You are a scientist trying to determine whether a new drug will help treat heart disease. All of the following will generally increase the strength of your scientific study and your confidence in the results, except:

A) Increasing the number of patients in the study

B) Giving a placebo to the control group, thus controlling for the possibility that there will be a psychological effect of just receiving a pill

C) Making sure that the person handing out the pills knows which patients are getting a placebo versus which are getting the treatment

Answers

Answer 1

You are indeed a scientist investigating whether a novel medication will be successful in treating heart disease. Increase all other aspects of your scientific investigation, with the exception of patient enrollment.

Describe the heart.

The diameter of a fist, your heart is located in the center of your chest, leaning marginally to the left. It is the muscle that your circulatory system depends on to pump blood throughout your body while your heart beats.

How is the heart's function?

Your heart beats roughly 100,000 times every day. Your circulatory system is a network of coronary arteries that continuously circulates around five liters of blood throughout your body. In order to support your organs, this blood transports oxygen and vitamins to various body areas.

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Related Questions

The energy of an object due to its temperature is called
a. Temperature Energy
b. Thermometer
c. Thermal Energy
d. Chemical Energy

Answers

Answer:

C. Thermal energy.

The energy of an object due to its temperature is called Thermal energy.

When writing the name of an organism which part starts with a capitol letter?

A. Kingdom
B.genus
C.species

Answers

Answer:

I believe it is Genus, but I'm not sure.

Explanation:

The answer is B. Genus

What happens in an ad hominem persuasive technique? A limited number of options are presented. A person is attacked rather than an argument. Loaded language is used to appeal to emotions. A quick judgment is made without the use of evidence.

Answers

Answer: B

Explanation:edg2021

In an ad hominem persuasive technique a person is attacked rather than give an argument.

What is an ad hominem argument?

An ad hominem reasoning argument is a type of argumentation where its validity is not based on an attribute.

An ad hominem argument is fallacious because it does not involve verifiable information to be proved.

This type of argumentation occurs when one person is attacked based on feelings of prejudice and or fallacious commentaries.

In conclusion, a person is attacked rather than give an argument in an ad hominem persuasive technique.

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Biologically important tautomers involve Biologically important tautomers involve blankfor thymine and guanine and blank for cytosine and adenine.

a. True
b. False

Answers

Answer:

The correct answer is B.

Explanation:

Adenine and guanine are purine bases, thymine and cytosine are pyrimidines which make up the structure of the DNA. They are not tautomers. They can however get involved in tautomerism which is the transfer of protons and electrons between chemical compounds that are usually structurally isomers. So the answer is B.

I hope this helps.

Which of the following is not a way humans affect the Carbon Cycle?

a
Volcanic eruption which spew tons of carbon dioxide and other carbon rich gases into the air.
b
Conversion of forest and ecosystems into cities and other areas.
c
Burning of fossil fuels through transportation and industry.
d
Increase in farming and ranching of animals, which changes land use and produces Carbon rich gases.

Answers

Answer:

D or B

Explanation:

I think this is correct

hope this helps :)

Why do you think that it is important for health care workers to have corona virus vaccine?

Answers

Yes, I think it is essential for health care workers to receive the coronavirus vaccine. Health care workers, such as doctors and nurses, help patients with and without the virus. I believe that all health care workers should be vaccinated for their own health and their patients' health.

Hydrogen bonding is primarily responsible for the high ______ of water.
a. freezing point
b. boiling point
c. conductivity
d. polarity

Answers

The hydrogen bond is responsible for many of the anomalous physical and chemical properties of compounds of N, O, and F. In particular, intermolecular hydrogen bonding is responsible for the high boiling point of water (100 °C) compared to the other group 16 hydrides that have much weakerhydrogen bonds

Explanation:

Therefore, option b is correct.

Hydrogen bonding is primarily responsible for the high boiling point of the water. Thus, the correct option is B.

What is Hydrogen bonding?

Hydrogen bonding is an interaction which involves a hydrogen atom that is located between a pair of other atoms such as nitrogen, oxygen, and fluorine which have a high affinity for electrons, and such a bond is weaker than an ionic bond or a covalent bond but are stronger than van der Waals forces and dispersion forces.

Hydrogen bonding is primarily responsible for the high boiling point of water solvent. Hydrogen bonding is a strong affinity. Hydrogen bonding is created when a hydrogen atom is bonded to an electronegative atom by approaching a nearby electronegative atom.

Therefore, the correct option is B.

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What is the energy molecule that is being used during photosynthesis?

A. H2O

B. NADPH

C. Mitochondria

D. ATP

Answers

ATP i think! Have a good day, and good luck!
The right answer -ATP 100%

What does it mean if a galaxy gives off light that has been shifted toward the red
end of the electromagnetic spectrum?

Answers

Answer: Redshift and blueshift describe how light shifts toward shorter or longer wavelengths as objects in space (such as stars or galaxies) move closer or farther away from us. ... When an object moves away from us, the light is shifted to the red end of the spectrum, as its wavelengths get longer.

Explanation:

HELP ME PLEASE ILL GIVE YOU POINTS AND BRAINLIEST

word bank :
methane
reemitted heat
reradiated heat
solar radiation
carbon dioxide

label the diagram

Answers

Answer:

A= Methane

B= Carbon Dioxide

C= Solar Radiation

D= reemitted heat

E = reradiated heat

Sauce me brainliest

what is a reactant of photosynthesis

Answers

Reactants: sunlight, CO2, H2O
Products: glucose and O2

Answer:

water carbon dioxide and energy

the products are glucose and oxygen

Explanation:

Mitosis occurs in certain types of eukaryotic cells called:
A. Gametes
B. Somatic cells
C. Sex cells
D. Egg and sperm cell

Answers

Answer: somatic cells

Explanation: the other three don’t cause mitosis, instead cause meiosis

Use the cladogram to answer the question. Which trait(s) does the salamander have?
Lancelet
(outgroup) Lamprey Tuna Salamander Turtle
Leopard
Hair
Amniotic e99
Four walking legs
Jaws
Vertebral column
amniotic edd and hair
vertebral column, jaws, and four walking legs
four walking legs only
vertebral column and jaws only

Answers

Answer:

everything plesiomorphic (ie ancestral) so 4 walking legs, jaws and vertebral column

Explanation:

We can study DNA to trace the processes of evolution
A) True
B) False

Answers

Answer:

True

Explanation:

It's true because it wants to be true.

True because I learned this in school. Trust me :)

REUSE
How can I reuse things at school?​

Answers

One way in which you can do this is by using both sides of the paper you write on.

I hope this helps.

As atmospheric CO2 increases, the amount of CO2 dissolved in seawater is expected to increase as well. This produces more carbonic acid, which then dissociates into hydrogen ions and something else.

Answers

Answer:

(HCO3-) bicarbonate

Explanation:

88 points please help will give brainiest

1. What are some patterns noticed about buffalo feeding? Any specifics about the season, food preference, habits, etc.



2. What are some patterns noticed about other organisms’ feeding patterns? Any specifics about the season, food preference, habits, etc.



3. Make notes of anything that could affect the buffalo’s ability to feed.

Answers

Answer:

1.

The population and the size of the African Buffalo increased from 1961 to 1975 by almost 50,000.

The population and the size of the African Buffalo decreased from 1976 to 1998 about 62,000.

At the year of 1999, the population and the size of the buffaloes begin to increase again.

From the years 1975 to 1985, they didn't collect any data

2.  

Prey traveled in groups

There were adult animals watching their young

The groups seem like they're separated

3.

The feed will enter the rumen compartment when swallowed by the animal. ... The pH of the rumen content is similar to that of cattle, and it is affected in the same ... between protein and energy in the rumen to be able to do their qualified job.

What usually happens in the tropical rainforest

Answers

Tropical rainforests occur in regions of the tropics where temperatures are always high and where rainfall exceeds about 1,800 to 2,500 mm (about 70 to 100 inches) annually and occurs fairly evenly throughout the year.

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hi guys so i have two pet frogs and yesterday my sister wanted to be a co owner of them she does nothing for them just takes pictures what should i tell her and she also wants to change their names to a name i dont like its my frog not hers and she wants it to be hers to and change the name what should i do

Answers

yes definitely tell her she cant co own if she doesnt care for them. you, the original owner, should be able to choose and keep their names..

Answer:

You should tell her that it is you frog, and Since you have two let her name one of the frogs that way she does not get upset or mad or  take turns with a frog like she gets a week and then you get it

trust me I am the oldest out of 4 kids so

Explanation

Hope this helps you

how do you prove the fact that green plant releases Oxygen gas in the process of photosynthesis explain the experiment.​

Answers

Conclusion: Formation of gas bubbles prove that oxygen is produced by the green plants during photosynthesis.

Answer:

Aim : To prove that oxygen is produced during photosynthesis

Procedure : Place water plant in a beaker containing pond water.

Cover the plant with short stemmed funnel.Invert the test tube full of water and cover the stem of the funnel.While placing the test tube, ensure that the level of the water in beaker is above the level of stem of funnel.Expose the apparatus to the sunlight.

After few hours, gas bubbles will form and collect in the test tube.Test the gas in the test tube.

A glowing splinter bursts into the flame shows the presence of oxygen.

Observation: Gas bubbles in a test tube.

Result: Presence of oxygen.

Conclusion: Formation of gas bubbles prove that oxygen is produced by the green plants

How does the gametophyte generation differ genetically from the sporophyte generation?


It contains a full set of genetic material (is diploid).

It undergoes asexual reproduction.

It lacks genetic material (DNA).

It contains half the genetic material (is haploid).

Answers

Answer:

I'm pretty sure it is d.

Explanation:

Answer:

It contains half the genetic material (is haploid).

Explanation:

right on edge

HELP ASAP PLS!

In the diagram below, which represents the male reproductive organs of the flower?







Structure A


Structure B


Structure C


Structure D

Answers

Answer:

C.

Explanation:

It's the stamens, they release the pollen which is a male reproductive cell in plants. Hope that helps!

Answer:

The answer is C)

Explanation:

1. Populations do not permanently remain at carrying capacity T/F

Answers

What’s the question

Hi i need help with this, it shouldnt be too hard.


Describe the difference between gene mutations and chromosomal mutations, including:

- What are they?

- How do they occur, including their types?

- When will they result in a change in the phenotype of offspring?

Answers

Explanation:

Genetic alternations include chromosomal abnormalities and gene mutations. Chromosomal abnormalities generally arise during cell division. ... Gene mutations are permanent changes in DNA gene sequence. They can arise during normal DNA replication or in response to environmental factors.

Answer:

When a gene mutation occurs, the nucleotides are in the wrong order which means the coded instructions are wrong and faulty proteins are made or control switches are changed. The body can't function as it should. Mutations can be inherited from one or both parents. They are present in the egg and/ or sperm cells.

What type of mutation can affect offspring?

The only mutations that matter to large-scale evolution are those that can be passed on to offspring. These occur in reproductive cells like eggs and sperm and are called germ line mutations. No change occurs in phenotype. Some mutations don't have any noticeable effect on the phenotype of an organism.

The five factors that are common characteristics of living things include cellular composition, reproduction, response and adaptation, metabolism, and what?

A. diversity
B. systems
C. evolution
D. Phylogenetics

Answers

Answer:

option C is answer evolution

Five factors are common characteristics of organism reproduction, reaction and adaptation, metabolism, and evolution.

What are the five characteristics of living things?

Big idea: All living things share certain properties such as tissue, fertility, growth and development, energy expenditure, homeostasis, response to the environment, and adaptability.

What are the characteristics of living things?

Organisms have many characteristics of different pronunciations. They breathe, move, respond to stimuli, breed, grow and depend on the environment.

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a butterfly has a long dash tube called dash

Answers

Answer:

cool what about it

Explanation:

Answer:

cool

Explanation:

2. Which type of nuclear energy is used in commercial nuclear reactors to produce electrical
energy? In two to three sentences, describe how a nuclear power plant works.

Answers

Answer:

nuclear fission

Nuclear power comes from nuclear fission

The steam is used to spin large turbines that generate electricity. Nuclear power plants use heat produced during nuclear fission to heat water. In nuclear fission, atoms are split apart to form smaller atoms, releasing energy

In nuclear power plants, neutrons collide with uranium atoms, splitting them.  In the core of nuclear reactors, the fission of uranium atoms releases energy that heats water to about 520 degrees Farenheit. This hot water is then used to spin turbines that are connected to generators, producing electricity

Explanation:

PLEASE HELP FAST
4. Which choice is a risk factor that may increase chances of abusing alcohol?
1.no access to alcohol
2.no peer pressure
3.alcoholic parent
4.high self-esteem

Answers

Answer:

3.alcoholic parent..ÔwÔ

Why is the parietal lobe sometimes called the
"association lobe"?

Answers

Answer:

The parietal lobes are primarily responsible for receiving and processing sensory input such as touch, pressure, heat, cold, and pain. The parietal lobes are also involved in the perception of body awareness and the construction of a spatial coordinate system (mental map) to represent the world around us

Answer:

The parietal lobe is one of the four major lobes of the cerebral cortex in the brain of mammals. The parietal lobe is positioned above the temporal lobe and behind the frontal lobe and central sulcus. ... The name comes from the parietal bone, which is named from the Latin paries-, meaning "wall".

Explanation:

1. What is a biogeochemical cycle?
2. What drives, or powers, the water cycle?
3. What causes water to condense and form clouds?

Answers

Answer:

1. In ecology and Earth science, a biogeochemical  cycle or substance turnover or cycling of substances is a pathway by which a chemical substance moves through biotic and abiotic compartments of Earth.

2. The sun, which drives the water cycle, heats water in the oceans. Some of it evaporates as vapor into the air. Rising vapor cools and condenses into clouds.

3. Heated by sunshine, the ground heats the air just above it. That warmed air starts to rise because, when warm, it is lighter and less dense than the air around it. As it rises, its pressure and temperature drop causing water vapor to condense. ... The air cools as it rises, and eventually clouds form.

Explanation:

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