What are the characteristics of annelidas

Answers

Answer 1

Answer:- They are coelemate

-The body is covered with thin curticle

-They are triploblastic

-The have long and segment bodies

-Annelidas are bilaterally symmetrical


Related Questions

explain why adrenaline has opposite effects on the blood vessels of the gut and the muscles ​

Answers

Answer:

Main effects of adrenaline exerted on smaller arterioles and precapillary sphincters although veins and large arteries also respond to the drug. It constricts vessels of skin & mucus (mucous) membrane. It dilates BV of skeletal muscles. Thus net results of this is, decrease in the peripheral resistance.

Explanation:

HOPE IT HELPS

Answer:

adreneline triggers the body's fight or flight response.this reaction causes air passages to dilate to provide muscles with oxygen they need to fight danger or flee

The inferior region of the brain stem, the __________ houses many vital autonomic centers involved in the control of heart rate, respiratory rhythm, and blood pressure.

Answers

Answer:

The inferior region of the brain stem, the medulla oblongota houses many vital autonomic centers involved in the control of heart rate, respiratory rhythm, and blood pressure.

Explanation:

The medulla oblongata is the part of the brain that joins the spinal cord and forms the lower part of the brain stem. In the bulb there are ascending (sensory) and descending (motor) fascicles that communicate the spinal cord with the brain, in addition to numerous nuclei or centers (masses of gray matter) that regulate various vital functions. The medulla oblongata has the function of controlling vital and unconscious elements such as the heartbeat and blood pressure. Thus, it is responsible for maintaining the heart rate and regulating vasoconstriction. Also, it manages the control of respiratory function, maintaining it at all times.

How do somatic and inherited mutations differ?

Answers

Answer:

Inherited mutations exist in all cells in the body and somatic mutations only exist in the cell type that mutated.


HELP PLEASE !!!!
Which statement best describes the relationship between an allele's frequency and its dominance?
o Frequency and dominance are the same thing.
A dominant allele always has the highest frequency.
A dominant allele usually has the highest frequency.
o Frequency results from environmental stresses, not dominance.

Answers

Explanation:

Frequency and dominance are the same thing. A dominant allele always has the highest frequency. A dominant allele usually has the highest frequency.

Help me please I really need this tomorrow

Answers

19. place moth balls in the closet and observe after several days.

20. whenever wax or a candle burns it turns from solid to liquid but again at room temperature it turns to solid

21. evaporation, condensation, precipitation

22. it produces new substances

23. vinegar Bubbles when baking soda is added

24. steam

Which of the following statements is false?
А) Glucose molecules are the basic units of cellulose
B) Glycerol is a basic unit of oils.
C) Simple sugars like glucose are the basic unit of fats.
D) Amino acids are basic units of proteins.

Answers

The answer is b I’m not sure I think
The answer is B (Glycerol is a basic unit of oils)

which organsism transform nitrogen to a form this useful to plants? a. bacteria b.animals c.fungi d.humans

Answers

Answer:

a. bacteria

Explanation:

There are nitrogen-fixing bacteria whose sole purpose is to transform nitrogen into a form which can be used by our friends called the plants.

Answer:

A. Bacteria

Explanation:

Nitrogen-fixing bacteria are capable of transforming it into fixed-nitrogen particles, that are usable by plants

Fill in the blank question. The initial effect of a stimulus on a sensory receptor is a small, local change in membrane potential called a(n)

Answers

Answer:

The initial effect of a stimulus on a sensory receptor is a small, local change in membrane potential called a(n) receptor potential.

Explanation:

The process used by sensory receptors to transform the physical energy of the sensory stimulus into action potentials, the fundamental unit of information in the nervous system, is called sensory transduction. The entrance of positive charges towards the interior (mainly Na +), will cause a depolarization; while if there is an exit of positive charges from the interior (mainly K +) then hyperpolarization will occur. This change in membrane potential is called the receptor potential. A receptor potential is then a local potential that can sometimes represent the only response that results from the transduction process, for example in the taste sensory cell.

What's the importance of sun in power supply??​

Answers

Answer:

It provides solar energy to supply power through solar panels

Answer:

The sun provides more than enough energy to meet the whole world's energy needs, and unlike fossil fuels, it won't run out anytime soon. As a renewable energy source, the only limitation of solar power is our ability to turn it into electricity in an efficient and cost-effective way.

Explanation:

Follow me, thank you.

4. Describe an observation you made today and an inference you can make from that observation.

Answers

Answer:

my my teacher gives my class and I a mystery box for us to observe what's inside that box it was closed, as we was trying to know what's inside that box we were looking and thinking what does it sounds like, but my friend next to me says it sounds like a stapler and my other friend said it's not very heavy, as we were we said we could take another box just like that identified box and put a stapler since it sounds like a stapler and it's not that heavy as we know staplers are not that heavy. well we did that we check and our activity shows that the mystery box it slides and appear to be flat and all the box it slides in appear to be flat so that's the same thing as our box and the mystery box and we were looking at how does it sound when we close the box and everything we were checking how does it sound as we are observed that the mystery box it makes a metallic song when it strikes the side of the box an hour box the stapler makes a thudding sound when it strikes the side of the box and we also checked if the mass of the box was the same but it wasn't the mystery box was 270 g and our box was much more heavier which is 410 g so we were checking what was the really wrong thing we was checking and checking is like what should we do next, and we did in for the things in the box had to be different because our observation of the two boxes are different, and we observed yes things are different of course.

and there's a picture with the observation chart I will be showing it's above take a look and you will be have more understanding and knowledge about the really topic I am talking about thank you.

Select the correct locations on the image.
in which four locations do hurricanes occur?


Answers

Answer:

Explanation:

Hope that helps                                      

During intense exercise, the muscle cells require constant supply of ATPs but the supply of oxygen is low. In that case - the muscle cells of the person will switch from which to which pathway?

Answers

Answer:

Aerobic to lactic acid fermentation pathway

Explanation:

ATP, which is the usable form of energy in living cells, is obtained via a process called RESPIRATION. However, aerobic respiration requires a constant supply of oxygen to occur. Hence, during an intense exercise where the supply of oxygen is low, the muscle cell has to switch from the respiration pathway that requires oxygen to one that doesn't.

Fermentation is a kind of cellular respiration that does not require oxygen to occur. In the muscle cells of animals (humans inclusive), lactic acid is the product of the fermentation process, hence, it is called LACTIC ACID FERMENTATION. This means that the muscle cells, in a low supply of oxygen, will switch from AEROBIC to LACTIC ACID fermentation pathway.

The lodgepole pine has two kinds of cones that have seeds. What do they do for the lodgepole tree population?

Answers

Answer:

Seeds from cones on the forest floor may provide a viable seed bank for lodgepole pine regeneration following forest destruction by mountain pine beetles.

Explanation:

They do for the lodgepole tree population Seeds from cones on the forest floor may provide a viable seed bank for lodgepole pine regeneration following forest destruction by mountain pine beetles.

What is a possible limiting factor of that lodgepole pine?

The mountain pine beetle is the limiting factor to the population of lodgepole pines in Colorado. It devastated large numbers of trees in the state and in the northern mountains of the United States.  

Thus, lodgepole pine regeneration follows forest destruction by mountain pine beetles.

To learn more about  lodgepole pine click here:

https://brainly.com/question/10854623

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arrange these structures in order of size, beginning with the smallest
stomach
mitochondrion
starch grain
tracheal cell
nucleus

Answers

Answer:

1.starch grain (smallest)

2.nucleus

3.mitochondria

4.tracheal cell

5.stomach (largest)

How do spores survive even after the plant has died?
Spores are protected in a protective covering preventing it from drying out.
O Spores have special chemicals that prevent it from dying.
Spores are buried under rocks.
O Spores can naturally live forever.

Answers

Answer:

spores have special chemicals that prevent ot from

The cells inside our nerves are called what?​

Answers

Answer:

Cells of the nervous system, called nerve cells or neurons, are specialized to carry "messages" through an electrochemical process. The human brain has approximately 86 billion neurons. ... Neurons are surrounded by a cell membrane. Neurons have a nucleus that contains genes.

Explanation:

Answer:

Neurons are the information-processing cells of the nervous system. They are categorized as receptors, interneurons, or effectors, depending on their function. The dendrites of a neuron provide an extended receptive surface for the cell, increasing greatly the number of synaptic inputs.

which on is viviparous :
a. shark b. frog
c. Whale d. lungfish​

Answers

Answer:

whale

Explanation:

because they give direct birth to young ones

Excessive sugar intake is related to development of dental caries because
A. oral bacteria produce acids that dissolve tooth enamel when they metabolize sugars.
B. sugar leaches calcium and phosphorus out of teeth.
C. salivary amylase dissolves tooth enamel during carbohydrate digestion.
D. sugars make the saliva more alkaline, causing damage to tooth enamel.

Answers

Answer:

The correct answer is A.

Explanation:

Dental caries is a chronic dynamic disease or process that occurs in the tooth structure in contact with microbial deposits. Among the factors that favor the development of dental caries is the excessive consumption of simple sugars. The sugars consumed with the diet constitute the substrate of the oral microflora and initiate the process of cariogenesis. Streptococcus can ferment sugars in the diet to produce primarily lactic acid as the end product of metabolism. This lowers the pH and demineralizes tooth enamel. Cariogenic microorganisms are characterized because they are capable of transporting carbohydrates in competition with other microorganisms, which could be present in the plaque; the rapid fermentation capacity of this substrate made up of sugars and starch and its acidic capacity - acid products - and acidic acid - capable of performing various functions under conditions of extreme acidity. The marked decrease in pH will contribute to the demineralization of the tooth, favoring the appearance of carious lesions in hard tissues: enamel, dentin and cementum.

Multiple Choice Questions.
1. The leaf is attached to the stem at
(a) Petiole
(b) Node
(c) Spine
(d) Internode​

Answers

Petiole, hopefully this helps you

What happens if a person has one kidney removed? 1 point a. They will continue as normal b. They will stop making urine c. They will accumulate excess urea D. They will die.​

Answers

In general, most people with a single, healthy kidney have few problems. However, some long term problems have been seen in some people.

In some people who were born with a single kidney, or had a kidney removed during childhood, there is a chance of some slight loss in kidney function later in life. This usually takes 25 years or more to happen. There may also be a chance of having high blood pressure later in life. However, the loss in kidney function is usually very mild, and life span is normal. Most people with one kidney live healthy, normal lives with few problems. - kidney . org

Which type of protein would more likely be able to function as a channel through the plasma membrane

Answers

Answer:

Aquaporins

Explanation:

Aquaporins are the channel proteins that is present in the membrane of the cell which allow water to cross the membrane very quickly. This aquaporins play an important roles in plant cells, red blood cells, and certain parts of the kidney where this protein minimize the amount of water lost as urine. Without this protein, the diffusion of water across the cell membrane is not possible very quickly.

Which of the following does NOT cause weathering?
A. Plants
B. Water
C. Helium
D. Temperature change

Answers

Answer:C

Explanation:

A simple test to differentiate between Staphylococcus and Streptococcus is the addition of H2O2 to a colony to see if bubbles form, which are positive for catalase. Which organism would be positive

Answers

Answer:

The Correct answer is B, Staphylococcus.

Explanation:

The Catalase test is used to differentiate Staphylococci (Catalase positive) from Streptococci (Catalyst negative). The enzyme catalase is produced by bacteria that respire using oxygen and protects them from the toxic by-products of oxygen metabolism.

Catalase positive bacteria includes strict aerobes as well as facultative anaerobes. Catalase negative bacteria maybe anarobes or facultative anarobes that only ferment and don't respire using oxygen as terminal electron acceptor.

Catalase converts hydrogen peroxide to water and oxygen gas. Though both Staphylococcus and Streptococcus are gram positive bacteria, only Staphylococcus produces catalase enzymes.

Myoglobin levels are higher in Tibetans and other ethnic groups that live at high altitudes. Explain the benefit of higher myoglobin levels for individuals living at high altitudes.

Answers

Answer:

They are able to take up and store more oxygen in their muscles

Explanation:

According to Oxford dictionary, myoglobin is ''a red protein containing haem, which carries and stores oxygen in muscle cells. It is structurally similar to a subunit of haemoglobin.''

The fact that Tibetans have a high level of myoglobin implies that they are able to take up and store more oxygen in their muscles since myoglobin is involved in storage of oxygen in muscle cells. Hence elevated levels of myoglobins enables the muscle cells to work more effectively.

What about cellulose makes it ideal for structural support?

Answers

Answer:The answer would be D!

Explanation:

A hydrogen bond is one of the strongest molecular bonds. :)

What would most likely happen to this ecosystem if all of the gray wolves were removed?

Answers

Answer:

D. The fox population would decrease

Explanation:

The food web shows that the gray wolves population are the only population that prey on the moose population. If the gray wolves were removed, the population of moose would increase significantly and would dominate the ecosystem. This means that other herbivores won't be able to compete with the moose population for the forages and vegetation in the ecosystem. The population of the other primary consumers/herbivores will reduce also. By implication, the fox which depend on other smaller preys to feed on would not have much prey to feed on. The ultimate effect of the removal of the gray wolves would lead to a later decrease in the population of the fox

Rate each question from 1 to 5 ❑How much do you depend on natural ecosystems that you use for recreation (camping, fishing, hunting, hiking, swimming, boating)? ❑How much do you depend on natural ecosystems for the food you eat? ❑How important is preserving natural ecosystems to you? ❑How willing are you to sacrifice things in your life to make sure that natural ecosystems stay unharmed in the future?

Answers

Answer:

❑How much do you depend on natural ecosystems that you use for recreation (camping, fishing, hunting, hiking, swimming, boating)?  4

❑How much do you depend on natural ecosystems for the food you eat? 5

❑How important is preserving natural ecosystems to you? 5

❑How willing are you to sacrifice things in your life to make sure that natural ecosystems stay unharmed in the future? 4

Explanation:

The questions are closely related to ecosystemic services and how humans make use of it. Let us first review theoretical concepts, and then discuss the rating of the questions.

Ecosystem services refer to all the benefits that human beings can get from ecosystems, not only for survival but also for good life quality. There are four types of ecosystem services:

• Provision or supply:

These are the products obtained by nature to be used or consumed, directly or with previous processing. Among them, we might mention food, clear freshwater, fertile soils, geotic materials, raw materials (used for clothing, construction), renewable fuels, biochemical compounds, pharmacological/medicinal resources, among others.

• Regulation:

Refers to ecological processes that improve life. Among others, we might mention climate regulation, CO² absorption, water purification, air purification, erosion control, natural disaster avoidance such as flooding, soil fertility maintenance, waste recycling, pest/plague control, etc.

• Cultural:

Refers to not the material benefits. Ecosystems also provide a recreational place or area to spend time, learn, enjoy spiritual/religious space, and are a source of inspiration. It is considered to be cultural patrimony and the source of scientific knowledge.

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I answered the questions from my personal point of view, and considering 5 as the most important topic, and 1 as the less important. So, from most important to less important is 5, 4, 3, 2, 1.

How much do you depend on natural ecosystems that you use for recreation (camping, fishing, hunting, hiking, swimming, boating)?

Probably, we as species, do not need these activities to survive. However, we need them to have good mental health. These are activities that we enjoy and that produce satisfaction. Whenever we do things that we enjoy our organism secretes hormones that make us feel happy. This feeling is important when people are stress about any personal situation. So, this question does not get the highest rate, but it gets a significant one, a 4.

How much do you depend on natural ecosystems for the food you eat?

Basically, we depend on nature and the ecosystem to get food and any kind of supply. If the ecosystems are damaged and altered, there is a general disbalance, and every form of life is affected. Some species might even get extinct. If we keep damaging the environment as we are doing currently, we will get to the point of not having any supply available to survive. So this is one of the most important questions, which gets the highest rate, a big 5.

How important is preserving natural ecosystems to you?

This question is closely related to the anterior one. It is very important for us as a species to realize that we depend on nature 100%, that we need to take care of it and preserve ecosystems all around the world. With no healthy and equilibrated ecosystems, we do not get to survive. So this is the other question that gets the highest rate, 5.

How willing are you to sacrifice things in your life to make sure that natural ecosystems stay unharmed in the future?

This one is kind of difficult to answer, We could say that we are 100% willing to sacrifice to make sure ecosystems stay unharmed. However, we are so used to consumption, technology, confort, an easy lifestyle, and etc, that would be really difficult for us to sacrifice everything that we are used to. Just imagine yourself giving up your cellphone or your computer. Technology is one of the most polluting industries in the world. But we depend so much on it, that seems almost impossible to imagine us without it. This is why my score for this question is a 4. Personally, I surely would sacrifice too many useful things, but I find it hard to sacrifice some others.  

3
Which power does this expression simplify to?
[(7)(79)
1
722
1/ 를
O 74
O 7"

Answers

Answer:

c one

hopeit may help you

hope it may help you

Felicity draws this diagram on the board to explain one
of Mendel's experiments for her classmates. She says
that it shows the cross between two first-generation
offspring. What is the error in her diagram?
All
peas should be green.
All peas should be yellow-green.
One pea should be green and three peas should be
yellow.
O One pea should be yellow and three peas should
be green.

Answers

Answer:

The right answer is C

Explanation:

Answer:

The right answer is C

Explanation: Just got it right on edge 2022

Hello there can anyone help me?

i have to do a project for biology and i could use some help

Answers

I wish i did my homework
Other Questions
15. (x - 3)If f(x) = 2x2 5, find the following.16.fly-2)17. f(a+h)-f(a) 3. The following illustrates the growth of the suburbs post WWIIWhat government policy resulted in the growth of housing developments such as the one in thisimage?A. The G.I. Bill increased the access to financing options for new homes.B. Deflationary monetary policies caused a decline in the prices of new homes.C. Advertisements on television increased the public's desire to buy new homes.D. The tensions during the Cold War caused a decline in the prices of new homes.4. The following chart shows the number of registered births in the U.S. for three decades.19604,257,85019503,554,14919402,360,399Which reason best explains this change in the birthrate?A. prosperity following a conflictB. immigration due to demobilizationC. regulations ensuring healthful dictsD. immunizations preventing childhood diseases5. The following letter is from the Office of Price Administration in 1944. Revised Maximum Price Regulation 322, establishing maximum prices for Alfalfa Hay inCalifornia and other western states, is being revised.... The revised regulation will establishmaximum prices on a seasonal basisWhich reason best explains this revision?A. eliminating unfair rates during a recessionB. preventing inflation due to wartime scarcityC. Protecting farmers from competition D. Encouraging urban was created in 1943 A rectangle has width 65 mm and length 72 mm What is the area of the rectangle in cm2 ? Plastbolt, a company that manufactures and supplies plastic bottles, wants to acquire a smaller company. It plans to invest in two smaller plastic manufacturing companies and buy the one that it finds yields better returns. In this scenario, Plastbolt is most likely using How can the percentage of air be determined Is this a function or no? Can someone plz help with this problem about ritual of tharu caste The impeller shaft of a fluid agitator transmits 20 kW at 430 rpm. If the allowable shear stress in the impeller shaft must be limited to 65 MPa, determine (a) the minimum diameter required for a solid impeller shaft. (b) the maximum inside diameter permitted for a hollow impeller shaft if the outside diameter is 36 mm. (c) the percent savings in weight realized if the hollow shaft is used instead of the solid shaft. (Hint: The weight of a shaft is proportional to its cross-sectional area.) What is the simplest form of 20 over 315? What is the area? Please help!!! Following World War II, the mutual defense organization known as the North Atlantic Treaty Organization was formed I / move / new school / English / taught / native teachers. A)I moved to a new school which English is taught with native teachers. B)I moved to a new school which English is taught by native teachers. C)I moved to a new school where English is taught with native teachers. D)I moved to a new school where English is taught by native teachers How did the outcome of world war ll contribute to the development of the cold wara. it resulted in the united states and the soviet union developing into the world's most powerful states.b. it divided the ottoman empire territory evenly between the united states and the soviet unionc. it devastated the soviet unions military, allowing communists to seize control of its governmentd. it produced dozens of new democratic states in eastern Europe, which allied with the united states. Poland has achieved self-government and can enjoy its ______ since the collapse of the Soviet Union A hollow metal sphere has an external diameter of 12 cm and a thickness of 2 cm. (i) Given that the mass of 1 cm of the metal is 5.4 g, find the mass of the hollow sphere in kg. (ii) The hollow sphere is melted and recast to form a solid sphere. Find the radius of the solid sphere. who was the first Prime Minister of Nepal?a) B P Koirala b) K P Olic) Mathama Ghandid) Bhimsen Thapa Explain whywhen sugeris heated itdoes not boil but rather break downinto carbon and water? After the launch of Sputnik, which nationincreased its education requirements inscience?A. ChinaB. Great BritainC. United StatesD. USSR PLEASE HELPType the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).Complete the inverse function for the function given below.