Which definition is the best for “semipermeable membrane”?
It is a barrier that prevents materials from moving from one side to the other.
It is a barrier that allows materials to move freely from one side to the other.
It is a barrier with tiny openings that let some, but not all, materials pass through.
It is a barrier that helps materials move from one side to the other.

Answers

Answer 1

Answer:

C

Explanation:

Semi means partly

permeable means allowing liquids or gases to pass through it

Semipermeable means allowing some, but not all, liquids or gases to pass through it.

Answer 2

Answer:

c) It is a barrier with tiny openings that let some, but not all, materials pass through.

Explanation:

The prefix "semi-" means "some; partially". "Permeable" means "allow to pass through". Using your knowledge of the purpose of the membrane and the meaning of the word "semi-permeable", you would use context to come to the conclusion that the correct answer is c) It is a barrier with tiny openings that let some, but not all, materials pass through.


Related Questions

After a check-up, Josephine's doctor told her that she had mild anosmia and that she can only distinguish about two thirds of the smells that most adults can.

Answers

Answer:

Yes.

Explanation:

Yes, she can only distinguish about two thirds of the smells because of the mild anosmia while on the other hand, if she has full anosmia she loss the ability of smell. Mild anosmia is the disease which takes half or some part of the ability but in the case of complete or full anosmia, the patient has lost the ability to smell completely so that's why mild anosmia enable her to distinguish about two thirds of the smells as compared to full loss of smell ability.

Why does deposition typically occur on the inside of the curve of a meandering stream?

1 . Water velocity decreases
2. Stream gradient increases
3. Water is deeper
4. Stream is narrower

Answers

Answer:

water velocity decreases

Explanation:

Sediment deposition will occur along the inner meander bends where the velocity is low.

Which of the following breaks food down into energy that the body can then use? OA. Enzymes OB. Hormones OC. Lymphocytes OD. Neurons

Answers

Answer:

Enzymes

Explanation:

Enzymes are proteins that act as biological catalysts, which speed up chemical reactions, to help support life. These enzymes help to perform important tasks such as breaking foods down into energy that the body can use.

Hope this helps :)

Hi,

Which of the following breaks food down into energy that the body can then use?

Answer:

OA. Enzymes

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- Hormones regulates our Body ;

- Lympocytes are form of White blood cells ;

- Neurons make up our whole nervous system.

anyone please delete my last question In which there is a pic please help


what is photosynthesis??​

Answers

To sum it up it’s a process in which plants go through to create their own food!

Two lizards with different coloring exist within the same ecosystem. One lives in the trees, and the other prefers hiding among rocks. They are separate species because
they behave differently
Othey have different characteristics
Othey cannot successfully reproduce
Othey exist within the same ecosystem

Answers

They are separate species because they have different characteristics.
Which means their adaptation methods will be different.

Natural selection is that the process through which populations of living organisms adapt and change.

What are the adaptations behavior in organisms?

Many animals are well adapted to biotic and abiotic conditions due to behavioral, physiological, or structural adaptations that increase their chances of survival and reproduction.

Behavioral - responses made by an organism that help it to survive/reproduce.

.

Physiological - a bodily process that helps an organism to survive/reproduce.

Structural - a feature of an organism’s body that helps it to survive/reproduce.

Thus, we can conclude that the correct option is (b).

They are separate species because they cannot successfully reproduce.

which means they have different adaptation methods.

You  can learn more about adaptation methods here:

https://brainly.com/question/8365237

#SPJ2

Which is the structure labeled a?

Answers

Answer:

=A substance.

.............

) An allosteric interaction between a ligand and a protein is one in which: (3 pts) A) binding of a molecule to a binding site affects binding of additional molecules to the same site. B) binding of a molecule to a binding site affects binding properties of another site on the protein. C) binding of the ligand to the protein is covalent. D) multiple molecules of the same ligand can bind to the same binding site. E) two different ligands can bind to the same binding site.

Answers

Answer:

B) binding of a molecule to a binding site affects the binding properties of another site on the protein.

Explanation:

In an allosteric interaction between a protein and a ligand, the ligand binds to a site in the protein. As a result, there is a change in the properties of other active sites on the protein. These active-site changes may or may not allow the protein to bind to other molecules. There is a change in the protein that affects the affinity of the active site for other molecules. The affinity on the active site increases if the protein binds to an activator and decreases if the protein binds to an inhibitor molecule.

In cell culture experiments, purified B cells expressing IgM can be induced to switch to producing IgE by stimulating them with an antibody to CD40 (a stimulatory antibody) plus the cytokine IL-4. In an individual undergoing an immune response, these signals would normally be provided by:

Answers

Answer:

TFH cells in the germinal center

Explanation:

The Tfh cells, present in the germinal center, are responsible for maturing and stimulating the class change of immunoglobulins (such as the change from IgM to IgE). This change could stimulate the new classes of immunoglobulins to act with stimulating antibodies to produce an immune response.

It is important to point out that the germinal center is the activated point of a lymphoid follicle that contains B and T lymphocytes, which act in the memory of the cells of the immune system.

Muốn có vitamin D tránh loãng xương, còi xương ta cần phải là gì:

Answers

Answer:

Phơi nắng vào buổi sáng.

Answer:

chúng ta phải bổ sung thêm vitamin D qua các sản phẩm như lòng đỏ trứng, cá, sữa.

Explanation:

What is responsible for the red tide phenomenon? It is a phenomenon that usually coincides with storm surges; the name comes from the red kelp that often washes ashore as a result of rough weather. Red tide occurs in patches of water where certain species of dinoflagellates flourish. They are so abundant that the water becomes discolored and takes on a red hue. Red tides occur once a year and in accordance with the lunar cycle. The water appears red as a result of reduced levels of photosynthetic pigmen

Answers

Answer:

Red tide occurs in patches of water where certain species of dinoflagellates flourish.

Explanation:  

Red tides refer to the noticeable microalgae proliferation that can be recognized for being a big spot in the sea of a characteristic coloration. This phenomenon is caused by two microalgae groups: diatoms and dinoflagellates, both part of phytoplankton.

Red tides occur when certain environmental factors -such as temperature, light, nutrients availability, ph, etcetera- favor the overproduction of these organisms. These species produce toxins that turn to be dangerous for other animal species that feed on them.

Because these microorganisms produce pigments, their accumulation on the sea surface can be noticed as reddish, brown, or greenish color spots of variable extension.

One gene pair can influence other gene pairs, with their combined activities producing some effect on phenotype; this called ________________. In Labrador retrievers, one gene pair codes for the quantity of melanin produced while another codes for melanin deposition. Still another gene locus determines whether melanin will be produced at all--lack of any produces an albino (recessive).

Answers

Answer:

Epistasis

Explanation:

Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants

In Genetics, a gene pair has the ability to influence other gene pairs based on their combined activities which produces some effect on phenotype; this is called epistasis.

Which macromolecule provides a person with most of the energy that is needed for daily activities?
carbohydrates
lipids
nucleic acids
proteins

Answers

Carbohydrates is the answer

Answer:

Carbohydrates

Explanation:

the only possible answer

help can be needed please!

Answers

The correct answer is A. Plastic trash in the neighborhood park.

Explanation

The tragedy of the commons was a term used by Garrett Hardin to describe a situation in which several individuals motivated by personal interests destroy or undermine a common good even though none of them is convenient for this. Outcome. According to the above, the correct answer is A. "Plastic trash in the neighborhood park", because this describes the result of an individual action of several people, which is to throw garbage in the park and that as a result causes general damage in the community.

anyone please help me​

Answers

Answer:

b b

B Bb Bb

b bb bb

if the brown mail had been BB then all offspring would have been Bb and all brown however is the male is Bb as above and you perform a test cross 50% of all Offspring should have the bb genotype and a white phenotype a testcross to a heterozygous individual should always yield about a one-to-one ratio of the dominant or recessive phenotype so both of the genotypic and phenotypic ratios here are 50/50

Hello

Would you like to be my friend? Can i please get your intro?

Myself Ojasvi

Class 8, 13

India

What would happen if there were no condensation stage in the water cycle?

Answers

Answer:

Choice A. Water could not convert from a gas to a liquid.

Explanation:

Condensation is the process of cold humid air (gas) coming into contact with a surface and collects water droplets (liquid) on it.

Answer:

A

Explanation:

how can so much DNA could fit inside a bacterial cell.

Answers

Answer:

The reason so much DNA could fit inside a bacterial is because the DNA are double-stranded, looped, coiled, and foleed into the cell. The DNA is tightly fitted around the nucleus.

Explanation:

Have a great summer :)

Why are
there no gram-positive archaea species, but there are gram-positive
bacteria species?

Answers

Answer:

There are no gram positive archaea because archaea lack peptidoglycan in their cell walls, meaning that the archaeic cell walls are more similar to gram negative bacterial walls, although they do show a greater variety of cell wall types.

EXPLANATION

Bacteria can be divided into gram-positive bacteria and gram-negative bacteria because of their cell wall composition.   The cell wall of gram-positive bacteria is made up of peptidoglycan which retains crystal violet stain and appears purple in color under microscope. The cell wall of gram-negative bacteria has an outer layer of lipopolysaccharide which do not retain crystal violet color and appear pink.   The cell wall of archaea is not made up of peptidoglycan but is made up of pseudo-peptidoglycan, therefore, no gram-positive archaea species is present on the earth.

Please list answers below

Answers

False and clean your computer

b) Describe two measures each to conserve natural vegetation and wildlife, Class 8 - Geography - Unit 1 betwen 90to100 words​

Answers

Answer:

Afforestation and national sanctuaries are two measures each to conserve natural vegetation and wildlife.

Explanation:

The natural vegetation and wildlife restoration is one of the main concerns that are essential for the development and growth of a country's biodiversity. Due to human land-use changes and migration of people, from one place to another with their cattle, lands are becoming deserted and grassland and forest land are declining.  

So, we need to plant more trees that act as the natural habitat for the wildlife and preserve and conserve them in parks and sanctuaries which will help reduce the impacts of global warming and climate change. We should not kill any animal.We should decrease the use of plastics.

what do prokaryotes and eukaryotes have in common?

answers:
A) they both have a nuclear membrane
B) they both have a golgi apparatus
C) They both have chloroplasts
D) they both have cell membranes ​

Answers

C. They both have cell membrane

Three complementary base units known as a(n)
ensure that the correct amino acid is delivered.

Answers

Answer:

Codon

Explanation:

Why would AZT be a poor candidate to inhibit SARS-CoV2?

Answers

Answer:

Due to its less effectiveness.

Explanation:

Azithromycin would be a poor candidate to inhibit SARS-CoV2 due to its less effectiveness. Azithromycin has no effect on the virus because this antibiotic can only attack on the structure of bacteria. Azithromycin is an antibiotic which is used for the treatment of a number of bacterial infections not viruses. They are not designed to destroy the structure of virus but for the bacteria.

The graphs below show the change in temperature and salinity of a region of ocean as an instrument is lowered below the surface. Depth is measured in kilometers below the surface, temperature in degrees Celsius, and salinity in parts per thousand.



What is the most valid conclusion regarding ocean salinity based on the data?

A. Ocean salinity is not related to water temperature.
B. Ocean salinity changes with depth at a steady rate throughout the entire water column.
C. Ocean salinity increases as ocean temperature decreases.
D. Ocean salinity is more stable at higher temperatures than at lower temperatures.

Answers

Answer:

B. Ocean salinity changes with depth at a steady rate throughout the entire water column.

Explanation:

The data in the graph shows that Ocean salinity changes with the depth at a steady rate throughout the entire water column because when the water table rises it brings salts with them at the top  so there is high concentration of salts in the upper layers as compared to other layers and going deep in the soil the concentration of salts becomes very low due to upper movement of salts.

Answer:

B. Ocean salinity changes with depth at a steady rate throughout the entire water column.

Explanation:

flvs?? :)

The four types of nitrogen bases of DNA nucleotides are
,
, guanine, and cytosine.

Answers

Answer:

adenine (A), thymine (T), cytosine (C), and guanine (G).

Explanation:

I took 6 years of a biomedical academy

Answer:

adenine (A, thymine (T)......you don't read your book ......first you read your book ....plz for your bright future...

describe the role of enzymes in seeds germination​

Answers

During germination, seeds use sugars and other molecules as a substrate for respiration. α-amylase and β-amylase are involved in degradation of endosperm starch. Starch hydrolysis into glucose is catalyzed by action of α- and β-amylases, debranching enzyme and α-glucosidases (maltase)

Give an summary of the process occuring in the diagram.

What process is this?
What are the jobs of rRNA, mRNA and tRNA?
What is the end product of the process?
Answer the question using complete sentences and the diagram.

Answers

Answer:

- I believe transcription.

-  Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes (the structures in which protein synthesis takes place); transfer RNA (tRNA) molecules carry amino acids to the ribosomes during protein development.

- the end product is RNA.

Explanation:

I hope this helps! (pls mark brainliest) :)

According to the ESRT, the rate of temperature increases below the Earth's surface is greatest between depths of

Answers

Answer:

Between depths of tectonic plate boundaries and the outer core.

Explanation:

The rate of temperature increases below the Earth's surface is greatest between depths of tectonic plate boundaries and the outer core.  At the depth, some of the heat comes from the Earth's core while most of the heat comes from decay of radioactive elements, mainly uranium, thorium and potassium that is located in rocks of the crust. So we can say that the the increase in temperature with depth varies with the chemical composition and age of the rocks.

Fill in the genotypes for each individual in the pedigree below. Treat “H” as the dominant allele and “h” as the recessive allele. *Hint* start by answering these questions: is the trait likely to be X-linked? Is the shaded dominant or recessive?
List your answers in numerical order. (7 points)

Answers

Answer:

B

Explanation:

edge2021

Tania looks at several different multivitamins in the store and notes that there are many different formulations with
varying amounts of several types of vitamins. She would like to choose a brand that only has the essential vitamins
that humans need to consume.
What are the vitamins that Tania should verify are in the product that she purchases?
O vitamins A, B, C, D, E, and K
O vitamins A, B, C, E, and K
O vitamins A, B, C, D, and E
O vitamins A, B, C, D, E, F, and K

Answers

The answer is A.

There are 13 essential vitamins. Vitamins A, the multiple B vitamins, C, D, E, and K.

What is the scientific term used for the chemical reaction when a fuel burns? (Hint: your answer should be one word.)

Answers

Answer:

Combustion

Explanation:

Combustion is the chemical reaction that happens when fuel burns.

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find the value of x when 6 - 4x +6x - 8x +6 , what is the vaule of x ? Caleb decreases a number by 6 and then multiplies it by 2. He gets the same answer aswhen he subtracts 8 from the original number. What is the number?please answer!! Which of the following words is not an accessory? How do these trade routes reflect the demand for slaves? (5 points)The routes show that demand for domestic slaves in Europe was high.The routes show that most of the slaves remained in Africa.The routes show that most of the slaves were going to the colonies in the Americas.The routes show that demand for slaves by the various colonial powers was low. Given the function f(x) = x2 - x + 7, find each of the following.f(6)=f(- 9)=f(0) A painter uses 15 gallons of interior paint to cover 300 square yards of wall and ceiling space. On a different job, he uses 8 gallons to cover 160 square yards. No paint is left over on either job. How many gallons of paint are needed to cover 1 square yard? An object is released from height of 17m. The object will hit the ground approximately in ) 3) What is the difference between explicit and recursive forms of sequences? China has become a global financial power. For evidence, look no farther than the Shanghai Tower. When finished, it will stand 2,074 feet (632 meters) tall. The tower will be China's tallest building. Only the Burj Khalifa in Dubai will be taller. The Shanghai Tower points to a change in world economics. Fewer skyscrapers are constructed in America nowpartly because the economy has weakened. China can also afford environmental innovations in its tallest skyscraper. Wind turbines on the roof will produce power. Rainwater will heat and cool the building. The outside glass will let in sunlight. This will help the building's nine sky gardens grow.Do It!Building skyscrapers is a sign of economic _________.Press enter to interact with the item, and press tab button or down arrow until reaching the Submit button once the item is selectedA strengthB reactionC protectionD relief Solve the system of linear equations by substitution x=5y+2 and x-4y=5 find the product of 2317 and 9 A tree cast a shadow 21 meters long The angle of elevation for the sun is 51 degrees What is the height of the tree? What are Todds symptoms from the documentary back from madness the struggle for sanity? Suppose you write an essay that are used for the transition to 100% online news reporting? Which statement would work as a counter claim to address in your essay?A. Most newspaper already work hard to move readers to their electronics additions.B. There will always be a market for print newspapers since not everyone has access to technology.C. Electronic media is more effective for getting the news out since it can be updated constantly.D. People enjoy hearing devices that give them access to News content whenever they want. B. Direction: Rewrite the each of the following using EXPONENTS.Example: Two to the seventh power =2 7 7 7 = 75) six with the exponent6) 10 10 107) 3 3 3 3 Why were members of the mob considered extremely dangerous? what is midsummer night's dream play about? In which islands of the Greater Antilles were BOTH Kalinagos and Tainos found at the end of the fifteenth century? A) Cuba B) JamaicaC) Hispaniola D)Puerto Rico Use distribution property to this expression 6( 5 q) what is the answer plzzzzzz helpppppp meeeee find the value of n n+150+7+100=200+50+27