Why does the presence of predators help keep an ecosystem stable?
A. The predators eat the keystone species.
B. The predators keep prey populations balanced.
C. The predators decrease biodiversity
D. The predators stop species from competing,

The correct option is D : piwi-interacting RNAs . Animal gametogenesis and fertility are greatly influenced by PIWI-interacting RNAs (piRNAs), which also suppress transposons, fight viruses, and regulate endogenous genes1.

Animals' PIWI-interacting RNAs (piRNAs), which range in length from 21 to 35 nucleotides, suppress transposable elements, control gene expression, and thwart viral infection. PiRNAs direct the PIWI proteins to cleave the target RNA, encourage the construction of heterochromatin, and methylate DNA. The piRNA pathway's architecture enables it to control conserved host genes in addition to providing adaptive, sequence-based immunity to transposons and viruses that are continually developing. While somatic piRNA activities have been lost, gained, and lost again during evolution, piRNAs silence transposons in the germ lines of the majority of mammals.

Learn more about to noncoding rna visit here:

https://brainly.com/question/15943629

#SPJ4

Full Question ;

A particular small noncoding RNA that is linked to spermatogenesis is most likely classified as what kind of

noncoding RNA?

A) short interfering RNAs

B) bidirectional lncRNAs

C) microRNAs

D) piwi-interacting RNAs

The type of cells that display protein fragments produced by the cancer within them are dendritic cells.

Dendritic cells are known to be antigen-presenting cells that are responsible for presenting antigens to the immune system. When cancer cells produce protein fragments, dendritic cells capture these fragments and present them to T-cells, which then initiate an immune response against the cancer cells.

Therefore, among the options given, dendritic cells are the only type of cells that display protein fragments produced by the cancer within them.

To know more about dendritic cells, visit:

https://brainly.com/question/13022334

#SPJ11

Answer:

1. Food cycle- With Global Warming on the rise the food cycle is being thrown off due to some animals dying off because they aren't getting used to the extreme sudden heat this can also affect humans especially if we seafood. Global warming affects the ocean too killing off a lot of sea creatures that we eat sometimes like Shrimp for example. Study shows that Global Warming is heating up the ocean cooking the live shrimp in the ocean.

2. Timing of seasonal changes- Study shows that places that don't get hit by snowy weather in the Wintertime are getting pounded by winter storms. A perfect example of this is East Coast getting hit by wintery weather while West Coast sees some high temperatures with no moisture this is caused by global warming.

3. Extinction Risks- Another study shows that some animals such as elephants, Siberian Tigers, red Pandas are all on the Endangered species list due to the sudden change in the weather because of Global Warming which brings the extinction-level to an almost high rate. People all around the world are trying all they can to prevent animal species to go extinct and as I mentioned before if a species goes extinct it'll throw off the food cycle.    

4. Range shifts- Since the temperatures are changing dramatically because of global warming it is causing a lot of species to migrate to a new area this is their way of surviving instead of dying off this can also disrupt the food cycle because if a certain species a predator perhaps moves to a different area the prey species will increase and those predators that migrated to a new area is causing a lot of habitat changes to another species its like natural selection and can cause a pretty bad change

So that is why people are up and arms about global warming and why they want to hurry up and come up with a plan to stop global warming or figure out a way to cool down the Earth because it'll not only end in species' extinction but it can lead to Human extinction.

Hope this helped :)

Answer:

1. Mitochondria - you can tell based on the double membrane and the folding of the cristae shown in yellow

2. Centrosome- the centrosome is made up of two cylindrical centrioles.

3. Lysosome - lysosomes are round vesicles (think like bubbles) that digest waste products

4. Cytoplasm - the fluid-filled space inside the cell is the cytoplasm

5. Nucleosome - the "nucleus inside the nucleus" is called the nucleosome. It is where ribosomal RNA is made. It is not surrounded by a membrane

6. Nucleus - the large sphere-shaped organelle that holds the genetic material

7. DNA - the genetic material found inside the nucleus

8. Cilia - hair-like structures that help in locomotion

9. Rough endoplasmic reticulum - a series of folded membranes with ribosomes attached to the surface used in protein synthesis

10. Smooth endoplasmic reticulum - a series of folded membranes without ribosomes, giving a smooth appearance. Also used in protein synthesis, folding and modification.

11.  Cytoskeleton - a series of filaments that helps the cell control its internal structure

12. Vesicles - vesicles containing proteins and other organic molecules budding off the endoplasmic reticulum

13. Ribosomes - small round structures that represent cellular protein synthesis machines. Can be free floating or attached to the ER

14. Golgi apparatus - A series of flattened pouches that sorts, packages and transports proteins from the ER

15. Cell membrane - defines the boundary of the cell and controls the entry and exit of different substances

Answer:

sodium ions diffuse through leakage channels into the cell, but potassium ions diffuse through leakage channels out of the cell

Explanation:

Answer:

Explanation:

Answer:,,

Explanation:

Answer:

3 long and 1 short

Explanation:

3 of the squares have the dominant allele for long needles (L) therefore all 3 would all have long needles because in order for a cactus plant to have short needles it would have to have only the short allele (l) like the one on the bottom right corner

Yes, small changes in just one part of the climate system can have a global impact. For example, the melting of Arctic sea ice has the potential to impact global weather patterns and ocean currents, as well as to release methane gas from the seafloor, which is a potent greenhouse gas.

One example of a small change in a regional climate system that could have a global impact is the melting of glaciers in the Himalayas. According to a news article from the BBC, glaciers in the region are melting at an unprecedented rate due to rising temperatures. This is having a number of impacts, including changes in water availability and increased flooding risk in nearby regions.

However, the melting of glaciers in the Himalayas is also causing sea levels to rise around the world, as the meltwater flows into the oceans. This can have significant impacts on low-lying coastal regions, including increased risk of flooding and erosion, as well as impacts on ecosystems and human communities.

Overall, small changes in regional climate systems can have far-reaching impacts on the global climate, highlighting the importance of addressing climate change at both the local and global levels.

Learn more about glaciers visit : brainly.com/question/19709729

#SPJ11

The question of whether electricity should cost more money to encourage reduced consumption is a matter of debate and depends on various factors and perspectives.

Here are some key points to consider:

Environmental Impact: Higher electricity prices can incentivize individuals and businesses to be more mindful of their energy consumption and adopt energy-efficient practices.

Affordability and Equity: It is important to consider the potential impact of increased electricity costs on individuals or communities with lower incomes.

Energy Transition: Higher electricity costs could serve as an economic signal to encourage investment in renewable energy sources and energy-efficient technologies.

Behavioral Changes: Higher electricity costs can influence consumer behavior and encourage energy-saving practices. People may become more conscious of their energy use, adopt energy-efficient technologies, and implement energy-saving habits.

System Efficiency: Higher electricity costs can lead to a more efficient use of electricity resources, as individuals and businesses may invest in energy management systems, prioritize energy conservation measures, and optimize their energy usage.

for similar questions on electricity.

https://brainly.com/question/29789063

#SPJ8

Answer:

75 acids

Explanation:

yea thats it hehe

The correct answer is C. During exercise, there is an increase in the metabolic activity of skeletal muscles, which requires more oxygen and nutrients. To meet this demand, the body increases cardiac output, which is the amount of blood pumped by the heart per unit time.

This results in an increase in blood pressure, but the increase in arterial pressure is relatively small due to vasodilation, which is the widening of the blood vessels. Vasodilation allows more blood to flow through the blood vessels, reducing the resistance to blood flow and decreasing the pressure.

Additionally, the sympathetic nervous system also causes the veins to constrict, which helps to maintain blood pressure. Therefore, vasodilation plays an important role in regulating blood pressure during exercise.

To know more about vasodilation refer here:

https://brainly.com/question/29709068

#SPJ11

Answer:

General senses

Somesthetic senses

Somatosensory senses

Explanation:

A general sense is one that is distributed throughout the body and has receptor cells within Each of the senses is referred to as a sensory modality.

i hoped this helped you

Carbohydrates are one of the four types of biological macromolecules, and one of their representative polymers is glycogen. Glycogen is a large, branched polymer made up of glucose monomers linked together by α1-4 glycosidic bonds and α1-6 glycosidic bonds.

Glycogen is primarily found in animal cells and serves as a storage molecule for glucose, providing a readily available source of energy for the cell. The branching structure of glycogen allows for quick and efficient access to glucose when it is needed by the cell.

Lipids are another type of macromolecule, and one representative polymer is triglycerides. Triglycerides are made up of three fatty acid molecules linked to a glycerol molecule by ester bonds. The fatty acid molecules vary in length and degree of saturation, giving triglycerides a wide range of physical properties. Triglycerides serve as a storage molecule for energy and are found in adipose tissue. They also serve as a structural component of cell membranes and play a role in cell signaling.

Proteins are a third type of macromolecule, and one representative polymer is hemoglobin. Hemoglobin is a complex protein made up of four subunits, each of which contains a heme group. Hemoglobin is responsible for transporting oxygen from the lungs to the tissues and carbon dioxide from the tissues to the lungs. The subunits of hemoglobin are linked together by various types of chemical bonds, including hydrogen bonds, disulfide bonds, and hydrophobic interactions.

Nucleic acids are the final type of macromolecule, and one representative polymer is DNA. DNA is made up of nucleotides, which consist of a nitrogenous base, a sugar molecule, and a phosphate group. The nitrogenous bases are adenine, thymine, guanine, and cytosine, and they are linked together by hydrogen bonds to form the rungs of the DNA ladder. The sugar molecules and phosphate groups make up the sides of the ladder, linked together by phosphodiester bonds. DNA serves as the genetic material of the cell, carrying the instructions for the synthesis of proteins and other molecules necessary for cell function.

Overall, the monomer subunits and manner of linkage of each representative polymer are characteristic of the class of macromolecules to which it belongs. Carbohydrates are made up of monosaccharides linked by glycosidic bonds, lipids are made up of fatty acids linked to a glycerol molecule by ester bonds, proteins are made up of amino acids linked by peptide bonds, and nucleic acids are made up of nucleotides linked by phosphodiester bonds. These characteristics allow each class of macromolecules to perform their unique functions within the cell.

To know more about Carbohydrates click here:

https://brainly.com/question/14614055

#SPJ11

Answer:

True

Explanation:

Satellites primarily collect data regarding various properties of the Earth's surface, atmosphere, and oceans. This data includes information about temperature, weather patterns, land cover, vegetation, water quality, and many other environmental factors.

Remote sensing is the process of learning about objects, locations, or events from a distance, typically using aircraft or satellites. Using sensor technologies based on satellite or aeroplane, it comprises the detection and classification of objects on the surface of the Earth, in the atmosphere, and in the oceans.

As a result, data from satellite pictures is gathered using remote sensing techniques like optical imaging and synthetic-aperture radar. They gather data and transmit it to the earth.

Learn more about Satellites  here

https://brainly.com/question/29615656

#SPJ11

In Koppen climate classification:

- A stands for tropical, in this climate is where do you find monsoons (Am).

- B stands for arid.

- C stands for temperate.

- D stands for continental.

- E stands for polar.

Mutations that prevent collagen from assembling properly result in a group of rare genetic disorders known as the Collagen disorder.Collagen is a protein that provides structure and support to connective tissues in the body.

Mutations that prevent collagen from assembling properly can cause a group of rare genetic disorders known as the Collagen disorder.There are over 30 types of collagen disorders, each with their own distinct symptoms and characteristics. Some of the most common types of Collagen disorders include osteogenesis imperfecta (OI), Ehlers-Danlos syndrome (EDS), and Marfan syndrome.

Mutations that prevent collagen from assembling properly can cause a wide range of symptoms, depending on the type of Collagen disorder and the severity of the mutation. Some of the most common symptoms of Collagen disorders include weak and brittle bones, loose and hypermobile joints, and abnormal scarring and wound healing. Additionally, some forms of Collagen disorder can cause serious complications such as heart and lung problems.

learn more about Collagen

https://brainly.com/question/14387059

#SPJ11

Answer:

Use a connects app.

Explanation:

The structures involved in cerebrospinal fluid (CSF) circulation in order from the initial production of CSF to when the CSF is absorbed into venous circulation are choroid plexus - ventricles - arachnoid villi - subarachnoid space - median and lateral apertures - dural sinuses.

Cerebrospinal fluid (CSF) is a transparent, colorless liquid that surrounds the brain and spinal cord. Its function is to supply nutrients and remove metabolic waste products from the central nervous system (CNS).

The initial production of CSF occurs in the brain's ventricles, specifically in the choroid plexus. Then, the CSF flows through the ventricles before entering the subarachnoid space.

The absorption of CSF into venous circulation takes place via arachnoid villi, followed by its drainage into the dural sinuses, and finally returned to the circulatory system.

Hence, the proper sequence of structures involved in CSF circulation is as follows: choroid plexus - ventricles - subarachnoid space - arachnoid villi - dural sinuses - median and lateral apertures.

Overall, CSF plays a critical role in maintaining the proper functioning of the CNS.

Learn more about cerebrospinal fluid.

https://brainly.com/question/30666353

#SPJ11

The conclusion that cell-to-cell communication between P2 and EMS is necessary for gut specification during the four-cell stage is supported by Experiment 3.

The conclusion that cell-to-cell communication between P2 and EMS is necessary for gut specification during the four-cell stage is supported by Experiment 3. As demonstrated the main case in which stomach separation came about, paying little mind to how long the cells were left in the four-cell stage, was the blend of EMS and P2 cells. In the four-cell stage, gut differentiation was still observed in EMS and P2 cells that underwent zero minutes of incubation.

This supports the decision that there is a prerequisite for cell-to-cell correspondence among P2 and EMS for stomach determination to occur.

To learn more about EMS here

https://brainly.com/question/31939306

#SPJ4

The example of a reef fish community on the great barrier reef of Australia best fit the lottery model of species diversity because the most productive and diverse ecology in the ocean is found on coral reefs. They can only be found in tropical seas with the right salinity, temperature, and sedimentation. Reefs may occur as small fringing reefs lining a continental coast, as large offshore barrier reefs, or as a chain of atolls that support entire nations.

What type of diversity is Australia great barrier reef?

More than 410 types of hard coral, 1,620 species of fish, 2,000 species of sponges, 14 species of sea snakes, six of the seven marine turtle species in the world, at least 300 mollusc species, 630 species of echinoderm, and 500 species of marine algae are only a few examples of its diversity.

To know more about Great barrier reef visit

https://brainly.com/question/16767563

#SPJ4

Given the causes of inbreeding depression, and assuming that there are no new mutations, this extra expense is justifiable because inbreeding depression will occur in this population if relatives mate, causing more homozygous recessive production than if random mating of individuals

The cheetah is heading towards extinction They face this problem as if we as conservation biologists have to save the cheetah from extinction if they are introduced to a relative and they refuse to mate with them for the new generation to reduce inbreeding depression.

Yes, because inbreeding depression would occur in this population if relatives mated, causing the production of more homozygous recessive if random individuals mated as when this happens, the few individuals end up with inbreeding which reduces the size of the gene pool leads to the decrement of genetic variability and the harmful mutation which is very difficult to adapt these changes.

Inbreeding depression is a decrease in fitness with increased genome-wide homozygosity that occurs in offspring from related parents.

The question type multiple choice:

The answer is C

Learn more about inbreeding depression at https://brainly.com/question/13676032

#SPJ4

During the Cretaceous period, high temperatures and abundant vegetation resulted in increased \(CO_2\) levels, leading to the accumulation of organic matter and the formation of good source rocks for oil and gas.

During the Cretaceous period, spanning from approximately 145 to 66 million years ago, the global carbon-climate cycle played a crucial role in the development of favorable conditions for the formation of good source rocks. The period was characterized by high global temperatures and abundant vegetation, resulting in increased carbon dioxide \((CO_2)\) levels in the atmosphere.

The elevated \(CO_2\) levels fueled vigorous photosynthesis, leading to the accumulation of organic matter in marine and terrestrial ecosystems. As this organic matter was buried and subjected to heat and pressure over millions of years, it transformed into oil and gas, creating potential source rocks. The warm climate and prolific vegetation during the Cretaceous, along with the subsequent geological processes, contributed to the formation of the rich hydrocarbon reserves that are vital to our energy resources today.

To learn more about Cretaceous follow the link:

https://brainly.com/question/2093019

#SPJ4

The correct question is:

Explain the global carbon-climate cycle during the Cretaceous period. (Write only one paragraph describing what happened during the Cretaceous geological period in order to have good source rocks.)

A blockage in the internal iliac artery would impair blood flow to all of the options listed except for the pelvic wall. The internal iliac artery is responsible for supplying oxygenated blood to various structures in the pelvis including the pelvic organs such as the bladder, rectum, uterus, and prostate gland.

As well as the gluteal muscles, muscles of the lower limbs, and a small portion of the anterior abdominal wall, and the medial thigh. A blockage in the internal iliac artery would result in decreased blood flow to these structures, potentially causing tissue damage and dysfunction. However, the pelvic wall is primarily supplied by other arteries such as the obturator and inferior gluteal arteries, and therefore would not be affected by a blockage in the internal iliac artery. It is important to note that a blockage in any artery can have serious consequences, and medical attention should be sought promptly if symptoms of impaired blood flow are experienced.

To know more about prostate gland.

https://brainly.com/question/29392759

#SPJ11

Answer:

it means to use the data table to complete the graph that is all u have to do it is easy so jus read it over n over again that might help u.

Explanation:

Answer:

Explanation:I believe there are five main reasons for the declines experienced in several Midwestern states.

1 – Hemorrhagic Disease

We had a record hemorrhagic disease (HD) outbreak in 2007 and another in 2012. The Midwest lost tens of thousands of deer to HD and many states haven’t fully recovered from it.

2 – Severe Winter Weather

We experienced severe winter weather during the past few years. Severe winters in the Upper Midwest can increase adult mortality, reduce fawn survival, and impact antler growth the following year as bucks have to recover the additional weight lost during the severe winter. This leaves less nutrition for antler growth.

3 – Intentional Herd Reduction

Several states were intentionally reducing their deer herds over the past decade. Many states were aggressively harvesting antlerless deer, and when you reduce the herd the buck harvest declines. In the Midwest today, only one state wildlife agency (Indiana) says it is trying to reduce the deer herd, the others are either trying to stabilize or grow their herds.

4 – Falling Fawn Recruitment

Eight states in the Midwest measure fawn recruitment rates today. In my opinion, every state should be monitoring this important statistic. Back in 2005 only five of the eight states measured fawn survival, and it has dropped in all five from 2005 to 2014. You can blame it on predators, nutrition, climate change, or whatever you’d like, but the reality is far fewer fawns are surviving today than they did a decade ago. Approximately every other fawn born is a buck fawn, so fewer fawns means fewer bucks are recruited into the herd.

5 – Habitat Loss

The last reason is arguably the most important in this list, and it is habitat loss. From 2007 to 2014 the U.S. enrolled 9.1 million fewer acres into the USDA’s Conservation Reserve Program (CRP). The CRP is the most successful federal wildlife habitat program, and it pays landowners a fee to convert highly erodible cropland and environmentally sensitive acreage to wildlife habitat. It can include grasses, trees, windbreaks, shelterbelts, buffer strips and more. In most cases, CRP acres provide exceptional wildlife habitat, and this is especially true in the intensively row-cropped Midwest where cover was already the limiting habitat component.

Alveolar ducts are a division of the tiniest respiratory bronchioles, which are tiny air passages.

Some of the tiniest airways of your lungs are the bronchioles. Tiny channels from the bronchioles transport inhaled air into flexible air sacs (alveoli). The alveolar-capillary wall, which encircles the alveoli, often prevents liquid from the capillaries from infiltrating the air sacs.

The lungs are made up of branched airways that lead to alveoli that take part in gas exchange as well as respiratory bronchioles. The majority of bronchioles and big airways are a component of the lung's conducting zone, which transports gas to alveolar locations for gas exchange.

To know more about Respiratory bronchiole visit:

https://brainly.com/question/15425698

#SPJ4

Answer:

Energy is not recycled in ecosystems and each ecosystem requires a continuous input of energy to sustain it. There is some energy transformed at each level of the food chain or food web in an ecosystem. In an ecosystem, energy is frequently transformed from one form to another