRNA and tRNA work to assemble proteins.

The events in the question are describing protein synthesis.

I hope this answer helps.

The picture shows a giraffe eating leaves.
Which describes the interaction?
O
abiotic interacting with abiotic
biotic interacting with biotic
abiotic interacting with biotic
biotic interacting with abiotic
O

Answers

Answer:

Biotic interacting with biotic is the answer.

Explanation:

Biotic=Alive such as plants,animal,and human.

Abiotic=Non-living

Answer:

Biotic interacting with biotic is the answer.

Explanation:

Just took the practice unit test and got it right

Earle says, “No blue, no green.” Explain what she means by this.

Answers

Answer:

Without the ocean and other water sources, the blue, we can’t have the land, green. Earle compares a waterless Earth to Mars. Earth would be lifeless without the ocean.

*WARNING*

Do not copy this answer word for word, you'll be caught for plagarism!

Explanation:

No blue (water), no green (land and life).

name some short-term changes

Answers

Answer:

environmental : fog , flooding , blizzards, and avalanches

Explanation:

The genetic code is essentially the same for all organisms. From this, one can logically assume all of the following EXCEPT: A) DNA was the first genetic material. B) All organisms have a common ancestor. C) A gene from an organism could theoretically be expressed by any other organism. D) Related organisms have many similar genes. E) All organisms must either manufacture nucleotides or obtain them from their environment.

Answers

Answer: DNA was the first genetic material.

Explanation:

The genetic code is essentially the same in all the organism. This states that the similar organism can have similar genes in them that codes for the similar proteins hence, called as similar organism.

The genetic material is chemically made of nucleotide which is either being synthesized in the body or being obtained from the environment similar to that of amino acids.

If the genetic code is same one organism descend from the other organism.But these statement does not supports that DNA was the first genetic material to found in living beings.

Final answer:

Although the genetic code is nearly universal across all organisms hinting at a common ancestry, such a fact cannot logically validate the claim that DNA was the first genetic material. The origins of life's first genetic material remain a subject of scientific debate, and this cannot be inferred from the universality of today's genetic code.

Explanation:

The genetic code is nearly universal, shared among all organisms to some degree. This homologous characteristic implies shared common ancestry and suggests that virtually all organisms use the same genetic code for protein synthesis, which allows for genes of one organism to theoretically be expressed by another organism. Traits and functions of specific DNA and RNA dictate many of the characteristics that different organisms possess, with minor variations occurring in the genetic systems of different domains of life.

However, statement (A), 'DNA was the first genetic material,' cannot be logically inferred from the fact of a universal genetic code. While DNA plays a crucial role in all known forms of life, it is still a matter of scientific debate to determine whether DNA, RNA, or some other form of genetic material first carried genetic information in early life forms, and this cannot be concluded simply from the universality of today's genetic code.

Learn more about Genetic Code here:

https://brainly.com/question/17306054

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One mechanism by which viruses may cause cancer is to interrupt the genetic regulatory sequences of repressor proteins. Which of the following types of viruses is most likely to be involved in causing cancer by this mechanism?A) +ssRNA virusesB) dsRNA virusesC) -ssRNA virusesD) retrovirusesE) +ssRNA and -ssRNA viruses

Answers

Answer: D) retroviruses

Explanation:

Retroviruses are a type of virus that converts its genetic material into DNA using a special enzyme, called reverse transcriptase. The DNA is then able to integrate into the DNA of the host cell. Once integrated, the virus can make additional viral particles using the components of the host cell.

Retroviruses which cause cancer at low incidence do not contain host information inserted. Rather, they tend to cause cancer via the expression mutation of potentially oncogenic host genes. Retroviruses incorporate proviral DNA into their host's chromosomal DNA during their natural life-cycle. Provirus DNA promoter affect regulatory gene expression over.

Hence, the correct option is D.

Turbulent flow in humans is a major risk factor for atherosclerosis, the buildup of plaque on arterial endothelium.
Ignoring any potential effects of turbulence, what effect would atherosclerosis have on blood flow?

A) Narrowing of the artery causes the velocity to increase and the hydrostatic pressure to decrease.
B) Narrowing of the artery causes the velocity to increase and the osmotic pressure to decrease.
C) Narrowing of the artery causes the velocity to decrease and the hydrostatic pressure to decrease.
D) Expansion of the artery causes the velocity to decrease and the hydrostatic pressure to increase.

Answers

Answer: (A) Narrowing of the artery causes the velocity to increase and the hydrostatic pressure to decrease.

Explanation:

Atherosclerosis is a disease which allows plaque to build up inside the arteries of a person. Arteries are responsible to carry oxygen-rich blood to heart and other areas of the body.  

Plaque consists of cholesterol, calcium, fat, and other substances which are present in the blood. Through time, the plaque hardens the arteries and narrows them. That restricts the oxygen-rich blood flow to your organs and to other parts of your body.  

Atherosclerosis can cause serious problems, including stroke and heart attack.

Hence the correct option is  (A).

Like other osmoregulatory animals that live in marine environments, sharks maintain tissue concentrations of sodium, potassium, and chloride that are hypoosmotic to the seawater. In contrast to the bony marine fishes, however, sharks do not need to drink seawater. Why

Answers

Answer:

Shark is hyperosmotic relative to sea water.

Explanation:

The sharks that live in the marine environment do not need to drink sea water unlike others.

This is because the concentration of the urea and oxide is trimethyl amine gets deposited in the tissues of the shark which is hyper osmotic condition to the outside environment( sea water).

There is an adequate amount of potassium, sodium and chloride in the body of shark.

This is how the shark maintains the osmoregulatory mechanism in marine environment.

Many functions in the body are controlled by
special compounds. Which statements about
these compounds do you think are true? Check all
that apply.
The body can make all of the compounds it
needs.
The body gets energy from some compounds.
Some compounds determine physical
characteristics.
DONE

Answers

Answer:

B. The body gets energy from some compounds.

C. Some compounds determine physical characteristics.

Explanation:

i just did it

Other Questions
When your manager increases your job content by giving you more responsibility for planning and evaluating duties, which job design approach is being used? Job enrichment Job rotation Process reengineering Job simplification Job enlargement What is the value of StartFraction 1 Over 6 Superscript 0 EndFraction? One-sixth 0 1 undefined The cycling of carbon between the living and non-living parts of the Earth system is an important result of which of the following processes?A: Plants and animals exchanging gases with the atmosphereB: Condensation of water vapor leading to cloud formationC: Herbivores digesting plant materials to get nutrients D: Methane entering the atmosphere from volcanic activity A baseball team won 20 games and lost 10 games. What percent of the games did the team win?33One-third%50%66Two-thirds%200% What is predation??? The pattern in which a population is spaced within an area is called *5 pointsGrowth patternspecific variationdispersionpopulation density Sc. 5, Lines 106110: Read Hamlets oath very carefully and notice how faithfully and thoroughly he vows to seek the revenge the Ghost wants. Identify one thing Hamlet says that runs counter to what the Ghost asked of him. What does this statement reveal about Hamlet? JAVAIn this exercise, you are given a word or phrase and you need to return that word or phrase with the word like in front of it.If the phrase already starts with like, you should not add another one, just return the phrase as is.Example:like("totally awesome") --> "like totally awesome"like("like cool dude") --> "like cool dude"like("I like you") -->"like I like you" Escoge la respuesta correcta.Los mayas de Tikal ______ seis grandes pirmides de piedra.A. hacianB. hacenC. hicieranD. hicieronPlease help! thank you!! A block of mass = 4.00 kg is supported by a spring scale with unit of measure of Newtons. This spring scale is attached to top of an elevator. The elevator accelerates upward with a = 3.00 m/sec2. What is the reading on the spring scale to 3 significant figures? Princess Penelope was head over heels for Prince Patrick is that a simile a metaphor a hyperbole personification a onomatopoeia or an idiom Which natural resource was most abundant in ancient Egypt? Carly works at a local bakery. She needs 8 cups of flour to make a cake and 4 cups of flour to make 16 cupcakes. It she started theday with 18 pounds of flour, and one pound of flour equals four cups of flour, how much flour will Carly have left after she makes 4cakes and 32 cupcakes?OA. 65 cupsOB. 64 cupsOC. 32 cupsOD. 24 cups Toward the end of the fiscal year, the owner of a small company came back from lunch concerned because he had learned that a business targeting his same customer base was planning on spending $150,000 on promotion. As soon as he arrived at the office, he called his financial manager and said, "I want to budget $150,000 for next year's promotion." Which method of promotional budgeting did the owner want to use what form of technology does the author mainly praise in ""Teens and Technology Share a Future"" She spends her daysslicing jamn y queso and wrapping it in waxpapertied with string: plain ham and cheesethat would cost less at the A&P, but it would notsatisfythe hunger of the fragile old man lost in the foldsof his winter coat, who brings her lists of itemsthat he reads to her like poetry, or the others,whose needs she must divine, conjuring upproductsfrom places that now exist only in their heartsclosed ports she must trade with.The Latin Deli: An Ars Poetica,Judith Ortiz CoferDuring which phrases would a performer most likely pause while reciting? Check all that apply.A. she spends her days / slicing jamn y quesoB. tied with string: plain ham and cheeseC. the hunger of the fragile old man lost in the foldsD. or the others, / whose needs she must divineE. in their hearts / closed ports she must trade with What does the sequence of DNA determine? When the community worker reaches out to members of the community to let them know that their ideas, opinions, and feelings are valid and encourages them to express their concerns and feelings on their work plans, that worker is assuming the What is the maximum value of the function shown on the graph?A)1B)2C)0D)1 Traders often buy foreign currency in hope of making money when the currency's value changes. For example, on a particular day, one U.S. dollar could purchase 0.8869 Euros, and one Euro could purchase 143.1126 yen. Let fix) represent the number of Euros you can buy with x dollars, and let g(x) represent the number of yen you can buy with x Euros. (a) Find a function that relates dollars to Euros fx)Simplify your answer.) (b) Find a function that relates Euros to yen. gxSimplify your answer.) (c) Use the results of parts (a) and (b) to find a function that relates dollars to yen. That is, find (g o f)(x)-g(fx g(f(x)) Simplify your answer. Use integers or decimals for any numbers in the expression. Round to four decimal places as needed.) (d) What is g(1000))? g(f(1000)) Type an integer or decimal rounded to one decimal place as needed.)