Answer:
Cells produce CO2 and use O2 thats why there is less oxygen in exhaled air bc cells used some and more CO2 bc body gets rid off extra CO2 like that
Explanation:
I hope I did't over complicate
The reason behind the difference in the O₂ and CO₂ concentrations of inhaled and exhaled air is the consumption of O₂ by cells of our body and the release of CO₂ during the process of cellular respiration.
What is the concentration of gases in inhaled and exhaled air?Inhaled air is not pure oxygen or carbon-di-oxide, it is a mixture of gases that contains different kinds of gases like Nitrogen, Argon, Oxygen, and carbon-di-oxide, etc. Their composition is different from each other.
Inhaled air contains 20.9% oxygen, 0.04% carbon-di-oxide, 79% nitrogen, 1% argon, and 0.5% water vapors. Exhaled air contains 14% oxygen, 5.60% carbon-di-oxide, 79% nitrogen, and 1% argon.
When we inhale air from the environment, all these gases along with oxygen reach the cells without filtering. During cellular respiration, cells use oxygen for aerobic respiration and release CO₂ as a bi-product.
Therefore, oxygen concentration decreases in exhaled air, and carbon-di-oxide concentration increases.
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which of the following could never be part of the bark? group of answer choices cortex secondary xylem primary phloem phelloderm secondary phloem
The only option that could never be part of the bark is the Secondary Xylem. Here option B is the correct answer.
Cortex: The cortex is the region of tissue located between the epidermis and the vascular tissues (xylem and phloem) in the stem or root of a plant. It is commonly present in the bark, providing structural support and conducting materials. Therefore, the cortex can be part of the bark.
Secondary Xylem: Secondary xylem, also known as wood, is responsible for providing structural support to the tree. It is formed internally to the bark by the vascular cambium. While it is an essential component of the tree trunk, it is not part of the bark itself.
Primary Phloem: Primary phloem is the outermost tissue of the vascular bundle, responsible for transporting sugars and other organic compounds produced by the leaves. It is commonly present in the bark and contributes to its composition. Therefore, the primary phloem can be part of the bark. Therefore option B is the correct answer.
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Complete question:
Which of the following could never be part of the bark?
A) Cortex
B) Secondary Xylem
C) Primary Phloem
D) Phelloderm
E) Secondary Phloem
Elevation and Red Blood Cell Count
It is hypothesized that runners who live "high" and train "low" have higher EPO and RBC counts. Below is the data to predict the RBC count based on the living elevation of various Olympic athletes.
a = 6.06
b = .00067
Find the following athlete's RBC count (in uL's) based on their housing elevation of 1400 meters
Select one:
a. 6.998 uL's
b. None of the answers provided
c. 8484.067 uL's
d. 6.067 uL's
To find the athlete's RBC count (in uL's) based on their housing elevation of 1400 meters, we can use the given equation:
RBC count (in uL's) = a + b * elevation
Substituting the values provided:
a = 6.06
b = 0.00067
elevation = 1400
RBC count = 6.06 + 0.00067 * 1400
RBC count = 6.06 + 0.938
RBC count ≈ 6.998 uL's
Therefore, the athlete's RBC count based on their housing elevation of 1400 meters would be approximately 6.998 uL's.
The correct answer is:
a. 6.998 uL's
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Which of the following statements regarding phagocyte recognition of pathogens is true?A) TLRs in the phagocyte cytoplasmic membrane bind surface structures of microbes.B) TLRs on the surface of microbes trigger the accumulation of opsonins.C) Lectins on the surface of microbes are bound by chemokine receptors.D) NOD proteins on the surface of microbes are detected by TLRs.E) MACs on the surface of microbes are detected by NOD proteins.
Answer:
Explanation:
The correct statement regarding phagocyte recognition of pathogens is:
A) TLRs (Toll-like receptors) in the phagocyte cytoplasmic membrane bind surface structures of microbes.
TLRs are a class of pattern recognition receptors (PRRs) present on the surface or within cells of the immune system, including phagocytes. These receptors recognize specific molecular patterns associated with pathogens, known as pathogen-associated molecular patterns (PAMPs). PAMPs are typically conserved components of microbes, such as bacterial cell wall components or viral nucleic acids.
When a phagocyte encounters a pathogen, TLRs on its cytoplasmic membrane can recognize and bind to the surface structures of the microbes, triggering intracellular signaling pathways. This recognition leads to the activation of the phagocyte and the initiation of the phagocytosis process to engulf and eliminate the pathogen.
Therefore, option A is the correct statement: TLRs in the phagocyte cytoplasmic membrane bind surface structures of microbes.
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What has happened over the past forty years that might have changed things in california water
Explanation:
Overall, 25% of California adults named water shortages and drought as the most important environmental issue currently facing the state. Not far behind, 17% named wildfires, followed by 13% who cited climate change and 6% who named air pollution.
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if an artery that supplies blood to a lung lobe was blocked but ventilation to the lobe was unaffected, how would alveolar gas partial pressures change? reddit
Alveolar gas partial pressures change as Oxygen partial pressure increases in the lungs and the partial pressure of carbon dioxide decreases.
Because the artery is blocked, you will not be able to effectively exchange O2 and CO2; consequently, you will have greater partial pressure of O2 in the lungs than you normally would, and artery cannot effectively supply the CO2 that was produced to get expired, resulting in a decrease in CO2 partial pressure. Ventilation is unaffected, meaning that you are still breathing normally (no problem with inspiration or expiration).
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Organization:
1. Is your organism unicellular or multicellular? Prokaryotic or Eukaryotic? Describe the cells.
2. What unique physical characteristics does it have? (Color, shape, size, body systems, etc.)
Response to Stimuli:
3. What type of environment does your organism live in? (Forest, trees, ocean, far away planet, etc.)
4. How does your organism respond to its environment? (In other words, does it have a strong reaction to
light, pain receptors, breathe oxygen, senses, etc.)
Eukaryotic cells are fungi and protists and plants and animals; prokaryotic cells include bacteria Paramecium, a unicellular organism, is prokaryotic Since it is made of many cells, a bacterial colony is a multicellular organism.
An independent variable is:
A. Remain the same to make an experiment a fair test.
O B. Measured to show the effect of a change.
C. Collected to draw conclusions.
D. Changed to test a hypothesis.
Answer:
The answer is (changed to test a hypothesis)
Explanation:
thats what the definition is
hii please help i will give brainliest to whoever is correct! :)
Answer:
Answer down below!
Explanation:
Answers ranging from top to bottom:
GlucoseCarbon DioxideWaterOxygeni'll give you 50 points Homeostatic mechanisms work continuously to maintain stable conditions in the human body. Using the model provided, explain how feedback mechanisms maintain blood sugar levels. Choose ALL Three that apply.
When blood sugar levels are too low, glucose is released from glycogen where it's stored.
This is an example of a negative feedback mechanism because the initial stimulus is reversed.
This is an example of a positive feedback mechanism because the initial stimulus is enhanced.
When blood sugar levels are too high, the pancreas releases insulin to store excess glucose as glycogen.
When blood sugar levels are too high, the pancreas releases insulin to store excess glucose as glucagon.
Answer:
I think it’s these 3 based off my current knowledge and the internet
When blood sugar levels are too low, glucose is released from glycogen where it's stored.
When blood sugar levels are too high, the pancreas releases insulin to store excess glucose as glucagon.
This is an example of a negative feedback mechanism because the initial stimulus is reversed.
Explanation:
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Answer: The Answer is negative feedback because i just got it write on my online SG
Explanation:
trust me bro
_ If the cheetah population decreases, what would happen to the gazelle populations
Answer) increase
Answer:gazelle populations would increase if the cheetah popu;ations increasedExplanation:
Was John's hypothesis supported or rejected? Use data to discuss this. Which fertilizer worked the best? Explain your answer using data from your table. Which plant did not grow well? Explain your answer using data from your table. Describe how the investigation could be tested further.
a. John's hypothesis that organic fertilizer would make the plants grow taller was not supported.
b. the chemical fertilizer worked the best in promoting plant growth compared to the organic fertilizer and the absence of fertilizer.
c. The plant that did not grow well was the one without any fertilizer.
d. One can further test the investigation by increasing the sample size and repeat the experiment.
How do we calculate?a. Based on the data provided, John's hypothesis that organic fertilizer would make the plants grow taller was not supported but the plant with the chemical fertilizer grew the most.
b. The plant with organic fertilizer showed some growth but was consistently shorter than the plant with chemical fertilizer. The plant without any fertilizer showed minimal to no growth, indicating that fertilizer, whether organic or chemical, is necessary for optimal plant growth.
c. The plant that did not grow well was the one without any fertilizer as it had minimal growth throughout the observation period, with a final height of only 0.2 cm on day 10.
d. Increasing the sample size instead of using only one seed per pot, multiple seeds could be planted in each pot to account for individual variation and enhance the statistical reliability of the results.
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Complete question:ohn had a science fair project that he needed to do. He wanted to test the effects that organic and chemical fertilizers had on plant growth. John predicted that the organic fertilizer would make the plants grow taller. He used three pots, three of the same type of seed, soil, organic fertilizer, chemical fertilizer, water, and a ruler. John put soil in the pots. He added chemical fertilizer to the first pot, organic fertilizer in the second pot, and no fertilizer in the third pot. He then planted one seed in each pot. John had to water the pots daily. He also checked for growth and took measurements for a period of 10 days. He measured the height of the plants.Days No Fertilizer (cm) Chemical Fertilizer (cm) Organic Fertilizer (cm)1 0 0 02 0 0 03 0 0 04 0 0 05 0 0.5 06 0 1.3 07 0 1.9 0.38 0 2.2 1.69 0 4.5 3.210 0.2 5.2 3.8John made a data table to record his measurements.After the 10th day, John observed that the plant with the chemical fertilizer grew the most.Was John's hypothesis supported or rejected? Use data to discuss this. Which fertilizer worked the best? Explain your answer using data from your table. Which plant did not grow well? Explain your answer using data from your table. Describe how the investigation could be tested further.
Trade winds blow from the horse latitudes toward the______.
equator
the tropics
the poles
Answer:
The correct answer is - the equator.
Explanation:
The trade winds are the kind of wind that blows towards the equator from the southeast in the southern hemisphere or the northeast in the northern hemisphere, especially at sea.
The horse latitudes are present in both the northern hemisphere and southern hemisphere with calm air and occur between trade winds and the westerlies that move towards the equator.
PLEASE HELP Due Today
List two examples of how chemical or nuclear energy can be transformed.
1. The sun transforms nuclear energy into heat and light energy.
2. Chemical reaction is a chemical substance that can be transformed to other forms of energy. As an example, when a fuel is burned the chemical energy of molecular oxygen is converted to heat, and the same is the case with digestion of food metabolized in a biological organism.
Answer:
Explanation:
for chemical energy is can be transformed in several ways since it is potential energy it can be transformed into kinetic energy or into electrolysis because batterys contains energy within.
nuclear energy can be transformmed into a fission reaaction which helps provide nergy to large cities or the fusion reaction which is the sun providing light for all our needs!
Which of the following is true?
O Rivers account for most of the earth's surface water
O Earth's water = 60% Ocean and 40% Freshwater
O Glaciers and Icecaps account for most of the freshwater on earth
O Most of the earth's freshwater is groundwater like rivers and lake
Answer:
C. Glaciers and Icecaps account for most of the freshwater on earth
Explanation:
Glaciers and icecaps make about 68.7% of the freshwater we have here on earth.
I hope it helps! Have a great day!
Sandra~
Answer:
C.
Explanation:
Glaciers and icecaps make about 68.7% of the freshwater we have here on earth, so that would make the answer C.
I hope it helps! Have a great day!
bren~
Cells have different membrane carbohydrates if they do different ______.
Help!! does anyone know the answer??
Answer:
i think its osmosis
Explanation:
Order the steps that occur as a protein is synthesized within a cell and finally excreted for use outside of the cell.
Answer:
1. The protein is synthesized within the cell using the information in the cell's DNA.
2. The protein is folded into its final shape.
3. The protein is transported to the cell membrane.
4. The protein is excreted from the cell, typically with the help of special protein-transporting molecules.
5. The protein is now outside of the cell and can be used for its intended purpose.
Explanation:
can anyone help??? much appreciated
Answer:
I think true or maybe false don't mind ok but ithink it is true
Answer:
true
Explanation:
they use energy from the sun to convert water from soil and CO2 from the air to make nutrients like glucose
Human brain chemistry can be affected by psychoactive drugs, behavioral addictions, and mental illness, to induce an altered state of consciousness.
A. true
B. false
It is true that human brain chemistry can be affected by psychoactive drugs, behavioral addictions, and mental illness, leading to an altered state of consciousness.
Human brain chemistry can indeed be affected by various factors, including psychoactive drugs, behavioral addictions, and mental illness. These factors have the potential to induce changes in brain neurotransmitters, receptors, and neural circuits, leading to an altered state of consciousness.
Psychoactive drugs, such as stimulants, depressants, hallucinogens, and opioids, interact with the brain's chemical signaling systems, affecting neurotransmitter levels and altering brain activity. These alterations can lead to changes in perception, mood, cognition, and consciousness.
Behavioral addictions, such as gambling addiction or internet addiction, can also affect brain chemistry by triggering reward pathways and dopamine release, resulting in changes in motivation, decision-making, and consciousness.
Furthermore, mental illnesses, such as depression, anxiety disorders, or schizophrenia, involve disturbances in brain chemistry and neural functioning, which can profoundly impact an individual's thoughts, emotions, perceptions, and overall state of consciousness.
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Which of the following is not a form of energy
mechanical
heat
matter
solar
Answer:matter
Explanation:foundonweegy
The top strand of the DNA molecule was used as a template to transcribe the mRNA
Agree
Disagree
Why
Answer:
The upper strand of DNA is the "mRNA-like" strand. The lower strand is the strand that is complementary to the mRNA. The -35 region (TTGACA) and -10 region (TATATT) of the promoter sequence and the transcriptional start site (the A) is indicated on the coding strand.what is the advanced character of eukaryotic nucleus?
Answer:
nucleus, membrane-bound organelles, and rod-shaped chromosomes. The nucleus houses the cell's DNA and directs the synthesis of proteins and ribosomes. hope this helps :)
Explanation:
a.) Describe a renewable energy source that would be appropriate for the area you live in. Explain why the characteristics of this energy source are appropriate for your area
b.) Describe one possible drawback of your energy source
Sunlight energy is the renewable source appropriate for the area we live.
What is renewable energy?Renewable energy refers to clean energy that comes from natural sources which are constantly replenished. For example, sunlight or wind. Our region gets sunlight with more intensity so we can conclude that sunlight is the energy source appropriate for our area.
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What type of phylogenetic tree is most accurate?
The most accurate type of phylogenetic tree is the cladogram.
A cladogram is a diagram that shows the evolutionary relationships between different groups of organisms. It is based on the principle of cladistics, which uses shared characteristics to group organisms into clades, or groups of related organisms. Each clade includes an ancestor and all of its descendants.
Cladograms are considered the most accurate type of phylogenetic tree because they use the most current and accurate data available. They also take into account both morphological and molecular characteristics, which helps to provide a more complete picture of evolutionary relationships.
Other types of phylogenetic trees, such as phenograms and phylograms, may also provide useful information about evolutionary relationships, but they are not considered as accurate as cladograms.
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the trancelike state in which a subject responds readily to suggestions is ________.
the trancelike state in which a subject responds readily to suggestions is Hypnosis
Hypnosis is a trancelike state in which a person becomes highly responsive to suggestions. During hypnosis, a person's attention and focus become heightened, while their peripheral awareness diminishes. This allows for suggestions to be more easily accepted and acted upon.
Hypnosis is often used in therapy to help individuals overcome issues such as anxiety, phobias, and addiction. It can also be used for pain management and to improve performance in sports or other activities. Despite its common portrayal in media as a form of mind control, hypnosis is a voluntary state that requires the person's cooperation and willingness to participate.
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A student removes the shell of an egg exposing the semi-permeable membrane underneath. Because of the
egg's yolk, it has a solute concentration of about 2.0 g/dL. If the student places the egg into pure water for 24
hours, in which direction will water flow?
A. Into the cell
B. Out of the cell
C. Into and out of the cell at an equal rate
D. Water will not move at all
Answer: B. out of the shell
Explanation:
hope it helps:)
What is the normal/average pH level of lake in a healthy ecosystem?
Usually fresh water lakes have a pH range between 6.5 to 8.5, this is appropiate for many organisms life and development.
HOW DO THESE MOLECULES COMPARE TO THE ORIGINAL
Answer:
whats the question here
Can someone please help me for questions 2
Using a metal spoon instead of disposable spoons is an example of…….