If potassium permanganate was placed in a solution of boiling water (100°C), would the rate of diffusion be greater than diffusion in cold water? Would diffusion of potassium permanganate in boiling water be greater than diffusion in warm water?
The rate of diffusion increases as temperature increases.Hence, the rate of diffusion will be the greatest in boiling water then warm water and cold water at last
The movement of molecules along a concentration gradient is known as diffusion. It is a significant process that all living things go through. Diffusion facilitates the flow of materials into and out of cells. Increased energy from higher temperatures causes the molecules to move more quickly, speeding up the diffusion process. Lower temperatures cause the molecules' energy to drop, which lowers the diffusion rate. The rate of diffusion increases with increasing concentration differences. The particles will move and mix more quickly at a greater temperature because they will have more kinetic energy.
Hence, the diffusion rate will be boiling water>warm water>cold water
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Consider the following hypothesis.
Hypothesis: The germination of radish seeds is affected by the chemistry of
the soil.
Which statement of purpose best defines the objective of an experiment to
test this hypothesis?
OA. To see if radishes will grow when radish seeds are planted in soil
and given water regularly for a month.
OB. To measure the rate at which radish seeds are eaten by crows.
OC. To compare the average size of radishes grown in Minnesota with
those grown in lowa.
OD. To determine the percentage of radish seeds that germinate in
soils of different chemistry.
Answer:
to determine the percentage of radish seeds that germinate in soils of different chemistry
Answer:
D
Explanation:
Which best explains why nanofiltration is an important new technology?
It can be used to help regions that have a short supply of usable water.
It can be used as an energy source to produce electricity in regions with limited coal.
It recycles wastewater to be reused for geothermal energy.
It collects solar energy to generate electrical power.
Answer:
It can be used to help regions that have a short supply of usable water.
Explanation:
Essentially, nanofiltration is purifying [often mineral-dense] water.
A . Choose the correct option.
1. Vaccine for smallpox is discovered by
a) Louis Pasteur
b) Alexander Fleming
c) Edward Jenner
d) John Mendal
2. Mushroom belongs to
a) Algae
b) Virus
c) Fungi
d) None of these
3. Malaria is caused by
a) Protozoa
b) Virus
c) Algae
d) Bacteria
4. Microorganisms are
a) Unicellular
b) Multi-cellular
c) Both
d) None of these
5. Penicillium is a
a) Algae
b) Fungus
c) Bacteria
d) Yeast
6. Rhizobium bacteria
a) Help in digestion
b) Help in nitrogen fixation
c) Cause diseases
d) All of the above
7. In order to take precautionary steps to control dengue, we must take measures to stop the breeding of
a) Aedes mosquito
b) Fleas
c) Fire ants
d) Anopheles mosquito
8. The bacterium present in curd is
a) Aspergillus
b) Lactobacillus
c) Penicillin
d) Vibrio cholera
9. While baking cakes, yeast reproduces rapidly and produces ___ gas.
a) Hydrogen
b) Oxygen
c) Carbon dioxide
d) Nitrogen
Which among the following statements is not associated with food preservation?
a) Prevention of decay or spoilage
b) Decreased shelf life
c) Air-tight sealing
d) Storage for future use
Answer:
2. fungi
4. none of these
5. bacteria
9.carbon dioxide
10. decreased shelf life
Explanation:
mushroom makes spores which only fungi make
food preservation implies making it last longer
if it was hydrogen or nitrogen the food would explode.
also I am sorry I
do not know all of these.
Biological systems examples that can be found during a nature walk, such as cellular respiration
Kiesha was up for a promotion at work but didn't get it. She believes her coworker Mark got the job because of his gender. Because Kiesha believes she was treated unfairly, her bloodstream likely contains high levels of
The belief of Kiesha is that she was treated unfairly, her bloodstream likely contains high levels of cortisol.
What is the function of Cortisol?Cortisol is an essential hormone that plays a major role in regulating the body's stress, controlling body fat, activating anti-inflammatory pathways, and functions significantly in metabolism.
The expectation of promotion but did not get it causes some anxiety, stress, and loss of interest to Kiesha. As a result of this, the stress regulating hormone cortisol increases in the bloodstream to control the significant effect of stress on the body.
Therefore, it is well described above.
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what are the major classes of lipids
Answer:
phospholipids, sterols, and triglycerides
Explanation:
Phospholipids make up the outermost layer of cells in the bodies of both animals and humans. They create a protective layer around the cells to help maintain them.
Sterols are a subset of steroids, a type of hormone.
Triglycerides are the fats and oils that you are familiar with in foods. This type of lipid can be saturated or unsaturated, which is part of what makes them solid or liquid, respectively, at room temperature.
Which of the following is most likely to happen if oxygen is not able to enter a cell?
The cell will not be able to produce energy
The cell will not be able to get rid of waste
The cell will not be replaced when damaged
The cell will not be able to split into daughter cells
Answer:
I think its "Cells will not be able to produce energy"
Match the following descriptions to the correct corresponding
stage of the cell cycle.
Mitosis
[Choose ]
Cytokinesis
[Choose ]
Synthesis
[Choose ]
Gap 1
[Choose ]
Gap 2
[Choose ]
Interphase
[Choose ]
Previous
The descriptions are not found here but mitosis is cell division, whereas cytokinesis is the division of the cytoplasm.
What is the cell cycle?The cell cycle is a series of steps that initiate with cell growth (G1) and ends with cell division (mitosis).
The cell cycle can be divided into interphase (G1, S and G2) and mitotic stage (cell division and cytokinesis).
The Synthesis (S) step can be defined as the interphase stage where DNA replication occurs.
Growth 1 (G1) and Growth 2 (G2) are fundamental stages where the cell prepares for its division by synthesizing key proteins required during mitosis.
Mitosis is the cell division process where duplicated genetic material (DNA) separate and two genetically identical new daughter cells form.
In conclusion, the descriptions are not found here but mitosis is cell division, whereas cytokinesis is the division of the cytoplasm.
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Freshwater fish are adapted to live in a hypotonic environment. What would happen to the cells of a freshwater fish if it was put into a hypertonic solution such as seawater? Why?
Answer:
they would burst
Explanation:
What is a dependent variable
Answer:
your mom mooching off of me
Explanation:
Two subgroups of a population separated by a river are rejoined when a drought causes the river to run dry. Assuming that speciation has not yet occurred, what is true about the two subgroups?
A. Speciation will speed up since there will be more competition
between the subgroups.
B. The likelihood that speciation will be completed will decrease.
C. The two subgroups will still be reproductively isolated and unable
to mate.
D. New traits that resulted from mutation will not flow between the
subgroups.
When separated subgroups of a population are rejoined due to drought, increased gene flow reduces reproductive isolation and lowers the likelihood of speciation. The correct answer to the question is B.
When two subgroups of a population are separated by a geographic barrier, such as a river, reproductive isolation occurs, which can lead to speciation over time. However, when a drought causes the river to run dry and the subgroups are rejoined, gene flow between the subgroups increases. This increased gene flow can reduce reproductive isolation and decrease the likelihood of speciation. Therefore, option B is correct. Option A is incorrect because increased competition between the subgroups does not necessarily speed up speciation. Option C is incorrect because when the subgroups are rejoined, they can interbreed and are no longer reproductively isolated. Option D is also incorrect because traits resulting from mutation can flow between the subgroups due to increased gene flow.For more questions on drought
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I had this question for SBI4U
Answer:
h+ is the part of the rocket that goes and blasts off.
Are any factors in the equation of photosynthesis more critical for plants that live on land than for plants that live underwater?
The most critical factor during photosynthesis of land plants compared to aquatic plants is water.
What is Photosynthesis?Photosynthesis is a series of chemical reactions by which plants need water, carbon dioxide and sunlight to produce carbohydrates.
In aquatic plants, water requirements are well satisfied, but it may not occur in land plants.
In conclusion, the most critical factor during photosynthesis of land plants compared to aquatic plants is water.
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Which of these is not a myth about globalization according to Lucas.
Group of answer choices
Policy – not trade or technology – is most responsible for inequality
Income doesn’t trickle down
Globalization has led to a decrease in global income inequality, not a reduction
Globalization has led to a decrease in global income inequality, not a reduction. Thus, the correct option is D.
First, there is evidence to suggest that globalization reduces inequality. Second, the wealthy will experience substantial income growth, which will increase the incomes of the lowest. Third, renouncing trade and technology is the only solution to the problem of rising inequality.
What is globalization?The spread of the flow of financial products, goods, technology, information, and jobs across national borders and cultural boundaries is referred to as globalization.
These beliefs are debunked by the recently published World Inequality Report, the first research study to in-depth analyze changes in wealth and income inequality across rich and developing countries over the past 40 years.
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What is the independent, dependent, and controlled variable in this experiment if you only drop water onto the penny? Experiment: How many drops of water can a penny hold?
0 because its a penny
Explanation:
2. Music stores arrange CD's according to the type of music - rock, country, folk, and so
on. This is an example of
a. Observation
b. Posing questions
c. Inferencing
d. Classifying
If a corn plant has a genotype SsTt, what are the possible genetic combinations that could be present in a single grain of pollen produced by the plant?
O St. sT
© Ss. Tt, ST, st
O ST, st
© ST, ST, St, st
The maize plant possesses the SsTt genotype.
The F1 generation will produce the children depicted in the punnet square after they are crossed.
What is pollen grain?A seed plant's pollen is a collection of microspores that typically takes the form of a fine dust. Each pollen grain is a tiny body with a unique shape and structure that develops in seed-bearing plants' male structures before being carried by a variety of agents (such as wind, water, insects, etc.) to the female structures, where fertilization takes place.
The genotype in question is a mono-hybrid heterozygous characteristic.
The pollen grains having a genetic combination like ST, St, sT, and st as depicted in the image will result from a cross between the two genotypes.
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the picture has the question in it
The sequence of passage of air during inhalation:
pharynx
larynx
trachea
bronchi
alveoli
(there are actually a few more steps to this question, but these are what the question lists)
hope this helps!!
The Cell Theory applies to what kind of cells?
A. ONLY cells with cell walls
B. ALL cells
C. ONLY plant cells
Answer:
B all cells
Explanation:
b all cells
cell theory applies to all living cells in the world
According to the CDC, what is the definition of sanitizing?
Answer:
Cleaning or disinfecting surfaces or objects to lower the risk of spreading infection
Explanation:
Sanitizing lowers the number of germs on surfaces or objects to a safe level, as judged by public health standards or requirements. This process works by either cleaning or disinfecting surfaces or objects to lower the risk of spreading infection.
Give three evidences from the Genesis account that the Flood was universal.
Peptic ulcers are caused by damage to the wall of the stomach by the acids that help digest food.
This can be caused by the failure of
A. tight junctions
B. adhering junctions
C. gap junctions
D. plasmodesmata
E. adhering and gap junctions
Peptic ulcer disease can be caused by the failure of tight junctions. Thus, the correct option is A.
What is Peptic ulcer disease?Peptic ulcer disease may be defined as a circumstance in which bitter and painful sores or ulcers evolve in the lining of the stomach or the first part of the small intestine which is the duodenum.
A tight junction is responsible for lining the wall of the intestine or stomach. It helps in the prevention of the passage of digestive enzymes through the space between adjacent locations inside the stomach or small intestine.
If this junction breaches, it results in damage to the wall of the stomach by the acids that help digest food and causes the peptic ulcer disease which is infected by a bacterial organism known as Helicobacter pyroli.
Therefore, it is well described above.
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what is the answer to this question?? an object has a mass of 5g. what force is needed to accelerate it at 6 m/s2?
a. 0.83 N
b. 1.2 N
c. 11 N
d. 30 N
Which vitamins are found in the maximum quantity in these foods, and how do they help us?
A. Oranges B. Carrots
Answer:
Carrot
Explanation:
Orange has more Vitamin C, however Carrot has more Vitamin A RAE, Vitamin K, Vitamin B6, and Manganese.
Daily need coverage for Vitamin A RAE from Carrot is 92% higher.
Carrot has 9 times less Vitamin C than Orange. Orange has 53.2mg of Vitamin C, while Carrot has 5.9mg.
Carrot is lower in Sugar.
What is the function of the labeled structures?
A:
B:
C:
deliveres information to the next cell
carries information away from the body cell
receivces information
Answer:
its d come on now
Explanation:
A.The functions of dendrites are to transfer the received information to the soma of the neuron through the nervous systems.
B. This myelin sheath allows electrical impulses to transmit quickly and efficiently along the nerve cells.
C.transmission of impulses from one neuron to another across synapses with the help of neurotransmitters
look at photo or pdf down there please
Answer:
Pituitary: part of the brain that helps to regulate the endocrine system
thyroid: regulates metabolism
thymus: helps children develop a strong immune
hypothalamus: regulates growth, water balance, and blood pressure
Explanation:
Answer:
Pituitary: part of the brain that helps to regulate the endocrine system
thyroid: regulates metabolism
thymus: helps children develop a strong immune
hypothalamus: regulates growth, water balance, and blood pressure
Explanation:
I copied and pasted the other person answer so you can give him brainlest
Just click the crown on his answer
a small polar molecule enters a cell with help from a membrane protein. No addistional energy is needed to complete this process. What type of transport is this
Facilitated diffusion. Facilitated diffusion is a form of passive transport across the plasma membrane (therefore needs no external energy source), that allows polar or larger molecules that usually couldn't diffuse across the membrane to do so.
The farmers shows the position of at different farm and concentration of nitrate at different points in ariver
The farmers shows the position of at different farm and concentration of nitrate at different points in ariver this shows that nitrates ha different concentration taht has a bad effect.
What impact does nitrate have on rivers?Nitrates in extra can purpose eutrophication in downstream coastal waters with the aid of using stimulating immoderate boom of algae and different aquatic plants (whilst nitrogen is the proscribing component for boom) and in a roundabout way inflicting oxygen deficiency withinside the backside waters and decreased biodiversity.
The nitrate attention is calculated with the aid of using subtracting the absorbance at 275nm from the absorbance at 220nm after which evaluating the corrected absorbance to a calibration curve advanced the use of requirements of acknowledged nitrate attention (APHA, 2005).
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a carbohydrate 7 monomers long has how many glycosidic bonds?
A. 1
B. 2
C. 3
D. 4
E. 7
Answer:
b. 2 is the answer to ur question
