What is it about the structure of the alveolar-capillary unit that makes diffusion possible? Select all that apply.The capillaries are large. The cell wall of the alveoli is thin. Many capillaries surround one alveoli sac. There is always low pressure in the alveolar-capillary unit. The alveolar-capillary unit provides a large surface area.

Answers

Answer 1

Answer:

The most successful option would be: Many capillaries surround a sac.

Explanation:

Although in this question, I wanted to tell you that among all the options that is the most correct, but it is incomplete.

The capillaries that are in the alveolar unit are not only in great numbers to ensure gas diffusion but they are also SINUSOID capillaries where the cells of these capillaries do not have tight cell junctions, and there is a micrespace between cell and cell that forms the capillary wall.

And why is this? Because the greater the permeability of the capillary, the better the process of gas homeostasis or gas exchange at the alveolar level will be favored.

I hope I have completed your question, because it is very important that you know this, they are not simple capillaries that are only increased in number, but their sinusoidal permeable form makes them fulfill a VITAL function for the human being, this does not mean that all the capillaries of the body are like this, do not forget that we are speaking on time of the socket.

Answer 2

Answer:

B. The cell wall of the alveoli is thin

E. The alveolar-capillary unit provides a large surface area


Related Questions

The imagie below represents a part of the:

lytic cycle
lysogenic cycle
prophage cycle
bi-cycle

Answers

Answer:

Prophage cycle

Explanation:

The image is self explanatory

In organ transplants, the body recognizes that the new organ is made of foreign cells. What kind of medicine would you give a patient to increase the chances of transplant success?

Answers

Answer:

immunosuppressant

Explanation:

After an organ transplant, you will need to take immunosuppressant (anti-rejection) drugs. These drugs help prevent your immune system from attacking ("rejecting") the donor organ. Typically, they must be taken for the lifetime of your transplanted organ.

All cells reproduce to make new cells. However, stem cells actually form many different types of cells. Adult stem cells can also repair tissues in the body.

Explain the production of monoclonal antibodies and give an example of how they are used.

Answers

Answer:

Monoclonal antibodies (mAbs) are produced by introducing an antigen to a mouse and then fusing polyclonal B cells from the mouse's spleen to myeloma cells. The resulting hybridoma cells are cultured and continue to produce antibodies to the antigen.

we use this for

:The use of monoclonal antibodies to treat diseases is called immunotherapy therapy because each type of monoclonal antibody will target a specific targeted antigen in the body. Uses for monoclonal antibodies include: Cancer. Rheumatoid arthritis.

The respiratory system is divided into two parts a) Air passage way b) The lungs
Please explain Air passage way.

Answers

Explanation:

The air passage way is connected to the through the main organ/thing is called the trachea. When you breathe in oxygen in order to get to the lungs air goes through the throat and your trachea. Same goes for when you breathe out carbon dioxide.

Answer:

From the nostril we get to the tubulates which leads to the nasopharynx from there it leads to the glotis and way down gets to the trachea from where it to the bronchi and finally branches to the bronchus.

Why are "Outer planets" also called gas giants?​

Answers

Answer:

"Outer" planets are also called gas giants because they are large planets that have deep, massive atmospheres made mostly of gas.

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Hope this helps :)

Outer planets are also called gas giants because they are much larger than Earth and the other inner planets, and because they are made primarily of gases and liquids rather than solid matter, the outer planets are also called gas giants.

I need helppp :( science ~

Answers

I believe the answer is a prokaryote.

PLS HELP ME!!!!!!!!!!!

Answers

Answer:

From the mouse

Explanation:

It is directly gaining energy from the mous because the mouse is what gives the snake energy and if the snake directly consume it, it will get energy from it.

what is the term for when the moon appears to be filling with light

Answers

Answer:

full moon

Explanation:

In ancient times, why would a cloudy day make it so hard to tell what time it is?

Answers

Answer:

Because celestial bodies such as the sun and stars were used to tell time, so if they were obstructed by clouds it would be hard to tell time

Please help out! It would be very nice !!

Answers

Answer:D

Explanation:

Cell wall provides structure and protection

Answer:

D is the answer to the question

El aparato respiratorio presenta unas células productoras de ... Que atrapan los gérmenes y el polvo. En su superficie tienen una gran cantidad de unas estructuras celulares llamadas ... Cuya función es extender el mucus y dirigirlo hacia el exterior. En el estómago, las glándulas digestivas producen el ... El cual, por su extremada ... Ataca y destruye a los ... Que se introducen con la comida y la bebida.

Answers

Answer:

The respiratory system has cells that produce MOCO OR MUCUS, which trap germs and dust. On their surface they have a large number of cellular structures called CILIAS, whose function is to spread mucus and direct it outwards. In the stomach, the digestive glands produce the STOMACH ACID, which, due to its extreme ACIDITY, attacks and destroys the PATHOGEN MICROORGANISMS that are introduced with food and drink.

Explanation:

In the respiratory and digestive apparatus there are two types of super specialized mucous upholstery, where the cellular world is challenged.

In the respiratory mucosa the production of mucus and the mobilization of the cilia are part of the innate response of the organism as well as the acidity that is generated in the upholstery and in the gastric tract.

Biogeochemical cycles _______.

Answers

Answer:a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical substance moves through biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments of Earth.

Explanation:

A biogeochemical cycle is one of several natural cycles, in which conserved matter moves through the biotic and abiotic parts of an ecosystem


Edit: Nevermind! I figured it out!!

Use the information in the table to calculate the ages of the meteorites. The half-life of potassium-40 is 1.3 billion years.

Meteorite Initial Amount(g) Final Amount(g)

1 30 7.5

2 80 5

3 100 12.5


Use your calculations to answer the questions.


How old is meteorite 1?


How old is meteorite 2?


How old is meteorite 3?

Answers

Answer:

meteorite 1- 2.6 billion

meteorite 2- 5.2 billion

meteorite 3- 3.9 billion

Answer:

meteorite 1- 2.6 billion

meteorite 2- 5.2 billion

meteorite 3- 3.9 billion

Explanation:

how did darwin’s theory of evolution change the way biologists thought about classification categories

Answers

Answer:

hhh3h3h3hgegegegegeggegsgsggs

y

Explanation:

hhhhhhshshshshhdhdhdhghdhgd

Because at the time they classify by if it fly,swims,run etc but after Darwin’s theory it was study that animals evolve depending on the area

Describe natural selection

Answers

Answer:

Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.

Explanation:

best suited to the situation survive, and the ones that aren’t die

Which organisms would have the most similar traits?

Answers

Answer:

Organisms in the same family will have the most similar traits.

Organisms mostly will be the same when they are in the same family, and if there are two organisms in different families that look alike, it will be a coincidence.

Answer: organisms in the same order

Yeet Skeet

When the total lunar eclipse occurs what are the relative positions of the sun earth and moon

Answers

Answer:

A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the sun, Earth and moon are aligned (in "syzygy") exactly, or very closely so, with the Earth in the middle.

Explanation:

Answer:

The earth is between the sun and the moon

Explanation:

The Moon is non luminous that is doesn't generate light by itself so it depends on light from the sun so when its path through which it taps light from the sun is totally covered it means the Earth is closer to the moon than the Sun so that the Earth gets all off its light leaving nothing for the Moon and in this case the Moon is thrown to total darkness.

Is someone walking up to you from behind? A friend is walking up to you from behind. What three observations would help you predict when they would reach you?

Answers

Answer:

Three things i will observe are :

The sound of their movement when approaching meThe frequency of their foot stepThe distance they are away from me

Explanation:

In my opinion, the three points highlighted above can go a long way to help predict how soon or when they would reach meThe sound of their foot steps will determine how far or close they are from from me, if the sound is loud they are closest, if it is low then they are at a distance father.The frequency of their foot steps tell me about the speed with which they are approaching me, if the frequency is high, then they will approach sooner and vice versaThe distance they are way from me can help estimate when they would reach me, though still dependent on items  one and two above.

In a certain state, electricity is generated by using the earths heat. Wells drilled and natural steam is taken out through pipes. This natural steam powers the generator and the electricity generated. What type of energy is being used and what type of power plants are set up for harnessing this renewable energy?

Answers

Answer:

Geothermal

Explanation:

The geothermal energy is generated by the Earth's core that is a region with extremely high temperatures. The heat makes the geothermal power plants to work and thus generate energy from it.

What is the best definition of a chromosome? Based on the picture provided above :)

Answers

Answer:

d.

Explanation:

A chromosome is a strand of DNA that is encoded with genes. In most cells, humans have 22 pairs of these chromosomes plus the two sex chromosomes (XX in females and XY in males) for a total of 46. The word chromosome was originally coined in German from the Greek words khroma, meaning color, and soma meaning body.

What is a “shared derived character”?

Answers

Answer:

A shared character is one that two lineages have in common, and a derived character is one that evolved in the lineage leading up to a clade and that sets members of that clade apart from other individuals. 

Answer:

A shared character is one that two lineages have in common, and a derived character is one that evolved in the lineage leading up to a clade and that sets members of that clade apart from other individuals. Shared derived characters can be used to group organisms into clades. For example, amphibians, turtles, lizards, snakes, crocodiles, birds and mammals all have, or historically had, four limbs. If you look at a modern snake you might not see obvious limbs, but fossils show that ancient snakes did have limbs, and some modern snakes actually do retain rudimentary limbs. Four limbs is a shared derived character inherited from a common ancestor that helps set apart this particular clade of vertebrates.

i really need help on this one, A,B or C.

Answers

Answer:

B

Explanation:

B makes the most sense of your answer choices

Answer:

A)

Explanation:

This is because the law of the conservation of energy states that energy can not be created or destroyed. This means that you can not get more energy than you put in, this could be from any energy store. In addition That also means that you will not be able to get less energy than you put in.

Although energy can not be created or destroyed some energy is lost to heat or friction, this would mean that the energy is not transferred to the idea store and so is lost to inefficiency . An example of this would be wind turbines, the wind would move the turbine using kinetic energy however some of the energy is lost to heat and friction

Glaciers pushing rocks against rocks is an example of

Answers

Answer:

Erosion??

Explanation:

Answer:

Glacial Erosion

Explanation:

The image shows groundwater zones.

Top to bottom: Porous rock or soil, Water, Impermeable rock. Zone 1 is at the top of porous rock. Zone 2 is between porous rock and water. Zone 3 is in the Water. Zone 4 is between the Water and Impermeable rock.

Which is the saturated zone?

1
2
3
4

Answers

Answer:

The answer is 3

Explanation:

Hope this helps

Answer:3 or c

Explanation:

Which is the result of an object's motion?.

Answers

Answer:

Your answer would be if any of the object increases in mass. (A)

Explanation:

If we increase the mass of any object, the force of gravity would also increases.

hope it helps!

Complexity is a measure of how difficult it is to understand something. What is an example of complexity in the natural world?

Answers

Answer:

Answer:

Multicellular organism is the example of complexity of the natural world.

Explanation:

Multicellular organism such as human which is made of billions of cell. Each cell perform a specific function. The function of one organ is different from the other organ. For example, brain of human is made of millions of neurons which takes instructions from brain to the organs and bring messages from organs to the nervous system in the form of electrical impulses. In short every system in our body is full of complexity.

Why do we need human dna

Answers

DNA. Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions for the development and function of living things.

All known cellular life and some viruses contain DNA. The main role of DNA in the cell is the long-term storage of information.

We need human DNA since it give us the long term info storage, which is needed

DNA contains instructions for development, survival, and reproduction. DNA sequences must be translated into signals to make proteins, which do most of our body's job.

What is human genome?

DNA stores the instructions that are necessary for an organism to grow, maintain its existence, and reproduce itself. In order for these duties to be carried out, the sequences of DNA need to be transformed into messages that can be utilized in the production of proteins. Proteins are the complex molecules that are responsible for the majority of the work that is done in our bodies.

The human genome is comprised of all of the nucleic acid sequences that are found in humans. These sequences are stored as DNA within the 23 chromosome pairs that are found in the nucleus of cells, as well as in a tiny DNA molecule that is located within the mitochondria of each individual cell. In most cases, these are considered to be two distinct components: the nuclear genome and the mitochondrial genome.

Learn more about human genome, here:

https://brainly.com/question/25168976

#SPJ2

Which is the best evidence that two species have a common ancestor?

A:The two species have the same diet.



B:The two species live in the same habitat.



C:The two species' skeletal structures are 90% identical.



D:The two species' DNA sequences are 90% identical.

Answers

Answer:

I'd go with D.

Explanation:

Species may share similar physical features because the feature was present in a common ancestor (homologous structures). Molecular biology. DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are.

The answer should be D

You are a geneticist and two very angry hobbits, Pippin and Lola, come storming into your office. Pippin and Lola have just had a newborn baby girl named Beatrice. Beatrice has blue eyes, but pippin and Lola both have green eyes. Green eyes are dominant over blue eyes. Pippin thinks that Beatrice is not his baby, and is very angry with lola. Determine how it is in fact possible for Beatrice to be pippins baby girl.
A) What are pippin and Lola's genotype?
B) What is Beatrice's genotype?

Answers

Answer:

A.) If "G" is the dominant green-eyed gene and "g" is the blue-eyed gene, then Pippin and Lola's genotypes will both be Gg.

B.) Beatrice's genotype is gg.

Explanation:

I put this answer in the other question, but this just popped up as well so here you go :)

Answer:

a:Gg

b:gg

Explanation:

Describe three methods used to decrease the chances that microorganisms will spoil
the food.

Answers

1. wash your food.

2. put it in the fridge.

3. Cover it up.

I'm  boredddd lol

Drying, refrigeration, and fermentation are methods used to decrease the chances that microorganisms will spoil  the food.

Food preservation are techniques or practices which prevent the growth of microorganisms and slow the oxidation of fats in foods so as to prevent spoilage.

There are different methods of food preservation. Common methods which are used are drying, refrigeration, and fermentation.

Find out more at: https://brainly.com/question/18250110

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