There are three subatomic particles found inside atoms. Two of the subatomic particle have a charge of positive or negative. The one particle that does NOT have a charge is the:
Question 2 options:

proton

neutron

electron

none of the above

Answer:

Muscle tissue is categorized into three different types: skeletal, cardiac, and smooth. Each type of muscle tissue in the human body has a unique structure and a specific function. Skeletal muscle moves bones and other structures. The heart muscle contracts the heart to pump blood.

Answer:

He used a new experimental method to test his hypothesis.

Explanation:

Dmitri Ivanovski, a Russian microbiologist who was born in the year 1864 and died in 1920. He was the scientist who initiated the discovery of viruses as a pathogenic microorganism. He worked to discover the cause of mosaic disease in tobacco plant and he hypothesized that that something smaller than bacteria or fungi, as early believed, was responsible for the transmission of the disease.

In order to test his hypothesis, he passed a solution containing the causative agent of the disease, which he prepared from the infected plant leaves, through a filter known as Chamberland filter. He was able to discover that the filtrate still contained microbial pathogens that can infect more tobacco plants, confirming his hypothesis that something smaller than fungi or bacteria is responsible for the tobacco mosaic infection.

Hence, to test out his hypothesis, Ivanovski in the 1890's used a new experimental method i.e. CHAMBERLAND FILTER method.

Answer:

False

Explanation:

Mitosis takes place during M phase of the cell cycle, which is longer than interphase. False. Although mitosis takes place in M phase, M phase is shorter than interphase; cells spend most of their time in interphase.

Answer:

22.5

Explanation:

multply the 12 x 2 and then choose the close to the number what you have on you cost.

Explanation:

In all living system we can always find basic elements carbon, oxygen, nitrogen and hydrogen, carbon is the basic building unit contained in living matter. The percentage of carbon in the mass of living matter is 19.0% oxygen and hydrogen are present in almost all organic compound which creates living organisms.

Answer:

(1) Tobacco mosaic virus, (2) Tomato spotted wilt virus, (3) Tomato yellow leaf curl virus, (4) Cucumber mosaic virus, (5) Potato virus Y, (6) Cauliflower mosaic virus, (7) African cassava mosaic virus, (8) Plum pox virus, (9) Brome mosaic virus

Paramecia that live in freshwater have contractile vacuoles, while those that live in saltwater do not, because osmosis operates differently in the two solutions.The water potential of the surrounding environment affects the cells of paramecia, which in turn determines whether they have contractile vacuoles or not.

Paramecia are eukaryotic unicellular organisms that are often found in freshwater. They possess contractile vacuoles that aid in the regulation of water content within the cell. These organelles, which are absent in the paramecia that live in saltwater, remove excess water from the cytoplasm by collecting it in a central vacuole. When the vacuole is full, it contracts and expels the water out of the cell through an opening known as the cytoproct. Freshwater is hypotonic to paramecia, which means that the concentration of solutes inside the cell is higher than the concentration of solutes outside the cell. This causes water to move into the cell, which could lead to it bursting if not for the contractile vacuoles. In contrast, saltwater is hypertonic, which means that the concentration of solutes outside the cell is higher than the concentration of solutes inside the cell.

As a result, water moves out of the cell, and the contractile vacuoles are not necessary. The paramecia in saltwater do not need to worry about osmotic lysis, making the contractile vacuole unnecessary.

In conclusion, paramecia that live in freshwater (hypotonic solution) have contractile vacuoles, while those that live in saltwater (hypertonic solutions) do not, because osmosis operates differently in the two solutions.

learn more about Paramecia here

https://brainly.com/question/2784341

#SPJ11

Answer:

A. Cytokinesis

Explanation:

Can I get Brainllest I need it please?

Plants living in regions with limited water availability have evolved various adaptations to cope with the challenging conditions.

Four common adaptations seen in such plants:

1)Succulence: Many plants in arid regions have evolved succulent structures to store water.

These plants typically have fleshy leaves, stems, or roots that can store significant amounts of water during periods of rainfall.

The stored water can then be utilized during times of drought, allowing the plant to survive extended periods without rainfall.

2)Reduced leaves or spines: To minimize water loss through transpiration, plants in arid environments often have reduced leaves or modified leaf structures.

For example, some plants have small, needle-like leaves or spines that help reduce the surface area exposed to the hot and dry air, thereby reducing water loss.

3)Deep root systems: Plants adapted to arid conditions often possess deep root systems that enable them to access water from deeper soil layers.

These extensive root systems can tap into groundwater sources or reach areas with higher moisture content, allowing the plant to survive when surface water is scarce.

4)CAM photosynthesis: Crassulacean acid metabolism (CAM) is a specialized form of photosynthesis that many arid-adapted plants employ.

CAM plants open their stomata and take in carbon dioxide during the night when temperatures are cooler and water loss through transpiration is reduced.

They store the carbon dioxide as an organic acid and utilize it during the day for photosynthesis when the stomata remain closed to conserve water.

These adaptations enable plants to conserve and efficiently utilize water, enhancing their chances of survival in regions with low water supplies.

For more questions on Plants

https://brainly.com/question/19393475

#SPJ8

You need to probably cross tundra and taiga.

The definition of a biome is "the world's principal communities, categorized according to the prevalent flora and distinguished by organism adaptations to that particular environment" (Campbell 1996).

It is impossible to overstate the significance of biomes. Over the course of life on Earth, biomes have evolved and shifted quite a bit. Human activities have significantly changed these communities more recently.

Particularly in Latin America, clearcutting for industrial use or cattle ranching, slash-and-burn farming, and other human activities have resulted in the destruction of tropical forests.

These events are a result of our rising demand for meat products. This damage has been happening quickly for years. Tropical forests that once covered much of the planet are already extinct.

Therefore, You need to probably cross tundra and taiga.

To learn more about biomes, refer to the link:

https://brainly.com/question/11491362

#SPJ2

The respiratory portion of the respiratory tract includes the nose, mouth, pharynx, larynx, trachea, and bronchi.

Starting at the nose, air enters the body and passes through the nasal cavities. This air is then warmed, humidified, and filtered as it passes through the nasal passages. From the nose, air enters the mouth, which provides an alternate route for air to enter the body.

The air then passes through the pharynx, which is a short tube that serves as a passageway for both food and air. After the pharynx, the air moves into the larynx, which is a short, hollow tube located at the top of the trachea. The larynx serves to protect the trachea from foreign objects and contains the vocal cords, which are responsible for vocalization.

The trachea is a long, thin tube that extends from the larynx to the bronchi. The bronchi are two tubes that branch off the trachea and enter the lungs. The bronchi branch into smaller tubes called bronchioles, which further divide into tiny air sacs known as alveoli.

know more about respiratory tract here

https://brainly.com/question/28990432#

#SPJ11

Answer:

The cheapest way for the country to make electricity would be

A) Use the agriculture biomass to generate a renewable fuel that can be burned to generate electricity

The statement provides the best reasoning for regulating the amount of fish removed from the river by humans is:

A) Regulation will help the ecosystem to remain balanced and contribute to the stabilization of other populations of river organisms.

Explanation:

For the electricity, the use of Biomass meets the demands due to the fact that, it has minimal impact on the environment, does not add carbon dioxide to the atmosphere. Also, it is renewable form of energy.

For the regulation of the amount of fish removed from the river helps to maintain the ecosystem balance. If it was not done, the fishes found in the river will be totally harvested thereby disrupting the chains in that river ecosystem.

The release of gastrin is usually regulated by two hormones, cholecystokinin (CCK) and secretin, which are both produced in response to food entering the small intestine. The release of gastrin is then inhibited.

Gastrin is a peptide hormone produced in the gastrointestinal tract by G cells. The release of this hormone is stimulated by a variety of stimuli, including the presence of peptides, amino acids, and stomach distension. The primary function of gastrin is to increase the secretion of gastric acid in the stomach, which aids in the digestion of food. Regulation of Gastrin and Gastrin secretion is controlled by a negative feedback mechanism that regulates the secretion of acid. When gastric acid is produced, it stimulates the secretion of somatostatin, which, in turn, inhibits gastrin release. This is accomplished by inhibiting G cell activity, which leads to reduced gastrin secretion.

A decrease in pH, however, activates the secretion of gastrin by the G cells. As a result, it increases the production of acid in the stomach. In the antrum, an increase in pH slows the secretion of gastrin. This feedback mechanism regulates the pH and acid secretion of the stomach. When the pH is too low, gastrin is secreted, and acid is produced. When the pH is too high, gastrin is not secreted, and acid secretion decreases.ConclusionIn summary, the release of gastrin is usually regulated by negative feedback mechanisms that inhibit G cell activity and reduce gastrin secretion. Gastrin secretion is stimulated by an increase in pH, which activates the G cells to release the hormone.

However, in Mr. Akin's case, this regulation does not work due to a rare condition known as gastrinoma, which is a tumor that secretes gastrin uncontrollably, resulting in hypergastrinemia. This leads to increased gastric acid production and can cause peptic ulcers.

For more such questions on gastrin , Visit:

https://brainly.com/question/10502037

#SPJ11

Answer:

0.495

Explanation:

because i did the question

An eponym becomes a neologism when the original meaning or usage of the eponym changes and a new meaning is established in common usage.

An eponym is a word that is derived from a person's name, such as "sandwich" which was named after the Earl of Sandwich. In this case, the word "sandwich" has the same meaning as it did when it was first named after the Earl.

However, when the original meaning or usage of the eponym changes and a new meaning is established in common usage, it becomes a neologism.

A neologism is a new word, expression, or usage that has been recently created or has become popular. An example of an eponym turning into a neologism is "hero" which was originally used to describe a classical Greek or Roman demigod or divine hero, but has since taken on a new meaning to describe a person who is admired for their courage and noble qualities.

To know more about eponym here:

https://brainly.com/question/5824829#

#SPJ11

Due to the action of tears, potential pathogens of the eyes and its membranes usually end up the stomach. Hence option c is correct.

The potential pathogens are defined as the pathogen includes characteristics including mortality, communicability, and the length of time it takes for a disease to develop following infection with a specific inoculum, and is related to the percentage of people that develop symptoms after infection.

Through a network of ducts and canals, tears and the germs they gather travel into the nose where they combine with nasal mucus before entering the throat where they are ingested.

Thus, due to the action of tears, potential pathogens of the eyes and its membranes usually end up the stomach. Hence option c is correct.

To learn more about potential pathogens, refer to the link below:

https://brainly.com/question/22538080

#SPJ1

Answer:

People, not machines, perform fingerprinting. They do search for a particular amount of matches before taking into account a whole match.

Explanation:

\({ \red{ \sf{C.}}}\)

I thinks so that the answer is Blood blow backwards.

Answer:

D

Explanation:

If a nondisjunction of chromosome 21 occurs during meiosis I, one of the resulting gametes will have an extra copy of chromosome 21, while the other gamete will be missing a copy of chromosome 21. Therefore, the model should display two copies of chromosome 21 in one of the gametes and no copies of chromosome 21 in the other.

Chromosomes divide through a process called cell division, which consists of two main stages: mitosis and meiosis. The process of chromosome division is tightly regulated and ensures that each daughter cell receives a complete and accurate set of chromosomes.

Meiosis is the process by which reproductive cells (gametes) are produced, and it involves two rounds of cell division (meiosis I and meiosis II). During meiosis I, the homologous chromosomes pair up and exchange genetic material through a process called crossing over.

To learn more about chromosomes, visit here:

https://brainly.com/question/1596925

#SPJ4

Salt kills some types of bacteria, mainly by sucking water out of them and this process called as osmosis. Osmosis is refer to as a water passes out of a bacterium so as to balance salt concentrations on each side of its cell membrane. At that time bacteria inside act as hypotonic medium.

A solution will be hypertonic to a cell if its solute concentration is higher than that inside the cell, and the solutes cannot cross the membrane.

Without water, bacterial also proteins such as enzymes cannot function and generally the cell collapses in on itself.

For more information regarding osmosis, visit:

https://brainly.com/question/2625460

#SPJ2

The boundaries of the central passage at the root of the neck connecting the neck/thorax (thoracic inlet) includes all of the following except the carotid arteries.

The thoracic inlet, also known as the thoracic outlet, is the area between the neck and thorax that contains numerous critical anatomic structures, including nerves, vessels, and musculature. The thoracic inlet is a vital anatomical feature that is responsible for connecting the head and neck to the trunk of the body. The thoracic inlet is bordered by a number of structures, including the rib, manubrium, and clavicl. Rib is located in the thoracic inlet, this can be seen at the level of the T1 vertebra. The manubrium, which is a component of the sternum, is also found in the thoracic inlet.

The clavicle is situated in the thoracic inlet.Fourth, the trachea, esophagus, and major blood vessels are also present in the thoracic inlet. The central passage at the root of the neck connecting the neck/thorax (thoracic inlet) includes the following boundaries: Superiorly, the thoracic inlet is bounded by the plane of the thoracic inlet. Laterally, the thoracic inlet is bounded by the medial border of the first rib. Anteriorly, the thoracic inlet is bounded by the sternum and its costal cartilages. Posteriorly, the thoracic inlet is bounded by the vertebral column and the intervertebral discs.

Learn more about carotid arteries at:

https://brainly.com/question/30640966

#SPJ11

Answer:

Radon is a naturally occurring radioactive gas that can accumulate in homes and other buildings. It can enter the home through cracks and openings in the foundation and walls, as well as through gaps around pipes and wiring. Radon gas is odorless and colorless, making it difficult to detect without testing. In homes, the highest levels of radon are typically found in the basement or lowest levels of the home. The best way to prevent radon accumulation is to seal any cracks or openings in the foundation, walls, and around pipes or wiring. Additionally, homeowners should install a radon mitigation system if radon levels are found to be high.

Answer:

The spoon becomes much hotter, the coffee grows cold, and the cream remains about the same temperature.

Explanation:

Answer:

Explanation:

no for this one but i couldn't  add this to theother one . Seven more than twice a number is greater than negative eleven.

Answer: Without other information, the number of animals maybe between 19-73 depending on age and pancreas size. Of the options presented, the nearest answer is D.32

Explanation: Assumptions

2yo cow with pancreas 400g

insulin content ~5 IU (175ug)

Daily insulin requirement 0.5-1 IU —> 187-365 IU p.a.

beef animals required 37-73 cows

using 6 mo calves, the insulin content is ~10IU, so requiring 19-37 calves

Answer:

i think its b

Explanation:

What results from adaptive evolution?

Adaptive evolution pertains to evolutionary changes in an organism that make it suitable to its habitat. The changes result in an increased chance of survival and reproduction. The changes enable the particular organism to fit to an environment.

Speciation on islands is influenced by adaptive evolution. Thus, option B is correct.

Adaptive evolution pertains to evolutionary changes in an organism that make it suitable to its habitat. The changes result in an increased chance of survival and reproduction. The changes enable the particular organism to fit to an environment.

One species could split into two if a physical barrier (such as a new river, divided its geographic range). If the barrier is large enough, gene flow between them would cease and the two separate populations would evolve independently. Different alleles would be fixed in them; because of the hazards of mutation and drift, or because selection favored different characters in the two.

Then if the barrier is removed and the populations are reunited, they might remain distinct from each other. There would now be two species where there was formerly one.

Therefore, Speciation on islands is influenced by adaptive evolution. Thus, option B is correct.

Learn more about Speciation on:

https://brainly.com/question/9589072

#SPJ2

Slow waves are cycles of depolarization and repolarization that lead to cycles of smooth muscle contraction and relaxation in the gastrointestinal tract. The right option is A and B.

These slow waves are important for initiating and coordinating contractions of smooth muscle cells, which leads to peristalsis, a coordinated movement of the gut that helps in propelling food along the gastrointestinal tract.

The frequency and strength of slow waves are modulated by neural and hormonal inputs.

Slow waves are not the same as muscle contractions, which are the actual movements of the smooth muscles.

Slow waves set the frequency and strength of muscle contractions, but muscle contractions can occur without slow waves under certain conditions.

Slow waves are not reflexes that originate and are integrated in the enteric nervous system, although the enteric nervous system can modulate the frequency and strength of slow waves.

Slow waves are intrinsic to the smooth muscle cells themselves and are generated by pacemaker cells called interstitial cells of Cajal. The correct options are A and B.

For more such answers on slow waves

https://brainly.com/question/12200950

#SPJ11

Fish will eat tadpoles if they can get to them. The only way to stop them would be to give the tadpoles a space that the fish can't get to, like a shallow area with a barrier (plastic mesh would work but make sure the fish can't get caught in it) or lots of plants, or make a separate wildlife pond.

If tadpoles are in an area where there is a lot of plants in the water it would be much harder for fish to get to them.