Alcohol is used to extract caffeine
Tea's chief component is cellulose, which is not soluble in water. Caffeine is water soluble, but so are tannins and gallic acid, which have been established during the heating process of tea leaves. The latter two components can be converted to insoluble in water calcium salts.
What is solubility?The maximum amount of a substance that will dissolve in a given amount of solvent at a given temperature is defined as solubility.
Solubility is a property of a specific solute-solvent combination, and the solubilities of different substances vary greatly.
It is one of the critical parameters for achieving the desired drug concentration in systemic circulation for the desired (anticipated) pharmacological response.
Caffeine is more soluble in nonpolar methylene chloride than in water, so it will migrate to the methylene chloride layer (known as the organic layer). Because the organic layer is denser than water, it will be at the bottom.
Thus, water can not be used to dissolve the caffeine found in coffee and tea.
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what organ system do you use to
You lift your feet and move your legs as fast as you can
Minerals are prone to destruction by elements such as oxygen, heat, and acid.
True or False
Answer:
True
Explanation:
Minerals are prone to destruction by different elements such as oxygen, heat, and acids treatment. The given statement is true. On treatment with these elements, minerals loose their properties.
What are minerals?
Minerals are the naturally occurring inorganic elements or compounds which posses an orderly internal structure and characteristics with the specific chemical composition, crystal form, and properties such as physical properties and chemical properties. Minerals differ from the rocks, which are the naturally occurring solids that are composed of one or more types of minerals.
Minerals show properties which can be lost by the treatment with different elements. Minerals have been found to be prone to destruction by the elements such as oxygen, heat, and acids. Minerals undergo chemical and physical change on treatment with these elements and form different products which show different characteristics than the parent minerals.
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What is a qualitative observation?
Answer:
A qualitative observation involves the use of five sensory organs, sight, smell, taste, touch, and hearing, and their function to examine the attributes. Being subjective in nature, it focuses on the characteristics and qualities of the variables rather than the numerical value.
Explanation:
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Answer:
A qualitative observation involves the use of five sensory organs , sight,smell ,taste,touch and hearing
Explanation:
A qualitative observation involves the use of five sensory organs, sight, smell, taste, touch, and hearing, and their function to examine the attributes. Being subjective in nature, it focuses on the characteristics and qualities of the variables rather than the numerical value. organs, sight, smell, taste, touch, and hearing, and their function to examine the attributes. Being subjective in nature, it focuses on the characteristics and qualities of the variables rather than the numerical value.
please help me with this i’ll give brainlist
Answer:
(a) base
none of the other make sense
Temperatures have dipped and tourists hoping to enjoy Florida's
balmy climes have been coats to keep warm.
deliberating
withholding
hovering
donning
Answer:
deliberating
Explanation:
The inside of a eukaryotic cell is
divided into the...
A. nucleus and cytoplasm
B. organ and organelle
C. cell membrane and cell interior
D. top and bottom
The inside of a eukaryotic cell is divided into the; A. nucleus and cytoplasm.
What are Eukaryotic cells?Eukaryotic cells are the one that have a well-defined membrane-bound nucleus to house genetic material in it. Eukaryotic cells also have other membrane-bound organelles.
The Cell membrane makes the selectively permeable barrier for the exchange of material with surroundings as; it separates the cytoplasm from the surroundings.
here liquid phase present between the cell membrane and nucleus is called cytoplasm.
The inside of a eukaryotic cell is divided into the; A. nucleus and cytoplasm.
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Which statement describes an effect of economic dominance on society?
A.
Economic dominance encourages education systems to impart moral values to people.
B.
Economic dominance allows people to spend more time with their families.
C.
Economic dominance causes education systems to channel their efforts into imparting skills for the job market.
D.
Economic dominance has led the government to mold its working methods to increase costs.
Which of the following materials would not normally be found in glomerular filtrate?
A. Glucose
B. Urea
C. Water
D. Protein
Answer:
c is Answer
Explanation:
Hope it's HelpfulAnswer:
Glucose
Explanation:
Complete the sentences using the given words.
caldera cinder cone crater
a. A(n) ____________ is a bowl-shaped depression that surrounds the vent at a volcano's summit. b. A(n) ____________ forms in the depression left when an empty magma chamber collapses. c. The type of volcano that is the smallest and has the steepest slopes is called a(n) ____________.
Answer
A) crater
B) caldera
C) composite
the path of a nerve signal involved in kicking a ball .When and where do you motor or sensory nerves fire?
Answer:
Explanation:
the path of a nerve signal involved in kicking a ball .When and where do you motor or sensory nerves fire?
The nervous system is made up of two parts. Each part contains billions of neurons. The first part is the central nervous system. It contains the brain and spinal cord, which is a fibrous, ropelike structure that runs through the spinal column down the middle of the back.
The other part is the peripheral nervous system. It consists of thousands of nerves that connect the spinal cord to muscles and sensory receptors. The peripheral nervous system is responsible for reflexes, which help the body avoid serious injury. It's also responsible for the fight or flight response that helps protect you when you feel stress or danger.
Let's examine an individual neuron up close.
Here is a peripheral nerve. Each one of the nerve bundles, or fascicles, contains hundreds of individual nerve.
Here's an individual neuron, with its dendrites, axon, and cell body. The dendrites are tree-like structures. Their job is to receive signals from other neurons and from special sensory cells that tell us about our surroundings.
The cell body is the headquarters of the neuron. It contains the cell's DNA. The axon transmits signals away from the cell body to other neurons. Many neurons are insulated like pieces of electrical wire. The insulation protects them and allows their signals to move faster along the axon. Without it, signals from the brain might never reach muscle groups in the limbs.
Motor neurons are responsible for voluntary control of the muscles all over the body. The operation of the nervous system depends on how well neurons communicate. For an electrical signal to travel between two neurons, it must first be converted to a chemical signal. Then it crosses a space about a millionth of an inch wide. The space is called a synapse. The chemical signal is called a neurotransmitter.
Neurotransmitters allow the billions of neurons in the nervous system to communicate with one another. That's what makes the nervous system the body's master communicator.
1) why should we always breathe through the nose and not through the mouth ?
Answer:
Below
Explanation:
The nose is lined with hairs which act as a filter for particles like dust, pollen and other allergens so they don't enter your lungs.
Your nose also preheats the air you breath in.
which of the following statements is NOT part of the cell therory
Answer:
it is accepted that cells contain DNA in chromosomes and RNA in the nucleus and cytoplasm, but only in the modern cell theory. the classical cell theory does not include this. but using either classical or modern theory, it is false that all cells have DNA surrounded by a nucleus.
Explanation:
Hope this helps.
in developed countries which of the following is a positive effect of agricultural changes in the past century?
A. Desertification
B. Clearing rainforests
C. Contamination due to run off
D. Amount of food produced has increased
E. Nutrient rich soil for farmland increasing
In developed countries , amount of food produced being increased is a positive effect of agricultural changes in the past century.
Agricultural changes in developed countries were set up such as application of fertilizers etc so as to achieve a maximum yield as the increasing population all over the world means increase in food production to cater for individuals and to prevent starvation and death.
Agricultural changes were also done to ensure goods produced have a very high quality.
The remaining options such as Desertification, Clearing of rainforests and contamination can be referred to as part of the negative effect of agricultural changes in the past century.
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PLEASE HELP ME IF YOU DONE THIS BEFORE Part 1: Introduction
Title
Title your lab report with a few words that
summarize the lab investigation
Purpose
The lab report should begin with one or two
sentences that state the purpose of the
investigation what you want to see, practice, loam
about, or test. The purpose statement answers the
question "What am I trying to find out by doing this
experiment?"
The three most common types of labs are:
inquiry labs, in which you measure how
changing one variable affects another variable
discovery labs, in which you observe a scientific
phenomenon, perhaps for the first time.
forensic labs, in which you gather and analyze
data as evidence to build an argument in
response to a question, as in a court case,
All three types of labs give you an opportunity to
learn important scientific skills and concepts.
Question
At its core, science is about inquiry, or the act of
asking questions and seeking answers. Most labs
begin as the result of a question, which is why the
introduction of your lab report should include a
question. For example, suppose you notice that you
seem to play basketball better at the court in one
park than in another. After conducting research, you
realize that one of the surfaces of the court at the
park is different from that of your driveway. As a
result, you might formulate the scientific question
"What effect does the court surface have on the
height that the basketball bounces?" To answer this
question scientifically, you could perform several
experiments and gather data,
Hypothesis (or Prediction)
A hypothesis is an initial answer to a question, a
possible explanation or expectation based on prior
knowledge or research. Before starting most lábs,
you will formulate a hypothesis. It should be listed in
the introduction of your tab report
A good scientific hypothesis states conditions,
expected results, and possible reasons for those
results, For example, you could respond to the
basketball question with a hypothesis like "If the
court surface is smooth concreto, as the park's
court is, then the basketball will bounce higher,
because smooth surfaces have better contact with
the ball." Like this hypothesis, hypotheses are often
structured using the format "il then, because
which is described below.
The "it' portion of the hypothesis describes
something that you will change in the experiment
• The "then" portion of the hypothesis describes
what you think will happen as a result of that
change
• The "because" portion of the hypothesis
describes the ason why you think that change
will occur
In other laboratory activities you will be asked to
make a prediction. You will conduct background
research, then predict the outcome of a known
scientific process
Special Note about inquiry Labs
For inquiry labs, questions are generally
written in the form of "What is the effect of X on
Y?" Hypotheses will generally be in the form of
X [describe how you will change X during the
experiment), then Y will predict how y will
change in response), because give your
reason." In many inquiry labs the variables
lend themselves to a scatterplot (X-Y plot)
For anyone else who needs help just write an essay on what ionic bonds are. Then write what covalent bonds are. Then write the difference between them. It’s better than getting in trouble for using someone else’s work.
The student guide made it very confusing as if you were doing a project but it’s not, it’s just an essay.
Answer:
Was gonna use some links but {insert anger} brainly doesn't allow it.
Explanation:
There are primarily two forms of bonding that an atom can participate in: Covalent and Ionic. Covalent bonding involves the sharing of electrons between two or more atoms. Ionic bonds form when two or more ions come together and are held together by charge differences.
Search up: "Ionic bonds vs Covalent bonds" if you need more to write about
What is the purpose of strand B?
a.) To act as a template for the synthesis of messenger RNA
b.) To carry the code from the DNA molecule in the nucleus to the ribosome
c.) Delivers specific amino acids to the ribosome to make proteins
d.) Transfers nucleic acids to the nucleus
Answer:
The answer is a)
Explanation:
Hope it is helpful for you ✌️
what are the objective of air pollution?plz guys ans.
Answer:
Aims of Air Pollution.
Explanation:
The four main types of pest
Answer:
1) Insect
2) Mites
3) Rodents
4) Animals
5) Birds
Explanation:
1) These are significant and significant pests. Insects have three pairs of legs, two pairs of wings, a segmented body, and complex eyes and antennae that are unique to them. Insects are smart, extracting sap from plants, biting plant parts, burrowing into fruits, twigs, and leaves, attacking roots, barks, and blooms, among other things. Larvae, adults, and nymphs are the stages of insect pests that cause harm.
2) These are insect-like organisms with a soft body and four pairs of legs. The colour of these small organisms is red or pastel yellow. They feed on the plant's sap and attack the crops in large numbers.
3) This bug consumes a considerable amount of human food and causes widespread crop damage. They're also to blame for massive grain losses on fields, in warehouses, and in homes.
4) Wild boars, deer, elephants, buffalo, jackals, monkeys, and squirrels are among the animals that inflict direct harm to agricultural plants. They devour the plants and, as a result, squander a tremendous amount of food.
5) Birds devour grains and destroy crop plants. Crows, parrots, and sparrows are among the most common birds that prey on crops.
(Hope this helps can I pls have brainlist (crown)☺️)
b. If the fly experienced a force of 100 N when it hits, how big was the force
on the vehicle in this collision?
Sater Science
Answer:
I think you answered your own question
1. A severe weather watch means which of the following?* (
(1 Point)
The conditions are right for severe weather, but it is not occurring yet.
Severe weather is occurring
Severe weather has passed through and it is now safe to go outside
It is the season during which type of severe weather concerned occurs.
Answer:
Its the first one because a watch means it could happen (this one is random) but if its a warning that means EVACUATE AHHHHHHHHHH.
Explanation:
Your welcome :3
What does mRNA do?
1. carry
carry coded message from the genes to the ribosomes where proteins are built
2. carry amino acids to the ribosomes
3. make up ribosomes
4. help with RNA splicing
Answer:
The answer is 1. Carry coded message from the genes to the ribosomes where proteins are built.
Explanation:
mRNA stands for messenger RNA, so 1 would be correct.
Hope this helps!!
Red bone marrow only differs from yellow bone marrow because of a difference in the amount of which substance?
the amount of antibody
the amount of cytokine
the amount of antigen
the amount of fat
Answer:
The amount of fat
Explanation:
There are two types of bone marrow: red and yellow. Red marrow contains blood stem cells that can become red blood cells, white blood cells, or platelets. Yellow marrow is made mostly of fat.
Answer:
the amount of fat
Explanation:
took the test :)
When nonionic solids dissolve in water, they
Answer:
Substances that do not form ions when they dissolve in water are called non-electrolytes. And example of a non-electrolyte is sugar. Sugar will readily dissolve in water but doesn't form cations and anions in solution. That is, there are no charge carriers formed.
WILL GIVE BRAINLIEST!!
The cell membrane potential is maintained by the ion channels with movement of ions into and out of the cell. Using the model below, if there was a decrease in protein C, what would be a likely outcome?
The membrane will be maintained by an increase of Na+ ions into the cell.
The membrane potential will be disrupted by a decrease in K+ concentration inside the cell.
The membrane potential will be disrupted by an increase in Na+ concentration inside the cell.
The membrane potential will be maintained by an increase in K+ concentration inside the cell.
Answer:
The loss of protein x function would lead to an increase in intracellular potassium ion ( K+) concentration
HURRRRRRRRRRRRRYYYYYYYYYYYYYYYYYYYYYYYYYYYY
Answer:
the answer would be 3 and 4 hope this helps please mark me as brainlyist if right
Explanation:
What is the process X?
Answer:
digestion
Explanation:
since digestion is the breaking down of food particles to smaller sized molecules
Which two body systems work closely together to make sure your body remains in a stable condition
The Circulatory system helps in providing impure blood to heart and taking pure blood to cells with hemoglobin.
The respiratory system handles the coming of oxygen to body and out of carbon dioxide from body
What categories are lymphocytes classified into? (Choose all that apply)
B cells
A cells
NK cells
T cells
Answer: A Cells & NK Cells
Explanation: Well, the A Cells are a mass of cytoplasm that is bound externally by a cell membrane, and NK Cells are innate immune cells.
Answers confirmed by Buzz (Acceleration Education)
Hope this helps! & Please Give Me Brainliest that would help me a lot.
Lymphocytes classified into:-
B cellsNK cellsT cellsWhat are the function of lymphocytes?B-cells are stimulated by an antigen, they proliferate and transform into plasma cells, which produce specific antibodies.T cells includes delayed hypersentivity reactions.It help in graft rejection, graft-versus-host reactions, defense against intracellular organisms, and probably defense against neoplasms.What are lymphocytes?A lymphocyte is a type of white blood cell in the immune system of most vertebrates. Lymphocytes include natural killer cells, T cells, and B cells. They are the main type of cell found in lymph, which prompted the name lymphocyte.
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What would most likely be the effect if an experimental design specifies only an experimental group?
1. The experiment will lack a control.
2. The experiment will lack a purpose.
3. The experiment will not be repeatable.
4. The experiment will not have variables.
Does an enzyme change the reactants/products permanently? Explain.
Answer:
No, because the change of the equilibrium constant for a reaction. Keq depends only on the difference in energy level between reactants and products.
Explanation:
a research about carnivorous plants consists of what information?
Answer: about how they grow and diet and how they do it by it I mean what they do for the process of eating it
Explanation:
