The correct answer would be that substance A is rice, and substance B is sugar.
For substance A to be filtered out, it means that A is a water-insoluble substance and for substance B to be recoverable by evaporating off the water, it means that B is water-soluble.
Thus, A can neither be sugar nor alcohol because neither can be recovered by filtration. Also, B can neither be coffee nor alcohol because they can not be recovered as residue through evaporation of water.
Therefore, the only correct answer is that substance A is rice, and substance B is sugar because rice can be filtered out from water while the water-soluble sugar can be recovered by evaporating the water.
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Answer:
substance A is rice, and substance B is sugar.
Explanation:
what is an independent variable
Answer:
Cause or Independent Variable (VI) is the reason, or explanation for the occurrence of another phenomenon. In the experiment, it is the variable that the researcher can manipulate and it is usually called treatment. Effect or Dependent Variable (DV) is the phenomenon that results, the one that must be explained.
steps of Biological method of study taking malaria as an examples
Explanation:
The different steps which are involved in biological method are the the invasion, the rapid division followed by the spread of infection. ... Malaria results in infection after the bite of the female anopheles mosquito. The parasites enter the bloodstream. as a result of this there is predominant infection.
Soil is a mixture of eroded rock and: ii. rhizopus biotic iii. humus i. aquous iv. cycas v. rhizopus
Answer:
organic Matter is the mixture of soil
True or False: Within the body, all atoms combine to form molecules. If false, why?
Answer:
True
Explanation:
Two or more atoms combine to form a molecule, like how the water molecules, proteins, and sugars are found in living things.
Hope this helps! （づ￣3￣）づ╭❤～
The statement i.e. ''Within the body, all atoms combine to form molecules'' is true.
Atoms combine together to form molecules because atom is unstable substance which can't stay in single form due to its reactive nature but become stable when they form molecules due to filling of outermost shell and attain the electronic configuration of noble gases so we can say that atoms formed molecules in order to attain stability and can not remain individually.
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Which of the following refers to the movement of biochemical and other atomic or molecular substances across biological membranes?
Membrane transport
ATP breakdown
Diffusion
Osmosis
Answer:
diffusion / osmosis passive transport does not require an input of chemical energy.
Explanation:
Please help! Will give Brainliest!
Answer:
A. Do bees fly faster before or after feeding?
Explanation:
Because of the observations made, you can assume the answer has something to do with the bees weight, or wing support. Because the bee probably has a harder time flying when it has more weight on it, the answer is probably A.
Which is the best interpretation of the two flat portions of the graph?
A. These show where the temperature is 0ºC.
B. These show where changes of state are occurring.
C. These show where kinetic energy is increasing.
D. These show where thermal energy does not exist.
Answer:
B, they are changes of state.
The best interpretation of the two flat portions of the graph where these shows that change of state are occurring. Thus, C is correct option.
What are change of state?A state is physical condition of any substances it means that any substance which found on earth are mainly found in three states and these are following:-
1- Solid
2- Liquid
3- Gas
A change of state is physical change of state i.e any substance which changes their state from ( solid to liquid called melting), (liquid to gas called evaporation), (gas to solid called diffusion) etc are called change of state.
These change of state occurs when temperatures or pressure changes in a system or substances. When the temperature or pressure increase the interaction between the molecules also increases.
Therefore,the best interpretation of the two flat portions of the graph where these shows that change of state are occurring. Thus, C is correct option.
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In part A, you analyzed genes that contribute to two diseases. (cystic fibrosis and muscular dystrophy) How can scientists use this information to develop new treatments for these diseases? Based on your findings, do you think that scientists will need to develop multiple treatments to control symptoms of these diseases? Explain your reasoning.
Answer:
By designing suitable gene therapies in order to restore target gene expression.
Explanation:
Cystic fibrosis and muscular dystrophy are inherited genetic disorders associated with serious health problems. Cystic fibrosis is caused by mutations in the gene that encodes for the cystic fibrosis transmembrane conductance regulator (CFTR) protein, and it is a condition associated with abnormal production of sticky mucus that leads to problems in the lungs and the digestive systems. On the other hand, muscular dystrophy is produced by mutations in genes localized on the X chromosome such as, for example, the gene 'dystrophin'. Gene therapy is an experimental approach used to compensate abnormal gene function by introducing exogenous genetic material and thus restore their altered protein products. Consequently, personalized gene therapies can be useful to treat inherited disorders such as cystic fibrosis and muscular dystrophy.
Which of the following descries a solution that contain a buffer? A. Sodium hydroxide, a base, is added to the solution, and the pH of the solution becomes higher. B. Citric acid is added to the solution, but the pH of the solution does not change. C. Acetic acid is added to the solution, and the pH of the solution becomes lower. D. Distilled water is added to the solution, and the pH of the solution does not change.
Answer:
B. Citric acid is added to the solution, but the pH of the solution does not change.
Explanation:
In chemistry, buffer solutions or simply called Buffer are solutions that resist a change in pH when an acid or base is added to them i.e they maintain a constant pH. This is as a result of the content of the solution. A buffer may contain a weak acid and its conjugate base (salt) or a weak base and its conjugate acid.
Hence, when a strong base or acid is added to them, they still restore the original pH of the solution due to the reaction that removes or neutralizes the hydrogen or hydroxide ions from the acid and base added to them respectively. This is what happens when Citric acid is added to the solution, but the pH of the solution does not change.
Citric acid, which is an acid, does not practically increase or decrease the pH of the solution. Hence, the solution is called a buffer.
Answer:
Citric acid is added to the solution, but the pH of the solution does not change.
Explanation:
Got it right on Apex
Hope I helped! :)
How is multi cellularity advantages over increasing the mass of a single cell
Answer:
Multicellular organisms
hoped i helped
Shannon is making a Venn diagram to organize the characteristics of cell walls and cell membranes. Which pair of characteristics both belong in the two areas of the Venn diagram that do not intersect?
helps with communication; contains mostly cellulose
contains mostly cellulose; forms the outer layer of animal cells
is found in plant cells; is found in animal cells
is semipermeable; found in animal cells
Answer:the answer is the second
Because cell wall made up of most cellulose while cell membrane the outer if the animal cell
Answer:
B.
contains mostly cellulose; forms the outer layer of animal cells
Explanation: just took the test(❁´◡`❁)
what is difference between pressure exerted by liquid than by a solid
How high is the ceiling in a school gym if a volleyball thrown upward from the floor at 15 m/s barely touches the ceiling before returning to the ground?
Answer:
11.47 m
Explanation:
Givens
vi = 15 m/s
a = - 9.81 m/s^2
vf = 0
d = ?
Formula
vf^2 = vi^2 + 2ad
Solution
0 = (15)^2 + 2*(-9.81)*d
- 225 = 2 * - 9.81 *d
-225 = - 19.62 * d
d = - 225/-19.62
d = 11.47 m
The height of the ceiling in the school gym from the floor is 11.48m.
HOW TO CALCULATE HEIGHT OF A PROJECTILE:
Using one of the equations of motion as follows:v² = u² + 2as
Where;
v = final velocity (m/s)
u = initial velocity (m/s)
a = gravitational acceleration (m/s²)
s = distance traveled (m)
According to this question,
The final velocity (v) of the volleyball is 15m/sThe initial velocity is 0m/sThe acceleration due to gravity is 9.8m/sUsing the formula, v² = u² + 2as, the height of the ceiling (s) can be calculated as follows:
15² = 0² + 2 (9.8) (s)
225 = 0 + 19.6s
225 = 19.6s
s = 225/19.6
s = 11.48m
Therefore, the height of the ceiling in the school gym from the floor is 11.48m
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Which activity would most likely cause a rapid breakdown of glucose molecules
Answer:
A rabbit running a predator
Explanation:
What is the definition of salinity ?
Answer:
Salinity pertains to the degree of saltiness or the relative proportion of salt in a solution. ... By definition, salinity in relation to limnology refers to the total amount of dissolved solids in water in parts per thousand by weight.
Answer:
Salinity is the saltiness or dissolved inorganic salt content of a body of water. Substances that are dissolved in water are usually called solutes.
Explanation:
Which OF THESE is a reason why a bird 'sings'?
a. To mark out its territory to others of its own species
b. To frighten other birds that may attack / eat it
c. To attract its food like worms and insects
d. To wake up other birds and animals
Quick
land environments are different than water environments
true
false
Answer:
true
Explanation:
because land environment is different from water environment .
Hope it help you
Answer:
True
Explanation:
Fill in the chart using the terms pseudoscience, science, and myths.
Answer:
Science is based on observations and facts.
Pseudoscience and Myths are based on opinions, beliefs, or biases.
Let me know if this helps!
Pseudoscience
Based on observations and facts: Not based on reliable data or scientific procedures. Based on opinions, beliefs, or biases: Relies on human opinion and often lacks empirical basis.Science
Based on observations and facts: Relies on methodological research and empirical data. Based on opinions, beliefs, or biases: Draws conclusions using a scientific approach to gather facts.Myths
Based on observations and facts: Possibly based on folklore, but not necessarily true. Based on opinions, beliefs, or biases: Often support erroneous ideas and may lack scientific basis.Humans use science as a systematic approach to understanding the natural world. Its goal is to eliminate prejudice by using facts and observations to identify and describe underlying concepts and mechanisms. Pseudoscience lacks scientific rigor and relies on unproven claims driven by prejudices or beliefs, resulting in misunderstandings.
The basis of real science is actual data collected by experiment, observation, and application of the scientific process. Myths are important cultural myths that may not reflect scientific reality. While myths have their roots in tradition, they should not be confused with facts verified by science. Unlike pseudoscience and myths, which lack evidence-based scrutiny, science provides a solid framework for unbiased observation and testing.
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The theory of evolution states: Question 5 options: better adapted organism reproduce at a higher rate organisms change by acquired characteristics organism populations can change physically over long periods of time modifications in an individual is caused by its environment none of the above
Answer:
The theory of evolution was proposed by Charles Darwin and was first formulated in his book, "Origin of Species" in 1859. It focuses on the changes in species and populations over time
by which large pieces of food are cut and crushed into
smaller pieces is called
a. emulsification b. chemical digestion
c. absorption de mechanical d
5. The tube that connects the mouth to the stomach is the
a. esophagus. b.epiglottis
c. peristalsis. d. pancreas.
5. The hard, outer coating of the tooth is called
a, a molar.
b. enamel.
c. an enzyme. d. dentin
- The building blocks of proteins are
a. enzymes. b. minerals,
c. amino acids, d. molecules
5. Which of the following vitamins is made by the body?
a. vitamin D- b. vitamin A c. vitamin C d. vitamin B
. Having too little of the mineral iron can cause
a. rickets.
b. goiter.
c. anemia d. beriberi.
The wavelike motion that moves food through the digestive tract is called
a. emulsification b. digestion. c. oxidation d. peristalsis.
. The enzyme that digests proteins is called
a. gastric juice. b. pepsin. c. chyme. d. lipase.
Food leaves the stomach in a thick, liquid form called
a. chyme. b. bile с. pepsin.
d. saliva
The movement of food molecules from the digestive system to the blood is called
a. emulsification. b. chemical digestion. c. absorption d. peristalsis.
Gastric juice contains all of the following except
a. hydrochloric acid
b. mucus c. pepsin
d. bile
The process by which large food molecules are broken down into smaller food
molecules is
a. chemical digestion. b. oxidation c. mechanical digestion d. absorption
d. mouth
Fats are digested in the
a. large intestine b. small intestine. c. stomach.
Poor nutrition caused by an unbalanced diet is called
a. rickets. b. anemia. c. malnutrition
d. goiter.
The fingerlike projections on the lining of the small intestine are called
h cilia
d. villi.
c. bile
Answer:
by which large pieces of food are cut and crushed into
by which large pieces of food are cut and crushed intosmaller pieces is called:
d. mechanical digestion
5. The tube that connects the mouth to the stomach is the:
a. oesophagus
5. The hard, outer coating of the tooth is called:
b. enamel
- The building blocks of proteins are:
c. amino acids
5. Which of the following vitamins is made by the body?
a. vitamin D- b. vitamin A c. vitamin C
. Having too little of the mineral iron can cause:
b. goitre
The wavelike motion that moves food through the digestive tract is called:
d. peristalsis
Gastric juice contains all of the following except:
d. bile
The process by which large food molecules are broken down into smaller food
The process by which large food molecules are broken down into smaller foodmolecules is:
c. mechanical digestion
Fats are digested in the:
b. small intestine
Poor nutrition caused by an unbalanced diet is called:
c. malnutrition
The fingerlike projections on the lining of the small intestine are called:
b. villi
[tex].[/tex]
Answer:
d. mechanical digestion
a. esophagus
b. enamel
c. amino acids
a. vitamin D
c. anemia
d. peristalsis
b. pepsin
a. chyme
c. absorption
b. mucus
a. chemical digestion
b. small intestine
c. malnutrition
b. villi
Not 100% sure on some of these but very positive on most of them :) Hope this helps.
Explanation:
Which area of the brain receives information collected from mechanoreceptors?
Pons
Olfactory lobe
Medulla
Somatosensory cortex
Answer:
I think, you answer is. somatosensory cortex.Explanation:
Hope it helps you.....Thank you..Somatosensory cortex area of the brain receives information collected from mechanoreceptors. Option D is correct.
The somatosensory cortex is a region of the brain that receives information collected from mechanoreceptors. Mechanoreceptors are sensory receptors that respond to mechanical stimuli, such as touch, pressure, and vibration. The somatosensory cortex is located in the parietal lobe of the brain, and it is divided into two parts: the primary somatosensory cortex and the secondary somatosensory cortex.
The primary somatosensory cortex receives information from the skin, muscles, and joints. The secondary somatosensory cortex integrates this information and allows us to perceive the location, intensity, and quality of touch. The pons is a region of the brainstem that is involved in the coordination of movement and the regulation of sleep. The olfactory lobe is a region of the brain that is involved in the sense of smell. The medulla is a region of the brainstem that is involved in the control of breathing, heart rate, and blood pressure. Option D is correct.
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Explain the importance of neem, turmeric and blue green algae in agriculture
Answer:
Blue green algae are used to prepare bio fertilizers .Neem leaves are used in grain storage as bio pesticides . Turmeric is used in grain storage as bio pesticides .Hope this helps.....
Pls mark my ans as brainliest
If u mark my ans as brainliest u will get 3 extra points
Answer:
The answer is
Explanation:
Blue green algae is used in farming.
Which state of water concentration is healthiest in an animal cell?
A. Isotonic
OB. Hypertonic
C. Equitonic
D. Hypotonic
Answer:
D. Hypotonic
Explanation:
Answer:
C. Isotonic
Explanation:
i took the quiz and its right
When CFCs are exposed to high levels of UV radiation, what occurs? A. The compound breaks down into nitric oxide and ozone. B. All of these C. A chlorine breaks off and forms a free radical. D. They become ionized and stick together in clumps that become part of smog.
Answer:
C. A chlorine breaks off and forms a free radical
Explanation:
When CFCs are exposed to high levels of UV radiation in the atmosphere, the CFC molecule breaks into chlorine and forms free radicals.
These free chlorine radicals then reacts with ozone molecules and breaks the ozone atom (O3) to form chlorine monoxide and oxygen (O2) molecule.
CFCs are main cause of ozone depletion in the atmosphere.
Hence, the correct option is "C".
Which of the following best descrites an example of how genetic codes of organisms have been used to help hierarchically classity living things?
A) The common nucleic acid sequences of polar bears and black bears can be
deduced from their classification in the same genus, Ursus. (WRONG)
B) Viruses contain DNA which is used to classity which hosts they will
infect into a Linnacan taxonomy of viruses.
C) Since kangaroos and opossums both have developed pouches to carry their young, it proves that they share DNA sequences and belong to the same
D) Even though Eubacteria and Archaebacteria look similar, differences in their ribosomal RNA led to their classification into different domains,
Answer:
Even though Eubacteria and Archaebacteria look similar, differences in their ribosomal RNA led to their classification into different domains.
Explanation:
took the test and got it correct
Even though Eubacteria and Archaebacteria look similar, differences in their ribosomal RNA led to their classification into different domains. The correct option is D.
What are Eubacteria?Eubacteria are bacterial counterparts. They go under the name "real bacteria." They lack membrane-bound cell organelles and a genuine nucleus. These are single-celled, tiny creatures.
Contrary to appearances, Eubacteria and Archaebacteria (also known as Archaea) are divided into distinct realms of life based on variations in their genetic make-up, particularly in the sequences of their ribosomal RNA (rRNA).
Together with Eukarya, Eubacteria and Archaebacteria are currently acknowledged as distinct domains of life.
This classification represents the underlying biological differences between the two categories, including variations in cell walls, lipid membranes, and metabolic pathways.
Thus, the correct option is D.
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Which timeline best shows the history of the development of cell theory?
Which organelle is most like a factory delivery driver?
lysosome
endoplasmic reticulum
cytoplasm
nucleus
Answer:
Cytoplasm
Explanation:
Hope it helps :)
Which of the following is NOT true of enzyme activity? a. enzyme shape may change during catalysis b. the active site on an enzyme orients its substrate molecules, therby promoting interaction of their reactive parts c. all enzymes have an active site where substrates are temporarily bound d. each enzyme can catalyze a wide variety of different reactions
Answer:
D. Each enzyme can catalyze a wide variety of different reactions
Explanation:
Each enzyme can only catalyze a few, specific types of reactions.
Since enzymes and substrates are very specific to one another, enzymes cannot catalyze a wide variety of reactions.
If a substrate is not the correct one that fits in the enzyme's active site, a reaction will not occur.
So, each enzyme can only assist in a few reactions.
The correct answer is D. Each enzyme can catalyze a wide variety of different reactions
What will happen if external factors affect cell division in a group of cells placed in a culture dish? A) Anchorage dependence will cause the cells to attach to each other after dividing. B) Anchorage dependence will prevent the cells from dividing until they attach to the dish. C) Density-dependent inhibition will cause the cells to divide until the dish is completely full. D) Density-dependent inhibition will destroy large cells to create room for new cells.
Answer:
C) density-dependent inhibition will cause the cells to divide until the dish is completely full
Explanation:
Just took the exam
Type your response in the box. Many countries have laws that regulate hunting, including restricting hunting to specific times of year. Why is this hunting restriction important for preserving certain animal populations?
Answer:
You can only hunt dear (example) for only sertin times of the year because when the doe's have their fans people want them to get big before they shoot them
Answer:
Animal populations can change from one season to another, so it’s important to restrict hunting to seasons when the population is high. Such a restriction helps prevent a severe drop in population, which could threaten the species. It’s also important to limit hunting during breeding seasons to increase the possibility of offspring reaching adulthood.
Explanation:
Plato.
Read each of the following statements. If it describes a process of reproduction, write yes.
If not, write no.
19. New leaves appear on a tree in spring.
20.
An amoeba divides in half.
21.
A bean plant produces seeds in long pods.
22.
Pollen grains are released from a flower.
23.
A sea star produces a new arm after losing one to a predator.
Answer:
New leaves appear on a tree in spring. - NO
An amoeba divides in half. - YES
A bean plant produces seeds in long pods. - YES
Pollen grains are released from a flower. - YES
A sea star produces a new arm after losing one to a predator. - NO
Explanation:
The appearance of new leaves has nothing to do with reproduction but rather regeneration.
An amoeba dividing in half is a form of reproduction known as asexual. Binary fission is a reproductive process in which an organism divides into two and each half develops into new independent organisms.
A bean plant producing seed is part of the reproductive process. After fertilization, the ovule of a flower becomes the seed. A seed in itself is a ripened fertilized ovule.
The release of pollen grains from the anther of a flower to the stigma of a compatible flower in the same or different individuals plants is known as pollination. Pollination is a reproductive process similar to fertilization.
A sea star producing a new arm after losing one to a predator is a regeneration process rather than a reproductive process.