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Observe the cut ends of the flatworms using the hand lens or the dissection microscope immediately after cutting.
What do you see?
Are there distinct differences between the two ends?
Observe the cut ends of the flatworms over a period of several days. Do the flatworm halves continue to exhibit the same degree of difference that was seen right after they were cut in two?
What kinds of changes occur in the flatworms as they recover from having been cut in two?

Answers

Answer 1

The above question requires a personal answer about your experience with cutting flatworms. I can't tell you what you saw in this cut, but I'll show you what happens when it occurs.

First of all, you must understand that flatworms are worms with a great capacity for cell regeneration even if several pieces have been cut.

In this case, when a flatworm is cut in half, we can see the following events happen:

At the moment of cutting, the two ends of the flatworm body are equally shaped and are straight ends, without deformations.The ends will not be different if the cut is done accurately, but it may differ slightly.After several days, the ends will present some deformations and will lose the straight shape caused by the blade.Deformations are extremely similar and change similarly.When recovering from the cuts, each side of the flatworm body formed a new flatworm and they are no different, they are the same and they are completely recovered.

This is because the cellular regeneration of flatworms is very fast and allows any part of the flatworm's body to create exactly the same beings, as they have the same genetic makeup.

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Related Questions

anthropologists are suspicious of naturalizing discourses because

Answers

-They ignore historical evidence showing how present-day arrangements contrast with earlier social arrangements

- They direct attention away from current social inequalities, insisting that these inequalities are so deeply rooted that attempting to change them would be impossible.

-They ignore variations in social arrangements in other present-day societies, which show that social life may be organized differently

Anthropologists are suspicious of naturalizing discourses because they ignore historical evidence showing how present-day arrangements contrast.

What are the roles of anthropologist?

An anthropologist is a person engaged in the practice of anthropology. Anthropology is the study of aspects of humans within past and present societies.

Creating research plans that address underrepresented topics. Executing research protocols that adopt a holistic study design. Promoting the co-creation of information by employing participatory approaches.

Anthropologists, people who conduct anthropological studies, identify aspects of being human as their focus. For example, one anthropologist might explore mating rituals of a small tribe in New Guinea.

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blood flows more slowly in the capillaries than in the aorta. why?

Answers

Answer:

because it a smaller part

Explanation:

Due to the capillaries' large overall cross-sectional area, blood flow there is slow, allowing for adequate nutrition exchange.

How blood flows through blood vessels?

The rate of blood flow dramatically decreases as it enters arteries, arterioles, and eventually, capillary beds, slowing to roughly 0.026 cm/sec, or 1,000 times slower than the aorta.

The capillaries, where blood flow is the slowest, provide time for the exchange of gases and nutrients. A force that opposes a fluid's flow is called resistance.

The majority of blood vessel resistance is caused by the size of the vessel. Blood flow reduces as vessel diameter shrinks due to an increase in resistance.

Therefore, the high total cross-sectional area capillaries blood flows more slowly.

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what is the overall purpose of cellular respiration?

Answers

Answer:

The overall purpose is to break down sugar in the presence of oxygen to release in the form of ATP.

Explanation:

Cellular respiration is the process that occurs in the mitochondria of organisms (animals, and plants). this process releases carbon dioxide  and water as waste products

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Describe any other local examples of relationships between organisms that may influence population numbers?

Answers

Answer: trees, flowers, bees

Explanation:

Which plate is the Eurasian plate?
A. D
B. C
C. B
D. A

Answers

i believe it’s D. :)

NEED HELP NOW PLEASE

Answers

Answer:

it's kind of hard to answer without the picture lol

Carbon cycle pls help me

Answers

carbon dioxide Coronavirus

The type of fibers specialized to continue contracting for extended periods of time, as would be required in running a marathon, for example, are _____ fibers.

Answers

The type of fibers specialized to continue contracting for extended periods of time, as would be required in running a marathon, for example, are slow fibers.

Slow fibers have numerous mitochondria that allow you to obtain large amounts of energy aerobically.

Its contraction speed is slow, providing it with high resistance to fatigue, thus maintaining exercise for hours, typical of endurance sports (marathon).

They are able to retain a longer duration of exercise at a more constant pace.

These fibers are important for endurance triathletes, those who compete in medium and long distance.

Therefore, we can conclude that the type of fibers specialized to continue contracting for extended periods of time, as would be required in running a marathon, for example, are slow fibers.

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Type the correct answer in the box, Use numerals instead of words.
The diagram shows the approximate amounts of carbon, in gigatons (Gt) per year, that move through the primary processes
of the carbon cycle. The numbers in yellow are due to natural processes, and the numbers in red are the result of human
actions. Based on this diagram, complete the statements.

Answers

Human activities release 9 gigatons of carbon into the atmosphere each year.

Human activities remove 5 gigatons of carbon from the atmosphere each year.

Humans’ net contribution of atmospheric carbon to the atmosphere is 4 gigatons each year.

9 gigatonnes of carbon are released into the atmosphere annually by human activity. Each year, 5 gigatonnes of carbon are removed from the atmosphere by human activity.

Thus, Each year, 4 gigatons of atmospheric carbon are added to the atmosphere as a result of human activity.

A fundamental mechanism that controls the movement of carbon dioxide  and other carbon compounds between the atmosphere, oceans, soil, and living things on Earth is known as the carbon cycle. The concentration of carbon in various reservoirs is influenced by a variety of natural and human factors.

Plants and other photosynthetic creatures take up about 120 Gt of carbon each year from the atmosphere through the process of photosynthesis (yellow).

Thus, 9 gigatonnes of carbon are released into the atmosphere annually by human activity. Each year, 5 gigatonnes of carbon are removed from the atmosphere by human activity.

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Explain how various depressants affect nervous system activity and behavior (alcohol, barbiturates, and opiates)

Answers

Answer:

They kill you

Explanation:

They kill you

You hear rumors about an unusual series of four islands in the Tierra del Fuego archipelago of Chile. On these islands, the typical laws of island biogeography theory are reversed such that species colonization rates are influenced by island size, not isolation, and small islands have higher colonization rates than larger islands. In addition, islands close to the mainland have higher extinction rates than islands far from the mainland. Of the four islands in this archipelago, a _____ island _____ the mainland would have the SECOND LOWEST equilibrium number of species.

Answers

Of the four islands in this archipelago, a SMALL island CLOSE TO the mainland would have the SECOND LOWEST equilibrium number of species. Biogeography studies species distribution.

Biogeography refers to the discipline that examines the range of distribution of species and taxonomic groups in a given geographical area over geological time.

The theory of island biogeography is a scientific theory that posits the idea that larger islands exhibit a greater amount of species (i.e., higher biodiversity) than smaller islands.

According to this theory (island biogeography), each island represents a particular unique ecosystem, which is different from other surrounding ecosystems.

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please help asap asap asap

Answers

Answer:

true

Explanation:

because it's helps the sunlight

Explain how a father with brown eyes and a mother with blue eyes can have children
with either brown or blue eyes. Remember to use complete sentences and correct
grammar.

Answers

Answer:

Brown eyes are a dominant trait.

Explanation:

Brown eyes are a dominant trait, and blue eyes are a recessive trait. If the father has brown eyes, they can have either a BB or Bb genotype; the mother must have a bb genotype in order for her eyes to be blue.

Refer to the Punnett Square below to see how it's possible for this mother and father to produce children with both colored eyes.

blood from the intestines flows directly to the __________.

Answers

Answer:

liver

Explanation:

Answer:

hepatic portal vein then liver

are sea snakes venemous?

Answers

Sea snakes are usually not aggressive unless provoked or cornered. Although they are highly venomous, only some bites result in significant symptoms of envenomation. The venom is injected by fangs.

which structure provides protection by cushioning the brain?

Answers

Either the skull or cranium. Or the liquid it stays in cerebrospinal fluid

Answer:

The arachnoid, fluid that cushions the brain.

Explanation:

Three layers of membranes known as meninges protect the brain and spinal cord. The delicate inner layer is the pia mater. The middle layer is the arachnoid, a web-like structure filled with fluid that cushions the brain. The tough outer layer is called the dura mater.

how do apocrine glands differ from other skin glands

Answers

Apocrine glands secrete in response to emotional stimuli

Which of the following is a lipid-protein substance produced by neuroglial cells?

Answers

Answer:

Myelin

Explanation: is correct

Answer:

3: Myelin

Explanation:

explain how the internal parts of a leaf are adapted for photosynthesis​

Answers

Explanation:

Leaves have a large surface area so more light hits them. The upper epidermis of the leaf is transparent, allowing light to enter the leaf. The palisade cells contain many chloroplasts which allow light to be converted into energy by the leaf.

What is the temperature shown on the thermometer?

Answers

Answer:

22

Explanation:

the thermometer goes by 2

5 spots before it reaches 30. Goes up by two each line

Out in the distance you see

Answers

F. berry bush

this is ur ans !!

The G. rabbit is the only primary consumer seen.

Trophic Levels in Food Chain

The food chain is made up of three main groups of living beings:

ProducersConsumers and Decomposers.

Each of them represents a trophic level of energy flow transmitted through food. The first trophic level is formed by the producers and the last one is the decomposers.

Primary Consumers

Are all organisms that feed directly on Producers. In this case, they are usually herbivorous or omnivorous animals, as they consume plants.

With this information, we can conclude that in the alternatives, g. rabbit is the only alternative corresponding to a primary consumer.

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a
The flu occurs when someone is infected with a specific virus. You may know you're sick when you have a fever, a
body temperature above 98.6° F. Based on your understanding of the reading passage, how do you think a fever
would affect enzymes and chemical reactions in your body? Would it decrease, increase, or have no effect on
them? Explain your answer.
Include one paragraph in your answer.

Answers

Well the flu is a virus. Knowing it’s a virus we know they multiply by entering a cell and passing over there rna then converted to be dna and creating other versions of them selfs until cytolysis occurs meaning the cell explodes with these new viruses and do the same with other cells. Since these dna conventions to create protein body parts of virus means there’s a increase in chemical reactions in the body and enzyme production. Also since your body has an immune system it can sense these antigens from the virus’s and cause increase in certain white blood cells to come in and kill these viruses and cells. In essence chemical and enzyme reactions increase. To survive.

Osteoclasts are responsible for which of the following processes?

Osteogenesis
*Resorption
Ossification
Oseogenesis

Answers

Answer:

b. Resorption

Explanation: is correct

Can climate changes be linked only to the greenhouse effect? Why or why not?

Answers

An increase in the atmospheric concentrations of greenhouse gases produces a positive climate forcing, or warming effect. ... The warming effect associated with carbon dioxide alone increased by 36 percent

A vaccine against HIV proteins made by a genetically-engineered vaccinia virus that has infected a eukaryotic cell line is a(n)

Answers

Subnit vaccine is the correct answer

I need help with one paragraph.

Answers

Answer:

paano nyo po ginawang dalawa po yung picture?

Explanation:

nakakonek ka po sa U.S.A dun po kayo sa Philippines po punta ka settings mo tapos pindutin mo yung change hanapin mo yung Philippines tapos pindutin mo,gumawa kana ng isang account mo,, Virtuoso na ako don,,,dadami followers mo,marami din sasagot sa question mo,marami din mamigay ng points

Help with this question

Answers

Answer:

You should mention a question if you want someone to answer it.

Urgent Care Centers are extremely busy during cold and flu season. The influenza virus can causes symptoms such as a cough, high fever, aches, and weakness. It can be very uncomfortable for patients and causes loss of time at work. What is the best way for a person to protect themself from getting the flu?
Group of answer choices

Obtain a immunization before flu season begins.

Drink a lot of fluids and get plenty of rest.

Begin taking antibiotics as soon as symptoms begin.

Take antiviral medication as soon as fever is detected.

Answers

Answer:

Obtain a immunization before flu season begins

Explanation:

The question asks for prevention and the other answers sTate what to do when you already have it.

which statement is true regarding the school circular respiration

A. the reactants of circular respiration are similar with the reaction of photosynthesis

B. the products of circular respiration are similar with the products photosynthesis

C. the reactants of circular respiration are obtained from the products of photosynthesis

D. circular respiration occurs on the and autotrophs photosynthesis occurs only in heterotrophs ​

Answers

Answer:

I think A or B, but I really think it's A, you should try it.

Explanation:

Hope it helps you:>

What is the function of the respiratory system?


to transport materials in the body


to break down food


to breathe


to rid the body of waste

Answers

The respiratory systems function is to breathe.

Answer:

To breathe... Respiratory System

Explanation:

Food is broken down by the Digestive System

The body is rid of waste by the Excretory System

Materials are transported by the Circulatory System

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