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Hypothesis: If snails are present, then they will release carbon dioxide which the Elodea will take in.


What is the control to test this hypothesis?


A: Elodea plants in the dark

B: Elodea plants in the light

C: Elodea plants with snails

D: Elodea plants without snails

E: bromthymol blue without plants or snails

ONLY ONE ANSWER CAN BE CHOSE

Answers

Answer 1
d: elodea plants without snails

Related Questions

Knowing that the genetic code is universal, scientists use molecular biological methods to insert the human beta-globin gene into bacterial cells, hoping the cells will express it and synthesize functional beta-globin protein. Instead, the protein produced was nonfunctional and is found to contain many fewer amino acids than does beta-globin produced by eukaryotic cells. Explain why.

Answers

Answer is given below :

Explanation:

When the beta-globin gene is inserted into the bacterial chromosome, during insertion, beta-globin forms a stop codon between the coding sequences of beta globin, resulting in a reduced amino peptide. Acid on translationFurthermore beta-globins form a tertiary protein complex with alpha-globin, which in addition to the ham-subgroup forms functional hemoglobin. Since we only put the beta-globin gene on the bacterium-chromosome that is not enough to make a functional protein, we found a non-functional protein

How does carbon dioxide leave the atmosphere?

Answers

Plants go through a process called photosynthesis where they take in carbon dioxide from the atmosphere (as well as water and sunlight), and they turn it into oxygen (so we can breathe) and glucose (sugar)!
Plants breathe in carbon dioxide and breathe out oxygen!

What is a real world example of a molecular pump in the human body?

Answers

Answer:

The most common example of a molecular pump in the human body is the pump for sodium and potassium.

Explanation:

Sodium ions and ATP bind to the pump to use energy to change the shape. The sodium then leaves and the potassium can now bind due to the shape change. The potassium ions are then released and the pump goes back to normal for the cycle to repeat again.

There are many cells in your body that use pumps to move molecules. For example, your nerve cells (neurons) would not send messages to your brain unless you had protein pumps moving molecules by active transport. The sodium-potassium pump (Figure below) is an example of an active transport pump! Have a nice day

In RNA processing, the coding sequence that remains
in the final mRNA.
A. exons
B. operon
C. genome
D. diploid
E. nucleosome
F. recessive
G. restriction enzyme
H. haploid
I. dominant
J. gel electrophoresis

Answers

Answer:

The answer is A. exons.

Explanation:

Exons-In RNA processing, the coding sequence that remains in the final mRNA.

In actuality, the DNA sequence of the human genome is NOT random. Some sequences, including some very large sequences, are repeated many times throughout the human genome. Write two ideas you have for how this fact complicates the use of CRISPR gene-editing technology in humans.

Answers

Answer:

repeated DNA sequences decrease the target specificity of the CRISPR-Cas system, and may lead to off-target effects  

Explanation:

The CRISPR-Cas system is a versatile and powerful tool for gene editing. This gene-editing tool consists of a single guide RNA (sgRNA) that guides the Cas endonuclease protein to the appropriate genomic locus, where Cas generate a double-strand break in the DNA and thus induces DNA repair either by Non-homologous end joining (NHEJ) or Homologous Recombination (HR) repair pathways. The sgRNA consists of a 17-20 nucleotide sequence which is complementary to the target DNA, this sequence is called crispr RNA (crRNA). The existence of repeated DNA sequences hampers the specificity of the CRISPR-Cas tool because a particular sgRNA is able to guide Cas9 to different genomic loci that have the same (repeated) nucleotide sequence complementary to the crRNA. In consequence, repeated DNA sequences may lead to undesired off-target effects, i.e., unintended cleavage (and therefore unintended mutations) at untargeted genomic sites.

Explain how these terms work together IN TRANSLATION: mRNA, tRNA, codon, amino acid, and protein.

please help :( this assignment is due soon...

Answers

Answer:

The mRNA leaves the nucleus and travels to the ribosome where proteins are synthesized

Explanation:

During transcription, a messenger RNA (mRNA) molecule is synthesized from a specific DNA region which is referred to as a gene. Subsequently, the mRNA leaves the cell nucleus through the nuclear pores of the nuclear membrane and travels to the ribosome, where this sequence serves as template to synthesize a protein, in a process known as translation. Within the ribosomes, triplets of consecutive RNA nucleotides called codons bind to complementary RNA nucleotides (called anticodons) of the transfer ribonucleic acids (tRNAs). Each tRNA attaches a specific amino acid that corresponds to its anticodon sequence, which is then added to the nascent polypeptide chain.

A trait that makes an individual different from other members of it species is called

Answers

Answer: An inherited trait that makes an individual different from other members of its species is called a variation.

A trait that makes an individual different from other members of it species is called variation.

What is trait?

Trait is defined as the physical or behavioral traits that are impacted by an organism's surroundings and are handed down to it genetically or through observation.

It can also be defined as a simple trait, also known as a character state, is a specific variation of an organism's phenotypic characteristic that can be inherited or acquired by environmental factors, but it usually results from a combination of the two.

There are basically five types of traits.

Mendel's pea plant traitsDog coat traitsMonogenic traitsPolygenic traitsBehavioral traits

Variation is defined as any genetic variation or the impact of environmental circumstances on the development of genetic potential that results in a difference between cells, individuals, or groups of organisms of any species.

Thus, a trait that makes an individual different from other members of it species is called variation.

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You are curious about the dynamic instability of microtubules and decide to join a lab that works on microtubule polymerization. The people in the lab help you grow some microtubules using conditions that allow you to watch individual microtubules under a microscope. You can see the microtubules growing and shrinking, as you expect. The professor who runs the lab gets in a new piece of equipment, a laser beam that is very fine and can be used to sever microtubules. She is very excited and wants to sever growing microtubules at their middle, using the laser beam.

a. Do you predict that the newly exposed microtubule plus ends will grow or shrink? Explain your answer.
b. What do you expect would happen to the newly exposed plus ends if you were to grow the microtubules in the presence of an analog of GTP that cannot be hydrolyzed, and you then severed the microtubules in the middle with a laser beam?

Answers

Answer:

Follows are the explanation to the given points:

Explanation:

The polymerization of αβ-tubulin ligands costumes the microtubules. Among rising or reducing processes a microtubule may oscillate. Part of the carbon is a polar framework for two separate ends: a rapidly growing, most ending as well as a slow-growing less end.

In point a:

Severing a mitochondrial membrane throughout the media will create new "plus ends" or "minus ends." when mentioned in the question Then microtube is more prone to growth at most by adding GTP sub-units to some of the most open regions, where β-tubulin is activated. Even so, for some time GTP has also been hydrolyzed, keeping only one cap of the newly created, higher-end GTP-carrier subunits together with the remaining GDP-carrying cylindrical cap.

Consequently, a positive end is developed that consists of GDP subunits. Because the GDP sub-units become less strictly connected than that of the GTP sub-units, they eventually separate from one another. This allows a microtubule to be polymerized which causes the microtubule will shrink. But the newly exposed microtubule and sides will shrink if cut throughout the center.

In point b:

Well if the equivalent of GTP with such a microtubule is separated by laser from a non-hydrolyzable one, the newly exposed plus finish will include GTP carries. This GTP was NOT supplied with both the GDP kinase but would still expand the mitochondrial membrane. The unburned GTP plus microtubule will therefore continue to grow once it is cut in the center. The GTP equivalent is not hydrolyzable.

Agriculture has only a positive impact on the land.
True or False?

Answers

False; Agriculture can negatively impact the environment when fertilizer enters the water, contaminating it. Agriculture can also lead to deforestation, the lack of trees will lead to erosion.

What are Hydrothermal Vents? Do they contribute to the saltiness of the sea? Why or why not?​

Answers

Answer:

These vents contribute dissolved minerals to the oceans, which is one reason the oceans are salty. Rivers and surface runoff are not the only source of dissolved salts. Hydrothermal vents are recently-discovered features on the crest of oceanic ridges that contribute dissolved minerals to the oceans.

Hydrothermal vents form at locations where seawater meets magma

please give brainliest >_<

please help me with this , thank you so much

Answers

Answer:

1)mitosis 2)meiosis 3)mitosis 4)meiosis 5)meiosis 6)mitosis 7)mitosis 8)meiosis specifically in prophase 1

Explanation:

How would you compare
and contrast physical and chemical properties?

Answers

Answer:

The Answer is in the Explanation Bellow

Explanation:

A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change.

Answer: Chemical change produces a new substance, while a physical change does not. A material may change shapes or forms while undergoing a physical change, but no chemical reactions occur and no new compounds are produced.

Explanation:

Need some quick help with this:

Answers

Answer:

Explanation:

D

Answer:

option C

Explanation:

cellular respiration is the correct answer of this question.

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hope this will be helpful to you.

Question 18 of 20 :
Select the best answer for the question.
18. How has the use of herbicides affected agricultural productivity?
O A. Fewer pesticides are needed because of parasitoids.
OB. Fewer people are needed to weed because of herbicides.
O C. Fewer crops are produced because of herbicides.
O D. Fewer crops are organic because of the use of Bt toxin.
O Mark for review (Will be highlighted on the review page)

Answers

Answer:

B. Fewer people are needed to weed because of herbicides.

Explanation:

Herbicides are chemical substances specifically used to control the widespread growth of weeds i.e unwanted plants. Using herbicides has been useful in eradicating the weeds that pose a great threat to agricultural productivity.

Since chemical control (herbicides) has proven to be a faster and effective method, fewer people are needed to involve in the physical control of weeds i.e. weeding. Hence, the use of herbicides has affected agricultural productivity by helping to reduce the amount of laborers.

Consider, pea plants, for which green color is dominant to yellow color, and two leaves are dominant to three. A cross between two plants that are heterozygous green and heterozygous tall is completed. What is the phenotypic ratio? 1:1:1:1
9:3.3:1
1:3:3:9
9:1:3:3​

Answers

Answer:

The phenotypic ratio is 9:3:3:1

Explanation:

Available data:

green color (G-) is dominant to yellow color (gg)G allele is dominant. g allele is recessivetwo leaves (T-) are dominant to three (tt)T allele is dominant, t allele is recessive

Cross: between two plants that are heterozygous green and heterozygous tall

Parentals)       GgTt      x      GgTt

Phenotype) Green color     Green color

                    Two petals      Two petals

Gametes)  GT, Gt, gT, gt   GT, Gt, gT, gt

Punnett Square)      GT          Gt         gT         gt

                      GT    GGTT    GGTt    GgTT      GgTt

                      Gt     GGTt      GGtt     GgTT     Ggtt

                      gT    GgTT       GgTt     ggTT     ggTt

                      gt     GgTt        Ggtt       ggTt     ggtt

F1) Genotype:

    1/16 GGTT

    2/16 GGTt

    1/16 GGtt

    2/16 GgTT

    4/16 GgTt

    2/16 Ggtt

    1/16  ggTT

    2/16 ggTt

    1/16 ggtt

     Phenotype:

    9/16 G-T- --> Green-colored and two-leaved plant

    3/16 G-tt ----> Green-colores and three-leaved plant

    3/16 ggT---> Yelow-colores and two-leaved plant

    1/16 ggtt ---> Yeloow-colores and three-leaved plant

                     

Why are fossils not found in igneous rocks?

Igneous rocks are too dark in color to contain fossils.
Igneous rocks are found too deep underground.
Igneous rocks are made from cooling of lava or magma.
Igneous rocks are too dense to contain fossils.

Answers

Answer:Igneous rocks are made from cooling of lava or magma.

Psychology. A group of scientists have created a new drug X that helps with anxiety.what is your hypothesis?

Answers

Answer:

The correct answer would be - hypothesis would be "If Drug X treats anxiety, then people who have anxiety and take Drug X should stop having symptoms.”

Explanation:

A hypothesis is an assumed or purposed explanation for a phenomenon on the basis of the available evidence at the beginning of the investigation. It required a scientific method to check if the hypothesis is true or not.

In the given case the most accurate hypothesis would be based on the fact that the drug X is helpful in case of anxiety and if it really helps such a patient then this drug should stop symptoms of anxiety.

Is colorblindness inherited from a persons parents or do they get it from the environment?

Answers

Answer:

The most common kinds of color blindness are genetic, meaning they're passed down from parents. If your color blindness is genetic, your color vision will not get any better or worse over time. You can also get color blindness later in life if you have a disease or injury that affects your eyes or brain.

Answer:

yes ,mostly colorblindness is inherited

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How is the nitrogen cycle important to humans?
OS
It produces free nitrogen that humans can breathe.
It converts nitrogen into a form that humans can obtain by eating other organisms.
It produces nitrogen compounds that humans can breathe.
It converts nitrogen into a form that humans can obtain by absorbing it through their skin.

Answers

Humans obtain nitrogen by eating other organisms.

Answer:

B. It converts nitrogen into a form that humans can obtain by eating other organisms.

Explanation:

Right for e2020

Which element is the basis for all living things and can combine with other elements in many ways?

phosphorus
carbon
oxygen
sulfur

Answers

Answer:

Carbon is the most important element to living things because it can form many different kinds of bonds and form essential compounds.

Believe this ITS CARBON NOT OXYGENNNNN

Carbon is the basis for all living things and can combine with other elements in many ways. Hence, option B is correct.

What is the role of carbon in living organisms?

Plants employ carbon to create their leaves and stems, which animals then eat and use for cellular growth. Gases like carbon dioxide are among the forms of carbon that are stored in the atmosphere. Additionally, many different marine species catch it and store it in the oceans.

Carbon serves as the fundamental building block for the majority of cells in the human body. The regulation of the body's physiology is another job for carbon. There are important biological activities that involve carbon in both plants and animals.

Thus, carbon is the basis for all living things and can combine with other elements in many ways. Hence, option B is correct.

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Severe storms all have extremely strong winds that can cause a lot of environmental damage.
Which storm below has the strongest winds?
O cyclone
O hurricane
O thunderstorm
O tornado

Answers

The storm that has the strongest winds is TORNADO.

A tornado can be defined as a narrow-violent rotating column of air in contact with the ground, which is often attached to the base of a thunderstorm.

It is hard to observe a tornado unless it forms a condensation vertical wind tunnel composed of water droplets and dust.

In the most violent tornadoes, wind speed may reach 300 miles (480 kilometers) per hour.

In conclusion, the storm that has the strongest winds is TORNADO.

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Answer: its tornado i just took the test on edge2020  on the storm assignment.

Explanation: :)

What are the 3 ways to dissolve a solute in a solvent? HELP!
Dissociation
Ionization
Aspiration
Dispersion

Answers

Answer:• Apply a strip of masking tape, about 3 inches long, to the outside of each jar. Label each vial in writing on the masking tape with the marker. Write the following labels: hot water, cold water, RT water, vinegar, alcohol.

• Add 1 cup of the appropriate liquid to each of the labeled jars. Wear eye protection when working with vinegar or alcohol.

• Add 2 tablespoons of sugar to the pitcher of cold water. Immediately start the stopwatch and begin to stir slowly until all the brown sugar is dissolved. Record how long the process took.

• Add 2 tablespoons of sugar to the jug of hot water, start the timer and stir the liquid at the same rate as in step 1 until all the brown sugar is dissolved. Write down how long it takes.

• Repeat the process of adding the sugar, stirring, and the time it takes for all the sugar to dissolve for the jugs of room temperature water, alcohol, and vinegar.

• Compare your results. Does sugar dissolve faster or slower from one solvent to another? Does sugar completely dissolve in each solvent? How did the temperature of the water affect the time it took for the sugar to dissolve?

Explanation:

8. In snapdragons, red flower (R) color is incompletely dominant over white flower (1) color. The heterozygous (Rr)
plants have pink flowers.
A. If a red-flowered plant is crossed with a white-flowered plant, what are the genotypes and phenotypes
of the plants F1 generation?
B. What genotypes and phenotypes will be produced in the F2 generation?
C. What kinds of offspring can be produced if a red-flowered plant is crossed with a pink-flowered plant?
D. What kind of offspring is/are produced if a pink-flowered plant is crossed with a white-flowered plant?

Answers

Answer:

A. Genotypes: Rr

Phenotypes: All Pink

B. Genotypes in the F2 generation: RR, 2Rr, rr

Phenotypes: red, pink and white

C. 1RR (red): 1Rr (pink).

D. 1Rr (red) : 1rr (white).

Explanation:

This question involves one gene coding for flower color in snapdragon plants. The allele for red color (R) is incompletely dominant over the allele for white color (W), to form an intermediate pink color (RW).

A. If a red-flowered plant (RR) is crossed with a white-flowered plant (rr), the genotypes of the offsprings will be Rr with a pink color phenotype.

B. In the F2 generation i.e. Rr × Rr, the following will be produced: RR (red), 2Rr (pink), and rr (white).

C. if a red-flowered plant is crossed with a pink-flowered plant, the following will be produced: 1RR (red): 1Rr (pink).

D. if a pink-flowered plant is crossed with a white-flowered plant, the following will be produced: 1Rr (red) : 1rr (white).

The _____ strand of the opened DNA is easily replicated, but the ______ strand must be replicated in pieces because of it's orientation.
a. lagging; leading
b. leading; lagging
c. bottom; top
d. top; bottom

Answers

Answer:

B. Leading; lagging.

Explanation:

The leading strand is made as a continuous piece. The the lagging strand is made in small pieces.

B
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What are two ways selective breeding is helpful in agriculture? A. It can take many generations to get desired traits. B. It can cause animals to inherit two recessive alleles C. It can produce crops that are resistant to pests. D. It can result in animals that can produce more food.​

Answers

pretty sure it would be C and D

The two ways in which selective breeding is helpful are that it can produce crops that are resistant to pests and animals that can produce more food; these are options C and D.

What is the importance of selective breeding?

Selective breeding produces plants and animals that are genetically modified to have a specific trait, such as animals being modified to produce higher-quality milk and meat or plants being modified to produce pest-resistant foods. This type of breeding and its resultant product are different from the wild type, and generally, these products are made for the commercial purpose of feeding a large population.

Hence, the two ways in which selective breeding is helpful are that it can produce crops that are resistant to pests and animals that can produce more food; these are options C and D.

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It maintains homeostasis by working with all body systems

A. Musculatory
B. Skeletal
C. Nervous
D. Digestive

Answers

Answer:

The answer is C. Nervous

Blease give me BRAINLEST

Answer:

C

Explaination:

If there are 21 boys and 42 girls in a room, fill out all of the possible ratios of boys to girls that could be made.

Answers

We have that for the Question "If there are 21 boys and 42 girls in a room, fill out all of the possible ratios of boys to girls that could be made." it can be said that

the possible ratios of boys to girls that could be made are

21:421:210:205:10And any ratio that gives a ha

From the question we are told

If there are 21 boys and 42 girls in a room, fill out all of the possible ratios of boys to girls that could be made.

Generally the equation for the Ratio  is mathematically given as

x=21:42

Therefore

21:42

1:2

10:20

5:10

Therefore

the possible ratios of boys to girls that could be made are

21:421:210:205:10And any ratio that gives a half

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Some plants produce fruit which contains their seeds. How does producing fruit benefit the plant?

Answers

Answer:

The Answer is B

Explanation:

I got it right on my Bio hw

animal often carry the seeds away from parent when they eat fruit is a type of seed dispersal.

what is seed dispersal ?

Seed dispersal can be defined as the process where the movement and spread of seed away from the parent plant by different carrier

Dispersing seeds there is less competition between seeds and The act of seed dispersal includes three phases such as departure, transfer and settlement

There are five different dispersal mechanism such as  wind (anemochory) water (hydrochory), gravity (barochory), ballistic and dispersal done by animals (zoochory).

the most effective method was the zoochory, but today the most effective seed dispersal is the seed dispersal done by humans, because of the big technology boom.

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A women has blood type o, her baby has type a: is it possible that a man who has the blood type ab could be the father?

Answers

Yes the guy could be the father

Answer: Yes it could

Explanation: type o is the type that can be donated to anyone and it is a rare kind and it's also dominated the father type ab is a type where it's not as dominant but it can take over there for the baby could be type a cause type o is rare to get.


What happens during Go phase of the cell cycle?
O A. The cell splits in two.
B. The cell starts to die.
O c. The cell continues to live.
D. The cell makes new chromosomes.

Answers

Explanation:

The answer is C. because this is a new cell that is not preparing to divide or die..

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PLEASE HELP 15 POINTS!!!!!!!!!What is a reflection?A.) a personal narrative that uses symbolismB.) thoughts, feelings, and insights about an eventC.) historical documents that only include facts A worker on the production line is paid a base salary of $170 per week plus $1.21 for each unit produced. Write an equation to represent his earnings of $491.86 for a week when he produced x units. How many units did he produce? Use pencil and paper. If the worker had produced twice that number of units, what would his earnings have been? Show your work. 13. Find AC. PLEASEE I NEED HELP!!!!! Is x = -4 a solution to these equations? Show your work and write YES or NO.1. 3(2x-4) = -362. 5x - 6x - x = 183. 5 - 2(3x - 1) = 31 Chancellor Manufacturing makes two pumps for use in household reef aquariums. The Standard pump (Model A) requires 4.5 lbs of stainless steel while the Deluxe lightweight pump (Model B) 3.0 lbs of stainless steel. There are 63 lbs of stainless steel available during this production period. The combined production of both pumps must be at least 12 pumps. There are orders for at least 6 of the lightweight Model B. Lastly, management has decided that no more than 15 Model B pumps be produced.Required:a. Write the LP formulation which provides the optimal production schedule for the standard and deluxe pumps such that the cost is minimized.b. Write the above LP formulation in Standard Form.c. Using your grid page, graph the above LP formulation. Be sure to label axes, constraints, and the feasible region. Work out the size of angle x Next to 164 and 90 Bainliest. Mole ConversionUsing dimensional analysis determine how many moles are present in 125g of Oxygen gas. O = 16.0 g/mol (3 sig figs) Need help ASAP! I have no idea how to do this Find the 3rd term in the sequence Is malachite made of just copper? Question 2Which is a feature of classic novels? Calculate the amount of copper (in moles) in a 29.4 g pure copper sheet. Please find the area of D, E, and F.This would be appreciated :) If g(x)=5/4x-7 what is the value of g(12) solve for x and y, show your work with your answer. The budget for a school dance is 370.00. The band charges $65.00 per hour. What is the maximum number of hours the school can have the band play at the dance? Using _____ information will help you determine whether an industry is expected to increase employment.career outlookaverage wagecareer descriptionemployer benefit Rose has a rectangular patio that is 8 tiles long and 5 tiles wide. She is changing the dimensions to 10 tiles long by 9 tiles wide. Draw a picture to determine how many new tiles Rose will add to her patio. A. 6 B. 8 C. 50 D. 90 Why did Meg get sent to the principal office? Which situation describes a reaction with a percentage yield of 100%?Select one:a. none of themb. No competing reactions occur and the limiting reagent is fully consumed.c. The amounts of reactants initially present are stoichiometric.d. The product is more than the limiting reagent has the potential to produce.