In an experiment, 6,000 people with a common cold who drank orange juice daily had symptoms that lasted an average of 4 days. Another 6,000 people with a common cold who did not drink orange juice daily had symptoms that lasted an average of 7 days. Scientists repeated the experiment 3 times with the same results. They concluded that orange juice reduces the length of the common cold. Was this conclusion valid, and why?

Answers

Answer 1
Why you are so beautiful lady?

Related Questions

kinds of clothes we wear in summer and winter






Answers

Answer:

in summer we wear light coloures and mostly cotton clothes because we swear a lot and cotton is good absorber of water and light cloth so that it does not absorb more heat .

In winter we wear dark coloured and woolen othes to keep us warm the dark coloured clothes helps to absorb heat and keep us warm

Answer:

we wear clothes that cover our skin in winter and the reverse in summer

Explanation:

Can you help me i will give you a branlist

Answers

Answer:

it has one Valence electrons

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8

Muscle tissue is made up of specialized muscle cells. How are individual muscle cells different from the muscle tissue in the biceps

muscle?

Answers

Answer:

Please see below

Explanation:

The specialized muscle cells are skeletal muscle cells belonging to the striated muscle cell category. These are the muscles that are utilized for movement, and are organized into compartments of specific muscle tissues all over the body, including the biceps. Structures known as tendons are responsible for attaching skeletal muscles to bones, generally two to three cm long.

Answer:

Muscle cells are smaller than tissue cells

Explanation:

Cells are small and they are the simple stage.

Hope it helped

11. Which of the following is not part of the cell theory:
a. All cells come from an existing cell
b. All cells have a nucleus
c. A cell is able to perform all functions necessary to maintain life
d. All living organisms are made up by cells

Answers

The answer is C. A cell is able to perform all functions...

What is the independent variable?

Answers

Answer:

It is a variable that stands alone and isn't changed by the other variables.

Explanation:

For example; someone's age might be an independent variable. Other factors such as ( what the eat, where they go) aren't going to change a person's age.


How many amino acids must be obtained in the diet because they cannot be made by the body?

Answers

Answer:

10

Explanation:

There are 20 amino acids in the body and 10 have to be consumed because the body cannot produce them.

Look at the numbers used on the vertical axis. What
would happen to the bars on the graph if these numbers
were changed to 100, 150, 200, and 300?

Answers

Answer and Explanation: You will find the graph in the attached file

When changing the numbers in the vertical axis of the original graph, you will see that bars tend to get shorter than they originally were. This occurs because new numbers are much bigger than the original numbers, the proportion of the bars changes because they must represent the same information in a much bigger space. Offenlly, this is a tool very used by media to mark a tendency when informing something. So It is very important whenever looking at any graph to see what the axes are telling you because by the size of the bars you might infer something that might be different from what is really going on.                                    

Calculate the pI of Histidine (pKa’s = 2.3, 6.04, 9.33)
6.11
7.68
3.08
2.35
4.07

Answers

Answer:

The correct answer is 7.68

Explanation:

Isoelectric point (pI) is the pH at which the amino acid has net a charge of zero. We have to choose the two values of pKa at which the neutral form of the amino acid is predominant. Histidine (Hys) is a basic amino acid. From pKa's data, we deduce:

pKa1 = 2.3 (corresponds to α- carboxyl group)

pKa2= 6.04 (corresponds to R group)

pKa3= 9.33 (corresponds to α- amino group)

Since it is a basic amino acid, the neutral form will exist between the higher pKa's values. Thus, the pI will be in a pH value between 6.3 and 9.33.

So, we have to calculate the average of pKa2 and pKa3:

pI= (pKa2+pKa3)/2= (6.04+9.33)/2= 7.68

Therefore, the pI of Hys is 7.68.

what weather conditions could make trees grow more quickly than normal

Answers

Answer:

Explanation:

Water rain damp soil

(Psychology)
a chemoreceptor would allow you to
A.see something

B. Detect you friends features

C. Detect a smell

D. Analyze you environment

Answers

a chemoreceptor would allow you to detect a smell .

A person with a low number of white blood cells could have difficulty in fighting infections and A decrease in the number of lymphoid stem cells could result in a decrease in red blood cell.

What is nucleotide?

It is the sub units and buIlding blocks of DNA. It is made up of a five-sided sugar, phosphate group and then a nitrogen base.

These groups make the backbone of the DNA helix. If you look at a DNA helix, they make the side of the ladder or the side portion. They connect to a nitrogen base which make the steps of the ladder.  The type of sugar that is used in a DNA helix is called deoxyribose.

Nitrogen bases are the molecules that make up the steps of the ladders. There are four different nitrogen bases, namely; Guanine, Thymine,Adenine and Cytosine.

Pyrimidines are compounds that make a single 6-sided ring. Examples of pyrimidines are Cytosine and Thymine. Purines on the other hand make 5-sided and 6-sided rings.

Therefore, A person with a low number of white blood cells could have difficulty in fighting infections and A decrease in the number of lymphoid stem cells could result in a decrease in red blood cell.

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A controlled experiment is one in which

number 4

Answers

Answer: there are at least two groups, one of which does not receive the experimental treatment

Explanation:

A controlled experiment is where the variables are controlled do the scientist has a comparison of the control group to the experimental one

what would you would need in order to work in forensic science field (one to two sentences).

Answers

A forensic scientist must have a minimum of a bachelor’s degree. Although a degree in natural science or forensic science is recommended, some crime scene investigators begin as police officers and lean on their work experience to move into the investigator position. They might hold an associate degree or certificate.

what is field of biology

Answers

Answer:

Biology is the branch of science that deals with the study of living organisms and vital processes

Explanation:

Fields: Botany

Zoology

Ecology

Genetics

Physiology

Cytology

Evolution

Medicine

Evolution

Marine technology etc.......

mark me the brainlest

Biology is a branch of science that deals with living organisms and their vital processes. Biology encompasses diverse fields, including botany, conservation, ecology, evolution, genetics, marine biology, medicine, microbiology, molecular biology, physiology, and zoology.

How would you describe a bottle that contains 0.95 moles of hydrogen peroxide per liter of solution?

Answers

Answer:

A bottle that contains 0.95 moles of hydrogen peroxide per liter of solution contains 32.31 g of hydrogen peroxide per liter of the solution.

Explanation:

First, recall that:

Molarity of a substance = no of moles of the substance/volume of the solution in liters.

In this case, the number of moles of hydrogen peroxide is 0.95 mole while the volume of the solution is one liter. Thus;

Molarity of hydrogen peroxide = 0.95/1 = 0.95 M.

Also recall that:

no of moles of a substance = mass of the substance/molar mass of the substance.

Thus;

mass of substance = no of moles x molar mass.

In this case, the no of moles of hydrogen peroxide is 0.95 while the molar mass is 34.01 g/mol. Hence;

mass of hydrogen peroxide = 0.95 x 34.01 = 32.31 g

Hence, a bottle that contains 0.95 moles of hydrogen peroxide per liter of solution contains 32.31 g of hydrogen peroxide per liter of the solution. The solution also has a hydrogen peroxide molarity of 0.95 M.

The amount of hydrogen peroxide in the solution can be expressed in grams per Litre as 32.31 gram of hydrogen peroxide per Litre of the solution.

The amount of mole of hydrogen peroxide in the solution = 0.95 moles

The Molar mass of hydrogen peroxide = 34.0147 g/mol

The mass of hydrogen in the solution can be calculated thus :

Number of moles of hydrogen peroxide × Molar mass of hydrogen peroxide

Mass of hydrogen = 0.95 mol × 34.0147 g/mol = 32.314 g

Therefore, the bottle contains 31.314 g of hydrogen peroxide per Litre of the solution.

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What is the function of the structure identified by the red arrow? A) Mobility B) Protection C) Reproduction D) DNA Transfer

Answers

Answer:

a. mobility

Explanation:

PLEASE HELP I WILL GIVE YOU BRAINLIEST ANSWER The Phlogiston theory in the 17th century attempted to explain burning. The theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. After objects burned, the objects were dephlogistonated and were then in their true form. The Phlogiston theory was accepted until the 18th century, when Lavosier proved that combustion requires a gas that has mass. Phlogiston is evidence that A) scientific knowledge is exact. B) scientific knowledge can evolve. C) scientific knowledge is 100% proven. D) scientific knowledge does not evolve.

Answers

Answer:

B) scientific knowledge can evolve

Explanation:

I took the USA Test prep

Answer:

B

Explanation:

I got it right!

Which of the following environmental factors likely led to the exponential growth seen in fireweed after the Yellowstone wildfires? increase in habitat increase in predation from insects decrease in competition from other plants increase in sunlight increase in nutrients

Answers

Answer:

Decrease in competition from other plants.

Explanation:

Decrease in competition from other plants is the environmental factors likely leaf to the exponential growth seen in fireweed after the Yellowstone wildfires because decrease in population from other plants will lead to a particular species dorminating a particular geographical area and this dorminating species are Dorminant when competition has been reduced by wild fire and this will lead to exponential growth where the available resources will be abundance or unlimited or resources increases.

Which statement best explains how the needs of a unicellular organism are
met?
a) cell parts do everything
b) all cells must work together
c) most tissues work together
d) specialized cells work together

Answers

Answer:

a) cell parts do everything

Explanation:

Firstly, a unicellular organism is an organism with only one cell. This means that there would be no specialization or differentiation of cells. Also, this means that tissues, which Is the collection of similar cells, cannot be formed.

However, in its single cell, the unicellular organism will contain cell parts or organelles, which are organ-like structures that perform specific task in the cell. Therefore, cell parts in the single cell will do everything.

its A

i took the quiz

Based on the prefix the word biohazard means...?

Answers

Biohazard is a risk to human health or the environment arising from biological work, especially with microorganisms.
Bio means of life or a living thing
Hazard means danger or risk

Three of the adaptations would be very important to help a temperate forest plant disperse its population and spread out. One adaptation does not aid in population dispersal. That adapatation is A) runner roots that produce new plants by vegetative propagation. B) the use of large sugary fruits to attract animals. C) the presence of secondary xylem as wood tissue. D) the use of pollinating insects, such as bees.

Answers

Answer:

C: the presence of secondary  xylem as wood tissue

Explanation:

C: the presence of secondary xylem as wood tissue, this help the tree get harder and stronger but not with population and the spread.

How useful is the cell type in classifying organisms?​

Answers

Answer:

without cell type u cannot classifiy organisms

The cell type is extremely useful in the classification of organisms. This is because the cell type distinguishes the structural morphology and functional property of an organism with respect to its phenotypical features.

What is Cell type?

Cell type may be defined as a group of cells that possess a common transcriptomic signature and low variation in other phenotypes. Cell types are utilized in order to identify cells on the basis of their morphological or phenotypical features.

It is only the cell types that enable people to understand and estimate how a complex organism evolved from a simpler organism. It also allows us to understand and study on the basis of their features, similarities, dissimilarities, etc. among diverse organisms.

Cell types also provide us with a brief evolutionary history of the organisms and the other organisms that are closely associated with them.

Therefore, the cell type is extremely useful in the classification of organisms.

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Which statements describe constructive forces? Check all that apply. A volcano erupts. A river deposits gravel at a bend. Tree roots crack a boulder. A glacier carves rocks as it moves. Wind throws sand against a statue. Plate movement creates mountains.

Answers

Answer: a volcano erupts, a river deposits gravel at a bend , plate movement creates mountains

Explanation:

A statement describe constructive forces is a volcano erupts, a river deposits gravel at a bend , plate movement creates mountains.

What is constructive force?

Constructive force is defined as a method of raising or constructing the Earth's surface features. The planet undergoes constructive processes when events take place that improve or transform it. The procedure by which sand is dumped upon a river bank by the flowing water is an illustration of a constructive process. The river bank is raised as a result of this construction.

Mountains and land are formed throughout time by volcanic activity. inside a volcano, heated, molten rock. On the surface of the Earth, lava flows from the volcano. Igneous rock is created as it cools. The deformation of the crust, volcanic eruptions, and sediment deposition are three of the primary constructive factors. Crustal deformation is the alteration or deformation of the shape of the land. The shifting of the Earth's plates is one of the key causes.

Thus, a statement describe constructive forces is a volcano erupts, a river deposits gravel at a bend , plate movement creates mountains.

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3. What are bi-valve animals?

Answers

Answer:

Bivalvia, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. Wikipedia

Explanation:

The substances that are present after any chemical reaction are called

Answers

Answer:

Products

Explanation:

Answer:

Products

Explanation:

A collection of ideas and beliefs that sound like science but not supported by evidence, such as bigfoot, is known as...
theory
fact
pseudoscience
law

Answers

Answer:

pseudoscience

Explanation:

In nature, some ideas, beliefs or knowledge are mistaken to be scientific but in actual sense they are not supported by evidence using scientific method. These sorts of ideas are called PSEUDOSCIENCE. They do not follow the scientific method principles, hence, cannot be tested scientifically.

Pseudoscience is termed "fake science" as the name implies because they are brought forth as science in order to justify their claim but they are not in consistency with the scientific method. They lack the ability to be tested as false via experimentation. An example of pseudoscience as stated in the question is Bigfoot

A collection of ideas and beliefs that sound like science but are not supported by evidence, such as bigfoot, is known as - pseudoscience

Pseudoscience

These are the ideas or beliefs that appear to be the same as science are actually come with confirmation but are not supported by evidence whereas science is ideas that are based on pure evidence that can be challenged.

Pseudoscience is based on claims whereas science is based on facts and evidence. Theory, laws, and fact are part of science as these seek falsifications.

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6. Many of the people suffer from the problem of acnes and feel annoyed of the ugly skin texture caused due to the acne spots. Can you guess the microorganism causing these acne?

Answers

Answer:

Staphylococcus

someone please help me with this :,,,,,,,)

Answers

1.) A bluebarry has a greater density than a strawberry.
2.) The blueberries sunk while the strawberries float
3.) Blueberries carry a larger density than water
4.) Strawberries have less density than water

Streptomycin is an effective antibiotic because _____________.
a) it inhibits protein synthesis in prokaryotes
b) it does not affect eukaryotes
c) both
d) neither

Answers

Answer: Option C.

Both

Explanation:

Streptomycin is an antibiotics produced from bacteria and fungi and it is used to treat bacteria infections (prokaryotic ) such as tuberculosis, mycobacterium infection e.t.c.

It's inhibit protein function in prokaryotes because it's affects the function and performance of 70 s RIBOSOMES which is an organelles for protein production.

Streptomycin does not affect eukaryotes because it does not bind to the RIBOSOMES of eukaryotic cells which in turn does not affect protein production.

How is the transmission across the synapse controlled?

Answers

Answer:

Synapse are the transmitted by neurotransmitters from the axon terminal of the cell.

Explanation:

Synapse are the biological junctions neurons can be sent to the cell such as the muscle or glands and allow to form the nervous system.

Synapse they allow that nervous system to the control and connect body of the system they crucial biological computations.Synapse cleared the form one of the several potential and specific transporters on the terminate of neurotransmitter.Synapse was the introduced by the Sir Charles Scott in the 1897, synapse are the electrical and immunological.Synapse are the mostly refer to the chemical synapse, they are functional connections neurons and the cells.Synapse are generally to small by using the light microscope as the points to cell and their elements.Synapse pass that information to the direct cell and they structure and function, synapse region may be found the cell body.Synapse are the described as symmetric or asymmetric to the electron microscope,rounded to the cell and density.Synapse  that contains neurotransmitters in small bound as a number with other supporting structures.

How did Louis Pasteur's experiments lead to new scientific understandings of germs?
Experiments with cooking food showed that disease-carrying germs in food could be killed when heated.
Experiments with different magnification lenses showed that germs were real and could be observed.
O Experiments with animals showed that dominant genes could lead to risks of disease.
Experiments with shallow dishes showed that groups of germs could be grown so they could be seen without
microscopes

Answers

Answer:

The correct answer is : Experiments with cooking food showed that disease-carrying germs in food could be killed when heated.

Explanation:

Louis Pasteur's experiment with cooking shows that the microbes or germs that cause spoilage of food and disease after eating to an individual, could be killed by the heating process.

His experiment shows that microbes cause food and liquid spoilage which can be prevent by the process of the pasteurization or heating that kill such germs.

Thus, the correct answer is - Experiments with cooking food showed that disease-carrying germs in food could be killed when heated.

Answer: a

Explanation:

bc i took the test

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dishonest. (Choose the correctQ1: The old man as well as his sonsanswer)1. Owere2.was3. Ohave been4.Owill be If an element contains six electrons, how many will be placed in the second valence shell?A. 8B. 4C. 2D. 6 Which statement BEST describes an organ?the basic unit of all living things; a building blockthe smallest unit in a system that can function on its ownthe process in which tissues combineA group of tissues joined together to perform a specific function The town librarian bought a combination of new-release movies on DVD for $20 and classic movies on DVD for $8. Let x represent the number of new releases, and let y represent the number of classics. If the librarian had a budget of $500 and wanted to purchase as many DVDs as possible, which values of x and y could represent the number of new-release and classic movies bought? x = 8, y = 45 x = 10, y = 22 x = 16, y = 22 x = 18, y = 18 If R1 and R2 be the resistance of the filament of 40 W and 60 Wrespectively operating 220 V, thenR1 R2 R1 = R2R1 R2 "During this period, employees had more input into management decisions and how they performed their jobs. The use of groups and teams also became popular." To which of the following periods are these statements referring?A. The 1960s B. The 1990s C. The 1970s D. The 1980s Calculate Hrxn for the following reaction: 5C(s)+6H2(g)C5H12(l)5C(s)+6H2(g)C5H12(l) Use the following reactions and given H values: C5H12(l)+8O2(g) 5CO2(g)+6H2O(g) H= -3505.8 kJC(s)+O2(g)CO2(g) H= -393.5 kJ2H2(g)+O2(g) 2H2O(g) H= -483.5 kJ Marcus is on a train that travels 20 and takes 5 seconds to slow to 10 .How would Marcus correctly calculate the acceleration? Solve 10-5x+1=7x+11-12 What happens in a society that does not have the rule of law? 1. Has it been tested and observed numerous times by more thanone group of scientists? There have been many wars in Africa due to the fighting between the different_____.tribes governmentsimmigrants 2. The expression 35^2 is equivalent to the product of two perfect squares (each greater than 1). You can find the twoperfect squares by factoring 35^2.Write the perfect squares that have a product equivalent to 35^2. x=x^2 is the equation correct What happened in 1722 that finally gave the Ottomans political stability throughout their empire? the product of 8 and p Can someone pls help me? My English is not very good what is all the elements of art and principle of design? 15 less than a number y Determine whether the sequence is arithmetic, geometric or neither. Then, write a recursive rule and an explicit rule, if possible 0.25, 1.75, 3.75, 5.75, 7.75,