what is the purpose of protonephridia in flatworms? to serve as a structure for sexual reproduction to regulate fluid balance
Answers
the purpose of protonephridia in flatworms is To regulate fluid balance
Protonephridia are groups of flame cells. A flame cell is a type of excretory cell observed in relatively simple freshwater invertebrates, such as flatworms, rotifers, and nemerteans; these are the only animals with a dedicated excretory system. Flame cells operate like a kidney, expelling waste materials.
Flatworm, also known as platyhelminth, any member of the phylum Platyhelminthes are a bunch of soft-bodied, flattened invertebrates.
The role of the protonephridia is the same as that of most excretory organs: after ultra filtration, substances from the lumen are reabsorbed in a more or less selective manner. The large surface area of the channel cell aids in reabsorption.
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Complete question :
What is the purpose of protonephridia in flatworms?
To exchange gas
To serve as a structure for sexual reproduction
To sense prey
To respond to stimuli
To regulate fluid balance
Related Questions
How do the types of resources generated by Kentucky compare with the United States?
Answers
What makes an atom neutral?
Answers
Most of the mass of organic material of a plant comes from
A. water
B. carbon dioxide
C. soil minerals
D. atmospheric oxygen
E. nitrogen
Also, explanations for answers on why it's correct/incorrect please
Answers
Answer:
B. Carbon dioxide is the primary source of organic material in plants.
Plants are autotrophs, which means they produce their own food through the process of photosynthesis. During photosynthesis, plants use energy from sunlight to convert carbon dioxide (CO2) and water (H2O) into organic molecules like glucose, which they use as a source of energy and building material. Oxygen (O2) is also produced as a byproduct of photosynthesis.
While water and soil minerals are important for plant growth and development, they do not contribute significantly to the organic mass of the plant. Nitrogen is also important for plant growth and is a component of many organic molecules, but it is not the primary source of organic material in plants.
Therefore, the correct answer is B. Carbon dioxide, which is converted into organic material during photosynthesis, is the main source of the plant's organic mass.
Answer: B, carbon dioxide
Explanation:
the mass is primarily carbon because the carbon comes from the carbon dioxide used during photosynthesis. during photosynthesis, plants will convert the sun's energy into a chemical captured within the bonds of carbon molecules created from carbon dioxide and water. The Caborn ends up in the plant's food as well
These cliffs found off the coast of Ireland were formed from limestone deposits, as the Earth's sea level rose and dropped over millions of years. The limestone layers became cliffs when they were pushed up by
A) faulting
B) earthquakes
C) landslides
D) volcanoes
Answers
Answer:
Answer down below!
Explanation:
A. Faulting
Faulting is a process where the Earth's tectonic plates shift up and down, thus, the mountains were formed by faulting!
Answer: The answer is faulting.
Explanation:
hope this helps you.
Carbon is extremely important for all organisms. Because of this, what do we call carbon?
A. the element of air
B. the element of life
C. the element of water
Answers
Answer: the element of life sorry if I'm wrong hope this helps
Explanation: googled it
How many electrons fill each of the orbital levels in the diagram below?
Answers
1st orbital : maximum = 2 electrons
2nd orbital : maximum = 8 electrons
3rd orbital : maximum = 8 electrons
2+8+8 = 18 electrons
Put the following steps in order from 1st to last.
a. DNA is copied into mRNA.
b. The protein is assembled in the ribosome.
C. DNA is copied by a process called replication.
d. tRNA uses the instructions from mRNA to get the appropriate amino acids.
Answers
Answer:
c
a
d
b
Explanation:
1- DNA undergo replication to formed mRNA in nucleus
2- mRNA contain codon that will be paired with anticodon brought by tRNA.
3. Polypeptide chain formed and modified into protein
Answer:
cadb
Explanation:
easy,u need read books more
A woman brings in a spray puppy she has rescued off the street. She wants to adopt the dog.
but it looks sick. The dog seems tired, will not eat, and has diarrhea. Dr. Snyder looks very concerned. He takes a small sample of the puppy's feces and runs a test. Fifteen minutes later he comes back with bad news: the puppy has parvovirus. The disease is often fetal, but many dogs survive with good treatment.
Dr. Snyder tells Lizzie that parvovirus is preventable, and a dog cannot get infected if it is given a shot.
What type of shot would prevent a dog from the parvovirus disease? Explain how this shot protects a
dog so it cannot get sick from a virus.
Answers
Answer:
DHPP Vaccine
Explanation:
is used to protect your pet
Select the methods and results that best illustrate sustainable crop intensification.
GMO drought-tolerant seeds
low pesticide use
high-yield, low ecological impact
heavy use of irrigation
low cost
high cost
high use of synthetic fertilizer
high labor
Answers
Answer:
GMO drought-tolerant seeds, high use of synthetic fertilizer, high-yield, low ecological impact.
Explanation:
Crop rotation is one of the most powerful techniques of sustainable agriculture. Its purpose is to avoid the consequences that come with planting the same crops in the same soil for years in a row. It helps tackle pest problems, as many pests prefer specific crops.
Part I
Description: Cellular respiration is the process that allows your body to harvest a huge amount of energy from a single glucose. In fact, it's so efficient that you get 30 ATP for every 1 glucose molecule you eat. This exercise is going to break down exactly where each ATP comes from.
Instructions: For this presentation, your goal is to walk the audience through every step that is involved in generating an ATP, NADH or FADH2, include the names, structures and enzyme for each step. From there, look up the conversion rates from NADH and FADH2 to ATP and calculate exactly how 30 ATP are formed. Also include any step which uses an ATP (this will count against the total ATP formed).
What to submit: Please record yourself explaining the structures and enzymes as well as ATP calculation.
Answers
Cellular respiration generates ATP through glycolysis, pyruvate decarboxylation, Krebs cycle, and the electron transport chain, yielding 23 ATP.
Cellular respiration is the process that allows the body to extract energy from glucose. It involves several steps, including glycolysis, pyruvate decarboxylation, the Krebs cycle, and the electron transport chain. ATP, NADH, and \(FADH_2\) are produced at various stages.
Glycolysis converts glucose into pyruvate, generating a small amount of ATP and NADH. Pyruvate decarboxylation produces Acetyl CoA and NADH. The Krebs cycle further breaks down Acetyl CoA, producing NADH, \(FADH_2\), and ATP. The electron transport chain uses NADH and \(FADH_2\) to create a proton gradient, which is used by ATP synthase to produce ATP.
Each NADH can generate approximately 2.5 ATP, while each \(FADH_2\) can generate approximately 1.5 ATP. Considering the NADH produced in glycolysis (2 NADH) and the Krebs cycle (6 NADH), and the \(FADH_2\) produced in the Krebs cycle (2 \(FADH_2\)), the total ATP production is:
2 NADH x 2.5 ATP/NADH = 5 ATP
6 NADH x 2.5 ATP/NADH = 15 ATP
2 \(FADH_2\) x 1.5 ATP/\(FADH_2\) = 3 ATP
Total ATP = 5 ATP (from glycolysis) + 15 ATP (from NADH) + 3 ATP (from \(FADH_2\))
= 23 ATP
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Mice have two unlinked allele pairs that affect fur color. The table shows how allele pairs affect fur color. The term "agouti" describes fur with pigmentation that changes in each hair from the shaft to the tip, giving the fur a banded appearance. Mice with the aa allele pair ware albino, regardless of the second allele-pair combination. What is the probability of albinism in the offspring of a cross between two mice with AaBb alleles?
answer choices
1/16
3/16
4/16
9/16
Answers
The probability of albinism in the offspring of a cross between two mice with AaBb alleles is 4/16.
What is Probability?
This is an expression which tells how likely an event will occur. It is usually gotten by dividing the favorable number of outcomes by the total number of possible outcome.
The total number of possible outcome is 16 and the favorable number of outcomes (AaBb) is 4.
This means the probability is 4/16.
Definition of ADAPTATION:
A. A How energy moves in a food web.
B. A feature or behavior that helps an animal survive in its environment.
C. A neutral trait that has no direct effect on survival in any environment.
Answers
Answer:
B. A feature or behavior that helps an animal survive in its environment.
pathogens of the skin often enter via hair follicles and ducts of the sweat glands.
a) true
b) false
Answers
(Option A.) It is true that pathogens of the skin often enter via hair follicles and ducts of the sweat glands. This is because these areas provide entry points for bacteria and other microorganisms to penetrate the skin and cause infections.
Pathogens of the skin often enter via hair follicles and ducts of the sweat glandsTrue.Pathogens of the skin can enter the body through hair follicles and sweat glands, as they both provide entry points for bacteria and other microorganisms to penetrate the skin. The hair follicles act as a gateway for the pathogens, allowing them to reach the deeper layers of the skin, while the sweat ducts offer a moist environment that allows the microorganisms to thrive and spread.
In addition, sweat glands release oils and other substances that can provide a favorable environment for the pathogens to reproduce and cause infections. Therefore, it is essential to take proper precautions to protect the skin from these potential threats.
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which mature cell has no nucleus, no mitochondria and no ribosomes?
Answers
The mature cell that has no nucleus, no mitochondria, and no ribosomes is a red blood cell (RBC) or erythrocyte.
Red blood cell (RBC)Red blood cells are unique in that they lack these organelles in order to maximize space for hemoglobin, the protein that carries oxygen throughout the body. Without a nucleus, mitochondria, and ribosomes, RBCs cannot divide, produce energy, or synthesize proteins, and have a limited lifespan of about 120 days before they are removed from circulation and replaced by new RBCs.
So, the correct answer is red blood cell (RBC) or erythrocyte.
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Explain the importance of protin size in balanced diet
Answers
Explanation:
Protein is an important part of a healthy diet. Proteins are made up of chemical 'building blocks' called amino acids. Your body uses amino acids to build and repair muscles and bones and to make hormones and enzymes. They can also be used as an energy source.
Proteins are the building blocks of life. Every cell in the human body contains protein. The basic structure of protein is a chain of amino acids.
You need protein in your diet to help your body repair cells and make new ones. Protein is also important for growth and development in children, teens, and pregnant women.
Which one should I click ?
Answers
Answer:
the third one
Explanation:
higher concentration means more of that substance in a certain volume
imagine that creatine phosphate, rather than ATP, is the universal energy carrier molecule in the human body. Assume that the cellular concentrations of erestine phosphate, creatine, and phosphate are 20.7mM,2.07×10
−3
mM, and 6.70mM, respectively. Calculate the weight of creatine phosphate that would need to he consumed each day by a typical aduit human if creatine phosphate could not be recycled. (Estimate the free energy of hydrolysis of creatine phosphate under cellular conditions to determine how many moles required. Use the standard free energy ΔG
∗
=−43.3 W/mol and take the femperature to be 37
∘
C.) Δσ=k)/mbl Weight of creatine ghosphate consumed =
Answers
Creatine phosphate cannot be a universal energy carrier molecule in the human body as it is an unstable molecule and would break down quickly. However, assuming that it was a universal energy carrier molecule, the weight of creatine phosphate that would need to be consumed each day by a typical adult human if creatine phosphate could not be recycled is 186.9 g.
The hydrolysis reaction of creatine phosphate is as follows: Creatine phosphate + H2O → Creatine + PiΔG∗ is the standard free energy and equals -43.3 kJ/mol.
The standard free energy equation is as follows:ΔG∗ = ΔH∗ − TΔS∗
Where, ΔH∗ = -10.3 kJ/mol (standard enthalpy change), ΔS∗ = -31.0 J/mol· K (standard entropy change), and T = 310 K (temperature).
So,ΔG∗ = -10.3 kJ/mol - (310 K) (-31.0 J/mol·K/1000 J/kJ) = -37.5 kJ/mol.
The free energy released by the hydrolysis of one mole of creatine phosphate is 37.5 kJ, which is equal to the amount of free energy needed to synthesize 1 mole of ATP from ADP and Pi.1 mole of ATP has a weight of approximately 500 g/mol, while 1 mole of creatine phosphate has a weight of approximately 211 g/mol.
If the recycling of creatine phosphate were not possible, an average adult human would need to consume approximately 186.9 grams of creatine phosphate daily.
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Proprioception is a subconscious level sensory input to the brain, which pathways is most likely involved.
Answers
Proprioceptive and discriminative touch information from the body is carried and processed by the posterior (dorsal) column - medial lemniscal pathway.
In which nerves does proprioception occur?Numerous large proprioceptive fibres (12–16 micrometres) are transported to the central nervous system via the cranial nerves III, IV, and VI. The intrafusal muscle fibres in the spindles are innervated by numerous little y-range (2–6 micron) fibres found in these nerves.
Which sensors contribute to proprioception?The word "proprioception" has Latin roots and means "unconscious awareness of movement." It enables the body to adjust its position for the best possible locomotion. Internal sensors, including the muscle spindle stretch receptor and the Golgi tendon organ, perform it.
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Presence of flagella type of protist
Answers
Answer:
Explanation:
yes
which level of protein structure ultimately dictates the final, three-dimensional fold of a protein? primary structure secondary structure tertiary structure quaternary structure
Answers
The level of protein structure ultimately dictates the final, three-dimensional fold of a protein is a quaternary structure.
Out of all of these many kinds of protein structures, the quaternary structure of protein is the only one that has protein folds in three dimensions. It operates as a single functional unit despite being composed of an aggregation of two or more polypeptide chains and having a multimer structure.
A protein's quaternary structure is formed when several protein chains or subunits are packed together in a dense configuration. This type of arrangement is called a superstructure. Each of the subunits possesses its very own primary structure, as well as secondary and tertiary structures. Hydrogen bonds and van der Waals forces, which act between nonpolar side chains, are responsible for keeping the subunits together.
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All organelles float around in the _________________.
Answers
Answer:
The answer is cytoplasm.
cytoplasm
Explanation:
because its in the cell and its the main part of everything floating
The ___, ___ & ___ systems all excrete waste materials from the body.
Whick 3 body systems fill in the blanks?
Answers
The urinary system, digestive system, and respiratory system all excrete waste materials from the body.
What is the function of the urinary system?The urinary system processes and expels waste products from your bloodstream as well as maintaining a balance of water and electrolytes in the body.
Additionally, it is the responsibility of the digestive system to rid the body of undigested food and other by-products by expelling them as feces.
Lastly, the respiratory system is tasked with eliminating carbon dioxide - a product of the metabolic process - from circulation by exhaling it from the body.
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Help please with a cherry on top
Answers
Answer:
text 1 - while we may know what's coming ahead of time, weather remains unpredictable
text 2 - the coastal regions experience the most damage...
text 3 - modern technology utilises energy to predict...
text 4 - hurricanes are intensely powerful storms that are only growing more intense
text 5 - meteorologists can make predictions of hurricane movement...
during which phase of mitosis are the sister chromatids separated and consequently become daughter chromosomes
Answers
The phase of mitosis during which the sister chromatids are separated and become daughter chromosomes is called Anaphase.
Anaphase is the fourth stage of mitosis, following the metaphase, in which the chromosomes are aligned at the metaphase plate. The centromeres hold together the chromatids, and spindle fibers attach to the centromeres in the anaphase.
During the anaphase, spindle fibers shorten and start to pull the chromatids of each chromosome apart, making the sister chromatids move toward opposite poles of the cell. At the same time, the cell elongates, and other spindle fibers lengthen, pushing the poles away from each other.
Therefore, the sister chromatids are separated and start moving to opposite poles to become the daughter chromosomes.
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Describe the differences within the two lines in the graph; what does the information on the graph mean?
Answers
Answer: If you understand me that grows represent the energy flow because look at the purple and look at the green line don't worry about the orange line You see how the purple go up and then plummet the green line go straight and then go up and go down just a little Hope it help G
Explanation:
Cytochrome C is a protein that assists in cellular metabolism. Is it identical to all other cytochrome c in each species in which it is found?
Answers
In healthy cells, cytochrome c (Cyst c) is found in the intermembrane/intercriteria regions of the mitochondria, where it interacts with cardiolipin and serves as an electron shuttle in the respiratory chain (CL).
Throughout many domains of life, there are proteins that include mitochondrial-type cytochrome c domains, which are described here as protein domains with the mitochondrial cytochrome c structure. These proteins are crucial for many different metabolic pathways.
The mitochondria are where cytochrome c is found in normal circumstances. The non-inflammatory process of apoptosis is induced when cytochrome c is released into the cytoplasm, but it may cause inflammation if it is translocated into the extracellular space.
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Match each characteristic with the correct animal group.
1. fish
gills, then lungs
2. amphibians
scales and shells
3. reptiles
feed milk to young
4. birds
most can fly
5. mammals
scales and gills
Answers
Answer:
1. fish
scales and gills
2.amphibians
gills then lungs
3.reptiles
scales and shells
4. birds
most can fly
5. feed milk to Young ones
1. What do you predict Earth's interior is like? How do its rocks compare to rocks on the surface? Cite evidence that supports your prediction.
Answers
Answer:
Volcanoes, geysers, and hot springs all provide clues about Earth's interior. They also show one of the ways that Earth's layers interact with each other.
Explanation:
Each of the following hormones is an amino acid derivative EXCEPT one. Identify the exception.
A) epinephrine
B) norepinephrine
C) thyroid hormone
D) thyroid-stimulating hormone
E) melatonin
Answers
The exception is D) thyroid-stimulating hormone. Thyroid-stimulating hormone (TSH) is a glycoprotein hormone produced and secreted by the anterior pituitary gland, whereas the other hormones listed are all amino acid derivatives.
Epinephrine and norepinephrine are catecholamines produced by the adrenal gland, while thyroid hormone is produced by the thyroid gland. Melatonin is produced by the pineal gland. Amino acid derivative hormones are synthesized from amino acids such as tyrosine and tryptophan, whereas glycoprotein hormones are composed of protein subunits and carbohydrate chains.
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the higher the luminosity (intrinsic brightness) a cepheid variable is,
Answers
The higher the luminosity of a cepheid variable, the longer its period of variation. This is due to the relationship between luminosity and pulsation period known as the period-luminosity relationship.
Cepheid variables with higher luminosities have longer periods because their greater mass causes them to pulse more slowly. This relationship was discovered by Henrietta Swan Leavitt in 1912, and it has become a fundamental tool for astronomers to measure distances to objects in space. By observing the period of variation of a cepheid variable, astronomers can determine its intrinsic brightness and use this to calculate the distance to the object.
Therefore, understanding the relationship between luminosity and pulsation period in cepheid variables is crucial in the study of the size and scale of the universe.
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