Do tubifex worms have cells? if so, what are they?

Answers

Answer 1

Answer:

no

Explanation:

Tubifex tubifex, also called the sludge worm, “Boogie Worm”, or sewage worm, is a species of tubificid segmented worm that inhabits the sediments of lakes and rivers on several continents. ... They can also survive in areas heavily polluted with organic matter that almost no other species can endure.


Related Questions

This question is about the nervous system.
Describe the function of receptors in the skin.

Answers

Answer:

The skin possesses many sensory receptors in the epidermis, dermis, and hypodermis, which allows for discrimination of touch such as pressure differences (light vs. deep). Other qualities of the external world assessed by skin sensory receptors includes temperature, pain, and itch.

Explanation:

Answer:

What is the function of the receptors in the skin?

The skin possesses many sensory receptors in the epidermis, dermis, and hypodermis, which allows for discrimination of touch such as pressure differences (light vs. deep). Other qualities of the external world assessed by skin sensory receptors includes temperature, pain, and itch.

hope this helped

Explanation:

which statement concerning ATP and activity within the cell is correct?

Answers

ATP stands for Adenosine Di Phosphate.ATP is known as power currency of cell It's found in MitochondriaMitochondria is known as power house of cell.

Which of the following statements is true?

Answers

The answer is c.
RNA is single stranded


This is the answer because DNA is double stranded

DNA does not contain uracil

RNA does not contain deoxyribose sugar
hope this helps!!

Plz if I am right put a brainliest

Answer:

The First one, second and forth are false

and the 3 one is true

Explanation:

The DNA is doble stranded in a double helix structure. There are 5 nucleobases (adenine (A), cytosine (C), guanine (G), thymine (T), and uracil(U)), only the first 4 are present in the DNA whilist the U substitutes the T in RNA.

The DNA has deoxyribose sugar while RNA has ribose sugar, that's what gives the doble stranded and single stranded form respectively.

Which organisms are heterotrophs?
photosynthesizers
producers
consumers
plants

Answers

Answer:

consumers

Explanation:

Heterotrophs don't make their food.

Answer:

it's C

Explanation:

got 100 on edge

the connective tissue covering around a fascicle is the

Answers

Answer:

a layer of connective tissue called the perimysium.

Explanation:

describe a mature community. how does a mature community develop?

DUE IN 30 MINUTES HELP

Answers

Answer: simply has organisms*living things) that are well adapted to live together in the same area over time.

which unit of geologic time began 65.5 million years ago and continues to the present?

Answers

The Cenozoic Era

I hope that helped :)

Sulfur dioxide _____.
A.) creates a reddish-brown haze in the sky
B.) is a secondary air pollutant
C.) has an irritating odor and is colorless
D.) is relatively harmless to the environment
Answer is C

Answers

Answer:

C.) has an irritating odor and is colorless

Explanation:

Sulfur dioxide is a chemical compound that's very toxic, non-flammable, colorless, and has a pungent odor. It's chemical formula is [tex]SO_2[/tex].

what is the organ responsible for the production of bile

Answers

Answer:

Bile is a fluid that is made and released by the liver and stored in the gallbladder. Bile helps with digestion. It breaks down fats into fatty acids, which can be taken into the body by the digestive tract.

Explanation:

Answer:

the organ producing bile is pancreas

(I need help) The pedigree chart below shows the individuals in a family who exhibit a certain trait. Based on the information in the chart, what are the chances that a second child born to couple 4–5 in the third generation will show the trait?


Key:
Circle—Female
Square—Male
Green—Exhibits trait"

A. 25 percent
B. 50 percent
C. 100 percent
D. 0 percent

Answers

Answer:

50% chance

Explanation:

I took the test you can trust me

The chances that a second child born will be 50%.

What is a pedigree chart?Pedigrees charts are used to examine the pattern of inheritance of a particular trait in a family. It shows relationships between family members and individuals which have certain genetic pathogenic variants, traits, and diseases within a family.

Therefore 50% chances are there for the second child (option b).

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Some metamorphic rocks experience extreme pressure and form layered bands or are said to be _______________________, while others without bands are said to be ____________________

Answers

Answer:

Some metamorphic rocks experience extreme pressure and form layered bands or are said to be gneissic foliation, while others without bands are said to be non-layered

Changes in a population over time is due to what

Answers

Answer:

Due to different circumstances.

like marriage which creates increase in population

Why is sustainable use of natural resources important?

Answers

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The use of resources should be sustainable because many non renewable resources like coal and petroleum can be exhausted if they are over exploited.

how is the information contained in a signaling molecule received by a cell?

Answers

Answer: Depending on the nature of the signaling molecule, it may either bind to and activate a receptor protein embedded in the plasma membrane, or it may move across the plasma membrane and bind to a receptor protein in the cytoplasm.

Explanation: I found this answer on quizlet

Answer:

How is the information contained in a signaling molecule received by a cell? Depending on the nature of the signaling molecule, it may either bind to and activate a receptor protein embedded in the plasma membrane, or it may move across the plasma membrane and bind to a receptor protein in the cytoplasm

Explanation:

..If two solutions are isotonic to each other, then...

Answers

Answer:

They have the same concentration.

Explanation:

Isotonic, by definition, means that the two solutions are of equal concentration

2. What muscle (with two heads) allows you to flex your arm?

Answers

Answer:

Answer is Biceps brachi.

Answer:

Biceps Brachii

Explanation:

a typical eukaryotic cell has enough available atp to meet its needs for about 30 seconds. what is likely to happen to an individual when they exhaust their atp supply?

Answers

Eukaryotic cells rely on the molecular energy of ATP to sustain all of the reactions necessary to maintain life, in the absence of ATP, these reactions would come to a halt, and the cell would inevitably die.

ATP is a molecular compound that provides the energy needed by most cells to survive. ATP represents Adenosine triphosphate, which is an organic compound that provides energy to drive the essential metabolic reactions of living cells, such as:

Muscle contractionsNerve impulsesChemical synthesisNutrient absorbtion

In the situation in which a cell was to run out of ATP, these reactions would stop, given that they require ATP to function. This means that the cell would not be able to send or receive nerve signals, absorb the nutrients it needs, or even create necessary compounds such as proteins. The stoppage of these functions would lead to the death of the cell.

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Answers

Answer:

That would be the sun, because of its gravitational pull its what pulled the other planets closer, then making our solar system. However, the sun was formed after the solar nebula, but thats not an option, so the next thing made was the sun. I hope this helps you! :D

Answer:

Answer is the sun

Explanation:

hope it helps u❤

watson and crick were the first to suggest that dna is

Answers

Answer:

they suggested that DNA could make exact copies of itself

Explanation:

The two had shown that in DNA, form is function: the double-stranded molecule could both produce exact copies of itself and carry genetic instructions.Watson and Crick developed their ideas about genetic replication in a second article in Nature.

when did anton van leeuwenhoek invent the microscope

Answers

Answer:

1666

Explanation:

Explain why roots are not needed in marine algae?

Answers

Because they lack vascular system !

males are more often affected by x-linked traits than are females because ________.

Answers

Answer:

A male with a mutation in a gene on the X chromosome is typically affected with the condition. Because females have two copies of the X chromosome and males have only one X chromosome, X-linked recessive diseases are more common among males than females.

Explanation:

Hope this helps you a lot!

how to find percentage change in mass
and how to find change in mass if you're only given the mass before and mass after? ​

Answers

Answer:

Mass Difference= Final Mass- Initial Mass

To find the “Percent Change in Mass,” divide the “Mass Difference” by the “Initial Mass.”

Explanation:

Why is knowledge and skills important in animal care and breeding? Explain in 3 to 5 sentences.

Answers

Answer:

to be thorough and pay attention to detail.

the ability to use your initiative.

to be flexible and open to change.

patience and the ability to remain calm in stressful situations.

the ability to work well with others.

the ability to accept criticism and work well under pressure.

To be successful as an animal breeder, you should have knowledge of the animal breeding process

a passion for animal breeding,

and knowledge of the potential risks of animal breeding.

Ultimately, a top-notch animal breeder should be an effective communicator, have good organizational skills, and be physically fit.


Which organelle is labeled i?
animal cell

Answers

Answer:

I believe the line is pointing to the nucleus, which is the green ball in the center of the cell

Explanation:

Can someone pls help me with this 2 questions!!

Answers

Answer:

water contracts and ice sinks

Answer:

For #2, water expands when it freezes, therefore it floats!

Explanation:

Water first condenses when it freezes until it reaches about 4 degrees Celsius, where it then slowly expands by about 9%. It also floats! You can observe this yourself by placing ice into a glass full of water.

Ice floats because it is less dense than the water below.

Which of the following is the central issue underlying a problem that needs to be addressed

Answers

Answer:

you didnt list the options

Explanation:

plants use the ____________ to make organic molecules.

Answers

The answer is light-independent reactions.

insects
APPLY Identify the biotic and abiotic components of the taiga ecosystem shown here. Can
you list a few more biotic and abiotic components that might be a part of this ecosystem?
plants
sunlight
elk
air
snow
abiotic
biotic
ha

Answers

Answer:

Is there more to this question I actually might be able to help

Explanation:

which statement best explains the orientation of the phospholipid molecules in this model?

Answers

Answer:

B.) The hydrophilic phosphate groups of the phospholipid molecules are attracted to the aqueous internal and external environments.

Explanation:

Hope This Helps! :)

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Sort the titles according to whether or not the therapist can prescribe medication. re the two currents that flow in an X-ray tube, and how are they related? An X-ray tube is being operated with a tube potential of 30 kV. a) How may the number of X-ray photons produced be increased? b) With respect to the filament, what limits the X-ray tube output and why? c) Suggest one design change to the tube that could be made to further increase output Which of these bones is part of the axial skeleton?A. hyoid boneB. thigh boneC. wrist boneD. ankle boneE. collarbone Identify the functional groups present in each molecule. A 19-carbon compound is composed of one five-membered ring and three six-membered rings. Carbon 3 is double bonded to an oxygen and attached to carbon 2 and carbon 4. Carbon 17 is attached to an oxygen, which is attached to a hydrogen. i. hydroxyl group ii. carboxyl group iii. carbonyl group A central carbon is attached to an amine, two hydrogens, and a carbon that is double bonded to an oxygen and single bonded to an oxygen attached to a hydrogen. i. amino group ii. carboxyl group iii. amide group How does a computer do its work? Mention its working principle. what is social emotional learning in the classroom Classify the quotient as positive, negative, or zero - 25 - 5 Underline the word needs correcting and correct it:1.My mother asked me if I could help her do gardening tomorrow. ___________ plz help answer the following questions Find the EQUATION of the line through (-10,-12) and (-15,3). Use the form y=mx+b. What is the meaning of the word "strike in thispassage?hitrefuse to workremovebegin the connective tissue covering an individual muscle fiber is the need help with this plz What effect did Roman rule have on the Diaspora?Options:Strict Roman rules put severe limits on Jewish people, causing many to flee the empire.Under Roman law, Jewish people were encouraged to reject Judaism and adopt Roman ways.The rules established under the Roman Empire preserved the Jewish faith and cultural practices.Roman leaders prevented Jewish people from worshipping freely and rebuilding the Temple of Jerusalem. Which of the following is the best explanation for the fact that crushing increases the rate at which a solid dissolves in a liquid?Select one:a. The temperature of the solution is increased when the solid is crushed.b. The surface area of the solute is increased when it is crushed.c. Crushing increases the amount of solute present.d. Crushing makes stirring the solution easier. Which of the following would require more energy to heat it from 10C to 20C? a. 200 kg of water b. 200 kg of aluminum C. 100 kg of steel why are being flammable and combustible be considered to be chemical properties and not physical properties? Alani has a summer job as a lifeguard. She makes $8/h for up to 40 h each week. If she works more than 40 h, she makes 1.5 times her hourly pay, or $12/h, for each hour over 40 h. 1. How much will Alani earn if she works: a. 37 hours?Please i need this now Find the upper quartile for the data. {9, 6, 13, 8, 8, 10, 9.5, 8, 7.5, 8.5}A. 9B. 9.5C. 10D. 8.5 nathalie, customer relations manager at digital media, inc., must inform her clients of a 15 percent price increase for all services. in doing so, she should be sure to