diffusion of water through a semipermeable membrane is called: select one: a. endocytosis b. diffusion c. active transport d. osmosis

Answer: cities

Explanation:

Answer:

It allows them to save energy

Explanation:

Hibernation is a behavioral adaptation that involves physiological changes to survive during wither months. These physiological changes can include a decrease in body temperature, respiratory/heart rate and metabolism. The main purpose for which animals enter hibernation is to conserve energy, thereby surviving adverse climatic conditions and/or periods when food is scarce. Some examples of true hibernators (i.e., animals that enter into a state of minimal activity) include bats, hedgehogs, allies, squirrels, marmots, etc.

Answer:

All leaves have the same basic structure - a midrib, an edge, veins and a petiole. The main function of a leaf is to carry out photosynthesis, which provides the plant with the food it needs to survive. Plants provide food for all life on the planet.

Explanation:

Answer:

yes.

Explanation:

because the figure represents a lot more similarities than differences

The likely explanation for the presence of fingernails on a manatee's front flippers is that they are vestigial structures.

Vestigial structures are remnants of traits or features that were functional in ancestral species but have lost their original function over the course of evolution. In the case of manatees, the presence of fingernails on their front flippers is considered a vestigial structure.

Manatees, being aquatic mammals, are descendants of land-dwelling ancestors. In their evolutionary history, their ancestors had front limbs that were more adapted for terrestrial locomotion.

Over time, as manatees adapted to an aquatic lifestyle, their front limbs evolved into paddle-like flippers for swimming. However, vestiges of their ancestral terrestrial adaptations, such as the presence of fingernails, remain.

The fingernails on manatees' front flippers no longer serve a functional purpose in terms of manipulating objects or digging, unlike the nails on human hands. Instead, they are remnants of a characteristic that had relevance in the evolutionary history of manatees' ancestors but are no longer necessary or actively used in their current aquatic environment.

Therefore, the presence of fingernails on a manatee's front flippers is best explained as a vestigial structure.

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A virus that mutates represents the characteristic of living things that is evolution. Unicellular organisms have a cell membrane made of a lipid bilayer, whereas viruses have a protein coat. This is the main distinction between viruses and unicellular organisms.

A virus's genes experience sporadic "copying mistakes" when it multiplies (i.e. genetic mutations). In addition to other changes to the virus throughout time, these genetic copying mistakes might result in modifications to the virus' surface proteins or antigens. A virus's genetic makeup (DNA or RNA) can alter permanently through a process known as mutation. If a mistake is made in copying the virus's DNA or RNA, a mutation may result. There are certain viruses that have extraordinarily high rates of mutation, however, this is not always the case. DNA viruses often have modest mutation rates, but RNA viruses typically have high mutation rates. These antigens help our immune system identify and combat viruses.

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Answer:

The nucleus is the center of the cell. It holds the cell's DNA.

The ribosome(s) are made of RNA. They translate genetic code into amino acids that hold proteins for the cell.

The endoplasmic reticulum produces proteins similar to the ribosome(s) so that the cell can function on a day-to-day basis.

Hope this helps!

Answer:

Nucleus:

The nucleus is found in most cells. It is usually in the middle of animal cells. In plant cells, it is towards the edge. The nucleus hold the DNA, which is like a code that instructs the cell on what type of protein to synthesize.

Ribosome:

They are made of RNA and proteins, and are very small. This is where the cell, using instructions from the nucleus, synthesizes proteins by joining long chains of amino acids in a particular sequence.

Endoplasmic reticulum:

They can be either smooth or rough. Its main function is also to make proteins and lipids, and transporting and processing them.

Hope it helps!

Answer:

Epigenetics

Explanation:

It is the study of changes in organisms caused by modification of gene expression rather than alteration of the genetic code itself.

Answer:

False.

Explanation:

The Sun is a Star, the Earth orbits the Sun.

A is the vertebrate sense in which the "resting," or unexcited, condition of the receptor is depolarized effect of anxiety (low vs. high) and stress (low vs. moderate vs. high) on test.

Everyone experiences anxiety occasionally, but persistent anxiety can reduce your quality of life. Though likely best known for altering behavior, worry can have negative vertebrate on our physical health. niety speeds up our heartbeat and breathing, concentrating blood flow to the parts of our brains that need it. You are getting vertebrate for a challenging situation by having this extremely bodily reaction. Test performance may be impacted by anxiety. According to studies, pupils with low levels of test anxiety perform better on multiple-choice question (MCQ) exams than pupils with high levels of anxiety. Studies have indicated that female students have greater levels of test anxiety than male students.

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Answer:

what happened my friend is everything fine well 1 + 1 equals 2 got it?

The engineering of an osteoarthritic cartilage model involves the differentiation of senescent human mesenchymal stem cells for the purpose of testing disease-modifying drugs.

The engineering of an osteoarthritic cartilage model is a research approach aimed at creating an in vitro system that mimics the characteristics and behavior of cartilage affected by osteoarthritis. Osteoarthritis is a degenerative joint disease characterized by the breakdown of cartilage tissue.

In this process, senescent human mesenchymal stem cells are used as the starting cell population. Senescence refers to the state of cell aging and reduced functionality. These cells are then induced to differentiate into chondrocyte-like cells, which are the cells responsible for producing and maintaining cartilage.

By differentiating senescent human mesenchymal stem cells into chondrocyte-like cells, researchers can create a model that closely resembles osteoarthritic cartilage. This model can be used to study the disease's progression, test the efficacy of disease-modifying drugs, and explore potential therapeutic interventions.

By subjecting the engineered osteoarthritic cartilage model to different disease-modifying drugs, researchers can observe and analyze the effects of these drugs on the cartilage tissue. This approach provides valuable insights into the potential effectiveness of different treatment strategies and helps advance our understanding of osteoarthritis and its management.

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Explanation:

The bacteria’s helps in breaking down the organic materials which has nitrogen in it, and helps in giving the nitrogen back to the cycle. Bacteria helps in breaking down of the leaves and then it diffuses the nitrogen to the soil. Prokaryotes also plays an important role in the nitrogen cycle. The nitrogen fixing bacteria present in the root zone of plants basically in the soil, helps in conversion of the nitrogen into ammonia. Then the nitrifying bacteria converts the ammonia to the nitrites or can say nitrates.  

Answer:

sorry I didn't know hahaha

Answer:

the boll weevil has an amazing complex gene system that allows them to quickly overcome many poisons. if so much as a few survive those few will have offspring and adapt being completely immune to the once deadly poison.

Answer:

C: He

Explanation:

The chemical element with the lowest melting point is Helium.

Answer:

the answer is c.he it wont let me have short ans

Answer:

giant-impact theory

Explanation:

I hope this helps

The other substance produced during the complete combustion of petrol is water \((H_2O)\) along with carbon dioxide \((CO_2)\).

The other substance produced during the complete combustion of petrol, along with carbon dioxide, is water \((H_2O)\). Petrol, which is a mixture of hydrocarbons primarily consisting of carbon and hydrogen atoms, undergoes combustion when exposed to oxygen. During this process, the carbon atoms in petrol react with oxygen \((O_2)\) to form carbon dioxide \((CO_2)\), while the hydrogen atoms combine with oxygen to produce water \((H_2O)\). The balanced chemical equation for the combustion of petrol can be represented as:

\(C_nH_m + (n + m/4)O_2\) → \(nCO_2 + (m/2)H_2O\)

Where CnHm represents the generic formula for petrol hydrocarbons, and n and m represent the respective numbers of carbon and hydrogen atoms present in the hydrocarbon molecule.

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The correct question is:

Petrol is a mixture of compounds that contains only carbon and hydrogen complete combustion of petrol produces carbon dioxide and one other substance what is the other substance?

Answer:
slopes that are present in the mountains 
hope this helped :)

Answer:

B

Explanation:

The statement that describes the relationship between breathing and cellular respiration in animals is carbon dioxide is exhaled and is a product of cellular respiration. The correct option is B.

Cellular respiration is a process of breakdown of food material and releasing energy into the blood. Oxygen is mixed with the food material and carbon dioxide is released out of the body.

Breathing is a process of taking in oxygen and taking out carbon dioxide from the body. Breathing is the first step of respiration, as oxygen is needed for the respiration process, which is done by breathing.

Carbon dioxide is a product of cellular respiration, and it is taken out of the body by breathing.

Thus, the correct option is B. Carbon dioxide is exhaled and is a product of cellular respiration.

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Answer:

You need genes from both the mother and father

Explanation:

The gene for red hair is recessive, so a person needs two copies of that gene for it to show up or be expressed.

Answer:

C

Explanation:

took the quiz

Answer:

False!

Explanation:

Sea snakes are mostly confined to the warm tropical waters of the Indian Ocean and the western Pacific Ocean, with a few species found well out into Oceania.

<3 <3 <3

Volcanic eruptions can impact the availability of resources by preventing sunlight from reaching producers.

Volcanic ash is responsible for blocking sunlight in the air. Volcanoes erupt with a powerfully destructive mixture of ash, lava, hot, toxic gases, and rock. Explosions from volcanoes have claimed lives. Volcanic eruptions can lead to significant health risks and impact the availability of resources.

Volcanoes produce a variety of land resources. In the west-central Pacific Ocean, on a small volcanic island called Micronesia. In addition to providing a place for people to reside, these volcanic islands have evolved into communication and shipping hubs.

Minerals, volcanic glass, and microscopic pieces of ragged rock make up volcanic ash. Explosive volcanic explosions produce ash. Volcanic ash plumes can cover a sizable portion of the sky, completely blocking out the sun and decreasing visibility. Thunder and lightning are frequently present along with these huge and ominous clouds.

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The hydrophilic phosphate groups (PO₄³⁻) of the phospholipid molecules are attracted to the aqueous (H₂O) internal and external environments.

Phospholipids are crucial components of cell membranes, consisting of a hydrophilic phosphate head and hydrophobic fatty acid tails. The phosphate group (PO₄³⁻) in the head region is highly polar and carries a negative charge. Due to its polar nature, the phosphate group is attracted to water molecules, which are also polar due to the presence of oxygen and hydrogen atoms.

The hydrophilic phosphate groups of phospholipids are positioned at the surfaces of the cell membrane, facing the aqueous internal and external environments. They form hydrogen bonds with water molecules, stabilizing the structure of the membrane and allowing for interactions with surrounding molecules or ions.

The hydrophobic fatty acid tails, on the other hand, cluster together away from the water, creating a barrier that prevents water-soluble molecules from freely crossing the membrane.

Overall, the hydrophilic phosphate groups of phospholipids play a vital role in maintaining the integrity and functionality of cell membranes by interacting with the surrounding aqueous environments.

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Answer:

MKS system is the system of measurement in which length is measured in meter(m), mass in kilogram(kg) and time in second(s)

Answer:

Check a weather app or website, to see the weather forecast in your area.

Answer:

not right now

Explanation:

Todrick Organization is a merchandiser that revealed the accompanying data in light of 1,000 units sold: Deals $ 240,000 Starting product stock $ 16,000 Buys $ 160,000 Actuality stock $ 8,000 Fixed selling cost $.

Merchandisers are liable for all that happens to an item from the second it is conveyed to the store to the second a customer lifts it up off the rack. They screen item appearance and supply in different stores all through their assigned geographic region.

A merchandiser is somebody who is persistently engaged with business advancement by trading products.

A merchandiser is a business that buys a stock and exchanges it with clients for a benefit. Retailers and wholesalers are genuine instances of merchandisers since they ordinarily purchase products from makers to market and offer them to the public customers.

1. Cost of merchandise sold ($20,000 + $200,000 - $7,000) = $213,000

The variable authoritative cost displayed above ($12,000) is registered as follows:

Deals (a) $ 300,000

Commitment edge (b) $ 60,000

Complete variable expenses (a) ‒ (b) $ 240,000

Complete variable expenses (a) $ 240,000

The cost of merchandise sold is $ 213,000

Variable selling cost of 15,000

Cost of merchandise sold in addition to variable selling cost (b) $ 228,000

Variable managerial cost (a) ‒ (b) $12,000

The proper selling cost displayed above ($30,000) is registered as follows:

Commitment edge (a) $ 60,000

Networking pay (b) $ 18,000

Complete fixed costs (a) ‒ (b) $ 42,000

Complete fixed costs (a) $ 42,000

Fixed authoritative cost (b) $ 12,000

Fixed selling cost (a) ‒ (b) $ 30,000

2. Cost of merchandise sold ($20,000 + $200,000 - $7,000) = $213,000

Selling cost ($15,000 + $30,000) = $45,000

Authoritative cost ($12,000 + $12,000) = $24,000

3. The selling cost per unit is $300,000 ÷ 1,000 units sold = $300.

4. The variable expense per unit is $240,000 ÷ 1,000 units sold = $240.

5. The commitment edge per unit is $300 - $240 = $60.

6. The commitment design is more valuable since it puts together costs in light of their expense conduct. The commitment design empowers administrators to rapidly ascertain how variable costs will change in light of changes in unit deals.

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Q- Todrick Company is a merchandiser that reported the following information based on 1,000 units sold:

Sales $ 300,000

Beginning merchandise inventory of $ 16,000

Purchases $ 20,000

Ending merchandise inventory $ 7,000

Fixed selling expense $?

The fixed administrative expense of $ 12,000

Variable selling expense of $ 15,000

Variable administrative expense $?

Contribution margin $ 60,000

Net operating income $ 18,000

Required:

1. Prepare a contribution format income statement.

2. Prepare a traditional format income statement.

3. Calculate the selling price per unit.

4. Calculate the variable cost per unit.

5. Calculate the contribution margin per unit.

6. Which income statement format (traditional format or contribution format) would be more useful to managers in estimating how net operating income will change in response to changes in unit sales?