Indicators are substances which possess measurable and observable characteristic which can be used to depict a the acidic or alkaline nature of a substance.
Indicators may be natural, those which exists naturally in nature such as litmus or turmeric.
Indicators such as Phenopthalein or Methyl orange are artifical indicators as they are obtained through laboratory preparation.
Blue litmus paper turns red when dipped into an acid while Red litmus turns blue when in contacts with a base.
Hence, indicators helps to know when a change in pH value of solution occurs.
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Indicators change color in the presence of certain substances, which can be used to identify and quantify those substances.
An indicator is a chemical compound that changes color in the presence of another substance. This property of indicators can be used to observe things that are too small to see, such as individual cells or bacteria.
For example, the indicator litmus paper is red in acidic solutions and blue in basic solutions. This means that by dipping a piece of litmus paper into a solution, you can determine whether the solution is acidic or basic.
Another example of an indicator is the dye methylene blue. Methylene blue is colorless in acidic solutions, but it turns blue in basic solutions. This means that by adding a drop of methylene blue to a solution, you can determine whether the solution is acidic or basic.
Indicators can also be used to quantify the concentration of a substance in a solution. For example, the indicator phenolphthalein is colorless in acidic solutions, but it turns pink in basic solutions. The deeper the pink color, the more basic the solution is. This means that by measuring the intensity of the pink color, you can determine the concentration of the base in the solution.
Indicators are a valuable tool for observing things that are too small to see. They can be used to identify and quantify different substances in solutions.
Here are some additional details about how indicators work:
Indicators work by changing their structure in the presence of certain substances. This change in structure causes the indicator to change color.The color change of an indicator is reversible. This means that the indicator will return to its original color when the substance that caused the color change is removed.The color change of an indicator is specific to the substance that caused it. This means that a particular indicator will only change color in the presence of one specific substance.Indicators are a versatile tool that can be used in a variety of applications. They are used in laboratories to identify and quantify different substances in solutions. They are also used in everyday products, such as litmus paper and pH test strips.
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What is the order of these objects from smallest to largest?
Atom
Tissue
Molecules
Organelle
Organ system
Cell
Organ
Organism
Answer:
ATOM
MOLECULES
CELL
ORGAN
ORGANELLE
ORGAN SYSTEM
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explain about water cycle
Answer:
The water cycle shows the continuous movement of water within the Earth and atmosphere. ... Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow. Water in different phases moves through the atmosphere (transportation).
Explanation:
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Question 2 (1 point)
Which of the following statements is true about photosynthesis and cellular
respiration?
Photosynthesis occurs in plants; cellular respiration occurs in animals.
Both processes are carried out in the same location in the cell.
The chemical equations for the processes are opposite of each other.
The steps in both processes are very similar to each other.
Answer:
Photosynthesis occurs in plants;cellular respiration occurs in animals
answer asap asap!
bio
what three elements are found in chlorofluorocarbons
Answer:
Carbon, chlorine, and fluorine.
Explanation:
Which is a chemical property?
boiling
boiling
burning
burning
freezing
freezing
melting
How does a person become immune against a disease?
Internal forces of sources which what is exert on each other in the bodies are part of the system is 
Answer:
Internal forces are those forces which exert on each other when the bodies are part of the system. The forces acting between the atoms of molecules that keep them together are example of internal force.
Explanation:
1. The blood vessel that carries deoxygenated blood to the heart.
A. aorta
B. pulmonary vein
C. pulmonary artery
D. vena cava
which sequence is correct about the circulation process?
A. deoxygenated blood > left heart > aorta > organs > oxygenated blood > vena cava .> right heart
B. oxygenated blood > right heart > lungs > deoxygentaed blood > vena cava > left heart > aorta > organs
C. deoxygenated blood > aorta > left heart > lungs > oxygenated blood > right heart > vena cava > organs
D. oxygenated blood > left heart > aorta > organs > deoxygenated blood > vena cava > left heart
Which of the following is NOT a function of valves?
A. To allow blood in the big arteries to flow out and not back into the heart.
B. To filter the the blood cells as they pass through the vessels.
C. To let blood flow in one direction, towards the heart in veins.
D. To allow blood flow from the upper chamber to the lower chamber of the heart.
Answer
The first one is vena cava.
Not sure abt the 2nd and 3rd. Sry
Answer:
1. D
2. A
3. A
Explanation:
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what is the speed of the wave if the frequency is 4Hz and the wavelength is 2.5m?
Answer:
32 meeters/ seconds
Explanation:
what is photosynthesis
Explanation:
It is a process by which the plants prepare glucose by using sunlight
What is the difference between guttation and dew
Answer:
Dew is atmospheric moisture condensing on colder surfaces, and is pure water. Guttation is moisture secreted from within the plant itself, and contains xylem sap. Guttation allows for secretion through the edges of the plant.
Describe an example of a muscle contraction in a lower appendage joint and identify the bones of origin and insertion involved.
Can someone help me with this question?:
what general equation describes cellular respiration? Indicate whether this is a summary of the process or an ordinary chemical equation.
Thank you!
Answer:
C 6 H 12 O 6 + 6 O 2 --> 6 CO 2 + 6 H 2 O + ATP is the complete balanced chemical formula for cellular respiration.
Explanation:
i need help please i don’t know what it is
Answer:
It should be vacuole!
Explanation:
Hope this helps!
Which of the following describes flat inland areas, rich and fertile due to the constant replenishing of nutrients from decomposing grasses?
Estuary
Taiga
Temperate grassland
Tropical rainforest
Answer:
Taiga ,temperate grassland
Temperate grasslands are important biomes characterized by their fertility. The correct option is C. Temperate grassland are flat inland areas, rich and fertile due to the constant replenishing of nutrients from decomposing grasses.
BiomesBiomes are defined according to the vegetation structure and the other forms of life inhabiting them.Their location is determines by the climatic condition in each regions.Temperate grassland is one of the worlds biomes.Temperate grasslandsOpen plane areas covered by herbal vegetation, with a few deciduous woody species. Grasses dominate temperate grasslands.Distributed in the northern and the southern hemispheres.
They are severely affected by fires and tornados.
Fires, droughts, and grazing by animals prevent different woody species from establishing.
Temperature and rains in these regions widely vary with seasons.
The high levels of precipitation and humidity are characteristic of the biome.
Climatic conditions drove grass species to develop large roots to establish to the ground. This characteristic helps to reduce erosion and to keep soil humidity.The soils characterizes for being unusually rich, fertile, and deep.
Temperate grassland are then flat inland areas, rich and fertile due to the constant replenishing of nutrients from decomposing grasses. Option C is correct.
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what is the primary product of the light dependent reactions of photosynthesis?
Answer: Glucose (and also oxygen)
Explanation: Photosynthesis is the process of turning CO2 and H2O in Glucose and oxygen where the chloroplasts use the energy from the sun to rip apart the molecules and rearrange them into glucose, a useable form of energy, and oxygen, a bi product that gets released into the atmosphere.
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What are air plants?
Why don’t they need soil to grow?
How can this science help us cobalt real life problems ?
Answer:
1. Air plants are part of the Bromeliad family, air plants are epiphytes — plants that attach themselves to other plants for support, without relying on the host to thrive.
2. They absorb moisture and nutrients through their leaves, not their roots, which they use only to anchor themselves to other plants or objects. Since air plants don't absorb their nutrients through their roots, they can't be planted in the soil.
3. The internal structure and anatomy of Tillandsia have adapted to survive on varied hosts both alive and not. Their leaves are able to pull moisture from the air more efficiently while some have developed a camel-like ability to store water and survive in areas prone to drought. Being up in trees or on rocky cliffs protects these plants from damage done by foraging animals, flooding or erosion on the ground.
Explanation:
Epiphytic plants can be used to determine the elemental composition of the air and soil in which they grow, cycle nitrogen, affect water retention within the rainforest, and house many resources for various plants and animals.
Through the analysis of epiphytes, biologists can determine changes in air and soil composition over time. Air pollution in the rainforest can be monitored by the use of air plants. By monitoring how mosses and lichens respond to different air pollutants, especially heavy metals, the effect that the toxins have on the environment can be determined In the rainforest, epiphytes can be placed in areas where there is ecological damage to determine if nearby pollutants are affecting the health of the forest and additionally play a role in nitrogen cycling.
someone write me a little intro on water hyacinth please
Answer:
Hello! Today I will tell you somethings about water hyacinth, we will start with what does it do? Well,
Water hyacinth has a variety of negative impacts once introduced into a freshwater environment. it forms dense, impenetrable mats which clog waterways, making boating, fishing and almost all other water activities, impossible. It also reduces biodiversity by crowding out native plants at the water's surface and below.
Well that makes it seem bad is it?
(you will answer this on your own with other things you think someone would ask if you need more info just tell me, thanks!)
Explanation:
which of the following is a solid non metal a carbon b sulphur c Phosphorus d all of these
calculate it your self,you this idiot,fool,olodo
THe father is Rr and mother Rr. What color are the children
Compare the food chain and the food web below. Explain how biodiversity makes one of these more stable than the other. Be sure to use examples from the diagrams. Hint: How does biodiversity in an ecosystem increase organisms’ chances of survival?
(sorry I didn't know what subject to put)
Answer:
A food chain is a linear flow of energy and nutrients from one organisim to another .
A food web can be termed as the combination of many different food chains and the relationship that exists between each organisim
For instance :
FOOD CHAIN FOOD WEB
. A linear pathway . A multitude of networks
showing the flow showing the flew of energy
of energy
. A organisim of higher . An organisim of higher
level trophic feeds on a specifi- trophic level has access
c organisim of lower trophic level. to more members of a
lower trophic level.
. Has no effect on the adaptability
and compatitiveness of organisims . . Has a role in impro-
ving the adaptability
and competitiveness of an
organisim .
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8
What statement is true about cell walls.
1
Cell walls are present in animal cells
O All cells have cell walls
O Cell walls support, shape, and protection the cell
O In plants, cell walls are made of proteins
Answer:
Although 3 and 4 are great answers, I honestly think the answer is C. Because you can simply define the cell wall as a semi-rigid thick protective structure that surrounds the cell membrane of some types of cells for protection and defining the shape of the cell. The cell membrane alone cannot provide the required rigidity or strength. All living organisms are composed of cells. Cell walls contain only little amount of protein in the cell wall.
Explanation:
Not all cells have a cell wall; the cell wall is a rigid covering that protects the cell, provides structural support, and gives shape to the cell. Cell walls are found in both prokaryotes and eukaryotes, although not all cells have cell walls. Animal cells does not have a cell wall; Cell walls provide support and give shape to plants. Plant cells have chloroplasts, but animal cells do not. Chloroplasts enable plants to perform photosynthesis to make food.
9th Grade biology question Please help me
Answer:
a
Explanation:
Answer:
(A)
Explanation:
Simple osmotic pressure will make the water enter the red blood cell thereby making it first lose its biconcave shape, then swell up to a rounder spherical shape and then burst as Kevin Cooke and Andrew Lister have suggested. The process is called hemolysis.
the video compares the key similarities and differences between mitosis and meiosis. determine which events occur in mitosis, meiosis, or in both mitosis and meiosis.
Answer:
Mitosis:
A single division occurs, separating sister chromatids
End result is two diploid cells that are genetically identical to each other and the parent cell
Meiosis:
The first division separates homologous pairs; the second division separates sister chromatids
Homologous chromosomes pair up and form chiasmata
Homologous pairs of chromosomes line up on the metaphase plate
Daughter cells contain recombinant chromosomes
End result is four haploid cells that are genetically different from each other and the parent cell
Mitosis and Meiosis:
Chromosomes duplicate during interphase
Process starts with a diploid cell
Duplicated chromosomes line up Individually on the metaphase plate in a diploid cell
Explanation:
Mitosis is the division of vegetative cells while meiosis involves the division of sex cells. Both divisions start with diploid parental cells but while the daughter cells in mitosis are also diploid, those of meiosis are haploid. This is why mitosis is referred to as equational division while meiosis is known as reductional division.
A cell that will undergo mitosis or meiosis would first have its genetic materials duplicated during interphase in addition to the synthesis of other important biochemicals such as proteins. Mitosis involves just a single division of the sister chromatids with two genetically identical daughter cells who are also clones of the parent cells resulting.
Meiosis, on the other hand, involves two divisions - the first one happens to separate homologous chromosome pairs while the second division separates sister chromatids just like in mitosis. During the early stage of meiosis, homologous chromosomes synapsed through the formation of a synaptonemal complex to form tetrads. Thereafter, synapsed chromosomes exchange chromosomal segments at a point known as chiasmata. All these happen at the prophase stage of meiosis I. The paired homologous chromosomes are then lined up at metaphase where they are engaged by the spindle fibers.
Meiosis II and mitosis are more or less the same with the chromosomes condensing at the prophase and the formation of metaphase plates at the metaphase. Sister chromatids are pulled apart and they migrate to the opposite poles at the anaphase and telophase.Explanation:
How is an aponeurosis functionally similar to a tendon?
Answer:
An aponeurosis is functionally similar to a tendon because, like a tendon, it is connective tissue that attaches muscles to bones.
Identify the type of force that is important in forming atoms, stars and planets.
Answer: First, gravity is the force that pulls us to the surface of the Earth, keeps the planets in orbit around the Sun and causes the formation of planets, stars and galaxies. ... The Strong Nuclear Force binds the nucleus of an atom together.
Explanation:
how to do this question plz answer
This is because mitochondria produce ATP during aerobic respiration and ATP is needed for muscle to contract. Muscles cells contain more mitochondria because they have to release large amount of energy quickly for movement.
Please help me with 11-12 thank you so much
11. Flames consume and use energy, require oxygen, and moves through the environment.
12. Although it consumes oxygen and produces carbon dioxide like living things, it is nonliving because it has no body or structured cell system.
What happens to the oxygen
that is formed when water molecules
are split during photolysis
Answer:
Since photolysis is the splitting of molecules by light, the oxygen that is formed mostly supplies the oxygen in our atmosphere.