The human respiratory system is composed by nose and mouth and continues through the airways and lungs. Air enters the respiratory system through the nose and mouth, passing through the throat (pharynx) and voice box or larynx.
What is the importance of the respiratory system?The respiratory system allows the exchange of gases with atmospheric air, ensuring the concentration of oxygen in the blood, necessary for the body's metabolic reactions, and on the other hand serving as a route for the elimination of residual gases, such as carbon dioxide.
In this case, we can see the multicellular organisms show emergent properties; these are properties that exist due to many different components working together.
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which human evolutionary theory is supported by analysis of maternal inheritance through analyzing mitochondrial dna?
The human evolutionary theory is supported by analysis of maternal inheritance through analyzing mitochondrial dna is; Recent African Origin Theory.
What is human evolution theory?Human evolution theory is simply defined as the lengthy process of change by which people originated from apelike ancestors.
Now, the correct answer to the question will be "Recent African Origin Theory". This is because the "recent African origin" model proposes that all modern non-African populations are substantially descended from populations of Homo sapiens that left Africa after that time.
The description above corresponds with the idea that analysis of maternal inheritance is done through analyzing mitochondrial dna.
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What type of blood vessel carries
oxygen-poor blood back to the
heart?
Answer:
veins
Explanation:
Veins carry oxygen-poor (deoxygenated) blood back to the heart, whereas arteries carry oxygen-rich blood away from the heart.
Explanation:
as blood travels through the body, oxygen is used upand the blood become oxygen poor. oxygen-poor blood returns from the body to the heart through Superior vena cava and inferior vena cava, the two main veins that Bring blood back to the heart. this is my answerA family released their pet fish family into a local pond. The fish had no known local population. The impact of the fish on the ecosystem is not yet known.
Which term would best define the fish added to the pond?
The term that would best define the fish added to the pond is introduced species.
What is introduction of a species?Adaptation to the conditions of the place in which it was inserted, the absence of predators and degradation are the main factors that lead an exotic species to become invasive, competing with native species for resources and causing a great impact on the community.
In this case, the introduced species are exotic species which has arrived there by human activity, may even be harmful to the entire ecosystem because they can break the delicate equilibrium of the ecosystem.
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Answer:
A family released their pet fish family into a local pond. The fish had no known local population. The impact of the fish on the ecosystem is not yet known.
Explanation:
introduced species
Using complete sentences, explain how large-scale agriculture leads to increased atmospheric co2.
Large-scale agriculture will definitely lead to increased atmospheric carbon dioxide. This is due to the attribute that the amount of oxygen released by agricultural plants increases and filters the air that contains toxic gases like carbon monoxide and vamoosing it with CO2.
What is Atmospheric CO2?Atmospheric CO2 may be defined as the amount and quantity of carbon dioxide that is generally present in the atmosphere by the activity of burning fossil fuels, automobile emissions, etc.
It is true that large-scale agricultural activities purify the atmosphere by eliminating all poisonous gases like CO, SO2, etc. This activity is generally performed by the overproduction of carbon dioxide through agricultural plants.
Therefore, it is well described above.
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An example of a diatomic molecule is:
O2
NaCl
Na
H2O
Answer:
O2
Explanation:
diatomic molecules are chemically compounded
Write a short description of the life cycle of a flowering plan
Answer:
Flowering plants begin as seeds. These seeds store energy and food within them long enough to reach the right environment and germinate. Germination is the development of a plant, growing from a seed into a seedling. Seedlings are the second stage of a flowering plant's life. This is when their roots begin to form and photosynthesis can begin. Next comes the growth period. After the seedling is planted, it requires a lot of food and energy as more leaves begin to emerge. The next stage of a flowering plant's life is the flowering stage itself. This is when buds and flowers begin to sprout. It enters the reproductive stage and pollination begins, allowing more seeds to be sown.
on area is 10m * 10m and 6 quadrants of 0.5 * 0.5m where set randomly and counted six five four three two and one grass respectively how many grasses would be found in the whole area
Design a laboratory-based experiment to test the hypothesis that algae need light to grow.
The same algae is subjected to conditions in which one is exposed to light and another is not exposed to light while the nutrients in the both systems are kept the same.
What is algae growth?The growth of algae is the process by which the organism increases in size. Now we know that that the algae is photosynthetic hence light must be required for its growth.
In order to verify this, the same algae is subjected to conditions in which one is exposed to light and another is not exposed to light while the nutrients in the both systems are kept the same.
The results of this experiment must confirm that the algae exposed to light grows better than the algae that was not exposed to light.
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Fig. 6.1 shows four species of myriapod, not drawn to the same scale.
Polydesmus
denticulatus
1
Fig. 6.1
(a) State three features of all myriapods that are visible
Answer:
Many pairs of legs.Two body sections (head and trunk)One pair of antennae on the head.What phase of mitosis is shown in the
diagram below
Answer:
prophase
Explanation:
Reviewing Meiosis:
1. How many cells are present and how many chromosomes are present in the cell at each stage?
start of Meiosis____
end of Meiosis 1_____
end of Meiosis 2____
Start of Meiosis = 1 cell 1 pair of chromosomes
End of Meiosis 1 = 2 cells crossed over chromosome (combined genes 1 in each cell = 2)
End of Meiosis 2 = 4 cells, 1 chromatid in each (4)
I hope it helps!
Help me anyone, please !!!!
When a person needs transfusion, the link on compatibility (option A) is most apt.
What is genotype?The genotype of an individual is the number of genes that the individual possess.
Using the Mendel crossing, we can see that if the parents are AB and AO one offspring will have type A blood.
If we look at the chart, we can see that the blood type A and B are both codominant and are dominant over O hence option K is correct.
When a person needs transfusion, the link on compatibility (option A) is most apt.
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Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is homozygous and has green-colored pods?.
The cross between parent plants if one is heterozygous for yellow pods and the other is homzygous for green pods - Yy yy., i.e., option A.
What is heterozygous?The occurrence of different types of alleles is referred to as heterozygous condition.
A heterozygous genotype may consist of one normal allele and one mutated allele, or two distinct mutated alleles.
The missing options of the question are:
Yy ´ yyYY ´ yyYy ´ Yyyy ´ yyThe cross between parent plants if one is heterozygous for yellow pods and the other is homzygous for green pods - Yy yy.
Thus, the correct option is A.
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Answer: Yy’ yy
Explanation:
because I said so
Which of the following abiotic factors might have an effect on how much photosynthesis can occur by the producers in an ecosystem?
The temperature in the environment.
The temperature in the environment.
The water quality in the environment.
The water quality in the environment.
The air quality in the environment.
The air quality in the environment.
All of the above can affect photosynthesis.
Abiotic factors such as temperature, water quality, air quality, soil quality, and sunlight efficiency affect the rate of photosynthesis. Thus, the correct option is D, i.e. All of the above can affect photosynthesis.
What is Photosynthesis?Photosynthesis may be defined as a process through which green plants synthesized their own food (glucose) via carbon dioxide and water in the presence of sunlight.
The rate of photosynthesis primarily depends on the numerous abiotic factors which are present in a particular environment.
For example, Desert plants accomplish photosynthesis by the CAM pathway, which requires less water as compared to rainforest plants.
The maximum rate of photosynthesis occurs in the region of photosynthetically active radiation (PAR), which belongs to the wavelength of 400nm-700nm.
Therefore, it is well described above.
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generally speaking, fossils can form when organisms choose one: a. travel over gravels and leave imprints. b. are preserved in recrystallized limestone called marble.
Fossils can form when organisms travel over gravels and leave imprints.
How fossil can formed?Fossils are formed when a living organism i.e. plant or animal dies and quickly buried by sediment. When burred into the soil they leave their imprint on the surrounding environment.
So we can conclude that fossils can form when organisms travel over gravels and leave imprints.
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Which of the following questions could best be explored using a scientific investigation?
An empirical scientific question is one that focuses on things, creatures, or occurrences in our immediate environment. By examining quantifiable data and supporting evidence, it can be resolved by experimentation, observation, or other data collection methods.
These questions are appropriate scientific questions and can be tested using the scientific method:
a) The color of Handragea flowers can be studied by growing it in different soils with different pH values and the result can be noted.
b) The properties of soil affecting color of flowers can be studied by growing the flowers in different types of soils like clay, sand, nutrient rich, nutrient deficient, silt, etc.
e) If the grass requires fertilizer one set of grass can be grown without fertilizer while one set can be grown with fertilizer to check the query.
There are limitations to the scientific process. Only quantitative data from observable, quantifiable, and repeatable experiments can it provide objective answers to questions. It is unable to respond to introspective queries based on qualitative judgments or beliefs hence, other options will be incorrect.
Hence, The following questions are considered appropriate scientific questions that can be tested using the scientific method.
a. Does the pH of the soil affect the color of hydrangea flowers?
b. What properties of the soil influence the color of hydrangea flowers?
e. Does grass require fertilizer in order to grow?
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Answer:
The answer is how many seeds are in an apple
Explanation:
EASYYY IM TIRED, IVE BEEN ON 2 REDBULLS TRNA STAY AWAKE DOING HW. I NEED HELP WITH THIS ONE QUESTION SO I CAN GTS!!!!
What would happen if you decreased the amount of light available to the model biosphere?
Answer:
the Vajpayee is a term that ecompasses all the ecosystem from the Earth it there for increase both non living elements like sunlight and water and leaving organisms
Explanation:
hope it is helpful
Answer:
Explanation:
: There's only one stable, long-lasting biosphere that we know of. It's the Earth. It shouldn't surprise you that human attempts to create sealed systems don't generally fare very well. The International Space Station, despite efforts to recycle everything possible (including converting urine to drinkable water--do you still want to be an astronaut?) to reduce costs, couldn't sustain life for long without a steady supply of provisions from, and garbage hauling back to, Earth. You know they try hard because, if all goes as planned, it costs about $10,000 to put a pound of payload (supplies) into Earth orbit. The BioSphere 2 project in Southern Arizona was an interesting and costly effort, but the original studies weren't very scientific and it proved quite difficult to keep just a handful of humans alive for a relatively short period of time. You can buy tiny sealed marine ecosystems enclosed in glass. They are beautiful curiosities, but the one I bought for my wife lasted less than a year before crashing. Among the crazier justifications for space exploration is that when (note the assumption of inevitability) we ruin the Earth, we will need new places to live (and, presumably, ruin). Unless or until we can do a lot better at building self-contained ecosystems, it would be a far better use of human effort to focus on preserving the only one we've got. Not only that but, if we make the Earth uninhabitable, I'm not sure we deserve to live somewhere else. But the challenge itself is interesting, and the scientific questions you can ask in the process of understanding, building, and trying to maintain such a system are valid. We're going to give it a try. Good luck! There's a Nobel Prize in it.
how do the human nervous and endorcrine systems work together
The endocrine system, along with the nervous system, coordinates the body's functions to maintain homeostasis during rest and exercise. The nervous and endocrine systems also collaborate to initiate and control movement, as well as all of the physiological processes that movement entails.
What is endocrine system?The endocrine system is a web of glands and organs. It controls and coordinates your body's metabolism, energy level, reproduction, growth and development, and response to injury, stress, and mood using hormones.
The endocrine system, along with the nervous system, coordinates the body's functions to maintain homeostasis during rest and exercise.
The nervous and endocrine systems also collaborate to initiate and control movement, as well as all of the physiological processes that movement entails.
Thus, the nervous and endocrine systems work together to carry out the coordination of the body.
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How many chromatids does a human somatic cell contain after interphase and just prior to mitosis?.
Answer:
Explanation:
92
Carbon fixation occurs in the second stage of photosynthesis, during the light-independent reactions of the Calvin cycle. In the first step of this cycle, the enzyme Rubisco adds CO2 to the energy-rich compound ribulose 1,5-bisphosphate, ultimately producing two molecules of 3-phosphoglycerate. In a culture of green alga that is carrying out photosynthesis in the presence of CO2 in the laboratory, what would happen to the levels of ribulose 1,5-bisphosphate and 3-phosphoglycerate in the minutes after the lights were turned off and the cultures were plunged into darkness
Ribulose 1,5-biphosphate will be depleted while 3-phosphoglycerate will accumulate.
Carbon fixationThe first step of the carbon fixation during which Rubisco adds CO2 to Ribulose 1,5-biphosphate to produce 2 molecules of 3-phosphoglycerate requires energy molecules from the light reaction.
In the subsequent steps, Ribulose 1,5-biphosphate is regenerated in a step that requires energy molecules from the light reaction.
Thus, in the first few minutes of turning off the light, the available energy molecule from the light reaction will be used up to produce 3-phosphoglycerate. However, the regeneration of Ribulose 1,5-biphosphate will become impossible.
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The "collar bone" is also known as the:
According to the research, the collar bone is also known as the clavicle.
What is the clavicle?They are the bones of the human being that are found in the upper sector of the chest, articulating with the acromion of the shoulder blade and the sternum.
This bone is important for the composition of the shoulder joint complex, since it functions as a stabilizer for all parts of the shoulder, and therefore for the arm.
Therefore, we can conclude that according to the research, the collar bone is also known as the clavicle.
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Answer:
clavicle
Explanation:
hope this helps :)
Match the following. Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. ResetHelp 1. : Chemical or mechanical process of breaking down foodstuffs into simpler units. 2. : Wavelike smooth muscle contractions that move foodstuffs through the alimentary tube. 3. : Enzymatic breakdown of any type of food molecule. 4. : Process by which simpler chemical units pass through the lumen of the gastrointestinal tract into the blood or lymph.
Matching the following words to the appropriate blanks
Digestion is Chemical or mechanical process of breaking down foodstuffs into simpler units Peristalsis is Wavelike smooth muscle contractions that move foodstuffs through the alimentary tube Hydrolysis is Enzymatic breakdown of any type of food molecule Absorption is process by which simpler chemical units pass through the lumen of the gastrointestinal tract into the blood or lymph Processes of the digestive systemThe terms associated with the sentences listed are the various processes of the digestive system and they are Digestion ( a process of breaking down consumed food into simpler units for absorption ), Peristalsis, hydrolysis and Absorption which is the last phase of the digestive system.
During absorption the chemical units from the digested food passes through the lumen of the gastrointestinal tract into the blood where they are used by the body for the growth and daily activities of the body.
Hence we can conclude that the words matching the sentences are as listed above
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The missing words matched to the blanks
HydrolysisAbsorption DigestionPeristalsisAero in aerobic and anaerobic respiration stands for?
Owater.
Ohydrogen.
O carbon.
O oxygen.
Question 5: How would you describe the effect of a 1°C increase of temperature on the biodiversity of the habitat in terms of number of populations and number of individuals in the populations? Use evidence from your graph and table to support your answer.
1°C increase of temperature can effect the biodiversity of the habitat in terms of number of populations and number of individuals in the population, it can either increase or decrease the population growth.
1°C increase in temperature on biodiversity can increase or decrease the population growth.
Population growth or change in number of individuals in the population of some organisms increases or decreases with the increase in temperature. The population of certain species such as Nassuar grouperand, Queen angelfish increases with the increase in temperature while some species such as sponges and algae decreased in population with the increases in temperature. This is because some species need high temperature to grow, so even a 1°C increase in temperature increases the population while some species need low temperature to grow, so high temperature kills them and population is decreased.
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What is the founder effect?
A(when an individual is lonely
B(When individuals join a population and their genes merge into the pool.
C) When individuals become isolated from the
larger populations and the gene pool differs
from the original population over time
Answer:
What is founder effect
Explanation:
i think C)
What is the analine blue stained structure in the sample?
The analine blue stained structure in the sample is called; Extracellular tissue
What is the component of the biological structure?From online sources, the analine blue stained structure is a stringy mass beneath the intestinal epithelium that extends into the villi.
Now, Aniline blue binds to extracellular structures such as the fibers in the lamina propria which is the name of the connective tissue beneath the intestinal epithelium.
Finally, the analine blue stained structure is called Extracellular tissue.
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Worldwide, what percentage of human water usage does industry account for? (Note: This relates to water usage now, not water supply.) What is the percentage in the United States?
Worldwide, 19% of human water usage does industry account for. While the percentage of United States withdrawals total of 5% of water usage for industrial purposes.
What percent of water is used in the United States for thermoelectric power?A total of 49% of water is used in the United States for thermoelectric power.
Apart from this, Industrial and manufacturing businesses also utilize about 12 percent of the public water supply in the United States.
Therefore, it is well described above.
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the diaphragm is innervated by the __________ nerve, which allows it to contract.
The diaphragm is innervated by the phrenic nerve, which allows it to contract.
What is phrenic nerve?The C3-C5 spinal nerves, which are parts of the cervical plexus, give rise to the phrenic nerve, a mixed nerve. It begins in the neck and travels through the thorax vertically before terminating on the diaphragm.
The phrenic nerve is bilateral, there are some significant distinctions between the left and right counterparts in terms of its courses and interactions with surrounding structures.
The primary purpose of the phrenic nerve, which makes it an essential part of the physiology of breathing, is to deliver the full motor innervation to the diaphragm.
Diaphragm is controlled by the phrenic nerve (the large dome-shaped muscle between abdominal and chest cavities). It is necessary for breathing. Diaphragm contracts as a result of signals sent by nerve (become thicker and flatter). This motion makes room for lungs to expand and take in air (inhalation).
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Hello can someone help me please and thank:)
Answer:
B- J, L, K
Explanation:
Wrong Subject but the largest side's opposite angle is the largest if that made sense. For example, KL which is the largest side corresponds to the largest angle <J.
Explain what causes menkes syndrome include in your answer the symptoms and life expectancy of the affected person
Answer:
Menkes disease is caused by a defect in the ATP7A gene. The defect makes it hard for the body to properly distribute (transport) copper throughout the body. As a result, the brain and other parts of the body do not get enough copper, while it builds up in the small intestine and kidneys. Menkes syndrome causes impaired copper absorption. This results in changes in the arteries and deterioration of the brain. Menkes syndrome is rare. Most children born with Menkes syndrome have a life expectancy of < 4 years.
Explanation:
