You design an experiment to test the hypothesis that consuming caffeine increases a person's chances of developing a headache. Participants in the experimental group will be told to drink 8 ounces of caffeinated soda in the morning once a day for 10 days, and to abstain from drinking any other caffeinated beverages or soda. Which of the following is an appropriate control group for your experiment?
a) A group that drinks 8 ounces of decaffeinated hot coffee (no caffeine) in the morning once a day for 10 days and abstains from drinking any other caffeinated beverages or soda
b) A group that drinks 8 ounces of caffeinated soda once a day for 10 days in addition to their normal beverage habits
c) A group that drinks 8 ounces of decaffeinated soda (no caffeine) in the morning once a day for 10 days and abstains from drinking any other O caffeinated beverages or soda.
d) A group that does not drink soda (caffeinated or decaffeinated) or other caffeinated beverages for 10 days

Answers

Answer 1

Answer:

d) A group that does not drink soda (caffeinated or decaffeinated) or other caffeinated beverages for 10 days

Explanation:

In an experiment, two groups exist as follows: experimental group and control group. Experimental group is the group that receives the experimental treatment (independent variable) while the CONTROL GROUP is the group that does not receive the experimental treatment.

In this experiment, the experimental treatment is the CAFFEINATED SODA (contains caffeine). Hence, the appropriate control group for this experiment will be the group that does not drink any soda (whether caffeinated or decaffeinated) or other caffeinated beverages for 10 days.


Related Questions

HELP PLEASE ASAP.
Why do stems have bark? What does the phloem do?

Answers

Answer:In old stems the epidermal layer, cortex, and primary phloem become separated from the inner tissues by thicker formations of cork. Due to the thickening cork layer these cells die because they do not receive water and nutrients. This dead layer is the rough corky bark that forms around tree trunks and other stems.

Explanation: wikipedia.

The process of water moving from the Earth to the atmosphere and back again is called the

A. Earth cycle
B. Atmosphere cycle
C. life cycle
D. water cycle

Answers

water cycle i do believe so D

in which of the glands are ducts located between lobules.

Answers

Answer:

Interlobular -- Located between lobules, within the thin connective tissue septa that separate lobules. All interlobular ducts are excretory.

Which of the following was NOT one of Darwin's
arguments for his theory of natural selection?

A) There is variation among individuals in a
population

B) Much variation is heritable

C) Populations possess an enormous reproductive
potential

D) Resources are abundant

E) Population sizes remain stable

Answers

Answer:

option D) resources are abundant.

Explanation:

according to Darwin resources are small. individuals of a population compete for these resources.

Answer 8-9 please.................. And 13

Answers

Answer:

1. A

2. C

3. C

Second page:

1. A

2. C

3. D

Explanation:

What do all members of the swine species always have in common?

They always occupy the same position in the food web no matter where they live.

They are always preyed upon by the same predators.

They always occupy the same habitat at the same time.

They always have the same number and kinds of chromosomes.

Answers

Answer:

The members of the swine species always have the same number and kinds of chromosomes.

Answer:

d

Explanation:

i took the test

What type of cell is not differentiated

Answers

Progenitor Cell does not differentiate. It’s an UNdifferentiate cell.
Answer: progenitor cell :) hope this helps

Which of the following is true about budding? Check all that apply, *
- The offspring usually breaks away from the parent.
- Happens only in multicellular organisms.
- The offspring is genetically identical to the parent.
- Happens only in unicellular organisms.
- The offspring is not genetically identical to the parent.
- Happens in multicellular and unicellular organisms.

Answers

Answer:

1,3,4

Explanation:

They are all correct because of what they say

8. Genes are sorted and recombined to produce gametes. Which statement describes a possible result of this process?

A. Gametes always form with genetic material identical to the parent

B.Gametes are formed with the same number of chromosomes as the parent cells

C.Offspring display half of their traits from their mother and half of their traits from their father

D.Offspring have traits not displayed by either parent​

Answers

Answer:

c option is correct.

Explanation:

gametes are produced by meiosis during which genes get crossed in a process of crossing over ad new recombinent characters are produces. these gametes fertilized and offsprigs have multiple characters they get from their mother and faaher. so offsprimgs have characters half from mother and other half from father.

Genes often produce gametes. The statement that describes a possible result of this process is that Offspring display half of their traits from their mother and half of their traits from their father.

What is genes and gametes?

A gene is known to be the molecular unit of heredity of all  living beings.

A gamete is known to be a cell that comes together with another cell during fertilization that takes place in organisms that reproduce and this is a product of the male and the female gamete.

Learn more about genes from

https://brainly.com/question/1480756

Scientists have discovered convection
currents inside Earth. Explain how these
convection currents move and what layer(s)
they occur in.

Answers

Answer:

The convection currents move in a slow churning motion

Explanation:

This movement happen in the mantle which includes the lithosphere, the Asthenosphere, and the mesosphere

please help a girl out with these 2 questions thanks lol

Answers

Answer: first photo in my opinion would be d or c, but mostly d!

2nd photo would be either a!

hope i helped!



3. What does the salt do?
4. What was the purpose of cooling the mixture?
5. What does the cold ethanol do?
6. Why can't we use room temperature ethanol?
7. Why are strawberries classified as octoploids?

Answers

Answer:

3.You might think this should mean you need to cut out salt completely, but salt is actually an important nutrient for the human body. Your body uses salt to balance fluids in the blood and maintain healthy blood pressure, and it is also essential for nerve and muscle function.

4.Cooling the mixture is to prevent the DNA from being degraded by the heating.

5.The ethanol pulls water from the DNA molecule so that it then collapses in on itself and precipitates. The DNA will become visible as white mucous strands that can be spooled with the wooden applicator stick.

6.The colder the ethanol is the greater the amount of DNA that is precipitated. (You could try having some of the students use room temperature ethanol and see if the amount of DNA they can spool is the same or less than that for the groups using the ice-cold ethanol.

7.The reason is every strawberry seed contains different genetic material, the product of a myriad of potential gene combinations. Because the genetics of strawberries are so diverse (humans are diploid, strawberries are octoploid)

Explanation:

sharing is caring

follow me

help help help !!!!,

Answers

Answer:

#1= d #2=c

Explanation:

Sorry If incorrect

Answer: 1st one: b or d,

2nd: c

Explanation:

Two organisms within the same family can be organized into several related

orders


kingdoms

phylum

genus

Answers

Answer:

Phylum and Kingdoms

Hopefully this is right.



Answer and I will give you brainiliest

**Please only surely answer**​

Answers

Bones in the inner ear

The hair cells are located in the cochlea which is situated in the temporal bone

Answer:

Semicircular canals

Your welcome!!

Which of the following reasons for studying botany is most directly related to increased profits?
O Studying botany helps companies develop more abundant food crops for less investment.
O Studying botany can help us keep our forests healthy.
O Studying botany provides a chance to go on to graduate school.
O Studying botany tells us more about our place in nature.

Answers

Answer: Studying botany helps companies develop more abundant food crops for less investment

Explanation:

The reasons for studying botany that is most directly related to increased profits was that "Studying botany helps companies develop more abundant food crops for less investment".

Since more food crops are gotten for less investment, it ultimately means that there'll be a reduction in the cost which will hence lead to an increase in revenue and therefore there'll be an increase in profit.

The energy that fuels food webs begins as light energy from the sun. True or False

Answers

Answer: i think its true. ( based of information i got)

Explanation: The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs. also A food web consists of many food chains. A food chain only follows just one path as animals find food. eg: A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper, which has eaten grass. A food web shows the many different paths plants and animals are connected.

sorry if this was not what u were looking for or this is incorrect!:( have an nice day! UwU

♡ The Question ♡

-The energy that fuels food webs begins as light energy from the sun. True or False?

* ୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*

♡ The Answer ♡

-True!

*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*

♡ The Explanation/Step-By-Step ♡

-No Explanation/Step-By-Step provided!

*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*

♡ Tips ♡

-No tips provided!

Explain how you found out that Lucy has ADA-SCID

Answers

Answer:

The first part of finding out Lucy having ADA-SCID was when I realized there were no HIV proteins in her blood, getting rid of the possibility of her having HIV. Then, I realized she had a high number of Deoxyadenosine in her blood. This proves she has ADA-SCID because when the ADA doesn't work you find excess amounts of Deoxyadenosine in the blood.

Explanation:

Answer:

The first part in finding out Lucy has ADA-SCID was when I realized there was no HIV proteins in her blood, which got rid of the possibility of her having HIV. Then, I saw that she had a high number of Deoxyadenosine in her blood. This proves to me that she has ADA-SCID because when the ADA doesn't work you find excess amounts of Deoxyadenosine in the blood. This is the answer.

Explanation:

Which part of a plant is the least complex

Answers

Answer:

Cells are the least complex part of a plant :>

Explanation:

What is Adhesion

A. The ability of molecules to stick to molecules that are the same

B. The ability of molecules to stick to any molecules

C. The ability of molecules to not be able to stick to any molecules

D. The ability of molecules to stick to different molecules

Answers

Answer:

D. The ability of molecules to stick to different molecules

Explanation:

Help witg number 7
Please its esay

Answers

A . Stratosphere I believe

Which statement is true about the products of cellular respiration?

They contain oxygen.
They contain glucose.
They become the products of photosynthesis.
They become the reactants of photosynthesis.

Answers

Answer:

They become the reactants of photosynthesis.

Explanation:

Answer:

They become the reactants of photosynthesis.

Explanation:

Give the other person brainliest

Two Drosophila with genotypes AABBCC and aabbcc are crossed to produce a heterozygous offspring, AaBbCc (the gene order is unknown). This AaBbCc Drosophila is crossed with an aabbcc Drosophila, resulting in the offspring below: Number: Phenotype: 600 ABC and abc 200 AbC and aBc 150 ABc and abC 50 Abc and aBC a. Which phenotype represents the double crossovers

Answers

Answer:

The double recombinant individuals are less frequent ---> Abc and aBC

Explanation:

We can know if genes are linked, by looking at the progeny distribution. In a tri-hybrid cross, If individuals, whose genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1:1:1:1:1. If we observe a different distribution, meaning that phenotypes appear in different proportions, we can assume that genes are linked in the heterozygote parent.

We can recognize the parental gametes because their phenotypes are the most frequent in the descendants, while the double recombinants are the less frequent. Finally, the simple recombinant gametes are the ones with intermediate phenotypes frequencies.  

In the present example, the phenotypic ratio shows different proportions than the expected ones if they were not linked.

We can recognize the parental gametes in the descendants because their phenotypes are the most frequent,

ABC and abc   600    

while the double recombinants are less frequent.

Abc and aBC  50  

And simple recombinant gametes produced by the cross, which frequencies are intermediate.  

AbC and aBc 200 ABc and abC 150

a. Which phenotype represents the double crossovers

The double recombinants are less frequent ---> Abc and aBC

 

If false, please make it a correct statement. A rancher uses a particular chicken for breeding purposes because, on average, she observed that the chicken laid more eggs than other chickens. The rancher selecting the desirable trait would be considered an example of natural selection.
a) true
b) false

Answers

Answer:

b) false

Explanation:

The given statement is false. the selection process used by the rancher is an example of artificial selection and not natural selection.

Artificial selection is defined as the selection process done by humans on the basis of desirable characters while in natural selection the selection is based on the  adaptive characteristics of animals. In the given example rancher choses a desirable character of chicken that lays more eggs.

Hence, the given statement is "false".

please help find RNA code from DNA code

Answers

Answer:

her rna code would be.... AUG GGC UAC

Explanation:

i took this class last year and i always has an A+ in that class

Describe the function of. Endoplasmic reticulum

Answers

The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function. The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins.

Double stranded is a characteristic of

1. DNA
2. RNA
3. Both DNA and RNA
4. Neither

Answers

The answer to this question is 1.DNA because RNA is single stranded.
The answer is DNA because DNA is a double helix and RNA isn’t.

Please help fasttttt!!!!!
7 Identify What type of eclipse is shown in
the diagram?

Answers

Answer:

I dont know

Explanation:

I need points :)

Solar eclipse is the one shown in the diagram

What is the role of a ribosome in protein production?

A. It is the site where amino acids join to tRNA molecules.
B. It is the site where mRNA codons and tRNA anticodons meet.
C. It is the site where a protein strand is folded into its correct shape.
D. It is the site where proteins are packaged and sent where they are needed.

Answers

Answer:

Ribosomes are the sites in a cell in which protein synthesis takes place. ... Within the ribosome, the rRNA molecules direct the catalytic steps of protein synthesis — the stitching together of amino acids to make a protein molecule. In fact, rRNA is sometimes called a ribozyme or catalytic RNA to reflect this function.

3. Which of these methods uses rock layer and bones to support the
theory of evolution? *
20 points
a. Embryology
b. Biogeography
c. Molecular biology
d. Fossil record

Answers

Answer:

D fossil record

Explanation:

Depending on what layer of earth the fossil was recorded then they could determine a rough date. Then they would use carbon dating to be more exact.

Answer: B.

Explanation: well, I'm just thinking it is?

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