06

Some students investigated the effect of drinking caffeine on reaction time.

They used a drink containing 32. 25 mg of caffeine per 100 cm

This is the method used.

1. Divide the students into four groups, A, B, C and D.

2. Measure and record the reaction time of each student using the ruler-drop test.

3. Students in:

• group A drink 200 cm of water

• group B drink 200 cm of the caffeine drink

• group C drink 400 cm of the caffeine drink

• group D drink 600 cm of the caffeine drink.

4. Repeat step 2 after 15 minutes.

0

6

1

Describe how to do the ruler-drop test.

[3 marks]

Answers

Answer 1

Answer:

I would say b let me know if I was wrong sorry


Related Questions

What percentage of household trash can be recycled?.

Answers

Answer:The EPA estimates that 75% of the American waste stream is recyclable, but we only recycle about 30% of it.

Explanation:edg2022

Which study type of natural selection did grants observe when studying the beak size of galápagos finches

Answers

Grants study the type of natural selection on break size of Galapagos finches.

Grant study on Galapagos?

Peter Grant and Rosemary Grant studied Darwin's finches. They observed evolution by natural selection on Galapagos finches which occured during drought . Birds with bigger beaks tend to survived and reproduced because they adapt well and can eat different types of seeds at all sizes of seeds, whereas small-beaked birds could only eat small seeds. while birds with smaller beaks could not survive well.

Therefore, Grants study the type of natural selection on break size of Galapagos finches.

Learn more about Grant study on Galapagos finches below.

https://brainly.com/question/2929876

Which of the following abiotic factors are used to
define terrestrial biomes?
Select one:
a. vegetation only
b. rainfall and temperature
c. altitude and rainfall
d. altitude and temperature
e. altitude and vegetation

Answers

Answer:

I believe the answer is B. Rainfall and tempature.

Explanation:

They are both main factors or terrestrial biomes.

what test can determine if a person has hiv or tell how much a virus is present in the blood

Answers

Answer:

Yes, tests like urine and blood tests.

Explanation:

Make me brainiest.

1. Which statement shows the direction of the transfer of heat in this experiment?
The heat transfer is from the
v to the
2. Which statement compares the temperatures of the white and 1, black sheets at 1, 2, and 3 minute(s)?
The temperature
3. What conclusion can be made based on this data?
D intro

Answers

Answer:
Light bulb to Paper

Is higher for the black paper

The white paper absorbs less heat

Explanation:

Took on edge, hope this helps!

Answer:

1. Which statement shows the direction of the transfer of heat in this experiment?The heat transfer is from the light bulb to the paper 2. Which statement compares the temperatures of the white and black sheets at 1, 2, and 3 minute(s)?The temperature is higher for the black paper. 3. What conclusion can be made based on this data?The white paper absorbs less heat.

verse of the day! Jesus replied,"Very truly I tell you, kingdom of God no one can see the unless they are born again. John 3:3 have a blessed day!

Which does NOT cause an increase in carbon dioxide in the atmosphere 2b
O burning fossil fuels
O deforestation
O driving more cars
O using solar energy to heat a home

DO NOT ANSWER IF YOU DONT KNOW THE ANSWER THANKS!

Answers

Answer:

O deforestation

Ex: an increase in the carbon dioxide content in the atmosphere it will not cause the abundance of the desert plants right

What is the link between nutrition and disease?​

Answers

Answer:

Nutrition and infectious diseases are related to each other in some aspects. First, nutrition affects the development of human body immune system. Moreover, nutrition can influence emerge of infectious diseases (e.g., gastrointestinal infections), food poisoning, intestinal diseases, and systemic infectious diseases

Which organism in this food web would you expect to have the greatest amount of biomass if a biomass pyramid was created for this ecosystem?

Answers

The organisms at the base of the pyramid tend to have a greater biomass than those at the top of the pyramid.

What is a food web?

The term foodweb is a term that can be used to describe all the possible feeding relationships in the ecosysetm. We knwo that energy is lost further along in the web.

Hence, the organisms at the base of the pyramid tend to have a greater biomass than those at the top of the pyramid.

Learn more about food web: https://brainly.com/question/2233704

#SPJ4

Select the correct answer.
Which statement about somatic mutations is true?
A.
They exist in all the cells of the body.
B.
They are acquired through exposure to mutagens.
C.
They are inherited via sperm and egg cells.
D.
They are passed on to offspring.

Answers

the answer to your question is C

Different forms of a gene that occur at the same locus

Answers

Answer:

The answer is ALLELES.

Explanation:

Different forms of a gene that occur at the same locus is ALLELES.

How is it that some people have different DNA than others? What exactly about what the DNA is different?

Answers

Diversity in DNA is produced with the help of three processes: crossing over, random fertilization and independent assortment. What’s different about the DNA is that everyone has a unique sequence of base pairs (nucleotides) in each strand of DNA. Hope this helps!

The ________ nervous system is composed of the brain and spinal cord.

Answers

Answer:

The central nervous system is composed of the brain and spinal cord.

What factors led to the commercial extinction of northern cod? (site 1)

Answers

Answer:

The factors that led to the commercial extinction of the northern cod is countries had set quotas, they set them as high as possible to protect their economies

Explanation:

The Brazilian Pepper plant was brought to Florida for decorating the yards of homes, but it has spread to Florida's wilderness.

Sea otters are found primarily off the coast of California. They are one of the main predators of sea
urchins, Sea urchins feed on the roots of kelp beds, effectively killing large areas of kelp. Kelp beds
are important because they provide a safe location for several species of fish to spawn and hatch
their offspring. Data suggests that sea otters are a keystone species in their ecosystem.
What will most likely happen to this ecosystem if sea otters are permanently removed?
ОА.
OB.
Other species will evolve the ability to eat sea urchins, keeping the urchin population
under control.
The sea urchin population will rapidly increase, resulting in less kelp and a decrease
in biodiversity.
Sea urchins will assume the role of keystone species, allowing the ecosystem to remain
balanced,
OC.
Fish that reproduce in kelp beds will adapt to living in open water, becoming the primary
producers in the area.

Answers

Answer:B The sea urchin population will rapidly increase, resulting in less kelp and a decrease

Explanation:I researched it .

are butterflys made up of one or more cells

Answers

Answer:

There made up of multiple cells

Explanation:

Answer:

the monarch butterfly has eukaryotic cells.

Explanation:

During the end Permian mass extinction, the die-offs were so extensive, __________ or more of animal species went extinct.

Answers

During the Permian mass extinction more than 80% of the global animal species went extinct.

What was the Permian mass extinction?

This was one of the many mass extinction events that occurred during the Earth's history. Mass extinction events are global die-off's of animal species. Throughout history, these have been caused by many factors, but often include a sharp change in global weather conditions. The Permian mass extinction killed of 95% of all land species and 70% of all marine life, averaging around 80% in total species.

Therefore, we can confirm that during the Permian mass extinction more than 80% of the global animal species went extinct.

To learn more about extinction visit:

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Explain how the body receives and circulates oxygen. Identify one disease process that interrupts this exchange or circulation of oxygen

Answers

From the nose or the mouth:

Explanation:

When scientists replace a gene (DNA) from one species with the same gene (DNA) from a different species, the same amino acids will be produced. This happens because

a) all organisms have nucleic acids, so they all produce amino acids
b) all organisms have DNA, so they produce the same biological molecules
c) organisms use DNA to replicate, and RNA to store the genetic information
d) all organisms share a common ancestor, so thier genetic code is universal

Answers

it has to be "d"

Explanation:

Describe how urine is formed.

PLS HELP ILL GIVE BRAINLIEST!
I NEED HELP ASAP!!!!

Answers

Urine is made out of liquid that is no longer needed in the body system, containing urea, creatinine, ammonia and uric acid

Answer:

The nephrons of the kidneys process blood and create urine through a process of filtration, reabsorption, and secretion.


Explain why the coyote is considered a limiting
factor in the Adirondack Mountains.

Answers

Answer:

The coyote eats the beaver, deer, and moose so the coyote limits the number of prey.

The wrasse, a small marine fish, periodically cleans harmful parasites from the
mouth and body of the moray eel. The moray, in turn, protects the wrasse from
larger predators and provides it with a constant supply of food. This is an
example of the type of relationship known as

Answers

This is an example of the type of relationship known as mutualism.

Feeding relationship between organisms

There exists various types of feeding relationships among living organisms which include:

competition,

predation,

commensalism,

mutualism and

parasitism.

Mutualism is the type of feeding relationship whereby two organisms of different species work together in such a way that both benefits from each other.

Thus, the wrasse removes harmful parasites from the moray eel while the moray eel in turn protects the wrasse from predators.

Learn more about mutualism here:

https://brainly.com/question/2752810

Humans have used fossil fuels at a level in which they cannot be renewed. which list includes only fossil fuels? wood, natural gas, and coal natural gas, coal, and oil wood, natural gas, and solar coal, oil, and solar

Answers

Answer:

coal,oil, natural gas

Explanation:

Search up it

Humans convert ammonia to the water soluble compound urea. True O False​

Answers

the answer to this is true

People use salt to remove the leech from the body parts during monsoon. The above phenomenon explains

A. De-plasmolysis
B. Plasmolysis
C. Flaccidity
D. Turgidity

Answers

The answer is B. Plasmolysis

4. historical Method
a highly developed society
5. anthropology
a document produced some time after the historical event
6. primary Source
a document that was produced during the same time period as the historical event
7. secondary Source
collecting, classifying, analyzing, and interpreting data

Answers

Answer:

Anthropology is the study of humans; Culture is all the knowledge and values shared by society; Society is a group of people with common practices, activities, and interests; Primary source is a document produced during the same time period as the historical event; Secondary Source is a document produced after the historical event; Civilization is a highly developed society; Historical Method is collecting, classifying, analyzing, and interpreting data

Explanation:

Why is forensic anthropology an important part of forensic science? What does this area add to the investigation of crime?

Answers

This part is very important for forensic science

Suppose a criminal killed someone with knife.The only way to identify the criminal if CCTV is broken is by his finger print on knife.Forensic anthropology helps in identifying the criminals crime prints .

Answer:

It is important because it is a special field of forensic science where the bones of a victim are further analyzed.

Explanation:

During what geologic epoch did the last glacial advance occur?.

Answers

Answer:

Pleistocene epoch

Explanation:

How do viruses
cause disease?
A. takes over cell
and hacks the cells
machinery to make
more viruses
B. is engulfed by cell
and reproduces the
cell with its DNA
C. reproduces its
cell in the blood and
outnumbers the
healthy cells
D. engulfs
organelles and
becomes a cell that
can reproduce on its
own

Answers

Answer:

A. takes over cell and hacks the cells machinery to make more viruses.

Explanation:

Bacterial resistance to common antibiotics has been occurring over the last fifty years. Many antibiotics, like ampicillin, were effective in treating many bacterial infections but are not becoming significantly less effective. In order for a medical doctor to be able to explain to the patient why the same antibiotic can no longer be used to treat a similar infection, the doctor attempts to explain natural selection to the patient. Evaluate which of these components would be appropriate to include in the explanation to the patient and select ALL that apply.

A)The bacterial resistance includes all antibiotics.
B)The bacterial resistance to the antibiotic is genetic in origin.
C)The bacterial resistance to the antibiotic can be passed on to offspring.
D)The bacterial resistance to the antibiotic is because of an insufficient dose of antibiotic.
E)The bacterial resistance is the result of differential survival of a population of bacteria when exposed to the antibiotic.

Answers

Answer:

B, C, & E

Explanation:

just took the USATestprep

What do nucleosomes do?

Answers

Answer:

Nucleosomes are the basic packing unit of DNA built from histone proteins around which DNA is coiled. Explanation:  They serve as a scaffold for formation of higher order chromatin structure as well as for a layer of regulatory control of gene expression.

Answer:

Nucleosomes are the particles in DNA that are responsible for compaction and transcription, and may also carry hereditary information.

Hope this helps!

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