Answer:c prevent untreated sewage from contaminating groundwater
Explanation:That would mean the ground water would then be dirty and undrinkable
Nutrient molecules are used to build cellular structures or for energy. This best represents which characteristic of life?
This represents that the living things acquire materials and energy from the environment. The correct option is A.
What are cellular structures?A cell is comprised of three parts: the cell membrane, the nucleus, and the cytoplasm that lies between the two.
The cytoplasm contains complicated provisions of fine fibers as well as hundreds or even thousands of tiny but distinct structures known as organelles.
The nucleus is possibly the most important eukaryotic organelle. In fact, the presence of a nucleus is regarded as one of the defining characteristics of a eukaryotic cell.
Thus, the correct option is A.
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Your question seems incomplete, the probable options are:
a. Living things acquire materials and energy from the environment.b. Living things are homeostatic.c. Living things are adapted.d. Living things grow and develop.e. Living things respond to stimuli.The ________, which is still developing during adolescence, is a part of the brain responsible for judgment, impulse control, and planning.
The prefrontal cortex, which is still developing during adolescence, is a part of the brain responsible for judgment, impulse control, and planning.
Define brain and its various parts.
The cerebrum, cerebellum, and brain stem are the three major components of the brain. The brain's main structure, the cerebrum, is made up of the right and left hemispheres. Higher cognitive tasks include understanding touch, vision, hearing, speech, logic, emotions, learning, and fine motor control, among others.
It is the most complex part of the human body.
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Use your knowledge of microorganisms to complete this table.
Bacteria are prokaryotes, fungi and protists are eukaryotic organisms and viruses are not living.
In what ways it is possible to distinguish prokaryotes from eukaryotes?Bacteria (e.g., E coli) are prokaryotic organisms whose cells don't have nuclei or membrane bound organelles, reproduce by asexual ways such as binary fission, and they are beneficial as descomposers.
Some common diseases caused by bacteria include tetanus (Clostridium tetani), pneumonia (Klebsiella pneumoniae), cholera (Vibrio cholerae), etc.
Moreover, protists (e.g. algae) and Fungi (e.g. Saccharomyces cerevisiae) are eukaryotic organisms that have cell nuclei and organelles, can reproduce by asexual reproduction, can perform photosynthesis (algae) or acts as decomposers (fungi).
Some common diseases caused by protists/protozoans include malaria (Plasmodium), sleeping sickness (Trypanosoma), etc.
Some common diseases caused by fungi include aspergillosis (Aspergillus), candidiasis (Candida albicans), etc.
Finally, viruses are not living because they need a host to survive and are also useful as vectors to design gene therapy techniques.
Some common diseases caused by viruses include AIDS (HIV retrovirus), dengue fever (Flaviviridae viruses), etc.
Bacteria are used to produce insulin and other natural medications, viruses are used as carriers for the treatment of diseases, protozoans can enhance the fertility of soils and fungi are employed in the preparation of foods.
In conclusion, bacteria are prokaryotes, fungi and protists are eukaryotic organisms and viruses are not living.
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Money that mining companies may be required to post in order to begina mining project
which ensure they will honor their environmental obligations is a(n)
environmental impact statement
down payment
security deposit
bond
Money that mining companies may be required to post in order to start a mining project is environmental impact statement
Mined materials are needed to build roads and hospitals, to build automobiles and houses, to make computers and satellites, to generate electricity, and to deliver the many other goods and services that consumers enjoy. In addition, mining is economically vital to producing regions and countries.
What is mining project?mining project means mining harbored on under 1 or more mining leases as a single integrated undertaking.
What are the 4 methods of mining?There are four major mining methods: underground, open surface (pit), placer, and in-situ mining. Underground mines are more costly and are often used to reach more serious deposits. Surface mines are commonly used for more shallow and less valuable warranties.
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Darwin and ________ both developed and proposed the theory of evolution by natural selection
Darwin and Alfred Russel Wallace were the scientist and naturalist who proposed and developed the theory of evolution by natural selection.
What is theory of evolution?According to theory of evolution "the process in which all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce.
The main features of theory of evolution are:
individuals of a species are not identical characters are trasfered from one generation to next generationthe number of survival species are less than the born speciesthe survivors are able to reproduceTherefore, Darwin and Alfred Russel Wallace both developed and proposed the theory of evolution by natural selection.
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What is the approximate difference in sunita’s calorie need for basal metabolism from before to after the 10-pound weight loss?
a. 50 calories
b. 100 calories
c. 150 calories
d. 200 calories
Option (b.) 100 Calories will be the right one.
Basal metabolic rate (BMR) is the total number of calories your body needs to perform essential, life-sustaining functions which include circulation, breathing, cell production, nutrient processing, protein synthesis, and ion transport.
Generally a person burns calories continuously throughout the day in order to carry out basic life functions, for example-breathing, circulation, and digestion.
Equation to Calculate Your BMR:-
There is an equation given by Harris-Benedict which is often used to estimate basal metabolic rate which is mentioned below:-
Men: BMR = 88.362 + (13.397 x weight in kg) + (4.799 x height in cm) - (5.677 x age in years)
Women: BMR = 447.593 + (9.247 x weight in kg) + (3.098 x height in cm) - (4.330 x age in years)
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For a gene with two alleles, s and s, if the frequency of the one allele (s) is 0.25, then the frequency of the other allele(s) is?
For a gene with two alleles S and s, the frequency of the other allele can be found out by using Hardy Weinberg Equilibrium.
According to the Hardy Weinberg Equilibrium, the sum total of all allelic frequency is equal to one for a random mating population.
As per the the given question, the frequency of one allele i.e. s is 0.25 that means the frequency of the other allele i.e. S can be found out using the given relation:
∴ s + S = 1 (Hardy Weinberg Equilibrium)
⇒ 0.25 + S = 1
⇒ S = 1 - 0.25
⇒ S = 0.75
So, the Frequency of the other Allele (S) is 0.75
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What might explain the association between malignant tumors and chromosomal abnormalities?
Two prominent feature of cancer cells abnormal no of chromosomes and large scale structural rearrangements of chromosomes. The chromosome aberrations of chromosome and these are caused by genomic instabilities inherent to most cancers.
The chromosomal abnormalities which is change to child genetics material or DNA which the baby's development before birth. It is also causes miscarriage, disease or problems in development. It is known as aneuploidy, which is abnormal chromosome number due to an extra or missing chromosome.
Malignant tumors cells that can grow uncontrollably and spread locally. It is cancerous which is invade other sites. They also spread bloodstream and this is called metastasis.
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If a man weighs 190 lb and eats 150 g protein per day, his protein intake is _____ of the recommended dietary allowance (rda)
The RDA for protein is 0.8 g per kilogram of body weight. This man's weight is 190 lb, or 86 kg; 86 kg × 0.8 = 69.1 g protein per day. Thus, an intake of 150 g is more than twice his RDA of 69.1 g of protein per day.
Recommended Dietary Allowance (RDA) of protein for adults is 0.8 g per kilogram of body weight. To determine your RDA for protein, multiply your weight in pounds by 0.36.The protein RDA for adults is 0.8 grams per kilogram of healthy body weight per day.
Proteins build muscle mass and contour, facilitate hair, nails and bone growth, regulate energy levels, and support chemical processes within the body which include enzyme, hormone and antibody production.
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Urine is carried from the urinary bladder to the external environment by the?
The tube that carries urine from urinary bladder to the outside environment by urethra.
What is the chemical composition of urine?Urine is a fluid released from the kidney to remove waste products of the bloodstream.
Human urine is yellowish in color as various chemical components are present.
The primary components are water which is 91% - 96%, urea, creatinine, uric acid, enzymes, carbohydrates, hormones, fatty acids, pigments, and mucins, and other inorganic ions
The pH ranges from 5.5 to 7 and specific gravity ranges from 1.003 to 1.035.
Hence, urethra is the correct answer
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If an organism is catalase positive, which aerotolerance categories could it be in?
If an organism is catalase positive, it is in staphylococcus aerotolerance categories.
Catalase testing is used to distinguish between Streptococci (catalase-negative) and staphylococci (catalase-positive). The catalase enzyme works to counteract hydrogen peroxide's bactericidal effects. Hydrogen peroxide (H2O2) is quickly broken down into water and oxygen by catalase.
Bacteria that use oxygen for breathing create the enzyme catalase, which shields them from the harmful byproducts of oxygen metabolism. Strict aerobes and facultative anaerobes are both catalase-positive bacteria, although they can all respire utilising oxygen as a terminal electron acceptor. Anaerobes or facultative anaerobes that solely ferment and do not respire using oxygen as a terminal electron acceptor can be catalase-negative bacteria (i.e. Clostridium).
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When comparing the diffusion rate of a substance at differing concentrations within a liquid :_____.
When comparing the diffusion rate of a substance at differing concentrations within a liquid , the diffusion rate will increase with a higher concentration of the substance and the diffusion rate will decrease with lower concentration of the substance.
The higher the temperature increase the energy, the more will be the kinetic energy in the particles so that they will move and mix more quickly. The greater the surface area, the faster the rate of diffusion .
The density of solvent increases the rate of diffusion decreases.There are some factors which affect the speed of diffusion such as extent of concentration, solvent density, temperature, pressure
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In the word search below are the names of several pieces of lab equipment. As you find each piece of equipment, record its name on the list. There are only 13 words out of the listBunsen burner,Pipestem triangle, Evaporating dish, Beaker, Utility clamp,Iron ring, Mortar and pestle, Crucible and cover, Gas bottle, Saftey goggles,Corks, Watch glass, Erlenmeyer flask, Wire gauze, Pipet, Buret,Triple beam balance, Test tube rack, Funnel, Scoopula,Well plate, Wire brush,File,Wash bottle, Graduated cylinder,Thanks
A crossword is a type of word puzzle that often consists of squares or a rectangular grid of squares with black and white borders. In this case, this is created to educated the audience on the various types of lab equipment.
What are the answers to the crossword puzzle?The answer to the crosswords are as follows:-
Beaker -second rowBunsen Burner - second last lineCorks - besides the word thermometerCrucible and cover - tenth row diagonalEvaporating dish- fifth row diagonalGas bottle - Last lineIron Ring - second last columnMortar and pestle - fifth columnPipestem triangle- third-row diagonalSafety goggles - Fifth columnUtility clamp - seventh rowWatch Glass - Seventh column invertedWire gauze - second line.Learn more about lab equipment:
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For a trait that is X-linked, recessive, and controlled by complete dominance, an individual with the genotype XnXn (little n, little n) would be represented in a pedigree as a (an)
For a trait that is X-linked, recessive, and controlled by complete dominance, an individual with the genotype XnXn (little n, little n) would be represented in a pedigree as an open square.
What is an X-linked trait?An X-linked trait is any phenotypic feature controlled by one or more genes located on the X chromosomes (it is a sex chromosome).
Moreover, a character that exhibits complete dominance is associated with an allele that completely masks the expression of the recessive allele in heterozygous organisms.
In conclusion, for a trait that is X-linked, recessive, and controlled by complete dominance, an individual with the genotype XnXn (little n, little n) would be represented in a pedigree as an open square.
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Removal of waste and addition of fresh nutrients will most help increase which part of a growth curve?
Removal of waste and addition of fresh nutrients will most help increase stationary phase of a growth curve.
what is bacterial growth curve?It is a graphical representation of the number of live cells in population of bacteria over a period of time.
In lag Phase growth curve, no cell division has been observed instead cellular activity are seen.
In exponential phase the cells undergo division by binary fission and
In stationary Phase the population growth experienced to decline due to depletion in nutrients availability and accumulation of waste products.
In death Phase, increase in waste products concentration decline in cells.
Thus, stationary phase is the correct answer.
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what graph would you use?
The pH of solutions in experimental test
tubes.
Test-tube number
1
2
3
4
5
pH
6.7
7.1
7.4
7.1
7.0
Explanation:
I don't know I just really need points at this point and need answers to a test so I'm sorry for this
K-strategists might include which species?
A. houseflies
B. mice
C. humans
D. shrimp
Potential K- strategists include humans.
K- strategist:
The term "K-selected" or "K-strategist" refers to species whose populations vary at or close to the carrying capacity (K) of the ecosystem in which they live. Compared to r-selected species, K-strategist species have remarkably constant populations and generate relatively few offspring, but those offspring typically grow to be rather big. Lengthy gestation durations of many weeks, slow development (and hence prolonged maternal attention), and long longer lifespans are traits of K-selected species. Additionally, they typically live in ecological groups that are generally stable, including premature or climax forests.
R-strategist:
They are creatures that have high reproduction rates followed by high death rates, resulting in populations with wildly variable numbers, according to the concept of r-selected species (or r-strategist). This term is based on the concept of "r," a variable in the ecology of animal populations that denotes a species' maximal reproductive potential. The populations of r-selected species will be small outside of the mating season. R-selected organisms begin to generate a lot of progeny as soon as reproduction begins.
Therefore it is concluded that the final choice is option C, i.e., humans.
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What is the medical term for the act of belching or raising gas orally from the stomach?
Eructation is the medical term for the act of belching or raising gas orally from the stomach. It is preceding vomiting consists of pronged retching movement during the period of nausea and spasmodic uncoordinated contraction of muscles of respiration during diaphragm contracts.
Passing of gas through the mouth is called as burping. The return of swallowed food to the mouth is known as regurgitation. This is the process to eliminate the gas that is produced as a byproduct of microbial fermentation.
Burping keeps your stomach from expanding too much from swallowed air. That air travels back to esophagus, which leads to an audible release that people it burp.
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A scientist samples a population of butterflies and finds that 56% are heterozygous at a particular locus. If the population is in hardy-weinberg equilibrium, what should be the frequency of the homozygous individuals in this population?.
0.44 the frequency of the homozygous individuals in this population.
What is Hardy-Weinberg principle ?
The Hardy-Weinberg equilibrium is a principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.
From the Hardy Weinberg Law of Population and Genetics,
We have
x²+2xy+y²=1 and
x+y=1
where
x = frequency of the dominant allele in the population
y = frequency of the recessive allele in the population
x2 = percentage of homozygous dominant individuals
y2 = percentage of homozygous recessive individuals
2xy = percentage of heterozygous individuals
Given 2xy = 0.56
from here, y=0.28/x, (the frequency of the recessive allele ) can be obtained
we need to find 'x'
recall, x+y=1, x=1-y
substituting this gives us
y=0.28/(1-y), which becomes,
y(1-y)=0.28
y²- y + 0.28 (quadratic equation)
Solving this to find 'y' gives two imaginary values of y = 0.44 but ,
There is no imaginary solution .
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Type your response in the box.
A forest fire damaged many trees in a forest. Squirrels and other plant-eating animals depend on these trees for food and shelter. Will the forest fire affect the carnivores of the ecosystem? Explain your answer.
Answer:
Yes
Explanation:
The lack of trees causes the herbivores to have less shelter which leads them to be more exposed to carnivores so they might get eaten quicker. Slowly the amount of herbivores will die and there will be less food for the carnivores causing them to die aswell.
(I hope this helps!)
After the mordant has been added, gram-positive organisms are stained __________ and gram-negative organisms are stained __________.
In gram staining After the mordant has been added, gram-positive organisms are stained purple-violet and gram-negative organisms are stained violet black.
Gram-positive cells will be stained a purplish-blue tint at the conclusion of the gram staining process. Crystal violet is also taken up by gram negative cells, and much like in gram positive cells, the iodine forms a crystal violet-iodine compound in the cells.Gram's Iodine serves as the mordant. This forms a substantial complex that binds to the crystal violet and attaches to the cell membrane.In Gram negative bacteria, there is a thin peptidoglycan layer sandwiched between two thin cell membranes. The bacteria are first rinsed with crystal violet, a purple stain, then iodine to perform a Gram stain. Iodine and crystal violet combine to generate massive complexes that adhere to cells and color them purple.learn more about gram staining here: https://brainly.com/question/13561218
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What type of spider is this, i just got bit by it
Answer:
It is not actually a spider it is a tick known as the American dog tick or the wood tick.
Explanation:
I hope this helps.
__________ will increase soil nitrates, while ___________ will decrease soil nitrates.
Animal manure will increase soil nitrates, while fast growing crops will decrease soil nitrates.
What will decrease soil nitrates?
Denitrification and dissimilatory nitrate reduction to ammonium (DNRA), two significant nitrate-reducing mechanisms in soil, are in charge of nitrate (NO 3 ) loss and the creation of nitrous oxide, a powerful greenhouse gas (N2O).
What increases nitrogen in soil?
Naturally occurring sources of nitrogen addition to soil include air deposition from rainfall and N fixation by soil bacteria and legumes. Usually, fertilizers, manure, or other organic sources provide the crop with extra N.What causes low nitrogen in soil?
N deficiency is associated with the type of soil and is typical in sandy, well-drained soils with rapid nitrogen loss. Overwatering owing to excessive irrigation and heavy rains results in nitrogen shortage. The ability of plant roots to absorb water-soluble nutrients is hampered by a lack of soil moisture.Learn more about soil nitrates
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The arrival of a nerve impulse at the synaptic knob of a motor neuron causes synaptic vesicles to release _____ into the synaptic cleft.
A Final statement or concluding statement
The arrival of a nerve impulse at the synaptic knob of a motor neuron causes synaptic vesicles to release acetylcholine into the synaptic cleft.
What is released by synaptic knob?A neurotransmitter-containing membrane-enclosed vesicle fills the synaptic knob. The synaptic knob's arrival of an action potential opens [tex]Ca^{2+}[/tex] channels in the plasma membrane. Some of the vesicles undergo exocytosis in response to the [tex]Ca^{2+}[/tex] influx. The synaptic cleft receives the discharge of their neurotransmitter. The receptors on the postsynaptic membrane are where the neurotransmitter molecules bind. These receptors are ion channels that are ligand-gated.
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The _ states that the forces that are changing Earth's surface today are the same forces that changed Earth's surface in the past
The uniformitarianism states that the forces that are changing Earth's surface today are the same forces that changed Earth's surface in the past which is because of the presence of the same types of agents being present.
What is Uniformitarianism?This type of doctrine which was founded by James Hutton and made popular by Charles Lyell in the 19th century talks about how the earth's geologic processes are the same as a result of the agents of weathering being the same in this type of scenario.
Weathering on the other hand can be defined as the process in which rocks are broken down into smaller particles to form different types of soil. The agents of weathering has been the same today and in the past which makes it constant.
Hence, the reason why Uniformitarianism was chosen as the most appropriate choice.
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When taking blood pressure, the sounds heard when the pressure cuff is released are due to ________.
When taking blood pressure, the sounds heard when the pressure cuff is released are due to Rising of the Systolic Pressure above the cuff pressure.
When deflating the cuff, the first sound is due to the Systolic Pressure. The cuff pressure is released by the opening of the airflow valve in a counterclockwise direction. The sound heard is a Sharp Tapping sound.
Systolic pressure is the pressure generated due to contraction of heart and Diastolic pressure is generated due to the relaxation of the heart.
Blood Pressure is measured by a device called Sphygmomanometer.
The sounds heard on releasing the pressure cuffs are due to the change of flow of blood through the artery. These sounds are called Korotkoff sounds. These are generated when the cuff pressure is changed which changes the flow of blood through the artery.
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After a signal binds to a signal receptor, the next step is transduction. Why is the signal transduction step necessary?.
The correct option is (C).
The more molecules that share the responsibility of passing the signal to activate the effector the more quickly and efficiently the message can spread.
What is Signal transduction?
The process by which a cell responds to substances outside the cell through signaling molecules found on the surface of and inside the cell.Three steps can be identified in cell signaling: A cell recognizes a signaling chemical coming from outside the cell, Transduction: The receptor protein is altered in some way when the signaling molecule attaches to it and finally, the signal causes a particular biological reaction.Because multicellular animals must coordinate the actions of hundreds to trillions of cells, signal transduction systems are particularly crucial in these systems. Cell-to-cell communication is made possible by a variety of methods that multicellular organisms have created.Learn more about the Signal transduction with the help of the given link:
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I understand that the quesion you are looking for is "After a signal binds to a signal receptor, the next step is transduction. Why is the signal transduction step necessary?
(A) The signal transduction pathway is not necessary since the signal can directly activate the effector.
(B) Transmission of the signal through multiple relay molecules before activating an effector is not efficient.
(C) The more molecules that share the responsibility of passing the signal to activate the effector the more quickly and efficiently the message can spread.
(D) The efficiency increases when less molecules share the responsibility of moving the signal from one molecule to the next to activate the effector."
The ________ is a region of dense bone that surrounds and protects the membranous labyrinth. vestibule membranous callus bony callus bony labyrinth auditory ossicle
The bony labyrinth is a region of dense bone that surrounds and protects the membranous labyrinth.
Labyrinth is the name given to the inner ear. It is made up of a network of interconnecting sacs and canals. The inner ear is composed of two parts: bony labyrinth and membranous labyrinth. A vestibule, three semicircular canals, and a spirally wound cochlea make up the bony labyrinth. It is perilymph-filled.
The membranous labyrinth is encircled by the bony labyrinth. It includes the hearing and balance sensory receptors. The cochlear duct, saccule, and utricle and three semicircular ducts that make up the endolymph-filled membranous labyrinth. The cristae, an organ of corti, and the ampullaris maculae are examples of sensory receptors.
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The cns (central nervous system) is lacking in animals that have ________.
a. a complete gut
b. a closed circulatory system
c. radial symmetry
d. excitable membranes
The central nervous system is lacking in animals that have radial symmetry because radial symmetry has a shape of symmetry where distinguishable parts are organized in circular mold around the central p-ivot. Thus, option C is correct.
What is radial symmetry?Radial symmetry is a form of symmetry in which identical parts are arranged in circular pattern around the central axis.
Animal having radial symmetry can be divided into equal halves when cutting through the central axis.
Animals such as starfish, Hydra and coelenterata shows radial symmetry.
Therefore, the central nervous system is lacking in animals that have radial symmetry.Thus, option C is correct.
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The apical bud of a shoot produces ________, resulting in the inhibition of lateral bud growth.
Auxin, which is produced by the apical bud, encourages the growth of apical buds while inhibiting the growth of lateral buds that are located lower on the stem, toward the axillary bud.
What does a shoot's apical bud produce?Auxin, a hormone produced by the apical bud, travels via the plant's circulatory system (phloem) down the stem and prevents axillary buds from expanding, which would otherwise result in the production of additional side shoots from the plant cells.
What function does auxin serve?Auxin plays a crucial role in controlling plant growth and development by regulating embryonic development, root and stem tropisms, apical dominance,and the transition to blooming..
What are the four roles that auxins play?Its primary uses are to stimulate shoot growth in culture and to enhance lateral and accidental shoot growth.aids in overcoming auxin-induced apical dominance.encourage the development of leaves' chloroplasts.encourages the mobilization of nutrients and delays leaf senescence.learn more about Auxin here
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