The intraluminal pH is rapidly changed from highly acid in the stomach to about pH 6 in the duodenum. The pH gradually increases in the small intestine from pH 6 to about pH 7.4 in the terminal ileum. The pH drops to 5.7 in the caecum, but again gradually increases, reaching pH 6.7 in the rectum.
The pH of the stomach is acidic while that of small intestine is slightly alkaline.
What is pH?
This is referred to as the power of hydrogen and is the measure of the degree of acidity or alkalinity of a substance.
The stomach contains dil. Hcl which makes it acidic while the small intestine is alkaline because of the presence of bile.
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An immunocompromised host is one who shows a decrease in ______.
An immunocompromised host is one who shows a decrease in the ability to mount an immune defense to infection because the immune system is damaged and it is weak which can not fight infections.
What is immunocompromised host?An immunocompromised host refer to a person whose immune system is weak or damage and does not have tye ability to fight incoming infections.
Therefore, An immunocompromised host is one who shows a decrease in the ability to mount an immune defense to infection because the immune system is damaged and it is weak which can not fight infections.
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What percent of organic matter sink into deeper water where it may be removed effectively from the atmosphere?
The percentage of organic matter which sinks into deeper water is; 10%.
What is organic matter?The percentage of organic matter produced in the euphotic zone and which subsequently, sinks to deep waters is 10%.
This can be attributed to the fact that 90% of the organic matter produced in the euphotic zone is decomposed in the euphotic zone.
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1. What type of evidence must molecular clocks be compared against to estimate the split from a common ancestor?
The fossil record is the type of evidence that is used with molecular clocks to estimate the split from a common ancestor.
What is a molecular clock?A molecular clock is an estimation of the times of divergence used for the study of biological phenomena.
Molecular clocks are based on fossils found for a given species and the mutation rate of a given genomic sequence.
In conclusion, fossils are used as point of reference to build molecular clocks based on the mutation rate of homo-logous nucleotide sequences for a given taxonomic group for which these fossils belong.
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During an action potential, the rapid decrease in sodium permeability and simultaneous increase in potassium permeability is responsible for __________.
the repolarization of the cell.
Mechanism :
Action potentials are signals that are sent and received by muscle and nerve cells. Because of the negative concentration gradient in the resting membrane potential of nerve cells, there are more positively charged ions outside the cell than inside. There are more sodium ions outside the cell and more potassium ions within because these positively charged ions are sodium ions. Action potentials cause the membrane to depolarize, which is followed by the process of repolarizing the cell. The membrane potential changes and reverts to the negative value of the resting potential during repolarization. The potassium channels open and the sodium channels close at this stage, allowing the nerve cell to lose positively charged ions.
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Place the following statements in the correct order in the blanks below to describe how
glucose is transported from the palisade cells to the rest of the plant. Statements may be
used once.
a. Water enters the phloem through osmosis
b. Water exits the phloem through osmosis
c. Glucose is actively transported into the phloem
d. Glucose is actively transported out of the phloem
e. Pressure from the leaves pushes the water and glucose through the phloem
f. An area of low glucose concentration is reached
____ ____ ____ ____ ____ ____
The correct order in the blanks are as follows: C A E F G B
c. glucose is actively transported in to the phloem
a. Water enters the phloem through osmosis
e. Pressure from the leaves pushes the water and glucose through the phloem
f. An area of low glucose concentration is reached
g. Glucose is actively transported out of the phloem
b. Water exits the phloem through osmosis
What is translocation?
The transport of sugar created during photosynthesis to all other areas of the plant for respiration and the other activities mentioned above is known as translocation.
Utilizing light energy, plants use photosynthesis to convert the inorganic chemicals carbon dioxide and water into glucose. Respiration uses a portion of the glucose created by photosynthesis. The seven biological processes receive energy as a result.
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Binomial nomenclature gives people their first and last names, such as John Doe
True
False
Answer:true
Explanation:
Answer:
False.
Lets look about a Binomial nomeclature.
Explanation:
Binomial NomenclatureThis is the scientific system of naming organisms whereby each name is made up of two latin words;Generic name from the Genus of the organism and Specific name from the Species of the organism.Common examples of organisms names with their scientific names as named by this system includes:Organism Scientific nameHuman being Homo sapiensDomestic cat Felis catusHousefly Musca domesticaAre microorganisms best suited for dry, warm environments?
Answer:
The most significant effect of the microbes on earth is their ability to recycle the primary elements that make up all living systems, especially carbon, oxygen, and nitrogen (N). Primary production involves photosynthetic organisms which take up CO2 from the atmosphere and convert it to organic (cellular) material.
The kidneys are highly vascular organs. Approximately how much of the entire circulating blood volume do the kidneys process at any one time?
The percentage of the entire circulating blood volume that the kidneys process at any one time is 20 percent.
What is kidney?It should be noted that kidney beans the bean shaped organ that we located below the rib cage. The kidney is responsible for waste removal in the body.
In this case, the percentage of the entire circulating blood volume that the kidneys process at any one time is 20 percent.
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which statement is false about base stacking when nucleic acids are in a double-stranded conformation?
The statement that is false about base stacking is; B. Stacking interactions are hydrophilic in nature.
What is the truth about Base Stacking?Base stacking is defined as a common arrangement of nucleobases that are found in the three dimensional structure of nucleic acids. Bases (or base pairs) are planar, and these planes stack at contact distance , excluding water and maximizing Van der Waals interactions.
Looking at the given options, the only one that can be said to be false about the defined base stacking above as regards nucleic acids is option B.
The missing options are;
A. Stacking interactions occur when two or more bases are positioned with their rings parallel to each other.
B. Stacking interactions are hydrophilic in nature.
C. Stacking involves a combination of van der Waals and dipole-dipole interactions between bases.
D. Base stacking helps to minimize contact of the bases with water.
E. Base stacking interactions are important in stabilizing the three-dimensional structure of nucleic acids.
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which statement about the elongation phase of protein synthesis is true?
The statement that is true about elongation phase of protein synthesis is that Peptidyl transferase is a ribozyme.
What is Protein synthesis?Protein synthesis is defined as the process biological systems use to produce new molecules of proteins.
Peptidyl transferase is a type of enzyme called ribozyme which is responsible for peptide bond formation during protein synthesis.
Therefore, the statement that is true about elongation phase of protein synthesis is that Peptidyl transferase is a ribozyme.
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according to the avma, which method is acceptable, when used by itself, for euthanasia of rabbits?
According to the avma, the acceptable method, when used alone, for the euthanasia of rabbits are barbiturates and barbituric acid derivatives.
What is the method of euthanasia in rabbits?Recommended methods of euthanizing rabbits depend on the facilities and conditions in which the animals are housed and maintained. in a controlled as a biomedical research facility where researchers have access to restraint devices and controlled drugs, intravenous injection of barbiturates is generally used.
With this information, we can conclude that according to the avma, the acceptable method, when used alone, for the euthanasia of rabbits are barbiturates and barbituric acid derivatives.
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how does a catalyst work ?
Answer:
Magic.
Explantion:
Magic from the catalyst.
Why is there no output from the photo-electric cell when the RLG is not moved?
There is no output from the photoelectric cell when the RLG isn't moved because the laser beams are 180 degrees out of phase.
What is a photoelectric cell?A photoelectric cell is also known as phototube and it can be defined as an electronic tube (device) that is fitted with a photosensitive cathode, which emits electrons when illuminated, as well as an anode that collects the emitted electrons.
Based on scientific research and experiment, we can logically deduce that there is no output from the photoelectric cell when the ring laser gyro (RLG) isn't moved because the laser beams are 180 degrees out of phase.
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How does phosphorylation control protein activity?.
Answer:
Phosphorylation offers a dynamic way to regulate protein activity and subcellular localization, which is achieved through its reversibility and fast kinetics. Adding or removing a dianionic phosphate group somewhere on a protein often changes the protein's structural properties, its stability and dynamics.
Explanation:
Which concept is part of the theory of evolution by natural selection
Answer:
New generations are better suited to survive than previous generations.
Explanation:
Darwin's evolutionary theory states that evolution is the slow process through which organisms change over time. Natural selection is the process by which evolution takes place. Variation in organisms, some of which offers an adaptive benefit, may be passed down from generation to generation. Better suited organisms will have a higher probability of surviving and procreating, and they will also pass on these phenotypic modifications to the offspring. Evolution is a long, protracted process because these phenotypic changes occur gradually across generations at the species level. As a result, it is anticipated that future generations would be better adapted to endure in the same environmental circumstances.
Carbonization is a type of fossilization that:
The characteristic of fossil fuel is that; it creates a 2D film of residue where an organic object used to be.
What type of fossilization is Carbonization?Carbonization as a means of fossilization is characterized by the fact that: it creates a 2D film of residue to replace an organic object used to be. On this note, it follows that the fossil record in this scenario is biased towards preservation of organisms with characteristic hard parts like shells.
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A scientist is examining a simple multicellular organism with a nucleus and specialized organelles that was found in a moist environment. What kingdom does this organism belong to?.
Answer:
Kingdom Protista
Explanation:
They have a nucleus, are multicellular, and prefer moist enviornments.
pls help
question b and c
The sodium ions and potassium ions move between the plant cell and pond water by the process of diffusion.
What is diffusion?
Diffusion is the process by which substances move from region of high concentration to regions of low concentration.
Based on the chart, sodium ions and potassium ions move between the plant cell and pond water by the process of diffusion.
This is because the ions are at higher concentration in the pond water.
During the process, the ions move through ion channels in and out of the plant cell from the pond water.
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The ________ communicates with the lower bladder to enable excretion of urine from the body.
The urethra is an organ which communicates with the lower bladder in order to enable excretion of urine from the body of a living organism.
What is an excretory system?An excretory system refers to a living system that is saddled with the responsibility of removing waste products from the body of a living organism, so as to prevent damage to the body and help maintain homeostasis.
Based on scientific information, the urethra is an organ which communicates with the lower bladder in order to enable excretion of urine from the body of a living organism.
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Alpa wants to change 0.54 kilometers into a smaller metric unit. She will have to
The correct answer is that she has to multiple
Multiple
Explanation:
Hope its help
Hope its help
If there is gene flow between two adjacent populations of the same species, then the two populations will
If there is gene flow between two adjacent populations of the same species, then the two populations will have similar gene pools.
What is gene flow?Gene flow is the movement of genes within a population or between two or more populations of organisms as a result of mating that occurs between the species.
Gene flow between two populations ensures similarity between the gene pool of the populations.
Therefore, if there is gene flow between two adjacent populations of the same species, then the two populations will have similar gene pools.
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2.how are the amino acids formed from the codon in mutation #2 different from those formed from the original codon pattern.
The codons are read on the amino acid table and the amino acid is determined.
Two amino acids different from those formed from the original codon pattern are methionine and tryptophan.
How are amino acids formed from codonsThe three-letter nature of codons means the four nucleotides found in mRNA
A stands for adenine
U stands for Uracil
G stands for guanine
C stands for cytosine
They produce a total of 64 different combinations but only 61 represent amino acids, the remaining three are STOP signals.
For instance, AUG is a codon that is read as methionine in the amino acid table.
Hence, the codons are read on the amino acid table and the amino acid is determined.
Two amino acids different from those formed from the original codon pattern are methionine and tryptophan gotten from one single codon.
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Which of the following is NOT a benefit of the process of Photosynthesis evolving on Earth?
A. Increase in atmospheric O2
B. Filtering of UV light
C. Reduction of atmospheric CO2
D. Increase in atmospheric Nitrogen
abc or d with a simple rundown
Answer:
I think the answer is C. Reduction of atmospheric CO2
Explanation:
I hope this helps! Correct me if I am wrong.
Freshwater leeches attach to fish and suck blood from the fish for extended periods of time. This results in sores on the fish that often become infected.
This relationship is best described as
Answer:parasitism
Explanation:
the leeches benefit but cause the fish harm I’m not sure if this is the type of answer you needed hopefully it helps
Answer:
It's called Parasitism. As these leeches live outside the fish body so they are Ectoparasites.
What is the innermost layer of an artery wall called?
According to the research, the tunica intima is the innermost layer of an artery wall.
What is the tunica intima?It is one of the three layers of an artery wall composed of the endothelium and a subendothelial connective layer.
It is considered the innermost layer, the one that is in contact with the blood, the outer or adventitia is made of connective tissue and a middle layer with muscle fibers.
Therefore, we can conclude that according to the research, the tunica intima is the innermost layer of an artery wall.
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Sexual reproduction increases the genetic variation of a species because:
Answer:
Sexual reproduction increases the genetic variation of a species because it involves combining of genetic materials of two parents/individuals to form an offspring.
Explanation:
Sexual reproduction is a type of reproduction that involves formation of an offspring by combination of male and female gametes. Each gamete carries a haploid set of chromosomes. When gametes from both the parents combine, a zygote is formed which has a diploid set of chromosomes. So, sexual reproduction involves combination of genetic materials of two different individuals, hence, it leads to genetic variation.
What does the author predict about the future of the Earth's mantle? Do you support his educated guess? Use complete sentences to answer.
Because this region is immune to human meddling, the earth's mantle won't change in the future.
What transpires in the mantle of the Earth?We can determine the Earth's topography thanks to the heat and material transport taking place in the mantle. Plate tectonics is shifted by mantle activity, which also causes earthquakes, volcanoes, seafloor spreading, and the formation of mountains.
Therefore, since this area is protected from human interference, we can draw the conclusion that the earth's mantle won't alter in the future.
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1.write the chemical equation for transpiration
2.what is translocation ??,give the chemical equation for translocation
plss help will mark brainlest..
Transpiration is a water balance process mediated by stomata opening. Translocation is the transport process of photosynthetic substances from leaves to other tissues.
What is transpiration?Transpiration is a water balance process.
Through stomata opening and closure (which depends on how hydrated the plant is) water vapor is expelled from the leaves.
If the plant is dehydrated, stomata close. If it is not dehydrated, it opens.By limiting water exit, stomata allow more water molecules to be available for light reaction processes when the plant is dehydrated.
The equation to calculate transpiration is as follows,
E = Gv (Cvs - Cva)
Where,
E is transpiration.Gv is the total vapor water conductance.Cvs is the water concentration inside the leave.Cva is the air water concentration.What is translocation?Translocation is a fast and dynamic process through which photosynthetic products are transported from the leaves to other tissues of the plant to be used or stored.
This transport is done by the phloem cells through active transport or osmosis (depending on the substance).
The translocation of elements from the leaves to the roots is fast.
In conclusion,
The chemical equation for transpiration is E = Gv (Cvs - Cva). Translocation is the movement of photosynthetic products from leaves to other plant tissues.You can learn more about translocation and transpiration at
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members of the _____ movement would be very concerned about the unequal exposure of members of a certain race to pollution.
Members of the environmental justice movement would be very concerned about the unequal exposure of members of a certain race to pollution.
What is the environmental justice movement?The environmental justice movement is a group aimed at removing all inequities associated with environmental pollution.
The environmental justice movement provided important hits in the conservation of communities for ecological issues.
In conclusion, members of the environmental justice movement would be very concerned about the unequal exposure of members of a certain race to pollution.
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Help!!! Please!!! Here is the question: Explain how global wind patterns such as the prevailing westerlies in the northern hemisphere would be impacted in the rotation if the rotation of the earth stops.
Thank you!
= 15 points
If the Earth did not rotate on its axis, the atmosphere would only circulate between the poles and the equator in a simple back-and-forth pattern.
Answer:
If the Earth did not rotate on its axis, the atmosphere would only circulate between the poles and the equator in a simple back-and-forth pattern.
Explanation:
The atmosphere would only circulate between the poles and the equator in a simple back-and-forth pattern.