Explain how it is possible for nutrients to be transported to the cells of a flatworm with no circulatory system.
Answer:
Flatworms are beings that do not have a heart, veins, arteries, capillaries, hemolymph, or some type of circulatory fluid. Their circulation occurs between cells or intercellularly and they are responsible for transporting substances by diffusion from cell to cell.
Explanation:
Flatworms are considered multicellular eukaryotic organisms. This implies that in their cells they have a cellular nucleus, in which the DNA is contained, structuring the chromosomes. Likewise, they are made up of several types of cells, each one specialized in a specific function. They lack a structured circulatory system as such. Because of this they do not have specialized structures such as a heart or blood vessels, however, the circulation of certain substances is established between their cells. This is done thanks to the diffusion process. Substances pass from one cell to another through this process.This does not apply to all flatworms, since in some species of bog and digenae there is a certain organization and some very small conducting vessels known as the endolymphatic system, the which forms a kind of plexus in the parenchyma.It should also be noted that some species do not even have a digestive system, being the digestive tract the one in charge of digestive functions and the distribution of the nutrients they receive.
Is there a scientific discovery in today’s world that has been overshadowed by popular belief? Explain.
What role do you think popular belief has on scientific discoveries?
GIVING BRAINLIEST TO THE PERSON WHO HELPS ME!
Answer: The history of science is also a history of people resisting new discoveries that conflict with conventional wisdom.
Explanation: When Galileo promoted Copernicus’ theory that the Earth revolves around the sun – counter to church doctrine about the Earth being the center of the universe – he wound up condemned by the Roman Inquisition in 1633. Charles Darwin’s theory of evolution – that new species develop as a result of natural selection on inherited traits – ran into opposition because it contradicted long-held scientific, political and religious beliefs. Alfred Wegener’s 1912 proposal that Earth’s continents move relative to each other – the theory of continental drift – was rejected for decades, in part because scientists held fast to the traditional theories they’d spent careers developing.
(sorry if i'm wrong )
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The picture shows a 3-D model of a virus called a bacteriophage. Bacteriophages can infect In what way are the bactenophage and E. coli alike? F. They contain antibodies. che produce by tutosis. H They have idenbekl genomes, The lack membrane-bound organelles. Students, dawanywhere on this slide!
Bacteriophage and E.coli are alike in the sense that they both lack membrane-bound organelles.
What are bacteriophage?Viruses that infect bacteria are called bacteriophage. The words bacteriophage mean "bacteria eater". Bacteriophages take over the machinery of host cells to produce copies of themselves and then destroy the host cell in the process.
Bacteriophages are composed of a supercoiled nucleic acid which is surrounded by a protein capsid.
A bacteriophage adheres to the surface the susceptible bacteria and injects its genetic material. This way they occupy the genetic machinery of the host and produce several copies of their own nucleic acid and also the protein capsid to surround it.
The result is the lysis of bacterial cell and release of thousands of bacteriophage viruses which are capable of infecting more bacteria in the same manner.
Bacteriophage are acellular structures lacking any membrane bound cell organelles. E.coli is a kind of prokaryotic bacteria which also lack membrane bound organelles.
Therefore, the correct option is D.
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explain the ecosystem of Mountain region
Answer:
The area represents an important mountain ecosystem, linking the lowlands with the Annapurna Himalaya. The region is home to significant biological, cultural, and religious diversity, as well as abundant natural beauty. Globally, mountain people tend to be among the world's poorest and most marginalized populations.
what are areobial habitats ?
Answer:
Man made land
Explanation:
A areobial habitat is a land made object made by man.
Answer both thanks !!
Answer:
16: D edit it ment to be d
17: B
Explanation:
For 16 if you look at the chart you can calculate by seeing what letters intersect which was D.
For 17 it's common sense if you do research.
Together the entire process of aerobic respiration (Glycolysis, Krebs
Cycle, and Electron Transport Chain) produces about
Blank molecules of ATP
Answer:
ALL the aerobic respiration produces about 36 ATP molecules.
Explanation:
Which is a cofactor? (1 point)
O CO2
O ATP
O H20
O NAD
Answer:
O H20
Explanation:
because I get a 100 on the text
Cellular respiration involves a reaction between glucose and oxygen to form_____
1: carbon dioxide
2: water
3: all of these
4: energy
Answer:
3. All of these
Explanation:
When the reaction of cellular respiration occurs, carbon dioxide and water is created while energy gets released.
Answer:
3: all of these
Explanation:
They actually form ATP, which is essentially energy. Byproducts are water and carbon dioxide. I would say all of these answers are true! Remember though, ATP (energy) is the main product while water and carbon dioxide are byproducts.
Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation:
( )Na2HPO4 → ( )Na4P2O7 + ( )H2O
Answer: 2,1,1
Explanation:
Answer:
2,1,1
Explanation: Hope this helps
Name a storage protein in our bodies.
Explain the function of this storage protein in our bodies.
Where is this storage protein found?
please help
Answer:
Storage proteins serve as biological reserves of metal ions and amino acids, used by organisms. They are found in plant seeds, egg whites, and milk. Ferritin is an example of a storage protein that stores iron. Iron is a component of heme, which is contained in the transport protein, hemoglobin and in cytochromes.
Explanation:
Hope this helps.
- Which molecule synthesized by plants is a major source of chemical energy for
cellular processes in both plants and animals?
Answer:
I think Glucose
Explanation:
what happens during mRNA processing?
What's the biggest animal in the world?
A plant has a genetic defect that causes its leaves to dry out, becoming brittle and prone to injuries. The genetic defect most likely causes each leaf to lack a________
I need help. I am currently taking the test in Edg. If u are correct, I will mark u Brainliest! :)
Answer:
sufficient root system that can support the plant's growth
Answer:
The answer is a: cuticle
Explanation:
The cuticle is a waxy, water-repellent layer found on the outer covering of plants that prevents injury and water loss.
A Punnett square showing a cross between two cats is shown below.
HH x hh
h
h
H
H
In cats, short hair (H) is dominant to long hair (h).
Using the punnett square above, what is the probability the offspring from this cross
would have long hair (hh)?
0/4
O 1/4
2/4
Answer:
0/4
Explanation:
All offspring will have the presence of the dominant trait in their genes, which will make them have short hair.
They will all have the geneotype Hh.
They would need hh to have long hair.
Mutations leading to changes that can be inherited by the next generation have to be introduced at the _______ level.
Answer:
same
Explanation:
What is the meaning of the phrase rising star? working harder than others more popular than others showing superiority in strength growing quickly in importance
Answer: I think the answer is growing quickly in importance.
Hope this helps :)
Explanation:
What is the material that allows plants to capture energy from the sun? How many different types of this material are there? (site 1)
Answer: The molecules of chlorophyll contained in the chloroplasts absorb energy in the form of light from the sun. This is the process called Photosynthesis, by which plants convert energy from the sun. It is the process that allows plants to create organic molecules that they use as fuel.
Explanation:
During the process of photosynthesis, plants capture light energy and use it to convert water, carbon dioxide, and minerals into oxygen (released into the air) and glucose (stored in the plant and used as food). The photosynthesis process occurs in all plants and algae, as well as in some bacteria species.
why is the interaction of the respiratory and circulatory systems necessary for the frog survival please refer to oxygen and carbon dioxide?
In the circulatory system there is the distribution of oxygen to the body and in the respiratory system the gas exchange.
How is the respiratory and circulatory system of amphibians?Amphibians have three structures for breathing:
The lungsThe mucous membranes of the pharynx and mouthand The skin.The lungs are made up of two bags with no internal division. When still in the larval stage, they breathe through gills.
How does the circulatory system of amphibians work?Amphibians have a dual circulation, meaning the blood passes through the heart twice to complete the cycle. The blood reaches the heart, travels towards the lungs, returns to the heart and only then is carried to the body.
Whit this information, we can conclude that In the circulatory system there is the distribution of oxygen to the body and in the respiratory system the gas exchange.
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Which of the following is a natural resource that could be used up someday?
OA. sunlight
ОВ.
gas
OC. wind
D.
water
Answer:
gas
Explanation:
gas is a limited source that one day we might run out of so that's why tesla made cars that run on electricity
In an investigation, students determined the average rate of movement of
gill covers of a species of freshwater fish at different temperatures. The
results are shown in the data table below. Which labeled axes should be
used to graph the relationship between the two variables? *
DATA TABLE
Average Rate
Number Temperature of Movement of Gill
Groupſ of Fish (°C) Covers per Minute
1 5
10
15
2. 6
15
3 4
18
4 7
20
5
6
23
60
6
4
25
57
7 4
27
25
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Answer:
b because you want to keep track of the number of fish and temperature of the water
If a virus were to infect the rat in the food web pictured below, which organism(s) would be most impacted?
Answer:
Eagle
Explanation:
During metamorphosis, what structures do tadpoles lose?
a.
eyes
b.
arms
c.
gills
d.
legs
Answer:
C. They lose their gills
Explanation:
They lose their gills but grow lungs
List and describe the roles of the three different types of RNA involved in transcription and translation.
mRNA(messanger RNA)-results from transcription and contains the codons for protein synthesis .mRNA is synthesized by an enzyme called RNA-polymerase. It plays an important role in translation because it contains the codons that pair with anticodons from tRNA
t-RNA(transffer RNA)-carries the amino acids to the protein synthesis site(ribosome) and contains the anticodon that pairs with the codon from mRNA during translation
r-RNA(ribosomal RNA)- keeps the two ribosomal units together for the translation to take place
The three different types of RNA that are involved are:
mRNA(messenger)tRNA(transfer)rRNA(ribosomal)RNA'sThree major types of RNA are mRNA, or messenger RNA,which serve as temporary copies of the information found in DNA; rRNA, or ribosomal RNA,which serve as structural components of protein-making structures known as ribosomes; and finally, tRNA, or transfer RNA, that ferry amino acids to the ribosome to be assembled.
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Automatic, or simple reflex, behavior is commonly referred to as
a. conditioned response.
b. spatial motivation.
c. unconditioned response.
d. operant conditioning.
I need help with this question plz and thank you
Answer:
B
Explanation:
When I read this, B just fits best with what's happening. If I'm wrong, I'm so sorry! Have a lovely day.
ANSWER BOTH QUICKLY AND ACCURATLY
How are currents in the Pacific Ocean affected by El Niño?
A. Currents travel more slowly.
B. Rip currents are frequently formed.
C. All currents become deep ocean currents.
D. Warm water moves to the east instead of to the west.
Ocean circulation is the large-scale movement of water in the ocean. It involves the transport of heat through convection, which is the movement of heat through liquids and gases.
Which statement describes how convection moves heat in the ocean during non-El Niño (normal) years?
A. Convection moves heat toward the west.
B. Convection moves heat toward the east.
C. Convection moves heat toward the north.
D. Convection moves heat toward the south.
Answer:
The answer for the second question is: A. Convection moves heat toward the west.
What happens to groundwater when the rate of infiltration is less than the rate of water being pumped out of the ground? a. The water table is unchanged. b. The water table increases. c. The water table lowers. d. The water table is unaffected by infiltration.
Answer:
the answer is The water table lowers.
When the rate of infiltration is less than the rate of water being pumped out of the ground, the water table lowers. Thus, the correct option for this question is C.
What is a Water table?A water table may be defined as a boundary that lies below the ground and between the soil surface and the area where groundwater saturates spaces between sediments and cracks in the rock. The water that percolates down to the earth constitutes the water table.
According to the context of this question, if the rate of infiltration is less that means the percolated water is significantly less as compared to the water that is taken or being pumped out of the ground. In a more simple sense, water collected in the ground is less than the water taken from the ground. Due to this, the water table declines.
Therefore, when the rate of infiltration is less than the rate of water being pumped out of the ground, the water table lowers. Thus, the correct option for this question is C.
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If an object with 80 j of gravitational potential energy is raised twice as high, what would be its new gravitational potential energy?
a. 100 j
b. 160 j
c. Can't be calculated without
knowing its weight.
The gravitational potential energy of an object is directly proportional to its height above the zero position, a doubling of the height will result in a doubling of the gravitational potential energy. A tripling of the height will result in a tripling of the gravitational potential energy. And like this.
So, the answer is b. 160J