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.
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:
B. The cell wall of the alveoli is thin
E. The alveolar-capillary unit provides a large surface area
Competition can affect a population size?
A. True
B. False
Answer:
True
Explanation:
Competition limits population size. Imagine 7 animals fighting over 2 meals. This creates competition and some will not be fed.
which type of plant would likely be more successful at producing offspring that would develop into new plants
A) Corn
B) Teosinte
Answer:
B
Because it has more seeds that have a 65-80 percentage of becoming plants.
Answer:
Corn
Explanation:
Corn is proverbially common in most part of the world than Teosinte which is ancestral to Corn. Teosinte is common to Mexico and Central America.
Human blood consist of blood groups A, B, & O. However, there is one more blood group, AB, which contains alleles A and B in the same genotype. What is this phenomenon called?
Answer:
codominant inheritance
Explanation:
edge
Sound travels as mechanical waves.
How does light travel?
as mechanical waves
as magnetic beams in a medium
as surface waves
as electromagnetic waves
Answer:
Light travels as a surface wave
Explanation:
Answer:
it's electronic waves
Explanation:
i took the test and it said that it was electronic waves not surface waves
Which of the following symbiotic relationships is considered parasitic?
A. Tapeworm in an intestinal tract
B. Bees transporting pollen from flowers
C. Pilot fish swimming under sharks
D. Birds eating the insects from the back of a hippopotamus
Answer:
A. Tapeworm in an intestinal tract.
Explanation:
This symbiotic relationship is parasitic because the tapeworm causes harm to the host. Tapeworms feed off the nutrients the host consumes, thus making the host sick.
Not parasitic:
Bees transport pollen from flowers back to the nest to feed the young bees, but pollinate female flowers as well which keeps the flower population alive.
Pilot fish swim under sharks to keep other prey from eating them, and the shark do not eat eat the pilot fish.
Birds eating the insect of the back of a hippopotamus keep the hippo clean and parasite-free as well as feeding the birds.
The presence of tapeworm in intestinal tract is considered parasitic. Thus, the correct option is A.
Symbiotic relationships refers to the association between two two organisms belonging to different species. There are three types of symbiotic relationships which are mutualism, commensalism and parasitism.
In mutualism, both of the organisms involved are benefited from the relation.
In commensalism, one of the organisms involved is benefited and the other is neither benefited nor harmed from the association.
In parasitism, one of the organisms involved is benefitted and the other one is harmed from the association.
As in the relationship between tapeworm and human, tapeworm is benefited but the human involved is harmed. Thus, it is a parasitic relation.
Thus, the correct option is A.
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____ is the study of how and why plants and animals live where they do. It also provides evidence for evolution.
A. Biogeography
B. Zoology
C. Geography
D. None of the above
What is the weather like in Tropical rainforests?
Answer:
A tropical rainforest climate is typically hot, very humid, and wet.
Explanation:
Select the correct answer.
Which of the following is the correct definition of a biography?
OA
an account of a fictitious experience that relies on figurative language
B.
an account of a single significant experience in a person's life
C.
an account of somebody's life written by that person
D.
an account of somebody's life written or produced by another person
Reset
Next
Answer:
D.
an account of somebody's life written or produced by another person
Which is a sustainable practice?
A. Wind farms
B. Clear cutting
C. Flood irrigation
D. Overfishing
Answer:
A. wind farms
Answer:
Wind farms
Explanation:
Starting today, many restrictions are being lifted. Is the pandemic over? Explain.
Answer: The pandemic is not over at all. Cases are increasing rapidly and yet there is still no known cure.
Explanation:
how is a food web different from a food chain
A. Food webs contains only producers not consumers
B. Food webs do not include decomposers
C. Food webs exist in aquatic environments food chains exist in terrestrial environments
D. Food webs contain many different linked food chains
Answer:
D. Food webs contain many different linked food chains
Explanation:
Cattle live in an area where the streams are dry. For which basic need do these cattle most likely compete?
a food
b shelter
c water
d energy
Answer:
c
Explanation:
Competition for water is likely to be more important to the cattle than competition for food, shelter, or energy, as these other needs can typically be met through other means. Therefore,option (C) is correct.
Why cattle need water to survive?Cattle, like all living organisms, require a consistent supply of water in order to survive. In the passage, it is mentioned that the streams in the cattle's area are dry, which means that there may be limited access to water in this area. Cattle, also known as cows or bovines, are large, hoofed mammals that are domesticated for their milk, meat, leather, and other products. They are typically raised on farms or ranches, and are known for their docile and gentle nature. Cattle are herbivores, and are typically fed a diet of grass, hay, and other plant materials
As a result, the cattle may have to compete with one another for access to water, as it is a basic necessity for survival. In this situation, competition for water is likely to be more important to the cattle than competition for food, shelter, or energy, as these other needs can typically be met through other means.
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. Which is NOT a function of the skeletal system? a. defense b. movement c. protection d. storage
What are the key features of a tundra?
A. cold winter, thin acidic soil, evergreen trees
B. many evergreen trees, short moist summers, long snowy winters
C. long cool summers, short dark winters, migrating animals
D. treeless, permafrost, cold dark winters
Answer:
D. treeless, permafrost, cold dark winters
Explanation:
The correct answer would be D
Tundra is a habitat in which tree growth is hampered by cold temperatures and short growing seasons. Therefore, option (D) is correct.
What is a tundra?The freezing temperatures and short growing seasons of a tundra biome make it difficult for trees to develop in this sort of ecosystem.
Most of the time, it is cold, but in the summer, it can get quite warm. The winters on the tundra are long, dark, and very cold. For six to ten months of the year, temperatures are below 0 degrees Celsius. Because the temperatures are so low, there is a layer of frost below the surface. This is a layer of frozen ground.
Arctic tundra is found above the Arctic Circle in Alaska, Canada, Russia, Greenland, Iceland, and Scandinavia, or in Antarctica. Alpine tundra are high on mountains where nightly temperatures are below freezing.
Therefore, option (D) is correct.
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Why testes is extra abdominal in position in man ?
what forces cause surface ocean circulation? what forces cause deep water circulation?
Answer:
ANS 1) Ocean currents can be caused by wind, density differences in water masses caused by temperature and salinity variations, gravity, and events such as earthquakes or storms. Currents are cohesive streams of seawater that circulate through the ocean.
ANS 2)n the deep ocean, the predominant driving force is differences in density, caused by salinity and temperature variations (increasing salinity and lowering the temperature of a fluid both increase its density). There is often confusion over the components of the circulation that are wind and density driven.
HOPE IT HELPS : D PLEASE MARK ME BRAINLIEST
Explanation:
A. 25%
B. 50%
C. 75%
D. 100%
Who is given credit for the basic design of the periodic table of the elements?
John Dalton
Gregor Mendel
Dmitri Mendeleev
Ernest Rutherford
Answer:
the answer is C Dmitri Mendeleev
Explanation:
Which of the following provides the best evidence that the circulatory system and the respiratory system work together to carry out their functions?
A : Nutrients are absorbed into the blood from the intestines.
B : Lungs expand and contract through movements of the diaphragm.
C : New red blood cells are generated in the marrow of bones.
D : Gases exchanged in the lungs are carried by the blood.
Answer:
D
Explanation:
Your first order of business should always be to see which answers involve both of the systems. A has the circulatory system (blood) but no respiratory system (intestines are the gastrointestinal system), B has the respiratory system (the lungs) but no circulatory system, C has the circulatory system (new red blood cells) but not the respiratory system (bones are the skeleton), and that just leaves D, so it has to be the answer. When you look at it to check, it includes both systems, as the lungs are part of the respiratory system and the blood is part of the circulatory system.
Skin color, fur color, and height are examples of which inheritance pattern?
A. Mendelian inheritance
B. incomplete dominance
C. codominance
D. polygenic inheritance
Answer:
D
Explanation:
Skin color, fur color, and height are examples of polygenic inheritance. Thus option D is correct.
What is polygenic inheritance?Polygenic inheritance is defined as a type of heredity where the trait is created by the interactions of many genes, as opposed to monogenic inheritance where the phenotype is created by the expression of just one gene.
When numerous separate genes have an additive or comparable effect on a single quantitative characteristic, this is known as polygenic inheritance.
Multiple gene or multiple factor inheritance are other names for polygenic inheritance.
The some of the characteristics are since epistasis is not at play, the expression of one gene is not obscured by the existence of the other genes. There are no dominant or veiled genes; the gene involved in polygenic inheritance is either contributing or non-contributing.
Thus, skin color, fur color, and height are examples of polygenic inheritance. Thus option D is correct.
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Plants obtain their organic nutrients (carbon, hydrogen, and oxygen) by:
ingesting food
photosynthesis
fermentation
chemosynthesis
Answer:
photosynthesis
Explanation:
plants can absorb most if not al of the things through their leaves alone to get organic nutrients. The roots are for more less organic nutrients like fertilizer etc...
Answer:
photosynthesis
Explanation:
photosynthesis literally be like:
HEY YOU CO2 ! YEA YOU! come 'ere litle guy. let's brEAK U APART, SHALL WE? there u go, broken into carbons...
answer this question
technically its not even a question but idk. whats up?
Both parents can roll their tongue, yet their child cannot. What must the parent's
genotype be?
A. Parents must both be homozygous dominant
B. Parents must both be homozygous recessive
C. Parents must both be heterozygous
D. IDK
The movement of soil from one place to another place is called? ANSWER: GLACIATION, DEPLETION, or EROSION
Answer:
¿cual es la influencia que tiene la
How many days in a year ?
Answer:
365 days
Explanation:
Answer:
365
Explanation:
There a 365 days in one year :)
What are the similarities between parents and offsprings
PLEASE HELP ME WITH WITH ASAP!
which statement is true regarding the energy and wavelength of the waves in the electromagnetic spectrum? A The wavelength gets longer and the energy increases. B The wavelength gets longer and the energy decreases. C The wavelength gets shorter and the energy increases. D The wavelength gets shorter and the energy decreases.
Answer:
The answer should be letter D
Explanation:
it's a gizmo for rainfall and bird beaks
Answer:
9.9mm
Explanation:
2. Most male crickets produce a mating song by rubbing together their curved
wings. In a certain geographic area, parasitic flies detected male crickets singing
and deposited their larvae into them, which killed the crickets. Eighteen
generations later, the number of males with flat wings has increased to 90%. The
flat-winged crickets do not sing, but are still able to mate with females, and
parasitic flies cannot detect them. Which type of selection is occurring in this
cricket population?
O
Artificial
O
Directional
O
Disruptive
O
Stabilizing
