Salivary amylase will be active for only an hour or so because the optimum pH for activity of amylase is about 6.7–7.0 which is available in the mouth but the pH of the stomach is acidic around 1-2 due to which the amylase enzyme becomes inactive in short-time.
The lingual lipase enzyme is present in the saliva but isn't active until reaching the stomach because this enzyme is acid stable and works efficiently in the stomach, not in the mouth.
Amylase enzyme is secreted in the mouth and is responsible for the breakdown of starch in food into sugars and it starts acting as soon as we put food in the mouth whereas Lingual lipase enzyme is secreted along with saliva but it is not active in the mouth rather its activity starts in the stomach which is responsible for the degradation of triacylglycerol molecules.
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Hormones are chemical molecules produced by endocrine glands. One such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. Which two statements describe the probable reason for the function of the hormone?
The cells in the heart have specific receptors that allow for the intake of hormones.
The heart and the endocrine glands have the exact same types of cells.
All cells make the same types of hormones.
Thyroid hormones show their effect on the heart by means of specialized cells.
Thyroid cells and cardiac cells have different DNA.
The correct statements are
Statement(1) : The cells in the heart have specific receptors that allow for the intake of hormones.
Statement(4) : Thyroid hormones show their effect on the heart by means of specialized cells.
What are hormones?Hormones are chemicals that coordinate many bodily processes by sending information to your organs, skin, muscles, and other tissues through your blood. Your body receives these messages that instruct it when and what to do. Your life and health depend on hormones.
Your endocrine system is composed primarily of the glands and tissues that produce and secrete hormones. Numerous physiological functions are regulated by hormones.
What are thyroid hormones?The key hormone in charge of regulating how quickly your body's metabolism works is the thyroid hormone. Thyroid hormone is essential for baby brain development. Thyroid hormone is produced and released by your thyroid, a little gland in the shape of a butterfly that is tucked under the skin at the front of your neck. Your endocrine system contains it.
What are endocrine glands?The network of glands in your body known as the endocrine system produces the hormones needed for cells to communicate with one another. They are in charge of practically every cell, organ, and bodily process. The endocrine system is made up of several glands.
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The two statements are: The cells in the heart have specific receptors that allow for the intake of hormones and Thyroid hormones show their effect on the heart by means of specialized cells.
What are hormones?Hormones are chemical messengers produced by endocrine glands that regulate various physiological processes and behaviors in the body. They are secreted into the bloodstream and carried to target cells or organs where they exert their effects by binding to specific receptors. Hormones play a crucial role in maintaining homeostasis, coordinating growth and development, regulating metabolism, controlling reproductive functions, and influencing mood and behavior.
Different endocrine glands produce different types of hormones, each with its specific functions and target tissues. Examples of hormones include insulin, cortisol, estrogen, testosterone, and thyroid hormone. The precise balance and regulation of hormones are essential for the proper functioning of the body and maintaining overall health and well-being.
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Peter and rosemary grant began studying the galapagos finches in 1973. For about 40 years, they studied the finches on daphne major. Why was this an ideal place to study the evolution of the finches?.
Peter and rosemary discovered a natural ecosystem with an extreme climate, oscillating between cycles of intense drought and abundant rainfall, as well as an uncontaminated area that had never been explored by humans. This was an excellent location to study the evolution of Galapagos finches.
For their outstanding long-term studies showing evolution in action in Galápagos finches, Peter and Rosemary Grant are renowned.They have shown that natural selection is responsible for the incredibly quick changes in body and beak size in response to variations in the availability of food.Due to the lack of predators or rivals for the finches, Daphne Major makes an excellent location for research. (The cactus finch is the only other finch on the island.) The weather, and consequently the availability of food, has a significant impact on the medium ground finch's capacity to survive.learn more about Galápagos finches here: https://brainly.com/question/960688
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All of the following are iron-binding proteins found in humans EXCEPT Group of answer choices ferritin. siderophorin. hemoglobin. transferrin. lactoferrin.
All of the following are iron-binding proteins found in humans EXCEPT siderophorin.
Serum proteins, or iron-binding proteins, are found in the blood and are utilized to bind and transport iron, as their name implies. The multifunctional protein of the transferrin family is called lactoferrin (LF), also referred to as lactotransferrin (LTF).Based on the structure of their active site, iron-dependent enzymes can be categorized into three major classes: non-heme mono-iron, non-heme diiron, or heme centers. These enzymes catalyze a wide range of biological events.The oxygenase are a well-known set of iron-dependent enzymes that aid in the addition of one or both oxygen atoms to a hydroxyl group.Iron-binding enzymes include transferrin, lactoferrin, hemoglobin, and ferritin.However, siderophorin are iron chelating compounds found in bacteria and fungi.learn more about iron-binding proteins here: https://brainly.com/question/17246364
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A rock resting high on a cliff is an example of an object with
what type of energy? (2 points)
Kinetic energy because it is doing work
O Kinetic energy because it has the ability to do work
Potential energy because it is doing work
Potential energy because it has the ability to do work?
Answer:
Potential energy because it has the ability to do work
Explanation:
Kinetic energy is when an object is doing work, and potential energy is when an object has the potential to get kinetic energy either due to it's position or molecular composition. In this case since the rock is resting high on a cliff, it has a bunch of potential energy, due to it's position, because gravity. If it were to fall of the cliff, it would then convert that potential energy to kinetic energy, but at that moment, since it's resting, it's only potential energy, because it has the potential to convert into kinetic energy. So the correct answer is: Potential energy because it has the ability to do work
Gene got medicare before he turned 65 and enrolled into a medicare advantage plan. He calls in february the month before his 65th birthday and is unhappy with his current plan. On the date of the call, what can gene do about his coverage?.
On the date of the call, gene can wait to be 65 years old and prepare the necessary documentation, as medicare is by law to be integrated to people aged 65 and over.
How Old Are People Generally Eligible for Medicare?If they are 65 years of age or older. Are on kidney dialysis or have had a kidney transplant. Are under 65 with certain disabilities.
With this information, we can conclude that Medicare is a program jointly funded by the federal and state governments to help pay for health care.
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A group of students wanted to compare the rate of respiration in four different fruits, as well as in tomatoes.
a. For this experiment, state the independent variable and the dependent variable, and suggest one variable
that should be fixed.
In this case, the dependent variable is the rate of respiration, the independent variable is the type of plant (either fruit or tomatoes), whereas a fixed variable may be the temperature.
What is a dependent variable?A dependent variable is any type of experimental condition that is modified during the experiment.
Conversely, independent variables do not change along the experimental procedure (e.g., type of plant).
Finally, a fixed variable, also known as a control variable, is any condition that remains stable during the experimental procedure (in this case, for example, room ambient temperature).
In conclusion, the dependent variable is the rate of respiration.
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The mineral substances that are normally found in the blood, such as sodium and potassium, are known as ____________________.
The mineral substances that are normally found in the blood, such as sodium and potassium, are known as Electrolytes.
Who are electrolytes?Electrolytes are minerals that carry an electrical charge when they are dissolved in a liquid such as blood. Blood electrolytes – sodium, potassium, chloride and bicarbonate – help regulate nerve and muscle function and maintain an acid-base balance.
Major Electrolytes are Sodium, potassium, calcium, phosphate and magnesium are the electrolytes involved in salt balance disorders. In addition, the concentration of chloride and bicarbonate is commonly measured.
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What is another
way that producers
convert energy,
besides
photosynthesis?
A. chemosynthesis
B. decomposition
C. cellular respiration
Answer:
A
Explanation:
Because chemosynthesis is the biological conversion of one or more carbon-containing molecules and nutrients into organic matter using the oxidation of inorganic compounds or ferrous ions as a source of energy, rather than sunlight, as in photosynthesis. So it can only be this because decomposition is something decaying and cellular respiration is the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.
Which of the following statements about turning points in environmental policy is true? a. Environmental policy has changed over time as a result of pressure from industry. b. Turning points in environmental policy were typically the result of urban expansion. c. Turning points in environmental policy have come about through increased public awareness. d. Environmental policy has changed little over the history of the United States. Please select the best answer from the choices provided
The True statement about turning points in environmental policy is :
( C ) Turning points in environmental policy have come about through increased public awareness.
Turning point in environmental policies
The turning points in environmental policy came through the increase in public awareness on the importance of a safe and habitable environments for habitants. Environmental policies have relatively remained the same over time but have continued to gear support from all corners therefore an increase in public awareness.
Hence we can conclude that Turning points in environmental policy have come about through increased public awareness.
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When Nibras was chased and attacked by a dog during his regular morning run, he experienced the classic symptoms of the fight-or-flight response. According to Walter Cannon, it is likely that Nibras's sympathetic nervous system stimulated his adrenal medulla to secrete hormones called:
According to Walter Cannon, it is likely that Nibras's sympathetic nervous system stimulated his adrenal medulla to secrete hormones called catecholamines.
A catecholamine is a monoamine neurotransmitter, an organic compound that has a catechol and an aspect-chain amine. Catechol can be either an unfastened molecule or a substituent of a larger molecule, in which it represents a 1,2-dihydroxybenzene organization.
A kind of neurohormone (a chemical that is made by means of nerve cells and used to ship signals to different cells). Catecholamines are crucial in strain responses. excessive degrees purpose high blood stress that could lead to headaches, sweating, pounding of the heart, pain inside the chest, and anxiety.
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If an animal has radial symmetry, what phylum is it classified to be?
A) Porifera
B) Platyhelminthes
C) Rotifera
D) Cnidaria
Answer:
D-Cnidaria
Explanation:
took the test
If a diploid cell has 12 chromosomes in prophase i, how many chromatids will the cell have at the completion of anaphase i and anaphase ii?
#1
always 12
#2
12 and 6
#3
36 and 24
#4
24 and 12
4) 24 and 12
What happens during anaphase I and anaphase II stage?One of the two cell divisions is meiosis. From a single parent cell, it generates four daughter cells. Each cell has half of the parent cell's chromosomes. Meiosis I and Meiosis II are the two primary mechanisms that cause meiosis. Four subdivisions make up each meiosis. In meiosis I, anaphase I takes place, and in meiosis II, anaphase II. The homologous chromosomes are pulled apart and moved to the opposite ends of the cell during anaphase I, whereas during anaphase II, the sister chromatids of each chromosome are separated and moved towards the poles. Additionally, anaphase I happens when a cell is in the diploid condition, but anaphase II happens when a cell is in haploid condition.
The cell has 12 chromosomes, after anaphase I stage each chromatid is considered a separate chromosome structure, hence there will be 24 chromosomes. After meiosis I is complete the number of chromosomes again become 12 because of the division of the nucleus.
At anaphase II, the sister chromatids are separated hence, the number of chromosomes remain 12.
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The edge of a continent where the ocean water is shallow is called the
A) abyssal plain
B) ocean trench
C) mid-ocean ridge
D) continental shelf
Answer:
D. Continental Shelf
Explanation:
Continental shelves have shallow waters before the continental slopes and then to the deep ocean. A continental shelf is the edge of a continent lying beneath the ocean. Also, it is in the name, Continental Shelf.
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Elle wanted to test how temperature affects the rate of evaporation. She had
three setups:
Setup 1: Elle placed a container with 1 cup of water at room temperature
(25°C).
Setup 2: Elle placed a container with 1 cup of water in a warm room (45°C).
Setup 3: Elle placed a container with 1 cup of water in a cold room (0°C).
Which setup was the control?
A. There was no control.
B. Setup 1
C. Setup 2
D. Setup
Setup 1 was the control of this experiment designed by Elle to test how temperature affects the rate of evaporation. Thus, the correct option is B.
What is Evaporation?Evaporation may be defined as a methodology where liquid transforms into a gas below the temperature at which it boils.
Setup 1 was the control because the room temperature (25°C) is an optimum temperature, where no chemical as well physical properties allow the substances to transform into another state.
Therefore, the correct option for this question is B.
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The virus introduced to the island in 1982 that reduced the wolf population is an example of ________.
The virus introduced to the island in 1982 that reduced the wolf population is an example of a density dependent factor.
In ecology, a density-dependent factor, also known as a regulatory factor, is any force that modifies the size of a population of living creatures in response to population density.
Because of their propensity to maintain population densities, density-dependent factors are also known as regulating factors.
Population size and a density-dependent factor's level of control are correlated, therefore an increase in population will increase the influence of the limitation. Density-dependent factors involve biotic factors such as availability of food , predation, competition, parasitism and disease.
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Biology question on human digestive system
Answer:
X : A) To absorb amino acids
Y : B) To secrete enzymes
Answer:
X) C. to transport fats
Y) C. to secrete enzymes
Explanation:
The epithelium or "Y" is responsible for the absorption of nutrients, and the protection of the human body from microbial infections.
The lacteal or "X" absorbs dietary fats in the villi of the small intestine. It absorbs and transports large molecules, fats, and lipids in the digestive system.
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An owl eats it's pray while or in large pieces. summarize what is found in an owl pellet an why is regurgitated
Pellets are the portions of a bird's diet that have not been digested and are regurgitated. Examples of pellets include hair and bones . Pellets are produced by a wide variety of bird species, including but not limited to birds of prey, crows, and even sparrows.
Owl pellets consist of indigestible elements of their prey, such as bones, fur, claws, and teeth. However, they perform another crucial function for the owl. Regurgitating pellets, which travel through the bird's gullet on the way back up, scrub and clean the digestive tract, eliminating infections and maintaining the bird's health. Those who raise birds of prey like owls and falcons can utilize the pellets to determine the health of their birds.
Prey animals, such as field mice, have learnt to avoid the pellets since they are infectious agents. However, certain owl pellet pathogens, such as Salmonella, can potentially infect humans.
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Which of the following is true regarding deductive reasoning but NOT inductive reasoning?
It begins with a theory.
It begins with a theory.
It is an open-ended approach.
It is an open-ended approach.
It begins with an observation.
It begins with an observation.
It results in a conclusion.
The following is true regarding deductive reasoning but NOT inductive reasoning it results in a conclusion. Thus, option "D" is correct.
What is deductive reasoning?In deductive reasoning , the researcher begins with a theory and uses research to test the theory.
In the deductive approach, the theory must be tested through the collection of significant facts that prove the theory is true. In the inductive approach, the researcher does many observations and collects data. With this data, the researcher constructs a theory to explain these facts.
Thus, option "D" is correct since in In deductive reasoning , the researcher begins with a theory and uses research to test the theory.
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suggest how lack of oxygen could affect the operation of the cell membrane of the motor neuron
Answer:
Oxygen in the blood is required for function of neurons to fire constantly and be in action to transmit information.
Lack of oxygen causes disruption of mitochondrial respiration in motor neurons, disruption of mitochondrial activity, mitochondrial ATP synthesis, defective mitochondrial transport, imbalance in mitochondrial potential ultimately causing atrophy of macular motor neurons in action organs as legs and hands.
This leads to loss of activity of these motor neurons and message passing activity to motor organs eventually. This leads to decrease in functioning or atrophy of motor organs.
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Answer:
Oxygen in the blood is required for function of neurons to fire constantly and be in action to transmit information.
Lack of oxygen causes disruption of mitochondrial respiration in motor neurons, disruption of mitochondrial activity, mitochondrial ATP synthesis, defective mitochondrial transport, imbalance in mitochondrial potential ultimately causing atrophy of macular motor neurons in action organs as legs and hands.
This leads to loss of activity of these motor neurons and message passing activity to motor organs eventually. This leads to decrease in functioning or atrophy of motor organs.
Explanation:
You work in a museum that has a huge, beautiful, stained-glass window. Each panel tints the light a different color. Recently a new exhibit showcasing plants from around the world has set up a table in front of the window. Plant 1 is in front of a blue stained glass, Plant 2 is in front of a purple stained glass, and Plant 3 is in front of a green stained glass. Which plant should you tell the museum director to move so it doesn’t become malnourished?
A. Plant 3
B. Plant 2
C. Plant 1
D. All three plants
Answer:
The plant that should be moved to not become malnourished is the plant 3.
Explanation:
The visible spectrum, or optical spectrum, is the portion of the electromagnetic spectrum whose radiation is composed of photons capable of sensitizing the human eye of a normal person. The corresponding range of visible light radiation is identified.
With that being said, plant 3 is in front of a green stained glass. plants have chlorophyll pigment that reflect back the green light, so the green light is least effective for photosynthesis and for that reason it will die as quickly as if it is kept in dark.
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Collections of sympathetic postganglionic axons, parasympathetic preganglionic axons, and some visceral sensory axons that provide complex innervation to target organs are known as ______ plexuses.
Collections of sympathetic postganglionic axons, parasympathetic preganglionic axons, and some visceral sensory axons that provide complex innervation to target organs are known as Autonomic Plexuses.
The solar plexus is the most important autonomic plexus and affords innervation to a couple of abdominal and pelvic organs. The superior mesenteric plexus consists of the superior mesenteric ganglia and is positioned across the advanced mesenteric artery.
The 5 autonomic plexuses include the Celiac plexus (additionally referred to as the sun plexus): This plexus sits in the back of your stomach and innervates organs of your stomach. Auerbach's plexus: This plexus innervates your gut and functions as part of your digestive device.
A nerve plexus is a community of intersecting nerves; a couple of nerve plexuses exist in the body. Nerve plexuses are composed of afferent and efferent fibers that stand up from the merging of the anterior rami of spinal nerves and blood vessels.
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Question
A statistical sample is part of a population taken to estimate a parameter or characteristic of the
entire population.
true or false ?
Which synaptic connection would be most affected by the presence of a GABA antagonist in the cerebellum
The central nervous system (your brain and spinal cord) would be most affected by GABA antagonist.
What is GABA antagonist?In the neurological system, neurotransmitters act as chemical messengers.Neurons communicate with one another to transfer signals along the neurological systems, carrying messages.They may, for instance, send a message from your brain to your hand telling you to avoid danger or from your hand to your brain informing you that a pot is hot.GABA stops some nerve transmissions or signals since it is an inhibitory neurotransmitter.It stops neurons from being stimulated, which is how it works.This indicates that a neuron doesn't act on a message it receives along the way, preventing the message from being passed to other neurons. Functions:When a neuron receives messages, known as "action potentials," the message is transmitted to another neuron through a sequence of stages.However, GABA is present in between 30 and 40 percent of neurons.The GABAergic neurons are those. GABA is released into the synapses where the message is expected to be carried on when GABAergic neurons receive a message.The action potential's likelihood of spreading to neighboring neurons is decreased as a result of the release of GABA. Even while GABA activity only lasts for a few milliseconds, it has a big impact.It induces a soothing effect in the brain.This procedure enables the integration of sensory information in the spinal cord, enabling your nervous system to process and organize information coming from your eyes, ears, nose, and mouth.Learn more about GABA antagonist here:
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A small child has albino characteristics, photophobia, frequent pyogenic infections, and her blood smear shows giant dark granules in her monocytes and granulocytes. What is the probable diagnosis
Chediak-Higashi syndrome is defined as the abnormal fusion of cytoplasmic lysozymes in granulocytes and occasionally monocytes. This condition is associated with albino characteristics, photophobia, and frequent infections (as the granules are dysfunctional and cannot fight infection appropriately).
White blood cells are a part of the frame's immune gadget. They assist the body combat infection and other illnesses. forms of white blood cells are granulocytes (neutrophils, eosinophils, and basophils), monocytes, and lymphocytes (T cells and B cells).
A sort of immune mobile that has granules (small particles) with enzymes that might be launched at some stage in infections, allergies, and asthma. Neutrophils, eosinophils, and basophils are granulocytes. A granulocyte is a type of white blood cell.
Monocytes are a kind of white blood cells (leukocytes) that are living in your blood and tissues to discover and wreck germs (viruses, bacteria, fungi, and protozoa) and do away with inflamed cells. Monocytes call on other white blood cells to help deal with injury and save you from contamination.
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The diversification of reptiles facilitated by the evolution of the reptilian egg is a good example of Group of answer choices parallel evolution. devolution adaptive radiation.
The diversification of reptiles facilitated by the evolution of the reptilian egg is a good example of adaptive radiation.
What is adaptive radiation?
A rapid growth in the number of species sharing a common ancestor that is characterized by high ecological and morphological variation is known as adaptive radiation. It is fueled by organisms' ability to adapt to novel ecological situations.
The formation of their scaly skin, which contains the protein keratin and waxy lipids, limiting water loss from the skin, was one of the major adaptations that allowed reptiles to live on land. Because of this occlusive skin, reptiles and amphibians both use their lungs to breathe rather than their skin for respiration. The phenomenon of adaptive radiation was first observed by Darwin. During the Mesozoic era, the age of reptiles ( dinosaurs), mammals were small, generalized, and rare.
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what’s a non property of water?
Answer:
-it dissolves molecules in the air
-it becomes denser when it freezes.
Acylhomoserine lactones used in quorum sensing regulate their own synthesis by a(n) _________ system. Multiple Choice riboswitch antisense catabolite repression autoinduction
Acylhomoserine lactones used in quorum sensing regulate their own synthesis by an autoinduction system.
Numerous bacteria use acyl homoserine lactones (acyl-HSLs), significant intercellular signaling molecules, to track the density of their population for quorum-sensing control of gene expression. The LuxI family of proteins produces the signals in question.A lot of proteobacteria use quorum-sensing signals from acyl-homoserine lactones. Cells create a baseline amount of signal at low population densities, and when enough signal has accumulated in the environment, it binds to its receptor and activates quorum-sensing-dependent genes.learn more about Acylhomoserine here: https://brainly.com/question/14452252
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You would expect a cell with many chloroplasts to, secrete a lot of fats, make ATP, do photosynthesis, or store water?
Answer:
Cells with many chloroplast usually aids in the process of photolysis which is helpful in photosynthesis. so we can say that the more is the chloroplast in a plant cell the more is the rate of photosynthesis and ATP is made.
how asthma is caused i just need a short answer
Answer:
These include:
•having an allergy-related condition, such as eczema, a food allergy or hay fever – these are known as atopic conditions
••having a family history of asthma or atopic conditions
having had bronchiolitis – a common childhood lung infection
••exposure to tobacco smoke as a child
your mother smoking during pregnancy
being born prematurely (before 37 weeks) or with a low birth weight
Answer:
your mother smoking during pregnancy
The pH indicator bromothymol blue is an alkaline solution and yellow is an acidic solution. A slight increase in acidity. Such as when co2 gas is added, causes a solution with the indicator to change from blue to yellow. A solution with the indicator would be most likely to turn from yellow to blue when which combination of factors exists?
Water plants in the solution are placed under a bright lamp. Thus, option "B" is correct.
Explain your answer briefly?As we know adding carbon dioxide in as solution result in the change of its acidity this is result in the indicator to change from blue to yellow. In the question, it is asked that what factors from the given option will cause yellow indictor to blue which means what factors cause the solution to be alkaline from acidic.
Placing the green water plants in the solution under a bright lamp will cause the is utilizing and remove present carbon dioxide in the solution and leads the to blue color from the yellow color of the solution.
Thus, this could be the answer.
The question is incomplete, however, the missing part is given as below:
A. Yeast cells and sugar are placed in the solution. B. Water plants in the solution are placed under a bright lamp. C. Algae are placed in the solution and left in a dark room. D. A person blows air into the solution through a straw.
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