6. One of the main functions of the semi-permeable cell membrane is to maintain
homeostasis for the cell. Semi-permeable means that only some molecules are
allowed to cross the membrane and others are not.
What molecule enables large molecules to cross the membrane?
-carbohydrates
-proteins
-nuclear acids
-lipids

Answers

Answer 1

Answer:

proteins

Explanation:

im not sure tho, hope it helps


Related Questions

Why is it an important property for water to be less dense as a solid?​

Answers

Answer:

Water has a unique density. It is less dense as a solid than it is as a liquid, which is why ice floats on top of liquid water.

Explanation:

Answer: Water’s lower density in its solid form is due to the way hydrogen bonds are oriented as it freezes: the water molecules are pushed farther apart compared to liquid water. With most other liquids, solidification when the temperature drops includes the lowering of kinetic energy between molecules, allowing them to pack even more tightly than in liquid form and giving the solid a greater density than the liquid.

The low density of ice, an anomaly, causes it to float at the surface of liquid water, such as an iceberg or the ice cubes in a glass of water. In lakes and ponds, ice forms on the surface of the water creating an insulating barrier that protects the animals and plant life in the pond from freezing. Without this layer of insulating ice, plants and animals living in the pond would freeze in the solid block of ice and could not survive. The detrimental effect of freezing on living organisms is caused by the expansion of ice relative to liquid water. The ice crystals that form upon freezing rupture the delicate membranes essential for the function of living cells, irreversibly damaging them. Cells can only survive freezing if the water in them is temporarily replaced by another liquid like glycerol.

Need help please ASAP !!

Answers

Answer:Bacteria cell

Please actually answer the question i need the answer, i'll give brainliest!!!!

A city is located in an area that has experienced 7.5-magnitude earthquakes in the past.
The city is considering building a new skyscraper.
Use the earthquake magnitude scale to predict the amount and type of damage residents should expect from future earthquakes of similar magnitude.
Then suggest a way to minimize the effects of future earthquakes on the skyscraper.

Answers

According to the scale, residents should expect major damage and the potential for the skyscraper to collapse if a future earthquake were to occur.
Ways to minimize future earthquakes impact on the skyscraper could be using stronger materials, creating better routes to quickly escape should an earthquake occur, and overall a more supported structure that can withstand the earthquakes magnitude.

Explain how the farms upriver were adding to the high nitrate levels. gizmo

Answers

Answer:

Farmers were adding high nitrate levels from many large corn farms along the river. The farmers spray fertilizers that have ammonia and nitrate onto their crops. During the drought, the farmers used extra fertilizer. As rained, the ammonia and nitrate from the fertilizer were washed into the river.

In the pigs produced 10 pounds of feces that contained ammonia and nitrate. The pit is too small to obtain such large amount. When it rained the waste overflowed in to the river.

Explanation:

The drought from the week before and the large rain fall played a large part in the outcome of the annomia and nitrate exposure to water.

The farms upriver were adding to the high nitrate levels. It was because of the excessive use of fertilizers and inadequate waste disposal techniques.

What are agrochemicals?

There are chemicals that are used in agriculture. It includes fertilizers, pesticides, nematicides, insecticides, etc.

How does farm upriver add nitrate?

The farms upriver used to apply agrochemicals, especially the ones rich in nitrate and urea. During fewer water conditions they used to apply more. That used to remain in the soil and washed down to the river along with the rain.

The farms did not use adequate waste disposal measures and hence the wastes rich in nitrogen were washed down to the river.

Hence, these practices increase nitrate levels in the river.

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Do you think that cell types with shorter or longer life spans go through mitosis more often? Explain your answer. PLEASE HELP ASAP

Answers

Cell types which have shorter life spans will go through mitosis more often. This is because whenever the cell dies it will need to be replaced.

What is the classification of virus​

Answers

Answer:

Viruses are classified into 4 groups based on their shape: filamentous, isometric , enveloped, and head and tail.

Many viruses attach to  host cells to facilitate penetration of the cell membrane, allowing their replication inside the cell.

The virus core contains the small single- or double-stranded genome that encodes the proteins that the virus cannot get from a host cell.

Explanation:

not sure if this is what you are looking for

According to the Baltimore classification system, Viruses are classified into seven classes on the basis of their morphology and function.

What is Virus?

A Virus may be defined as a type of microorganism that consists of a nucleic acid molecule in a protein coat and infects cells and may cause disease.

Viruses are classified into seven classes, each of which has its own families of viruses and has differing replication strategies.

Class 1: Double-stranded DNA viruses.

This type of virus usually must enter the host nucleus before it is able to replicate. An Example is Adenoviridae.

Class 2: Single-stranded DNA viruses.

Such types of viruses replicate within the nucleus and pertain highly in vertebrates. An example is Circoviridae.

Class 3: Double-stranded RNA viruses.

Such types of viruses do not depend on host polymerases for replication. An example is Birnaviridae.

Class 4: Single-stranded RNA viruses (positive sense).

Such types of viruses have polycistronic mRNA which is translated into a polyprotein. An example is Flaviviridae.

Class 5: Single-stranded RNA viruses (negative sense).

Such types of viruses must be transcribed by viral polymerases into complementary forms. An example is Filoviridae.

Class 6: Single-stranded RNA viruses (positive sense) that replicate through DNA intermediate.

Such types of viruses use the enzyme reverse transcriptase to convert the positive sense RNA into DNA. An example is Retroviruses.

Class 7: Double-stranded DNA viruses that replicate through a single-stranded RNA intermediate.

Such types of viruses have a double-stranded gapped genome that is subsequently filled into a covalently closed circle that serves as the template for the production of viral mRNA. An example is the Hepatitis B virus.

Therefore, it is well described above.

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Study the diagram of a cell.
Which structures are found in both plant and animal
cells?
Wand X
W and Z
X and Y
Y and Z

Answers

Answer:

W and Z

Explanation:

Answer:BBBBBB

Explanation:

Because I got it right on the asihnement

What does the image above depict?
a. images and fragments from the artist's dreams
b. a ymbolic representation of a German officer
C. symbolic memories of the artist's life
d. the horrors of war

Answers

Answer:

B.  symbolic representation of a German officer

Explanation:

"Portrait of a German Officer is an early 20th century portrait by American modernist painter Marsden Hartley. Done in oil on canvas, the portrait depicts the abstract figure of an Imperial German officer as being composed entirely of military decorations and badges of rank."

The image above depicts  a symbolic representation of a German officer.

Portrait of German officer

The picture in the given image depicts a portrait of a German officer an early 20th century.

The portrait was designed by an American modernist painter Marsden Hartley. Done in oil on canvas, the portrait depicts the abstract figure of an Imperial German officer as being composed entirely of military decorations and badges of rank.

Thus, the image above depicts  a symbolic representation of a German officer.

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I attached the image above ​

Answers

the first one is the third answer and the second one is the first answer


Kate and Sam are using a scanning electron microscope to study photosynthesis in algae. Which is a benefit of this type of microscope compared to
a light microscope?

Answers

Answer:

B. Produces highly magnified images

Explanation:

Trust me

Kate and Sam are using a scanning electron microscope to study photosynthesis in algae, and the benefit of using this type of microscope rather than a light microscope is that the scanning microscope gives clearer details of the process.

What are the benefits of using a microscope?

The microscope gives a better view of the smaller things, and there are different types of microscopes, such as the light microscope, the electron microscope, etc., and other high-quality microscopes that are helpful for the better viewing of the samples. The light microscope has a lower magnification range than the electron microscope, and the species can be better viewed in the electron microscope. Depending on the application, different microscopes should be used, and photosynthesis can be seen better in a scanning microscope than in a light microscope.

Hence, the benefit of using this type of microscope rather than a light microscope is that the scanning microscope gives clearer details of the process.

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If a mother is a carrier of the recessive gene (Xx) for hemophilia and
there is a 25% chance of having a child with hemophilia, what must the
father's genotype be?

Answers

Answer:If she gets the X chromosome with the hemophilia gene she will be a carrier. So a carrier's daughter has a 50% chance of being a carrier. A woman who is a carrier has: a 25% (one in four) chance of having a daughter who is a carrier.

Explanation:

Which describes an old technology and a current technology that can fulfill people’s needs?

emerging technologies

overlapping technologies

obsolete technologies

coexisting technologies

Answers

Answer:

coexisting

Explanation:

Answer:

Coexisting

Explanation:

Science 6th grade digital INB- You dont know what parts of the ground are safe and what parts are thin crusts of soil covering fires or sinkholes. Design a system that can access the area and take measurements that show changes in the fire. (No right or wrong answer just need someone to come up with something and quick.)

Answers

Answer:

Fire detecting Scanner.

Explanation:

Fire detecting Scanner is a system which has the ability to scan the area and tells the changes occurs in the fire inside the earth crust. This scanner collect all information about the area on the basis of which we can take steps to avoid the damage caused by the fire. With the help of this scanner we can tell that which part is safe and which part of the area is dangerous for people.

What attraction holds the nitrogenous bases together within the double helix?
a
deoxyribonucleic acid
b
ribose sugar
c
hydrogen bonds
d
phosphate

Answers

Hydrogen bonds , ddddddd

Which organelle is found in plant cells only? A.7 B.1 C.3 D.6

Answers

It’s a 7 there’s a cell membrane, cytoplasm, nucleus, vacuole, chloroplasts, Mitochondria, and a cell wall. Good luck !

0-7 Why is excess use of fertilizers detrimental for environment?
Q-8 What is a Genetically Modified Crops (GMCs)? Name any one such crop​

Answers

Answer:

Answer of Question 7

Fertilisers are inorganic chemicals which are not easily degraded. Excess use of fertilisers causes environmental pollution as their residual and unused amounts will become pollutants for air, water and soil.

Answer:

Answer of Question 8

Genetically modified crops are crops produced from organisms that have had specific changes introduced into their DNA using the mmethods of genetic engineering

Example

cotton

The condition of ketoacidosis is Select one: a. a potentially fatal buildup of acetoacetate or 3-hydroxybutyrate lowering blood pH. b. due to a lowered production of ketone bodies than is normal. c. the increase in pH of the cells due to ketone body production. d. only found when anaerobic catabolism of fat occurs.

Answers

Answer:

The correct answer is option A ( a potentially fatal buildup of acetoacetate or 3-hydroxybutyrate lowering blood pH.)

Explanation:

Ketoacidosis results in a type of body metabolic state where the urine concentrations are high in ketone bodies, such as acetoacetic acid , 3-hydroxybutyrate. Fatty acids are converted to ketone bodies, resulting in a very high level of ketone bodies which automatically lowers the blood pH.

Ketoacidosis is of different types, Diabetic ketoacidosis, alcoholic ketoacidosis, starvation ketoacidosis. They are all associated with the accumulation of ketone bodies within the bloodstream. The underlying disease  common with ketoacidosis is Diabetes.

Which describes gas exchange in the respiratory system?
A. Gas exchange happens through diffusion.
B. Gas exchange removes oxygen from the body.
C. Gas exchange occurs between the body’s cells and bronchi.
D. Gas exchange protects the body against foreign invaders.

Answers

Answer:

A.

Explanation:

A. Gas exchange happens through diffusion.

Answer:

A

Explanation:

what are 6 hevy metals that can be taken up by plants

Answers

Answer:

Cd, Cr, Cu, Hg, Pb, and Zn

Which molecules are involved in protein synthesis?
ribosomal RNA, transfer RNA, and mutagens
messenger RNA, ribosomal RNA, and transfer RNA
messenger RNA, introns, and ribosomal RNA
transfer RNA, introns, and mutagens

Answers

Messenger RNA, ribosomal RNA, and transfer RNA

Salivary amylase is an enzyme in humans that breaks down starches. What substances would humans have difficulty digesting without this enzyme
Group of answer choices

Answers

Answer:

Carbohydrates

Explanation:

High in fats and very fatty

In the absence of salivary amylase, humans would have difficulty digesting carbohydrates.

What is salivary amylase?

Salivary amylase is produced by the salivary glands located towards the back of our mouth. Salivary amylase is a very small percentage of the total amount of amylase produced by the body.

Most of the amylase in the body is secreted by the pancreas. Salivary amylase is secreted in the saliva. This begins the process of the breakdown of food in the mouth itself.

Salivary amylase breaks down carbohydrates into maltose units which is a disaccharide. The maltose is ultimately broken down into glucose.

Carbohydrates are a very significant portion of the diet of a large percentage of the global population. Various kinds of bread and rice have a large portion of them composed of carbohydrates.

Therefore, in an absence of salivary amylase, humans would have difficulty digesting carbohydrates.

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Helpppp
In the lytic cycle, how does the virus cause
the host cell to die?
By taking over the bacterial cell and making it produce viral DNA
and protein.
By becoming part of the host DNA.
By damaging the cell membrane as it injects viral DNA into the
host celL.

Answers

Answer:

A

Explanation:

A virus, or phage, will go into a cell and inject instructions for it to start reproducing more viruses. Once the cell is full of viruses, they trigger the cell's 'self destruct' and burst out to go to other cells and rapidly reproduce exponintially.

Most animals living in the_______migrate or hibernate during the winter.

options:

Tropical Rainforest

Desert

Tudra

Answers

Answer:

Tundra

Explanation:

to survive the long cold winters and to breed and raise young quickly during the winter they migrate

The answer is Tundra.

please help im rlly stuck

Answers

Answer:

c

Explanation:

what happens to all the weight of the food we eat

Answers

Answer:

All the weight of food we eat can happen in many ways. It can be digested and turned into waste. It can also be turned into body fat. The weight of the food we eat can help give us nutrition and vitamin s.

Explanation:

The weight of food can slightly go away due to food going in to the digestion system and turns into waste.

Apologies if this isn't the best answer.

Hi- Uhm, Help, please?

Answers

Answer:

At the end of meiosis there are two daughter cells, at the end of meiosis telopashe there is four different cells

Explanation:

Type your answer in the box.
The video reports a decline in the number of "packers" in California. What are packers, and what challenges does
their decline pose to firefighters who fight wildfires?

Answers

Answer:

packers are people who pack mules with firefighting supplies and deliver those supplies to the firemen fighting fires in california. The decline of packers in california means that there is a smaller chance that the firemen wont have gear and supplies to fight the fire. The fires will win and burn down people's homes and cost some people thier lives.

Explanation:

Don't worry; this isn't the direct answer. I wrote this by myself.

what is a hybrid tell me brainly if you do

Answers

Explanation:

a hybrid is a mixture of two different things resulting in something that has a little bit of both

Answer:

A hybrid is an animal or plant resulting from a cross between genetically unlike individuals,a picture is below as an example of a HYBRID

Also, a hybrid can be something changed after being created.

Hybrids can be; cars,animals and even people (nephilim).

I hope this helps

where are the five places beavers can usually be found (bodies of water)

Answers

Answer:

They live in or around freshwater ponds, lakes, rivers, marshes and swamps.

Explanation:

They can be found in rivers , streams, lakes, ponds, and I’m not really sure what is the last one :(

energy transfer through molecule to molecule contact is called?

Answers

Answer:

It's called conduction

Explanation:

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Which process is true about natural selection? Use the number line to find0+(819140198OI-2218 V-100DONEWhat is the square root of negative one hundred Identify the reaction type shown and describe the cluesthat were used to identify it.NHNO3 Nz0 + 2H,03 Helppppp!! This is called Catastrophism and it states that the Earth has been affected by sudden, short-lived, violent events that were sometimes worldwide. Creationists always opt for the catastrophic explanation and more often than not, this is the dynamic that best explains what we see in nature. Farmer Elvin is holding 200 pounds of potatoes in storage for Chef Noble but Chef Noble has breached the contract by failing to pay for the potatoes. The potatoes are beginning to rot. If Farmer Elvin sells the potatoes to a local diner to make potato soup and salad, then this action would be considered: Group of answer choices An attempt to maximize damages Conversion An attempt to realize an unwarranted profit. A reasonable mitigation of damages. Help me out in this question please 15 points plz i need this now!!!Summarize How did some colonial women protest British taxes? PLEASE HELP !!!!! 1) Find the equation of the trend line (line of best fit). SHOW WORK2) Predict the number of tips that would be collected if 100 costumers were served at the restaurant on a given day. Explain your reasoning.3)EXPLAIN how to use the regression calculator to make a reasonable prediction given a data table (I don't know how to attach more than 1 picture by the way ) Un material determinado tiene un espesor de 30 cm y una conductividad trmica (K) de 0,04 w/mC. En un instante dado la distribucin de temperatura en funcin de "x" el cual es la distancia desde la cara izquierda de una pared, est dado por la siguiente funcin: T(x) = 150x2 -30x, donde x est en metros. Calclese el flujo de calor por unidad de rea cuando x=0 y x=30, para cada caso menciones si se est enfriando o calentando el slido. Write 0.115 as a fraction Help me with number 5 rn i need help its due soon. Bella earned $216 in interest after 4 years on a principal of $1,500. What is her interest rate? Please help! 20 points and Ill give Brainliest Joe is tracking the progress of his plants growth. Today the plant is 5 cm high. The plant grows 1.5 cm per day. A. Write a linear model (equation) that represents the height of the plant after d days B. What will the height of the plant be after 20 days Good Morning! Will anyone be kind enough to help me???BOOK ONE: THE COMING OF THE MARTIANSCHAPTER ONE: THE EVE OF THE WAR, excerptNo one would have believed in the last years of the nineteenth century [between 1890-1899] that this world was being watched keenly and closely by intelligences greater than man's and yet as mortal as his own; that as men busied themselves about their various concerns they were scrutinised and studied, perhaps almost as narrowly as a man with a microscope might scrutinise the transient creatures that swarm and multiply in a drop of water . With infinite complacency men went to and fro over this globe about their little affairs, serene in their assurance of their empire over matter. No one gave a thought to the older worlds of space as sources of human danger, or thought of them only to dismiss the idea of life upon them as impossible or improbable. It is curious to recall some of the mental habits of those departed days. At most terrestrial men fancied there might be other men upon Mars , perhaps inferior to themselves and ready to welcome a missionary enterprise. Yet across the gulf of space, minds that are to our minds as ours are to those of the beasts that perish, intellects vast and cool and unsympathetic, regarded this earth with envious eyes, and slowly and surely drew their plans against us. And early in the twentieth century [between 1900-1910] came the great disillusionment.Yet so vain is man, and so blinded by his vanity, that no writer, up to the very end of the nineteenth century, expressed any idea that intelligent life might have developed there far, or indeed at all, beyond its earthly level. Nor was it generally understood that since Mars is older than our earth, with scarcely a quarter of the superficial area and remoter from the sun, it necessarily follows that it is not only more distant from time's beginning but nearer its end.The secular cooling that must someday overtake our planet has already gone far indeed with our neighbour. Its physical condition is still largely a mystery, but we know now that even in its equatorial region the midday temperature barely approaches that of our coldest winter. Its air is much more attenuated than ours , its oceans have shrunk until they cover but a third of its surface, and as its slow seasons change huge snowcaps gather and melt about either pole and periodically inundate its temperate zones. That last stage of exhaustion, which to us is still incredibly remote, has become a present-day problem for the inhabitants of Mars. The immediate pressure of necessity has brightened their intellects, enlarged their powers, and hardened their hearts. And looking across space with instruments, and intelligences such as we have scarcely dreamed of, they see, at its nearest distance only 35,000,000 of miles sunward of them, a morning star of hope, our own warmer planet, green with vegetation and grey with water, with a cloudy atmosphere eloquent of fertility, with glimpses through its drifting cloud wisps of broad stretches of populous country and narrow, navy-crowded seas.And we men, the creatures who inhabit this earth, must be to them at least as alien and lowly as are the monkeys and lemurs to us . The intellectual side of man already admits that life is an incessant struggle for existence, and it would seem that this too is the belief of the minds upon Mars. Their world is far gone in its cooling and this world is still crowded with life, but crowded only with what they regard as inferior animals. To carry warfare sunward is, indeed, their only escape from the destruction that, generation after generation, creeps upon them.In three to five complete sentences, explain why the inhabitants of Mars are interested in Earth. Use information from the text to support your answer. Use proper spelling, grammar, and punctuation. estimate 40,182 2 Please help me with both the questions ty. AlBr3 can be used as a catalyst in the Friedel-Crafts alkylation reaction. The correct name for the compound represented by the formula AlBr3 is How did postwar writers use their writing to rejectvalues characteristic of this time period?O They used traditional forms of writing todescribe mainstream society.O They exposed contradictions within societyand celebrated individual humanexperiencesO They wrote nonfiction to compare Americanvalues to those of other countriesOThey described a utopian view of what theywanted society to be like. You are planning to save for retirement over the next 25 years. To do this, you will invest $820 per month in a stock account and $420 per month in a bond account. The return of the stock account is expected to be 10.2 percent, and the bond account will pay 6.2 percent. When you retire, you will combine your money into an account with a return of 7.2 percent. How much can you withdraw each month from your account assuming a 20-year withdrawal period