Of the following choices, which would be a proposed mechanism by which a basic molecule affects an acid solution? a) It prevents the disassociation of H.O molecules therefore raising the pH toward 7.0. b) The base releases OH which can combine with H in the solution, therefore raising the pH toward 70 c) bases are ionic molecules that combine with the polar H,O molecules.
d) They counteract the burning sensation caused by acids by cooling the cells lining the stomach
e) None are true
Answers
The proposed mechanism by which a basic molecule affects an acid solution is option (b): The base releases OH⁻ which can combine with H⁺ in the solution, therefore raising the pH toward 7.0.
In an acidic solution, the concentration of H⁺ ions is higher than the concentration of OH⁻ ions. A basic molecule, also known as a base, can donate OH⁻ ions to the solution, which can then combine with H+ ions to form H₂O, effectively reducing the concentration of H⁺ ions and raising the pH towards 7.0.
Option (a) is incorrect because basic molecules actually promote the dissociation of H₂O molecules into H⁺ and OH⁻ ions, and do not prevent the dissociation.
Option (c) is incorrect because basic molecules are not ionic and do not combine with H₂O molecules in this way
Option (d) is incorrect because this describes a different effect of bases on the stomach lining, rather than their effect on the pH of an acid solution.
Therefore, the correct answer is (b) The base releases OH⁻ which can combine with H⁺ in the solution, therefore raising the pH toward 7.0.
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Related Questions
What makes a hypothesis scientifically
Answers
Answer:
The basic idea of a hypothesis is that there is no pre-determined outcome. For a hypothesis to be termed a scientific hypothesis, it has to be something that can be supported or refuted through carefully crafted experimentation or observation
Explanation:
A hypothesis is an educated guess. When scientist make a hypothesis, it gives them a reason to make an experiment to decide whether its accepted or not and they also learn more about that certain subject while doing so. When scientist make a hypothesis, it gives them a reason to make an experiment to decide whether its accepted or not and they also learn more about that certain subject while doing so. Comments
Answer:
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Can you tell the difference between electromagnetic and mechanical waves?
In a mechanical or compression wave, the particles of the medium are displaced in a direction
perpendicular to the direction of energy transport.
A wavelength: in a transverse wave it can be measured from crest to crest; in a mechanical wave, from
compression to compression.
A thunderstorm! Lightning and thunder and rain! You hear the thunder before you see the lightning
because sound travels faster than light through the air.
Dolphins slap the wave to send messages because sound travels faster through water than through ain
Sound waves are transferred by the compression of particles. The closer the particles are to one another
the faster the energy is transferred. Therefore, sound energy directly depends upon the density of the
medium
Signals traveling through space must be in the form of electromagnetic waves rather than sound waves
Answers
Answer:
Electromagnetic waves can travel through a vacuum, that is an empty space, whereas mechanical waves cannot. They need a medium to travel such as water or air. Ripples in a pond are an example of mechanical waves whereas electromagnetic waves include light and radio signals, which can travel through the vacuum of space.
Explanation:
How is a phenotype determined in living organisms?
With a pedigree
Inherited genes from the parents.
Genetic combination of alleles
Through genetic counseling
Answers
The pancreas is the organ in the body that...
Answers
Answer:
i believe the answer is B.
Explanation:
did a little research...tell me if wrong
In the desert, saguaro cacti, owls, horned lizards, and fire ants all share the same space. Which example can be considered a population
Answers
The population in this scenario would be the saguaro cacti, owls, horned lizards, or fire ants.
A population refers to a group of organisms of the same species living in a particular geographic area. In this scenario, there are different species occupying the same space, but each of them has their own population. The saguaro cacti population includes all the individual saguaro cacti in the area, while the owl population includes all the individual owls, and so on. Therefore, any of the mentioned species can be considered as a population.
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acid rain is associated with which of the following? responses formation of the antarctic ozone hole formation of the antarctic ozone hole release of pcbs into the atmosphere release of pcbs into the atmosphere damage to tropical rain forests damage to tropical rain forests the burning of fossil fuels the burning of fossil fuels the increasing ph of lake waters
Answers
acid rain is associated with: the burning of fossil fuels.
What is acid rain?Any type of precipitation that contains acidic elements, such as sulfuric or nitric acid, which falls to the ground from the sky in wet or dry forms is referred to as acid rain, also known as acid deposition. This can apply to rain, snow, fog, hail, and even corrosive dust. Acid rain has a pH level that is lower than this and often runs between 4 -5. Most water, especially drinking water, has a neutral pH that exists between 6.5 and 8.5. The North Eastern United States, Eastern Europe, and increasingly sections of China and India are the regions of the world where acid rain most frequently occurs and causes serious environmental damage.
Thus, acid rain is associated with: the burning of fossil fuels.
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The complete question is as follows:
Acid rain is associated with which of the following?
a) formation of the antarctic ozone hole
b) release of PCBs into the atmosphere
c) Damage to tropical rain forests
d) the burning of fossil fuels
e) The increasing pH of lake waters
the conchae question 53 options: provide a increase in surface area for the sense of smell. create turbulence in the air to trap particulate matter in mucus. provide an opening to paranasal sinuses. divide the nasal cavity into a right and a left side. provide an opening into the pharynx.
Answers
The following statement is true about the conchae: "They create turbulence in the air to trap particulate matter in mucus." Option B is correct.
The nasal conchae, also known as the turbinates, are bony structures within the nasal cavity that extend from the lateral walls towards the septum. They help to increase the surface area of the nasal cavity, allowing for more efficient warming and humidification of the air before it reaches the lungs.
Additionally, the conchae create turbulence in the air as it passes through the nasal cavity, which helps to trap particulate matter in mucus, allowing it to be removed from the respiratory system. The mucus is produced by goblet cells in the epithelial lining of the respiratory tract and is moved by cilia towards the pharynx, where it is either swallowed or expectorated.
Hence, B. is the correct option.
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--The given question is incomplete, the complete question is
"Which of the following statement is true about conchae. Options: A) provide a increase in surface area for the sense of smell. B) create turbulence in the air to trap particulate matter in mucus. C) provide an opening to paranasal sinuses. divide the nasal cavity into a right and a left side. D) provide an opening into the pharynx."--
60.
Which of the following is the first step in the production of insulin using recombinant DNA?
(A)Plasmid removed from E. coli.
(b)DNA coding for human insulin inserted in the plasmid.
(C)Plasmid closed by a special enzyme.
(S)Plasmid opened by a special enzyme.
Answers
Answer:
B
Explanation:
because it is the right answer
Why are lysosomes important to the health of cells?
Answers
Lysosomes are organelle that is present in the cell. This organelle is present in both plant and animal cells, it is not limited to only plants, it can also be found in animals.
Lysosomes help to destroy or break down parts of the cell that are no longer useful or can no longer add any value to the build-up of the cell membrane.
When a cell is very old or when it can no longer function, a lysosomes can help to automatically destroy or get rid of the cell so it doesn't affect the normal of other cells
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On the cellular level, what causes cancer?
A. cells produced with DNA
B. accelerated cell death
C. out-of-control cell growth and division
D. defective cell membranes
Answers
Answer:
A
Explanation:
How does understanding physical properties of matter help us to make informed choices for sustainable living?
Answers
Answer:
Understanding physical properties of matter can help us make informed choices for sustainable living in several ways. For example, by understanding the properties of materials such as thermal conductivity, thermal capacity, and density, we can make better decisions about insulation materials for buildings, which can lead to reduced energy consumption for heating and cooling. Understanding the properties of different materials also helps us choose those that are more durable, reducing the need for frequent replacements and reducing waste. Additionally, knowledge of the properties of materials can help us identify safer and more environmentally friendly alternatives to hazardous substances, such as lead or toxic chemicals. Overall, understanding the physical properties of matter allows us to make choices that are both sustainable and environmentally responsible.
( 20 POINTS ) what does the zygote need to do before it divies to make two cells?
Answers
Answer:
The process of mitosis
Explanation:
in this process each cell doubles. The single sell becomes two then four then it keeps going by twos. It is known as a germinal period of development.
I hope this helps :)
Which contributes to Earth's ability to sustain life?
A. The atmosphere allows all of the sun's radiation to enter due to Earth's distance from the sun.
B. The atmosphere prevents all space debris from reaching the surface due to the ozone layer.
C. The atmosphere is extremely thin due to the temperatures of the sun.
D. The atmosphere is breathable due to the unique mixture of gases.
Answers
Answer:
D
Explanation:
This is because the atmosphere is refreshable and makes breathing so conducive.
a unit of gene expression that allows controlled and coordinated expression of a set of proteins is called a(n) .
Answers
A unit of gene expression that allows controlled and coordinated expression of a set of proteins is called an Operon.
An operon is a region of DNA that contains a cluster of genes that are transcribed and translated together.
It typically consists of a promoter, an operator, and one or more structural genes.
The promoter is the sequence that binds to the RNA polymerase and initiates the transcription of the operon's genes.
The operator is the sequence that blocks transcription when a repressor protein binds to it. Finally, the structural genes code for the proteins that the operon produces.
In summary, an operon is a unit of gene expression that allows for the coordinated and controlled expression of a set of proteins. It consists of a promoter, an operator, and one or more structural genes, and is regulated by repressor proteins.
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What are the rules for writing a hypothesis?
Answers
Collect research.
Formulate an answer.
Write a hypothesis.
In addition to these two key characteristics, this group possesses a group of embryonic cells called the ____________ that contribute to the development of many vertebrate features.
Answers
The group of embryonic cells that contribute to the development of many vertebrate features is called the neural crest.
The neural crest is a transient structure that forms during embryonic development in vertebrates. It arises from the dorsal region of the neural tube, which is a structure that eventually gives rise to the central nervous system. The neural crest cells migrate extensively throughout the embryo and give rise to a wide range of cell types and tissues.
The neural crest cells have a remarkable ability to differentiate into various cell types, such as sensory neurons, melanocytes (cells responsible for skin and hair color), cartilage and bone cells, smooth muscle cells, and certain types of connective tissue. This diverse range of cell types gives rise to many important features in vertebrates, including the craniofacial skeleton, peripheral nervous system, and certain glands.
The migration and differentiation of neural crest cells are tightly regulated by a combination of genetic and environmental factors. Defects in neural crest cell development can lead to a variety of developmental disorders and birth defects, such as craniofacial abnormalities, heart defects, and certain types of cancer.
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prevailingwind patterns near the top of the trophsphere where the hadlin and ferrel cells join and where the ferrel and polar cells meet are known as
Answers
The prevailing wind patterns near the top of troposphere where the Hadley as well as Ferrel cells will join, and where the Ferrel and the Polar cells will meet, are known as the Polar Front Jet Stream or simply the Jet Stream.
The Jet Stream is a narrow band of strong winds that blow from west to east in the upper troposphere and lower stratosphere, at an altitude of approximately 10-15 kilometers above the Earth's surface. The Jet Stream is created by the large temperature differences between air masses at high and low latitudes and the Coriolis effect.
The location and strength of the Jet Stream can have a significant impact on weather patterns, as it can influence the movement of air masses and the formation of storms. For this reason, the Jet Stream is an important factor to consider when forecasting weather and predicting climate patterns.
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What bet force is required to accelerate a car at a rate of 4m/s if the has a mass of 5000kg?
Answers
The force required to accelerate the car is 20,000 N.This force can come from the car's engine, which generates power to push the car forward.
To calculate the force required to accelerate a car, we can use Newton's second law of motion, which states that force (F) is equal to mass (m) multiplied by acceleration (a). In this case, the mass of the car is 5000 kg and the acceleration is 4 m/s².
So, the formula to calculate the force is F = m × a. Substituting the given values, we get F = 5000 kg × 4 m/s².
Multiplying these values, we find that the force required to accelerate the car at a rate of 4 m/s² is 20,000 N (newtons).
In summary, the force required to accelerate the car is 20,000 N. Remember, force is measured in Newtons (N), mass in kilograms (kg), and acceleration in meters per second squared (m/\(s^2\)) .
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What causes water to runoff?
A) The sun heats up Earth's surface.
B) Water does not soak into the ground.
C) There is a small amount of precipitation.
Answers
Answer:
B) Water does not soak into the ground
Explanation: A runoff is when the water does not get soaked into the water after any type of perciptation. ex: rain or snow. The water in an runoff is from the water that the land couldn't absorb.
Answer:
b
Explanation:
what is ostia?? pliz help I'll give brainliest
Answers
Answer:
an opening into a vessel or cavity of the body.
What is the function of the epiglottis in a fetal pig.
Answers
Answer:
When food is swallowed, the epiglottis folds over the entrance to the trachea to prevent food and drink from entering the windpipe. At rest, the epiglottis sits upright, thus uncovering the opening to the trachea and allowing air to pass into the lungs.Thus, it is the function of epiglottis.
Explanation:
PLEASE, SOMEBODY, HELP I NEED THIS ANSWERED BEFORE TOMORROW
Pollen is taken from a crime scene and examined under a microscope. The forensic technician notices spikes on the pollen's surface. What type of plant does the pollen belong to?
Gymnosperm
Angiosperm
Algae
Fern
Answers
In some angiosperm plants, pollen grains express spikes on their surface that help them stick to the pollinator's body and incrceases the chances of cross-fertlization. Option B. Angiosperm.
What type of plants produce pollen with spikes?Different families among the Angiosperm group produce pollen with spikes on their surface.
This is a strategy developed by these plants to ensure cross-fertilization. Let us remember that pollen is the masculine cell released by the masculine organ of the plant. This cell meets the ovocell and fertilize.
In cross-fertilization, pollinators play an important role since they carry pollen from one plant to another one.
To ensure pollen sticks to the pollinator's body and succesfully get to another flower, Angiosperm developed spikes that help the grain to cling to the pollinator's body. Once the insect get to the new flower, pollen is deposited, increasing the chances of cross-fertilization.
The correct answer is b. Angiosperm
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what is the definition of an oncofetal tumor antigen? a.an antigen found in a nonviable pregnancy. b.all of the answers are correct. c.an antigen derived from a reactivated fetal gene. d.an antigen which is not immunogenic. e.an oncogene fused to a fetal gene.
Answers
Definition - While fetal tissues and cancers both produce oncofetal antigens, adult tissues only produce them in very small amounts. An examination is done of the recognized oncofetal antigens.
Oncofetal antigens are chemicals that are produced by tumors as well as by fetal cells, however they are produced by adult tissues at much lower levels.
The oncofetal antigen alpha-fetoprotein (AFP) is helpful in keeping track of individuals with nonseminomatous testicular cancer and specific kinds of ovarian cancer.
stage 4 - commonly referred to as "secondary" or "metastatic" cancer, is when the disease has progressed to at least one additional body organ from the initial site.
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QUICK ASAP PLS Certain bacteria live and grow on the roots of some plants and produce chemicals that are beneficial to the plants. Which of the following observations best supports the claim that this relationship is beneficial to the plants?
Group of answer choices
Plants with a higher amount of the bacteria on their roots have increased rates of survival and reproduction.
When the bacteria are removed from the plant roots and are grown in a laboratory setting, they fail to survive.
The population size of the bacteria varies greatly depending on the chemistry of the soil and the type of the plant.
The chemical produced by the bacteria can be created by humans and added to the soil where it reaches the roots of the plant.
Answers
Answer:
Explanation: Plants with a higher amount of the bacteria on their roots have increased rates of survival and reproduction.
proteins can play many diverse roles in cells. select all of the following that are functions of proteins.
Answers
Some proteins serve a structural function, such as microtubules.
Some proteins function as hormones, such as insulin which is made up of 51 amino acids.
Some proteins function as defense molecules, such as immunoglobulins.
Some proteins function as enzymes, which are organic catalysts.
What is protein ?All living things have proteins. Covalently bound amino acids are folded into three-dimensional structures called proteins. A protein can play a variety of functions within an organism.
They perform several different tasks, such as organising, transportation, and defence. A protein can have up to four different structural levels and is made up of chains of amino acids. Examples of particular proteins are collagen, insulin, and anticorps.Learn more about Protein here:
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Ozzie the ____________________ (a mature bone cell) works in the Femur, an elongated
bone complex called a ____________________. Ozzie's office is about half way up the Femur. He
looks out into the center of the bone and has a lovely view of red bone marrow. Ozzie likes this office
because he gets to see ____________________ being born in the marrow every day. Ozzie’s job is
to maintain homeostasis in the surrounding bone or ____________________ tissue.
Answers
Ozzie the osteocyte (a mature bone cell) works in the Femur, an elongated bone complex called a long bone. Ozzie's office is about halfway up the Femur. He looks out into the center of the bone and has a lovely view of red blood cells being born in the marrow every day. Ozzie’s job is to maintain homeostasis in the surrounding bone or osseous tissue.
An osteocyte is a type of bone cell that is responsible for maintaining and regulating the mineralized bone tissue. They are mature bone cells that are embedded within the bone matrix. Osteocytes are derived from osteoblasts, which are responsible for bone formation. Once osteoblasts become surrounded by bone matrix, they become osteocytes and are housed in small spaces called lacunae within the bone tissue. Osteocytes play a vital role in bone remodeling, mineral homeostasis, and communication within the bone tissue. They are involved in detecting mechanical stresses and coordinating the response of bone tissue to maintain its strength and integrity.
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Translation begins when the initiator tRNA binds to the ____. Group of answer choices second tRNA terminator codon small ribosomal subunit large ribosomal subunit first codon of the mRNA PreviousNext
Answers
Translation is the process in which the genetic information encoded in mRNA molecules is converted into the amino acid sequence of a protein. This process occurs in ribosomes, which are composed of small and large subunits. During translation, tRNA molecules act as adaptors, bringing specific amino acids to the ribosome according to the sequence of codons in the mRNA.
Translation begins when the initiator tRNA binds to the small ribosomal subunit. Here's a step-by-step explanation:
1. The mRNA molecule, which contains the genetic information for protein synthesis, binds to the small ribosomal subunit.
2. The initiator tRNA, carrying the amino acid methionine, recognizes and binds to the start codon (AUG) on the mRNA.
3. The large ribosomal subunit associates with the small ribosomal subunit, forming a complete ribosome with the mRNA and initiator tRNA in place.
4. The ribosome reads the mRNA sequence in sets of three nucleotides, called codons, and matches each codon with the appropriate amino acid carried by the corresponding tRNA.
5. The ribosome facilitates the formation of peptide bonds between adjacent amino acids, extending the polypeptide chain.
6. This process continues until the ribosome encounters a stop codon (UAA, UAG, or UGA) on the mRNA, signaling the end of translation.
7. The ribosome dissociates into its subunits, releasing the completed polypeptide chain for further processing and folding into a functional protein.
In summary, the initiator tRNA binds to the small ribosomal subunit during the initiation of translation.
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a population of frogs inhabits a lake if the resource availability of the lake changes the population may
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Bent little finger (B) is dominant over straight little finger (b). A student has bent little finger, but their Mom has straight little finger. Without even knowing the Dad's phenotype, what is the student's genotype? O a. BB Ob. Bb O c. bb O d. There is no way to be sure, because we don't know Dad's genotype. Value: 2 Widow's peak is dominant over lacking a widow's peak. Sophia has a widow's peak, just like both her parents. Are we sure she is PP? O a. Yes, she is PP because both parents have the dominant trait. O b. No, there is still a chance she could be Pp. That might occur if either parent was Pp. O c. No, she could be PP, Pp, or pp. All are possible depending on her parent's genotypes. Value: 2 Dark brown eyes (B) are dominant over light colored eyes (b). A student has blue eyes (light), but she is adopted. Do we know her genotype? O a. BB O b. bb O c. There is no way to be sure without knowing the genotype of at least one of her parents. O d. Bb
Answers
The student's genotype is either Bb or BB.
Based on the given information, we know that a bent little finger (B) is dominant over a straight little finger (b). The student has a bent little finger, indicating that they possess the dominant trait. However, since we do not know the genotype of the student's father, we cannot determine the exact genotype of the student.
If the student's mother has a straight little finger (bb), then the student must have inherited the bent little finger allele from their father. In this case, the student's genotype would be Bb, with one copy of the dominant allele and one copy of the recessive allele.
On the other hand, if the student's mother has a bent little finger (Bb or BB), the student could have inherited either a dominant allele from the mother (BB) or one copy of the dominant allele from the mother and one copy of the recessive allele from the father (Bb). Therefore, the student's genotype could be either BB or Bb.
In conclusion, without knowing the genotype of the student's father, we cannot determine the exact genotype of the student. However, based on the given information, the student's genotype is either Bb or BB.
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One of the major positive effects of globalization is:
OA. faster spread of technology and ideas around the world.
B. decreased environmental damage from burning fossil fuels.
C. businesses choosing to hire more workers in their own countries.
D. less economic competition between different countries.
SUBMIT
Answers
The major positive effect of globalization is faster spread of technology and ideas around the world. The correct option is A
What is globalization ?Technology and ideas have spread more quickly thanks to globalization. This is due to the fact that globalization has made it simpler for people to communicate and travel. People are therefore more likely to be exposed to novel concepts and cutting-edge innovations from many civilizations. Progress and innovation may result from this.
For instance, the internet has made it easier than ever for people to communicate information and ideas with one another. As a result, new technologies like social media and online education have emerged.
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