Are there any parts of the human body that get oxygen directly from the air and not from the blood? i don't pay attention in biology

Answers

Answer 1

Answer:

The cornea.

Explanation:

The cornea is the only part of the human body that has no blood supply, it gets oxygen directly through the air. Also, did you know that the cornea is the fastest healing tissue in the human body, therefore, most corneal abrasions will heal within about 24-36 hours.

I hope this helps you! Stay safe <3


Related Questions

the greater the difference between dry bulb and wet bulb, the (blank) the dew point

Answers

The greater the difference between the dry bulb temperature and the wet bulb temperature, the drier the air is. From the air temperature and the wet bulb temperature, the relative humidity of the air can be easily found.

Which statement accurately describes the energy needs for cellular respiration and photosynthesis?
A. Solar energy is needed for cellular respiration but not for photosynthesis.
B. Solar energy is needed for photosynthesis, and chemical energy in the form of glucose is needed for cellular respiration
C.Chemical energy in the form of glucose is needed for photosynthesis, and solar energy is needed for cellular respiration.
D. Chemical energy in the form of glucose is needed for both cellular respiration and photosynthesis,​

Answers

Answer:

A

Explanation:

if something needed to enter the cell and couldn't go through the phospholipid bilayer, how else could it enter the cell?

Answers

Answer:

Through facilitated diffusion

Explanation:

A molecule that finds it difficult to enter through the cell membrane's phospholipid bilyaer can be assisted in doing so through a process known as facilitated diffusion.

Ordinary diffusion will not permit the movement of molecules against a concentration gradient or molecules can be prevented from passing the phospholipid bilayer due to their sizes/charges. Within the phospholipid bilayer exists special passages lined with carrier or channel proteins.

These proteins facilitate some molecules that will ordinarily not pass through the bilayer to pass through their special passages. This process is referred to as facilitated diffusion.

which of the finches in the
diagram above is most likely to have adapted to an area where the main
food source is large, hard seeds?
А
(4)
B
(3)
с
(2)
D (1)

Answers

Answer:

I1

Explanation:

how a plant might make the products of photosynthesis (c6h1206 + 602) from the reactants (6c02 + 6h20​

Answers

Answer:

by water and sun

Explanation:

please brilliant me and thank me thanxs

Sandra is heterozygous for eye shape.

What does this mean?

She has two of the same alleles for eye shape, one from each parent.
She has two different alleles for eye shape, one from each parent.
She has only one allele for eye shape, which she received from one parent.
She has two alleles for eye shape, both from the same parent.

Answers

Awnser:

She has two different alleles for eye shape, one from each parent

You always receive 1 allele from each parent, and you're heterozygous, those alleles are different.

Sandra is heterozygous for eye shape, this means she has two different alleles for eye shape, one from each parent. The correct option is b.

What is heterozygous?

Heterozygous means the person who has different alleles from each parent for the same type of character. There are two types of people, heterozygous, which contain different alleles for the same character. Homozygous, which means he has only one allele for one character.

Sandra has two alleles for eye shape, which means she got different eye shapes from her father and mother. She got two eye shapes, and now the allele which is dominant will be shown in her phenotype of Sandra. The other will be recessive.

Therefore, the correct option is b, She has two different alleles for eye shape, one from each parent.

To learn more about heterozygous, refer to the link:

https://brainly.com/question/3258389

#SPJ6

What are some things humans are doing to stop climate change in the tundra biome?

Answers

Answer:

The correct answer would be- reduced human interference to the habitat.

Explanation:

The Tundra Biome is a biome with an extremely cold region with little precipitation, short growing seasons, very poor nutrients. The Tundra biome is at risk due to global warming, which harms, plants and animal species and the ecosystem of the biome.

low carbon emission by reducing planet-warming pollutants by reducing the fossil fuels  is key to safeguarding Earth's tundra habitats and liting industries are the

Answer: Tundra is the coldest biome on Earth.

Explanation:

It has become sensitive to the trend of global warming the surface air temperature has risen by 0.9 °C. Many regions have experiences the record breaking high temperature in otherwise winter months since 20 century. Tundra natural fires release carbon dioxide gas in the atmosphere. The climate of Tundra can be changed by human efforts. Some activities like reducing the use of fossil fuels which release green house gases like carbon dioxide, and others which warm up the atmosphere, banning the industrial activities nearby regions, and protection of certain species affected by the rising temperature.



Name two models used
to show the transfer of
energy in an ecosystem

Answers

Answer:

Flow of Energy can be explained by means of two models namely: single channel energy model and Y-shaped energy model.

Hope this helps :)

Which phylum contains the largest multicellular forms of algae? In what way are these algae commercially important? Please help me :,)

Answers

Answer:

Phylum Rhodophyta and phylum Ochrophyta.

Explanation:

Phylum Rhodophyta and phylum Ochrophyta are the phylum that contains the largest multicellular forms of algae.  Algae belongs to phylum Rhodophyta also called red algae are used for commercial production of food and gels while on the other hand, algae of phylum Ochrophyta also known as brown algae are used to produce alginates, which are used as food additives in different products and as a thickening material.

what will happen to OTHER ORGANS if kidneys malfunction due to certain disease

Answers

Answer:

when your kidneys get affected in a negative way waste products start to build up in your body. It can cause some breathing troubles, poor sleep, weakness in your body,etc.

Explanation:

answerrrrrrrrrrrrrrrrrrrrrrrrr

Answers

Answer:

What is the question?

Explanation:

explain how plants are involved in the carbon cycle

Answers

Through the process of photosynthesis, carbon dioxide is pulled from the air to produce food made from carbon for plant growth.
Plants are involved with the carbon cycle because they go through a process called photosynthesis. Photosynthesis is when the plant absorbs carbon dioxide(CO2) and releases oxygen, this is for the plant to grow and live. This is very good for our environment and keeping the air clean.

Relate the surface area of a cell to the transport of materials.

Answers

If the size of a cell increases it will be more difficult (all other things being equal) for diffusion to transport materials out of the cell. Therefore, less of the cell's interior will be able to come in contact with the cell's surface. If less of it comes in contact, less of it can cross the cell membrane.

hope this helps and please mark me as brainliest please

4. Would a mutation in a red blood cell be passed on to offspring? Explain your answer

Answers

Answer:

The mutation that takes place in the somatic cells are not carried from one generation to another generation. The mutation in the red blood cells cannot takes place because the red blood cells does not have nucleus in them.

Explanation:

Mutations occuring in somatic cells can not be carried from one generation to another. Mutations within red blood cells are unable to take place because the red blood cells themselves don’t contain a nucleus.

As we know that the leaves of plants are waterproof due to cuticle. On the same way, take
some pieces of paper of leaf size and make them waterproof. After completion, put half of these
paper pieces in cold water and half in hot water. Do all the pieces of paper remains waterproof?
Explain your observations and results with justifications

Answers

no because the outside laters become cold or hot and it loses its waterproofing.

Which organisms convert nitrogen into a form that is usable by humans?
A. Bacteria
B. Omnivores
C. Plants
D. Algae

Answers

Yes it’s C I agree

HELP!!!!!
Scientists claim that climate change is happening because Earth is warming. They
also claim that humans have helped cause the warming by adding greenhouse
gases to the atmosphere. Other people claim that Earth is not experiencing climate
change because some winter days are still very cold.

Use evidence to evaluate each
claim about climate change.

Answers

Answer:

both right in own way

Explanation:

first;green house gas obviously helps to increase temperature of earth.

second;some winter days are still very cold because of global warming. this is also due to such work which helps to increase temperature of earth as well as climate change.

Answer and Explanation:

first;green house gas obviously helps to increase temperature of earth.

second;some winter days are still very cold because of global warming. this is also due to such work which helps to increase temperature of earth as well as climate change.

what are the steps in cellular respiration?

Answers

There are three main stages in the cellular respiration

1.Glycolysis

Glucose is turned into two molecules of pyruvate. This process takes place inside the cytoplasm and does not require O2

2.Kreb's cycle(TCA cycle)

This proces takes place in the mitochondrial matrix.Electrons are incorporated in the molecules that will be used in the next step.

3.Electron transport chain

This process takes place in the mitochondrial membrane. Energy from the electrons resulted in the krebs cycle is used to pump protons in the inter membranous space to form an electro chemical gradient. This will lead to the oxydative phosphorilation(ATP synthesis)

An organism with alleles Dd for eye color can display either the dominant or recessive trait?

Answers

Dominant because the D is the dominant trait and will always be dominant as long as there is a capital letter

The sides of a DNA molecule are made up of sugar molecules alternating with ___________ molecues.

Answers

Answer: phosphate

Explanation:

Deoxyribose nucleic acid, which is commonly referred to as DNA simply carries genetic information in an organism. The m DNA is made up of two nucleotides strands.

Nucleotides are simply the DNA's building block. It should be noted that the sides of the DNA consist alternating sugar molecules and the phosphate groups.

Organism A can carry out cellular respiration. Organism B can carry out only glycolysis. Which organism will be able to use more of the energy in a molecule of glucose? Explain your answer.

Answers

Answer:

...

Explanation:

It is definitely organism A. Cellular respiration has a net of 32 molecules of ATP while glycolysis only has 2. This is because cellular respiration involves Kreb's cycle which causes the molecules to be constantly reduced and oxidized as electrons move from one molecule to another. This Is known as the electron transport chain. This releases a molecule of ATP every time a redox reaction occurs.

When would anaerobic respiration be used instead of aerobic respiration?

Answers

Explanation:

When your doing a physical activity like running Anaerobic respiration is used.

Can anyone eXpLaiN what competition, mutualism, parasitism? Please and thank you. <3​

Answers

Answer:

parasitism is when one animal harms another like a parasite. for example mosquitos and humans have a parasitism relationship because mosquitos harm humans. in total parasitism means the relationship in which one benefits and the other is harmed. mutualism is when both benefit and no on is harmed. an example of mutualism is when oxpecker (a kind of bird) eats the bugs off of a rhino, the rhino gets pest control and the bird gets food. and competition is the relationship between organisms that need and search for the same resources in the same place. for example predators of different species search for the same prey.

i hope this helped!!

Explanation:

in total parasitism means the relationship in which one benefits and the other is harmed

mutualism is when both benefit and no on is harmed.

competition is the relationship between organisms that need and search for the same resources in the same place

PLZZ HELP ME IF I GET IT WRONG I GET A D!!!!!!!!

Answers

Answer:

Meiosis gives AA or BB

but the question is blur

help me please, i just need the answers

Answers

Answer:

My Brain ;(

Explanation:

Nuclear energy comes from which part of an atom?
is it nuclear fusion or fission?

Answers

Answer:

Nuclear energy comes from the nucleolus of an atom(the core).  It is a nuclear fusion.

Explanation:

Hope this helps have a good day!

:j

A ____ surface will absorb all colors.
A green surface will absorb all colors and reflect ____

Answers

Answer:

A Black surface will absorb all colors.

A green surface will absorb all colors and reflect green.

=> Any surface which absorbs all the colors appear to be black because no color is reflected.

=> A surface color is a color which is reflected by it.

For example:

If a surface is red colored, This means that it reflects red color. That's why it appears to be red.

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807

_________ percent of total water withdrawals come from surface water.
85
79
34

Answers

Answer:

79

Explanation:i hope this the answer i looked it up

I am pretty sure is 34 but I can be wrong

Question 9
How do animals get nitrogen that is stored in the soil?
O A) Animals do not take in the nitrogen stored in the soil.
O B) Bacteria change the nitrogen into a gas that the animals breathe.
OC) Plants ab orb the nitrogen from the soil and animals can eat the plants.
O D) The animals can eat the soil and absorb the nitrogen through their digestive system.​

Answers

Answer:

the answer is C

Animals get the nitrogen they need by eating plants or other animals that contain nitrogen. When organisms die, their bodies decompose bringing the nitrogen into soil on land or into ocean water. Bacteria alter the nitrogen into a form that plants are able to use

name the organ that is adapted for gaseous exchange in humans

Answers

Answer:

Lungs.

Explanation:

Lungs are the organs that are responsible for gaseous exchange in humans. The lungs absorb oxygen from the air that is required for the process of respiration while on the other hand, carbon dioxide is transferred from the cells to the lungs through blood because carbondioxide gas is a waste material that is produced during respiration so it can be removed from the body with the help of lungs..

Other Questions
Loren is examining a hair found at a crime scene. He notes radical changes in the coloring of the hair. What is the term for this type of coloring? I Don't Know!!!A used book store also started selling used CDs and videos. In the first week, the store sold a combination of 40 CDs and videos. They charged $4 per CD and $6 per video and the total sales were $180. Determine the total number of CDs and videos sold.I kind of need to know how to solve. I have more q's like this but if I know how to, I might be able to do it. Please help me, I dont know the answer Problem1+ 10x + 13 = 4 Is the constitution outdated and why Rigor mortis is a general softening of muscle fibers following deathTrue or False? Which of the following did Hitler fear more?A. That the West would fight Germany if he attacked PolandB. That the West and the Soviety Union would ally to oppose Germany which of the following is an example of internal data in marketing information system? Locate the following countries according to their region in the world.EspaaYour answer: Amrica CentralEuropa Amrica del SurEl CaribeAmrica del Norte HELPWrite an equation of a line passing through (-8, 6) and parallel to the line y=-4x - 1 Is plankton biotic or abiotic? PLEASE HELP MEEEE UGH on 5 How did Mongol rulers deal with the societies they conquered? Choose four correct answers.They allowed some self-rule among loyal cities.They took away womens property and freedom.They invited conquered warriors to join their forces.They imposed laws that protected religious freedom.They destroyed enemy cities and killed enemy leaders.They let defeated peoples leave and form new kingdoms. Based on its position on the periodic table, which of the following elements is a nonmetal?A. Potassium (K)B. Vanadium (V)C. Nickel (Ni)D. Bromine (Br) ILL MARK AS BRAINLESS PLS HELP Which might be considered a limiting factor to the amount fish in a lake 1) Amount of squirrels in the environment2) Amount of water in the lake3) Temperature of the lake4)Choice 2 and 3 Question 1Item 1(The following passage is excerpted from a textbook published by an American and a Dutch scientist in the 1950s.)Science is often defined inadequately as an organized body of knowledge. This would make cookbooks, Sears, Roebuck catalogues, and telephone books science, which they are not. Sometimes science is defined simply as rationality, but that would make much of theology and metaphysics science, which they are not. Rationality is logical consistency, lack of contradiction. It is to be distinguished from reasonableness, the quality of a mind open to arguments and evidence opposed to its beliefs: a willingness to reconsider. Rationalists can be quite unreasonable or dogmatic. Rationalist metaphysicians and theologians are often certain about premises which come from intuition or revelation. Even paranoiacs may be thought of as rationalists, for they are commonly most rigorous in reasoning. But their premises, which they cling to in spite of all evidence, are absurd.WHAT SCIENCE ISScience is empirical, rational, general, and cumulative; and it is all four at once. Science is empirical in that all its conclusions are subject to test by sense experience. Observation is the base on which science rests, but scientific observation is more than keeping ones eyes open. It is observation made by qualified observers under controlled conditions of those things which confirm or disconfirm, verify or refute a theory. Sherlock Holmes* could tell by the stains on a vest what a man had eaten for breakfast. From a number of such observations he arrived at a theory about why and how a particular crime was committed. This procedure is excellent for detection but insufficient for science, because it yields only knowledge of particular events. Science would go on to ask why and how crime, not a particular crime, is committed. Science uses facts to test general theories and general theories to make predictions about particular facts.Scientific observations may be made of things as they exist, like the color of an apple or the temperature of the air, or it may be made of what results from an experiment. An experiment is the deliberate manipulation of conditions in order to bring about what we want to observe. If we want to test the hypothesis that a new plastic can withstand two hundred pounds of pressure without crumbling, we may have to create a situation in which such pressure is applied to a piece of the plastic, because it is unlikely that the situation already exists anywhere in the world, or if it does, that all other factors are kept constant. In some sciences, like astronomy, we do not sufficiently control the subject matter to experiment on italthough we do control the conditions of observationand we distinguish those sciences from others, like chemistry, in which experiment is possible, by calling the latter experimental sciences.Although all scientific thought ultimately rests on observation, there are vast portions of it which are entirely rational: analysis of the meaning of terms, deductions from existent theories, explorations of the logical relations among concepts and among theories. Logic is applied to science constantly because logic contains the rules of valid thinking. The application of mathematics is often thought, erroneously, to be an index of the status of any science. Of course, the more it can be applied usefully within a science, the more advanced the science. For mathematics functions both as a language in which scientific laws are stated, giving them the utmost precision, elegance, and economy, and as the basis of measurement. Many of the most significant advances in physics, astronomy, and chemistry have depended on advances in and application of mathematics. Without calculus the work of Isaac Newton would have been impossible. Yet great scientific work in other fields, performed by men like Pasteur, Darwin, and Pavlov (with whose names pasteurization, evolution, and conditioned response in psychology are associated), has used little or no mathematics.In the second sentence of the first paragraph, the authors mention cookbooks, catalogues, and telephone books primarily toillustrate the broad array of objects that are organized by scientific principlesillustrate the broad array of objects that are organized by scientific principlesAconcede that rational argumentation can sometimes lead to absurd conclusionsconcede that rational argumentation can sometimes lead to absurd conclusionsBdemonstrate that a particular definition of science is overly inclusivedemonstrate that a particular definition of science is overly inclusiveCcondemn those who erroneously regard such works as forms of sciencecondemn those who erroneously regard such works as forms of scienceDhighlight the inherent difficulty of distinguishing science from other types of knowledge Example 3L1 and 22 form a linear pair. If m_1 = 4 m22, find the measure of each of the two angles. express 20cm as a percentage of 3m In five to seven sentences, describe the difference between a parliamentary and a presidential government.plz help