Are there any parts of the human body that get oxygen directly from the air and not from the blood?
Answers
Answer:
The cornea in the eye.
Explanation:
The cornea is the only part of a human body that has no blood supply; it gets oxygen directly through the air. The cornea is a transparent tissue, allowing for light to pass through. If it had blood vessels there, that would be an issue - for that tissue! And the cornea receives its oxygen directly from the air. When contact lenses were first used, people were instructed to take out their contacts when they go to sleep - because wearing them at night would reduce the oxygen intake to the eyes. Then they began manufacturing contact lenses that allowed for the lenses to “breathe” permitting people to wear them day and night.
Related Questions
Jane has Type AB blood and Sam has Type B blood. They have a daughter whose blood is Type A. Which of the following is Sam's blood genotype?
AB
AO
AA
BO
BB
OO
Answers
Answer:
Sam's genotype would be BO/BO
Explanation: Both of these would be exmapls of Sam's blood genotype.
hope this helps!
What are the process the enzyme in the digestive system?
Answers
Answer:
Enzymes break down the food that you eat. They break down the fats, carbohydrates, and protein in the food we eat.
Explanation:
I hope this helped a bit! Stay safe!
Answer:
Amylase breaks down starches and carbohydrates into sugar. Mainly it break
down the fats, carbohydrates and proteins we
eat.
The image below illustrates a specific organ in a plant found below ground:
This organ provides more than one function to the plant. Which of the following is a function of this organ illustrated in the picture?
Question 6 options:
Anchors the plant in the soil
Absorbs oxygen from the soil
Transports carbon dioxide to the soil
Releases water into the soil
Answers
Roots represent a plant organ that anchors the plant in the soil. It is a fundamental part of the plant.
What are plant organs?The plant organs are specialized groups of tissues that work together to perform specific functions.
The main plant organs include shoot, roots, and leaves, each one having specific functions.
The roots are responsible to anchor the plant to the soil in order to obtain fundamental nutrients from it.
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Answer: A is the answer
Explanation: i took the quiz
What is the difference between the sympathetic and parasympathetic division of the nervous system?.
Answers
Answer:
The sympathetic nervous system is involved in preparing the body for stress related activities; the parasympathetic nervous system is associated with returning the body to routine, day-to-day operations. The two systems have complementary functions, operating in tandem to maintain the body's homeostasis.
Example of thigmonasty and chemonasty in plants?
Answers
Explanation:
THIGMONASTY:-Thigmonasty or seismonasty is the nastic response of a plant or fungus to touch or vibration.
EXAMPLE::-an example is the shutting of a venus fly trap. The drooping of leaflets of Mimosa pudica when touched is also a thigmonastic movement.
CHEMONASTY:- the nastic movement of a plant in response to a chemical stimulus.
EXAMPLE:-In the Mimosa pudica plant, when we touch the leaves of the plant they fold up. Here the stimulus is touch. 2. In a dandelion flower, the opening up of the petals of this flower in the morning in bright light and closing in the evening when light fades.
HOPE IT HELPS YOU #ITZADMIRERThigmonasty is also referred to as seismonasty and it can be defined as the nastic response (movement) of a living organism such as a plant to either touch or vibration.
An example of thigmonasty in plants is the shutting of a leguminous subfamily Mimosoideae such as venus fly trap.
What is chemonasty?Chemonasty can be defined as the nastic response (movement) of a living organism such as a plant to a chemical stimulus.
An example of thigmonasty in plants is the closing or bending of glandular hairs of sundew due to nitrogenous chemical compounds.
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how dose food chain start
Answers
Answer:
The food chain starts with the sun
Explanation: because it provides energy for everything on the planet
Which of the following best defines PRODUCERS? *
Answers
Answer: C.
Explanation:
plants are producers
Please help, I’ll give brainliest.
Answers
Answer:
it involves a physical exchange of chromosome segments in the tetrad (3)
Explanation:
def of crossing over
Crossing over is the swapping of genetic material that occurs in the germline
What is a apple?
A.Fruit
B.Veggie
C.Food
D.Meal
Answers
Answer:
A. Fruit
Explanation:
An apple is a Fruit because it includes seeds.
In a diagram of a leaf, the outermost layer of cells would be the:.
Answers
For which of these vehicles is the percentage reduction in the amount of hydrocarbon emission the most?
Answers
The car whose production of carbon dioxide is least will have the most percentage reduction in the amount of hydrocarbon emission.
What is a hydrocarbon?A hydrocarbon is a compound which is composed of hydrogen and carbon only.
Hydrocarbons are important as they are commonly used as fuels for many vehicles.
The products of the combustion of hydrocarbons are carbondiodioxide, water and heat.
Because of the effect of carbon dioxide as a greenhouse gas, many vehicles are switching to fuels with less hydrocarbon emissions.
Therefore, a car whose production of carbon dioxide is least will have the most percentage reduction in the amount of hydrocarbon emission.
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Which of the following is TRUE about how are rocks deformed?
a. change its size, volume, or shape
b. there will be an equal pull and pushes on the rock from different direction.
c. rock will undergo tectonic pressure
d. there will be unequal pull and pushes on the rock from different direction.
Answers
Answer:
a
Explanation:
Rocks change its size, volume, or shape because of weather, as well as tectonic pressure.
The body links amino acids with peptide bonds in order to form:.
Answers
Answer:
A DIPEPTIDE is formed when two amino acids combine and a TRIPEPTIDE is formed when three amino acids combine. A polypeptide is a long chain of amino acids linked by peptide bonds.
WILL MARK BRAINLIEST AND GIVE 25 POINTS Explain how you linked the predator and its prey to a specific environment.
Answers
Answer:
The mouse and shrew bones were common to all three owls so they were not useful in identifying environments. The gopher bones were unique to the great grey owl of Alaska. Gophers are rodents that are successful in areas with soft soil and lots of grass, so the gopher and this owl would be found in the meadows and evergreen forests of Alaska. The bat was unique to the barking owl of Australia. The bat would be found in woodland habitats where there are many trees the bat can hang from. The gull bones were unique to the short-eared owl of Cuba. Gulls are wetland birds, so the gull and this owl would be found in marshes and coastal areas.
Answer:)
Sample response: The mouse and shrew bones were common to all three owls so they were not useful in identifying environments. The gopher bones were unique to the great grey owl of Alaska. Gophers are rodents that are successful in areas with soft soil and lots of grass, so the gopher and this owl would be found in the meadows and evergreen forests of Alaska. The bat was unique to the barking owl of Australia. The bat would be found in woodland habitats where there are many trees the bat can hang from. The gull bones were unique to the short-eared owl of Cuba. Gulls are wetland birds, so the gull and this owl would be found in marshes and coastal areas.
Explanation:) have a great day hope this helps
brainliest would be very very appreciated.
What is Phobia ?
Name one Phobia
Answers
A phobia is an intense fear of something that, in reality, poses little or no actual danger. Common phobias and fears include closed-in places, heights, highway driving, flying insects, snakes, and needles. However, you can develop phobias of virtually anything.
OR
A Phobia is an irrational fear of something that's unlikely to cause harm. The word itself comes from the Greek word“phobos,” which means “fear” or “horror.” Hydrophobia, for example, literally translates to fear of water. When someone has a phobia, they experience intense fear of a certain object or situation.
The chart shows the percentage of different elements in
the human body.
Which element is the most prevalent in the human body?
Elements in the Human Body
nitrogen
O hydrogen
O carbon
O oxygen
Nitrogen
2.6%
Other
3.4%
Hydrogen
10%
Carbon
23%
Oxygen
61%
Answers
Answer:
oxygen
Explanation:
The most abundant elements by mass in the body of a healthy human adult are Oxygen (61.4%)
toppr
Characteristics such as eye color, that are passed from one generation to the next, are known as ______.
Answers
Answer:heredity
Explanation:something that’s passed on to some members
Answer:
Heredity
Explanation:
You get some of these traits from your parents such as hair color, eye color, height, etc
3) A doctor tells you that you were born with more slow twitch fibers than fast twitch fibers and
that it would better if you joined the cross country running team instead of track and field for
sprinting. You have always wanted to be a sprinter. What can you do to make up for your
lower ratio of fast twitch to slow twitch muscle fibers? How will what you do increase your
sprinting performance?
Answers
Endurance exercises is the only way to increase fast twitch fibers.
If we want to increase the lower ratio of fast twitch to slow twitch muscle fibers, then we can achieve it through exercises and long-distance endurance training such as running and cycling.
What is endurance training?Endurance training refers to those exercises that increase endurance. The term endurance training generally refers to the training of the aerobic system which is opposed to the anaerobic system. so in conclusion, we can say that endurance exercises is the only way to increase fast twitch fibers.
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Schistosoma mansoni belongs to which of the following groups a. protozoan b. cestodes c. apicomplexa d. trematodes e. nematodes
Answers
Answer:
E. Nematodes
Explanation:
Explanation:
explain how weather conditions in Florida influence human behavior (100 points!!)
Answers
Answer:
hydrologic conditions in Florida have influenced
Explanation:
various atmospheric, oceanic, and hydrologic conditions in Florida have influenced and can influence human behavior
how the amount of oxygen in the water affected by the light intensity?
please help me
Answers
Hope this help
Which phrase explains what the arrows show? how convection currents move in Earth’s interior the location of heated material near Earth’s surface where plates move as material cools in the outer core why the densities of materials remain constant at different layers.
Answers
The phrase that explains the arrows is how convection currents move in Earth’s interior.
What is convection current?The convection current is the process of movement of the heat from one place to another.
It is a single or multiphase flow of fluid due to body force and heterogeneity.
The convection current happens when the fluid is heated from the bottom and cooling from the upside.
Thus, the correct option is a, how convection currents move in Earth’s interior.
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Answer:
A
Explanation:
Edge22'
Which is NOT a goal of ecological succession? equilibrium reduction of diversity diverse, mature species.
Answers
Equilibrium reduction of diversity is not a goal of ecological succession.
What is ecological succession?Ecological succession is a process that gradually and continuously replaces one community with another community over a period of time.
Ecological succession is necessary for the growth and development of an ecosystem. The main goal of ecological succession is to initiate the process of colonization and recolonization takes place where a particular location is destructed by any means of biotic and abiotic factors.
Therefore, the equilibrium reduction of diversity is not a major goal of ecological succession.
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In the body, the homeostasis of which element is related to properties of bone? cesium carbon calcium copper.
Answers
Answer:
Calcium
Explanation:
it helps to make the bones strong by maintaining the bone mass necessary for them to function well.
Answer:
calcium
Explanation:
Where in the body are cells found with an abundance of aquaporins in their membrane?.
Answers
In the body cells found with an abundance of aquaporins in their membrane in the AQP0 which is an abundant in the lens and these are found in the proximal of kidney and the blood vessels.
What is aquaporins?Aquaporins has been found in a very high concentration in the part or epithelial cells and it is responsible for the production of aqueous humor and AQPs is also known as biological water proteins channel that has unique functional as well as structural properties.
Aquaporins are also known as the trans membrane of the protein that has to regulate the water flow in the cell or out of the cell. Multicellular organisms are made up of eukaryotic cell and the eukaryotic cell is consist of different cell organelles to carry out different functions in the cell. The multicellular organisms perform different life process in different cells because they have specific cell for specific function.
Therefore, In the body cells found with an abundance of aquaporins in their membrane in the AQP0 which is an abundant in the lens and these are found in the proximal of kidney and the blood vessels.
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Proteins that assist in the movement of substances across membranes can be classified into two types based on how they move solutes across a membrane:
Answers
Proteins that assist in the movement of substances across can be classified into two types which are:
Carrier proteinsChannel proteins What are Proteins?These are biological molecule which consists of amino acid sequences and are involved in metabolic activities in the body. Channel proteins transport molecules through passive diffusion while carrier protein transport substances through facilitated diffusion.
They are also found in cells and help in the selective movement of molecules in and out of the cell.
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If you were to test a sample of soda lime with universal indicator would it register a pH above or below?
Answers
In the Cheseapeake Bay ecosystem, beds of eelgrass provide food and shelter to growing blue crabs. As blue crabs mature, they feed on fish and are fed on by larger animals like egrets. As organisms die, decomposers like bacteria in the sand of eelgrass beds help break down organic material.
Which of the following correctly matches a biotic factor in this ecosystem to the role it plays in cycling matter?
A.
Decomposers release carbon dioxide that eelgrass use for photosynthesis.
B.
Blue crabs convert carbon dioxide to organic sugars through respiration.
C.
Fish and other animals convert nitrogen to a form that can be used by plants.
D.
Sand contains nutrients like nitrogen that it transmits to eelgrass.
Answers
Answer: Decomposers release carbon dioxide that eelgrass use for photosynthesis.
Explanation: Hi, If this is for study island then this is the right answer.
Decomposers release carbon dioxide that eel grass use for photosynthesis a biotic factor in this ecosystem to the role it plays in cycling matter. Thus, option (a) is correct.
What is photosynthesis?Photosynthesis is the process through which a plant takes in water, carbon dioxide, and sunshine. Light energy, minerals converting to oxygen, and organic substances high in energy are what make plants grow.
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Photosynthesis requires the reaction of 12 grams of sugar and oxygen to produce 12 grams of both carbon dioxide and water. Decomposers play an important part in the transfer of energy through an environment.
As a result, the decomposers emit CO2, which eel grass uses for photosynthesis. Therefore, option (a) is correct.
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Which was not a NEW method of population control of rabbits?.
Answers
Answer:
Mosquitoes and fleas carrying the Myxoma virus
Explanation:
Proteins do not pass through cell membranes because.
Answers
Answer:
Proteins are generally way too big to be able to fit through a cell membrane.
Explanation:
They cannot compress their molecules to pass through.