Why is a control group important in a scientific experiment?
Group of answer choices

It gives the scientist control over WHEN to change variables.

It is a comparison to the group where variables are changing.

It gives the scientist control over WHICH variables to change during the experiment.

It is the group where variables are changing so it controls the results of the experiment.

Answers

Answer 1

Explanation:

because it allows you to eliminate or isolate variable/ it allows the experiment to minimize the changes in all the variables except the one being test.

I'm not gonna choose bc I'm not 100% sure either so read what's above, think it over and choose wisely

hope I helped a little and good luck :)


Related Questions

Cells in the human body carry out different functions. Which cells help the body fight off diseases and remain healthy? Choose the two that apply.

Answers

Phagocytes and lymphocytes

Mary likes sour foods, and she decided to eat a slice of lemon. As she bit down on the lemon, she felt an uncomfortable squeezing-type sensation in her cheek as one of her salivary glands emptied its secretions into her mouth. Which of the three pairs of salivary glands did she feel

Answers

She felt the parotid.

I'm 99% sure this is right lol

WHY ARE THE TROPHIC LEVELS AND ENERGY REPRESENTED IN THE FORM OF PYRAMIDS?

Answers

Answer:

An energy pyramid shows the distribution of energy among trophic levels. Producers use energy from sunlight to make food. Herbivores eat plants—the producers—to get energy. ... Each level above gets smaller, because as energy is lost as heat, there is less energy avail- able as food for organisms.

nitrogenous base + sugar + phosphate group =

Answers

Answer:

Nucleoside

Explanation:

Nucleotide is an organic compound which is made from of nitrogenous base, a sugar, and a phosphate group.

Answer: nucleotide

Each nucleotide is composed of a nitrogenous base, a five-carbon sugar (deoxyribose), and a phosphate group. There are four nitrogenous bases in DNA, two purines (adenine and guanine) and two pyrimidines (cytosine and thymine). A DNA molecule is composed of two strands.

Which statement is FALSE?Question 39 options: Water can hold an unlimited amount of oxygen. Water can hold less oxygen than air can. Underwater organisms need oxygen. A small decrease in dissolved oxygen can have an effect on aquatic life. Underwater organisms use oxygen in cellular respiration.

Answers

Answer: Water can hold an unlimited amount of oxygen.

Explanation:

Water cannot hold an unlimited amount of oxygen because it would get to a point where it is saturated as it needs to hold Hydrogen as well. Air on the other hand, has significantly more space for oxygen as it contains only 21% and can keep taking more.

Underwater organisms need oxygen for respiration and a small decrease in the oxygen available in water affects aquatic life because they rely on it to survive.

calculate the distance covered by a school bus in 2 minutes moving with a velocity of 30m/s

explain also..​

Answers

Speed=30m/sTime=2min=120s

We know

[tex]\boxed{\sf Distance=Speed\times Time}[/tex]

[tex]\\ \sf\longmapsto Distance=30\times 120[/tex]

[tex]\\ \sf\longmapsto Distance=3600m=3.6km[/tex]

Động vật nào dưới đây thuộc bộ Gặm nhấm ?

Chuột chũi.

Chuột đồng.

Chuột chù.

Mèo rừng.

Answers

Answer:

chuột đồng

I hope it's helps you

What type of medication is prescribed for a bacterial infection such as strep throat?
antifungals
antibiotics
antivirals
antiprotozoals

Answers

I believe its Antibiotics


lol anyone?

the weather calls for icy roads to the city scatter salt in the road. explain how this may affect plants that are next to the road?​

Answers

Explanation:

A common way to clear icy roads is to apply a layer of salt, which lowers the freezing temperature of water and melts the ice.

Select the correct answer.
Why might two elements possess similar chemical properties?
OA. They belong to the same group of the periodic table.
OB. They have the same physical state.
OC. They have similar physical properties.
OD. They belong to the same period of the periodic table.
Reset
Next
2021 Edmentum. All rights reserved.

Answers

Answer:

A. They belong to the same group

Explanation:

Elements in the same group have same properties, because they have the same number of valence electrons.

On Galapagos islands with
sparse vegetation, how were
the tortoises adapted to this
environment?
A. They ate primarily soil.
B. They had shells that did not allow their
necks to move much at all.
C. They swam in the ocean to find food.
D. They had shells that allowed their
necks to extend.

Answers

the answer would have to be D

What is the function of the enzyme RNA polymerase during transcription?
helps slow down the process of transcription
helps speed up the process of transcription
aids in destroying the mRNA sequence that was read
aids in packaging amino acids for use at a later time

Answers

Answer:

The correct answer is - helps speed up the process of transcription.

Explanation:

RNA polymerase binds to the DNA sequence and copy a single DNA sequence into RNA and helps a single gene to produce hundreds or even thousands of RNA molecules during transcription.

It helps in the speed up the transcription by copying the sequence and producing mRNA for translation process later.

Answer:

I hope this helps.

Explanation:

define environmental science​

Answers

Answer:

Environmental science is the study of living organisms and how they interact with our environment. It covers a broad range of disciplines including engineering, information studies and research of environmental issues.

Hope this helps <3 Comment if you want more thanks and be sure to give brainliest (4 left) <3

Answer:

It is interdisciplinary academic that draws on ecology, geology, meteorology, biology, chemistry, engineering and physics to study environmental problems and human impacts on the environment

The DNA sequence ATC AGC GCT GGC CCG is part of a gene.

How many proteins are coded for by this message?
15
1
4
5

Answers

Answer:

There are 5 proteins coded for by this message.

Explanation:

For every 3 bases, a protein is coded.

Why is it essential for SARS-CoV2 RNA be translated on ribosomes before it can be replicated?

Answers

The SARS-CoV-2 non-structural protein 1 (Nsp1), also referred to as the host shutoff factor, suppresses host innate immune functions. By combining cryo-electron microscopy and biochemistry, we show that SARS-CoV-2 Nsp1 binds to the human 40S subunit in ribosomal complexes, including the 43S pre-initiation complex and the non-translating 80S ribosome. The protein inserts its C-terminal domain into the mRNA channel, where it interferes with mRNA binding. We observe translation inhibition in the presence of Nsp1 in an in vitro translation system and in human cells.

Please help me my assignment is due in 30 minutes

Answers

Answer:

The answer is plane

Explanation:

This should be in mathematics not bio

Why is The sun is the ultimate source of energy
for all living organisms.'

Answers

The answer is: The sun is called the ultimate source of energy because it is the source of almost all energies of the earth. Plants convert light energy from the sun into chemical energy (food) by the process of photosynthesis. Animals eat plants and use that same chemical energy for all their activities.

Answer:

"Sun is the ultimate energy source for all living organisms."

✴This is because plants need sunlight to make food through photosynthesis. This food is consumed by the animals and human-beings. Carnivores indirectly depend on plants for their food. So, if Sun is not there there will be no life on earth.

✴Secondly, sunlight is a good source of Vitamin-D.

Vitamin D is essential for strong bones, because it helps the body use calcium from the diet. Traditionally, vitamin D deficiency has been associated with rickets, a disease in which the bone tissue doesn't properly mineralize, leading to soft bones and skeletal deformities. So if sunlight is not there it can result in loss of Vitamin-D which can cause deficiency diseases.

✴If sunlight is not there there will be no day on Earth. Light will not reach our Earth. Every time there will be only darkness.

Answer From Gauth Math

Superficial similarities in structures that have the same function can seem like they are evidence of a common ancestor, but they are not. An example of this is the convergent evolution of wings in insects as well as in birds. What are these types of structures called

Answers

Answer:

Distinguishing between Similar Traits

Similar traits can be either homologous structures that share an embryonic origin or analogous structures that share a function.

LEARNING OBJECTIVES

Explain the difference between homologous and analogous structures

KEY TAKEAWAYSKey PointsOrganisms may be very closely related, even though they look quite different, due to a minor genetic change that caused a major morphological difference.Unrelated organisms may appear very similar because both organisms developed common adaptations that evolved within similar environmental conditions.To determine the phylogeny of an organism, scientists must determine whether a similarity is homologous or analogous.The advancement of DNA technology, the area of molecular systematics, describes the use of information on the molecular level, including DNA analysis.Key Termsanalogous: when similar similar physical features occur in organisms because of environmental constraints and not due to a close evolutionary relationshiphomologous: when similar physical features and genomes stem from developmental similarities that are based on evolutionphylogeny: the evolutionary history of an organismmolecular systematics: molecular phylogenetics is the analysis of hereditary molecular differences, mainly in DNA sequences, to gain information on an organism’s evolutionary relationships

nucleus is present in the animal cell

Answers

Answer:

Yes.

Explanation:

The nucleus is present in both animal and plant cells.

A mitosis inhibitor is a medication that is designed to prevent mitosis in certain cells. Why would these be helpful in the treatment of tumors

Answers

Answer:

because cancer cells are able to grow and eventually spread through the body (metastasize) through continuous mitotic division. Thus, cancer cells are more sensitive to inhibition of mitosis than normal cells.

Explanation:

Use the image on the right to match the following phrases to the correct level of organizational hierarchy.

Answers

Answer:

There is no image Could you please put the image

Explanation:

Thank You

Why would AZT be a poor candidate to inhibit SARS-CoV2?

Answers

Answer:

Due to its less effectiveness.

Explanation:

Azithromycin would be a poor candidate to inhibit SARS-CoV2 due to its less effectiveness. Azithromycin has no effect on the virus because this antibiotic can only attack on the structure of bacteria. Azithromycin is an antibiotic which is used for the treatment of a number of bacterial infections not viruses. They are not designed to destroy the structure of virus but for the bacteria.

What is phagocytosis?
A) how Trichoplax adhaerens processes stimuli
B) how Trichoplax adhaerens reproduces sexually
C)how Trichoplax adhaerens moves using its cilia
B)how Trichoplax adhaerens eats by engulfing its food
CAN I GET ANSWERS ASAP PLS

Answers

Answer:

D - How trichoplax adhaerens eats by engulfing it's food

Phagocytosis is a process in which Trichoplax adhaerens eats by engulfing its food, which is in Option D. It is a process by which the cells engulf the food that is coming from the outside of the cell.

What is phagocytosis?

The cell has many organelles, such as the lysosome, vacuole, cell nucleus, etc., but each organelle has a special function, and one organelle cannot take over the function of another organelle. The lysosomes have a very unique and acidic environment that destroys the organelles, such as old organelles, and kills viruses, etc.

When outside food particles or pathogens enter the cell, they enter as a vacuole, and the cell transports them from the outside to the inside through a variety of processes. The cell then eats them, a process known as phagocytosis, and if it is a virus, the lysosome degrades it.

Hence, Phagocytosis is a process in which Trichoplax adhaerens eats by engulfing its food, which is in Option D.

Learn more about phagocytosis here.

https://brainly.com/question/11667538

#SPJ2

mapa mental sobre El origen de las especies

Answers

El origen de las especies, cuya primera edición apareció en 1859, es el libro más conocido de El biólogo británico Charles Darwin. En el libro, Darwin expone su teoría de la evolución:

Afirma que toda la vida en la Tierra tiene un ancestro común. Que la selección natural es el mecanismo principal para la evolución de las especies.

El libro está considerado como una de las obras científicas más importantes de la historia. Causó revuelo en el momento de su publicación porque atribuyó la riqueza de la forma de vida en la Tierra a un proceso mecánico más que a una inteligencia sobrenatural. Es cierto que otros habían sugerido previamente que podría haber cosas como la evolución o la selección natural, pero "El origen de las especies" es el primer trabajo que extrae la mayor consecuencia de estos conceptos.

Aprende más acerca de este tema en https://brainly.com/question/16994577.

what is PM 2.5 and how does it affect people?​

Answers

Particles in the PM 2.5 size range are able to travel deeply into the respiratory tract
Fine particles (PM2.5) pose the greatest health risk. These fine particles can get deep into lungs and some may even get into the bloodstream. Exposure to these particles can affect a person's lungs and heart.

Please helppp!!! it’s of biologyyyy

Answers

Answer:

Im sorry i dont know the answer !!!

Explanation:

1. C (Both cells and tissue)
2. D (Protozoa)
3. A (Blood)
4. B (Virus)
5. B (Ribosome)
6. B (46)
7. A (Saturation)

Tiny structures that carry out cell functions are collectively called:

Answers

Answer:

YOUR ANSWER IS ORGANELLES .

THEY CARRY DIFFERENT FUNCTION INSIDE A CELL.

HOPE IT HELPS

The tiny structures that carry out various functions in a cell are collectively called organelles.

Organelles are microscopic in nature. Just like we have various organ parts in the human body that performs several body functions, so also do we have various organelles in a cell that carry out specific functions within a cell.

Organelles which can be referred to as "little organs" include the following: mitochondrion, nucleus, lysosomes, ribosomes, chloroplasts and so on.

Thus, all these tiny structures listed above which carry out cell functions are collectively called organelles.

Learn more about organelles here:

https://brainly.com/question/10078733

easy biology question below first correct answer gets brainliest

Answers

Answer:

Vestigial in that sense that the organ seemingly has no functions or useless now but they might have functions previously which are lost someway due to evolution. ... The human appendix may be considered as a vestigial organ as it has been proved that the removal of the organ after infancy does not create any harm

Explanation:

Where do organisms acquire the oxygen
necessary to carry out cellular
respiration?
A. It is removed from water.
B. It is from the atmosphere.
C. It is removed from food.

Answers

Answer:

oxygen is obtained from the atmosphere

In terms of pedogenic regimes, the process that results in an accumulation of humus overlaying a thick, water saturated layer of clay in cold, wet climates with poor drainage conditions is

Answers

Answer:

https://onlinelibrary.wiley.com/doi/full/10.1111/j.1936-704X.2015.03186.x the ans is more than 5000 lines so I cont lell it so it is the link of the ans

Other Questions
En que podria beneficiar la cosecha de agua de lluvia In an input/output table, all outputs are 0, regardless of the input. What could the function equation be? Select all that apply.y = 0 xy = xy = x/0y = 0/x f(10)calculate the indicated function value Management is a process designed to achieve an organization's objectives by using its resources ____________ (accomplishing the objectives with a minimum of resources) and _________________ (having the intended result). Find the cash value of the lottery jackpot (to the nearest dollar). Yearly jackpot payments begin immediately (26 for Mega Millions and 30 for Powerball). Assume the lottery can invest at the given interest rate. Powerball: $360 million; 5.4% interest a. $188,347,953 b. $282,573,702 c. $185,870,742 d. $298,386,685 What is it that if we have it we can not share it with others, if we share it with others we no longer have it?answer with intelligence. Question 3 of 10Select the action you would use to solve 3x = 12. Then select the propertythat justifies that actionSelect all that apply.A. Action: Add 3 to both sides.B. Action: Multiply both sides by 3.C. Action: Divide both sides by 3D. Property. Addition property of equalityE. Property: Multiplication property of equalityDF Property Division property of equality hlo guys please someone talk to me no one is talking with me worms move from computer to computer using wire true or false Arndt, Inc. reported the following for 2021 and 2022 ($ in millions): 2021 2022Revenues 888 980Expenses 760 800Pretax accounting income (income statement) 128 180 Taxable income (tax return) 116 200 Tax rate: 25% a. Expenses each year include $30 million from a two-year casualty insurance policy purchased in 2021 for $60 million. The cost is tax deductible in 2021. b. Expenses include $2 million insurance premiums each year for life insurance on key executives. c. Arndt sells one-year subscriptions to a weekly journal. Subscription sales collected and taxable in 2021 and 2022 were $33 million and $35 million, respectively. Subscriptions included in 2021 and 2022 financial reporting revenues were $25 million ($10 million collected in 2020 but not recognized as revenue until 2021) and $33 million, respectively. Hint. View this as two temporary differences-one reversing in 2021; one originating in 2021. d. 2021 expenses included a $14 million unrealized loss from reducing investments (classified as trading securities) to fair value. The investments were sold and the loss realized in 2022. e. During 2020, accounting income included an estimated loss of $6 million from having accrued a loss contingency. The loss was paid in 2021, at which time it is tax deductible. f. At January 1, 2021, Arndt had a deferred tax asset of $4 million and no deferred tax liability. Required: 1. Which of the five differences described in items a-e are temporary and which are permanent differences? 2. Prepare a schedule that reconciles the difference between pretax accounting income and taxable income. Using the schedule, prepare the necessary journal entry to record income taxes for 2022. 3. Prepare a schedule that reconciles the difference between pretax accounting income and taxable income. (Amounts to be deducted should be indicated with a minus sign. what make you happy in your life Multiply. Write your answer in scientific notation 4. Which of the following is an algebra tiles representation of 3x - 2 = -5? pls answer pls pls pls Could someone plz help ^w^ thank you! explain how to find the difference between 9^10/9^11 and 9^11/9^10 A 2-year-old girl fell approximately 12 feet from a second-story window, landing on her head. Your primary survey reveals that she is unresponsive; has slow, irregular respirations; and has blood draining from her mouth and nose. A rapid exam of her body does not reveal any gross injuries or bleeding. You should: why does a rational producer reject the business in increasing stage Ellie wants to double her savingsof $5000 by investing her moneyfor 20 years.What interest rate doesshe need to look for?Give your answer to 1 d.p. Does Anybody Know The Answer?