When does the movement of materials in and out of the cell not require energy?

Answers

Answer 1
Answer : Passive transport mechanism Explanation: Passive and Active transport mechanisms are the two types of transport mechanisms by which molecules move in and out of the cell membranes. Passive Transport mechanisms do not require energy from cells. The movement of the molecules from High to Low concentration requires no energy. E.g. Osmosis, simple and facilitated diffusion.

Related Questions

All organisms contain DNA and RNA. What are the subunits of DNA and RNA? A carbohydrates B simple sugars C nucleotides D amino acids

Answers

The answer is C. Nucleotides

Answer:

The answer is: C nucleotides.

Explanation:

The letters are A, C, G, and T, which symbolize the four nucleotide subunits of a DNA-adenine, cytosine, guanine, thymine band, which are covalently linked bases to phosphoric chains.

The answer is: C nucleotides.

1 pts maps can be deliberately or unintentionally developed to present false information

Answers

It is true that maps can be deliberately or unintentionally made to mislead people. For instance, if a cartographer makes a mistake on a map and it is put into print, that would be misleading. That's an example of unintentional misleading. It can also be done intentionally.

which structure will you find in a prokaryotic cell a. nucleus b. Golgi body c. cell membrane d. mitochondrion

Answers

it is c. cell memebrane

Answer:

Cell membrane

Explanation:

During a food delivery inspection, you notice that half of the vegetables are spoiled. what should you do?

Answers

You should refuse the delivery of the food that is spoiled. Look closely at the remaining items to see if they are starting to spoil. Take a picture of the spoiled food if possible and document the delivery and what you did for the situation.
Final answer:

During a food delivery inspection, any spoiled food should be rejected due to health and safety concerns. Reporting the issue to superiors and suppliers is essential, as is documentation of the issue.

Explanation:

During a food delivery inspection, if you notice that half of the vegetables are spoiled, proper action must be taken. For health and safety reasons, spoiled food should never be accepted. In this case, you should reject the delivery and immediately report the problem to both your superior and the supplier. This is vital to ensure that quality standards are being met and to prevent potentially severe health consequences.

Additionally, documenting the problem, including taking photographs, can be useful for future reference and can potentially prevent similar incidents in the future.

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how did newton use creativity and logic in his approach to investing light

Answers

light passing through a prism is your answer

Which type of food service operation would likely produce the most number of carryovers each day?

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Fine dining and casual dining restaurants will produce the most number of carryovers, reasons explained herewith.

Fine dining restaurants offer a-la-carte or buffet menu options, in both cases the amount of customers are estimated basis the restaurant's historical experience and the current scenario in the market. The estimates are usually optimistic, thereby the supply would exceed the demand in most instances. The restaurant would not like to be short of food at any point in time as this will be a huge dent on their brand and credibility. The amount of food that customers order will vary as well, and not all customers tend to be disciplined when it comes to finishing whatever they ordered for - this will result in wastage or throw-aways as well.

Casual dining restaurants, like the above example, will also have a lot of carry-overs for the same reasons as fine dining restaurants. One difference is that the customers demographics in such restaurants are very different. They mostly comprise of youth and college goers, for whom traditionally, restaurant is a fun place and the objective is not only food. The behaviours and attitudes towards food in such places tends to be extremely casual as well, so the chances of wastage are higher. Possibilities of carry-overs in such restaurants could be far higher than the fine dining restaurants and there could be certain seasonal trends impacting their business as well.

Pizza parlor and quick service restaurants usually prepare food only after receiving the full orders and their menus have limited options as well, therefore, helping them to estimate their demand better.

Cafeteria always caters to a particular estimated number of people and the customers are mostly repeat ones, thereby making the estimation process and the delivery process more accurate, and thereby, reducing carryovers and wastage hugely.

Earth Science

Which process within the rock cycle operates at the Earth's surface?

Answers

Erosion and sedimentation occur at the Earth's surface with weathering and processes like running ice, water, and wind. 

Answer:

weathering

Explanation:The events of the rock cycle take place at the Earth's surface and within the Earth's interior. Weathering and erosion play a significant role in the rock cycle and occur at the surface.

Many plants are dwarfed, but their few blossoms may be full-sized. Cushion plants, looking like ground-hugging clumps of moss, escape the strong winds blowing a few inches above them. Cushion plants may also have long taproots extending deep into the rocky soil. Many flowering plants of the __________ have dense hairs on stems and leaves to provide wind protection or red-colored pigments capable of converting the sun's light rays into heat. Some plants take two or more years to form flower buds, which survive the winter below the surface and then open and produce fruit with seeds in the few weeks of summer.

The plant adaptations described in the paragraph above would be found in what biome on Earth?

A) tundra
B) desert
C) glacier
D) deciduous forest

Answers

The plant adaptations described in the paragraph above would be found in Tundra biome on Earth.

What is tundra biome?

Of all the biomes, tundra is the coldest. Tunturi, which means treeless plain in Finnish, is the root of the word tundra. It is renowned for its landscapes that have been shaped by frost, extremely low temperatures,

limited precipitation, insufficient nutrients, and brief growth seasons. An organic substance that has died serves as a nutrient source. The two main nutrients are phosphorous and nitrogen. Phosphorus is produced through precipitation, while nitrogen is produced via biological fixation.

Therefore, The plant adaptations described in the paragraph above would be found in Tundra biome on Earth.

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The correct option is A i.e. tundra.

The plant adaptations described are typical of the tundra biome, where harsh conditions necessitate unique survival strategies such as low growth, long taproots, and protective hairs.

The plant adaptations described in the paragraph are characteristic of the tundra biome. The tundra is known for its harsh, cold, and windy conditions, where plants have developed specific adaptations to survive. These adaptations include low-growing forms to escape wind, long taproots to access deep nutrients, and dense hairs or red pigments to protect against wind and convert sunlight into heat.The tundra's short growing season requires plants to be efficient in nutrient storage and energy usage, as they often take multiple years to produce flowers and seeds. Examples of such plants include cushion plants, which hug the ground to avoid strong winds, and flowering plants with large blossoms but small vegetative parts to minimize exposure and conserve energy.

The writing system used in mesopotamia is called ________.

Answers

Cuneiform. im certain 

Final answer:

Cuneiform is the writing system used in Mesopotamia. It first started as a pictographic system but evolved to include both pictographs and syllabic symbols. The script allowed different Mesopotamian cultures to adapt it to their own languages.

Explanation:

The writing system used in Mesopotamia is called cuneiform. It was first developed around 3000 BCE to keep track of tax records. Originally, cuneiform started as a pictographic system where each word or idea was represented by a symbol. However, it later evolved to include both pictographs and syllabic symbols that represent sounds.

Cuneiform was a complex writing system that was used to symbolize a great number of sounds, allowing different Mesopotamian cultures to adapt it to their own languages. The script was initially read from left to right and bottom to top. Cuneiform was primarily used for record-keeping, but it eventually evolved to include the creation of true forms of literature.

The pancreas, an organ present in certain animals, produces enzymes used elsewhere in in the animals' digestive systems. which cell structure(s) might produce those enzymes?

Answers

Enzymes are normally proteins or modified proteins which are used to manage and control the rate of a reaction. When it comes to pancreatic enzymes, Amylase, Chymotrypsin, Lipase and Trypsin all are used to smooth the progress of the breakdown of foods we eat. Cytoplasm's are membrane bound organelles that include digestive and hydrolytic enzymes.

Which of the following arising out of mass extinction serves as an advantage to nature?

Answers

New, more adaptable species flourish, replacing the extinct species.
The selection pressures before the extinction tend to favor a certain type of organism and the sudden shift in conditions help others move up the food chain.

How does the equation for cellular respiration compared with the equation for photosynthesis?

Answers

In plants, photosynthesis, occurring in chloroplasts, is an anabolic (bond-building) process whereby CO2 and H2O combine with the use of light (photon) energy. This yields O2 and sugar (i.e. glucose). This occurs in 2 phases: light-dependent and dark (Calvin cycle) reactions, which both continually recycle ADP/ATP and NADP/NADPH.
The catabolic (bond-breaking) process in plants is cellular respiration, in which glucose is broken down with O2 by glycolysis (cytoplasm only) and mitochondrial reactions (Krebs cycle and E.T.C.) to yield CO2 and H2O. These reactions recycle ADP/ATP and NAD/NADH. The CO2 and water produced by cellular respiration feed into the photosynthetic processes, and in turn, the O2 and glucose resulting from photosynthesis supply the respiratory reactions.

Final answer:

Photosynthesis and cellular respiration are two essential processes in biology. The equation for photosynthesis produces glucose and oxygen, while the equation for cellular respiration uses glucose and oxygen to produce carbon dioxide, water, and ATP.

Explanation:

Photosynthesis and cellular respiration are two processes that are connected and essential for life. The equation for photosynthesis is: 6CO2 + 6H2O + light energy → C6H12O6 + 6O2. On the other hand, the equation for cellular respiration is the direct opposite: C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP (energy).

Photosynthesis uses energy from sunlight to convert carbon dioxide and water into glucose and oxygen, while in cellular respiration, glucose and oxygen are broken down to produce carbon dioxide, water, and ATP. Therefore, the equations for the two processes represent the reverse reactions of each other.

Eli can remember what he did last week, but he cannot remember the birth of his cousin (which happened immediately before eli received a head injury in a motorcycle accident). what is eli's condition?

Answers

Eli's condition is called "Retrograde Amnesia."  With this type of amnesia, a person can remember only things that happened after the injury occurred. They may lose all the memories that they had before an accident or before a certain type of illness, like a disease. They will also forget anything they learned before having Retrograde Amnesia. This can be permanent or the patient may recover some memories after a while. 

Pain that is felt in regions other than the one where the source of the pain lies is​ called

Answers

Answer:  "referred pain" .
____________________________________
Final answer:

Referred Pain refers to pain that is perceived in areas different from the actual source of the pain. This phenomenon often results from shared nerve pathways between the site of the problem and the area where the pain is felt. This type of pain can, in some instances, be indicative of serious ailments such as heart attacks.

Explanation:

The sensation of pain felt in regions other than where the source of the issue lies is known as Referred Pain. Referred Pain is often associated with visceral sensations (originating from organs within the body). For instance, patients experiencing a heart attack may feel pain in their left shoulder and arm, even though the problem lies in the heart, not the shoulder or arm. This seeming displacement of perceived pain occurs because these areas share nerve pathways with the 'problem' organ, in this case, the heart.

In this context, pain can generally be categorised into either neuropathic or inflammatory. Inflammatory pain results from tissue damage, while Neuropathic pain results from damage to neurons of either the peripheral or central nervous system, causing pain signals sent to the brain to be exaggerated. Suitable treatment for such pain varies and can range from relaxation therapy to the use of analgesic medications, to deep brain stimulation depending on various factors including the severity of the pain and any associated medical/psychological conditions.

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Which feature signifies to astronomers that a distant star is part of a planetary system? a.) The star periodically dims. b.)The star expands into a red giant. c.)The star moves through the sky. d.)The star continuously gets brighter.

Answers

Answer: a) The star periodically dims.

A star is the body of gas in which nuclear fusion of gases like helium and hydrogen  takes place due to this reason the star glows or dim. Star gets the ability to generate light because of this nuclear fusion which  cannot be observed in planets although the process of generation of star and planet is the same.  In distantly located star under observation, it's luminosity ( the property of  emitting lighting) is controlled by size of the star, the larger the size of the star it will have greater surface area the more profound will be the nuclear fusion in it and more light will be emitted. Second factor is the gaseous interaction of gases in and around the star and their temperature which causes the change in the light which has to pass through a layer of these gases. Therefore,  the distant star observed will show light fluctuations.

The star periodically dims is a feature that signifies to astronomers that a distant star is part of a planetary system.

Who is astronomer?

A scientist who concentrates their research on a particular issue or area outside the purview of Earth is called an astronomer in the science of astronomy.

They perform observational (by evaluating the data) or theoretical astronomy when observing astronomical objects including stars, planets, moons, comets, and galaxies.

Planetary science, solar astronomy, the creation or evolution of stars, or the formation of galaxies are a few examples of subjects or fields that astronomers study. Physical cosmology, which studies the entire Universe, is a related but separate topic.

Therefore, The star periodically dims is a feature that signifies to astronomers that a distant star is part of a planetary system.

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How the changing species concept has affected classification systems

Answers

Answer:

Affects directly.

Explanation:

Affects directly because classification systems in biology are made with a logical structure of species to get ordered groups. For example, we have Taxonomy in biology, which is created to classify species; according to scientists this task has been doing for thousands of years ago, but had a big change of perception when Darwin published his Evolution Theory.

So, the last change in this subject was with Darwin. Modern system of classification is aimed to follow the Transmutation of Species, like Charles Darwin said.

As scientist discover new species, they have to add then in the data, that affected the classification systems.

What is a classification system?

A classification system is a way to group and organize data to compare it with other data.

Different types of classification system used for different type of data.

Multiple classification systems may be used in some datasets.

As the science knowledge is elaborating, there are going to be changes in the classification system.

Thus, as the new species are discovering, that affected classification systems.

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Which of the following can be best researched using a microscope?

I think it is C

A How well the body's systems are functioning
B Why organs are connected to one another
C The internal structure of cells within the body
D Which cells secrete hormones into the blood

Answers

        It would be C, The internal structure of cells withing the body. Microscopes are designed to look at cells, as the magnification is at that level.

Answer: Option C

Explanation:

The major advancement of the science in the field of research is the visualization of the cells under a microscope.

The cells that is present inside the human body can be seen under the microscope, this helps in the study of the cells and its various components.

Many diseases can be cured as the study of cell will allow us to know the defects and then the defects can be cured.

What happens to ammonia when it isn’t taken up by plants?

Answers

Ammonia that isn't take up by plants may undergo a process called nitrification. Sorry if this doesn't help! 

CaCO3 is an example of which type of material?
Select one:
a. mixture
b. colloid
c. compound
d. element

Answers

compound :) there you go

The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is that

Answers

The most plausible hypothesis is: Tropical regions generally have more available water and higher levels of solar radiation. They also have very high rates of immigration and very low rates of extinction.

explanation:
Water is essential for an abundance of life, and sunlight is the means by which the whole food chain receives energy. Plants convert the sunlight into food, herbivores eat them, and other animals eat herbivores.

Hope this helps, and muchas luck on your biology.

Can you explain how the water and carbon dioxide get into the plant in order to do photosynthesis? Also, can you describe the pathway for glucose to get into an animal for respiration?

Answers

Photosynthesis makes the glucose that is used in cellularrespiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While wateris broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to formwate

If there are three nucleotides coding for each amino acid and there are 20 amino acids, are there just 20 specific codons? if not how many are there?

Answers

15 amino acids hope this helps

A gamete from a human female contains _______. a gamete from a human female contains _______. 23 autosomes and a y chromosome 23 autosomes and either an x chromosome or a y chromosome. 22 autosomes, one x chromosome, and one y chromosome 22 autosomes and an x chromosome

Answers

The answer to this question would be: 22 autosomes and either an x chromosome or a y chromosome

The DNA count of human is 44 autosome with 1 pair of sex chromosome. A gamete will have half of the genetic material of the cell which will result in 22 autosome with 1 of the sex chromosome(either X or Y)

"according to ackerman, exactly what causes leaves to change color? what particular conditions cause the brightest colors in autumn leaves?"

Answers

When the trees prepare to face the winter the leaves stop making chlorophyll and the colors that were hidden from sight during the spring and summer came to live. The climate is responsible for the most intense colors. In years when the fall sunlight is strongest and the nights are cold and dry, the leaves show their most intense colors
After the summer solstice, daylight gradually begins to shorten. Trees consider this and pull nutrients from their leaves back to their trunk and roots. This effectively chokes off any nourishment to the leaves and leaves them scarred and unable to produce chlorophyll. This scarring and lack of chlorophyll causes the leaves to change colors and eventually they will break down and fall off the tree.

Nucleic acids ___

-combine to form carbohydrates?

-store and transmit hereditary information?

- are made up of amino acids ?

- form polysaccharides ?

Answers

Nucleic acids store and transmit genetic information that you inherited from your parents.

B. -store and transmit hereditary information? 

Nucleic acids store and transmit genetic information that you inherited from your parents.

B. -store and transmit hereditary information?

An adolescent is diagnosed with iron deficiency anemia. after emphasizing the importance of consuming dietary iron, the nurse asks him to select iron-rich breakfast items from a sample menu. which selection demonstrates knowledge of dietary iron sources?

Answers

Foods like ham and eggs would be a good source of dietary iron. Iron is found in red meats and eggs, nuts, legumes, and leafy greens. Consuming a larger amount of these foods will increase the amount of iron in the body, alleviating the deficiency.

A tissue in a mouse contains two types of cells: one that divides rapidly and one that divides more slowly. the most likely difference between these two cell types is that the slow-dividing cell type spends more time in _______ phase.

Answers

The most likely difference between these two cell types is that the slow-dividing cell types spends more time in G2 phase of interphase.

Which statements below describe the changes that molecules undergo when heat is applied during a phase change? (select all that apply.)?

Answers

The heat energy is used to move molecules further apart from each others.

When heat is applied, several phases of change occur , this is also known as a change of state. For example, when heating a liquid to make it a gas, also known as evaporation, you are making the spaces between the molecules even bigger because of the heat it suffered.




Which type of pacemaker discharges impulses at a single, steady rate, regardless of the heart's own electrical activity?

Answers

Fixed rate peacemaker discharges electrical impulses at a single and steady rate regardless of the underlying electrical activity of the heart. Different peacemakers are stimulated in different areas of the heart. This peacemaker impulse is implanted next to the collarbone, the surgery is done under local anesthesia.

Final answer:

Fixed-rate pacemakers provide continuous electrical impulses at a preset rate to the heart, regardless of the heart's natural electrical activity, to maintain a regular heart rhythm.

Explanation:

Fixed-rate pacemakers are the type of artificial pacemakers that discharge impulses at a single, steady rate, regardless of the heart's own electrical activity. The natural pacemaker of the heart, the sinoatrial (SA) node, typically initiates an electrical impulse that leads to a coordinated heartbeat. However, when the heart's electrical system malfunctions, causing arrhythmias or fibrillation, a fixed-rate pacemaker is used to ensure the heart continues to beat regularly. These devices continuously deliver electrical impulses at a preset rate, without sensing the heart's inherent rhythm.

How does the fluid sideways motion of the plasma membrane allow water to freely pass into and out of the cell?

Answers

Membrane proteins float in the phospholipid bilayers and then it uses selective permeability to allow certian substances to pass through.
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