Help please
In an experiment, 90 newborn flies are divided evenly into three separate
groups and placed in boxes inside an incubator that is maintained at a
constant temperature of 30°C. On a daily basis, the first group is given water
containing 1 mg/mL of sugar; the second is given water containing 2 mg/mL
of sugar; and the third is given water containing 3 mg/mL of sugar. After four
weeks, the average length of the flies in each group is determined.
Which factor is the independent variable in this experiment?
A. Number of flies in a group
B. Average length of flies in a group
C. Concentration of sugar in the water
D. Temperature of the incubator

Answers

Answer 1

Answer: Average length of flies in a group is the right answer, I did it.


Related Questions

*PLEASE ANSWER !!! THANK YOU*
Which of the following statements describes a mid-intertidal zone?

a.) zone at depths of 13,000 to 20,000 feet that resembles a bottomless pit of complete darkness

b.) one of the four vertical sections of the intertidal zone regularly covered with water

c.) the area of highest elevation in ocean tidal zones

Answers

Answer:

I believe its b.

Explanation:

Most likely would be b

Which describes the relationship between human beings and the Earth system?
A. Human actions affect the Earth system only minimally and temporarily.
B. Human actions are influenced by the Earth system but do not affect it.
C. Humans are a part of the Earth system, and their actions affect its parts.
D. Humans are independent of the Earth system.

Answers

The correct option that give the relationship that exist between earth system and human being is that : (Humans are a part of the Earth system, and their actions affect its parts.)

Humans being has great effect on the quality as well as the availability, and distribution of Earth's water, this  happens through the modification of streams as well as lakes, and groundwater.

Humans can be regarded as part of the biosphere, and the activities of  human  have great impacts on all of Earth's systems.

The activities of humans have brought some  alterations in  the biosphere in a significantly way these can be seen from  changing as well as  destroying natural habitats with this activities, the extinction of many living species has been caused.

Actions of human  affect the Earth system not only minimally because we can see the green house effect and this effect has been with us now for long Human actions could be influenced by the Earth system  and vice versa but human actions  affect it.

Humans can not be said to be an independent of the Earth system because human is part of the biosphere, which is part of the earth system

Therefore, the correct option here is option "c"

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What is the ratio of the parental cross between Gg x gg

Answers

Answer:

Answer in explanation below!

Explanation:

I used a punnett square to figure this out!

phenotypic ratio ( meaning how it will look ) = 1 : 1  ( Gg = 50% & gg = 50% )

genotypic ratio ( the allele combo ) = 1 : 1  ( Gg = 50% & gg = 50% )

I hope this helps, good luck!

NEED ASAP BIOLOGY 50 POINTS

Answers

Answer:

1. carbohydrates

2.nucleic acid

3.proteins

4.lipids

5.nucleic acid

6.proteins

7.lipids

8.carbohydrates

Explanation:

Which best describes tA male cardinal's red color is an example of a trait affected by natural selection. The females of the species choose mates based on the vibrant colors of the males' feathers. If females begin using different criteria than feather color when they choose mates, what would most likely happen to the color of the male cardinals over time? he fossil record?

Answers

Question:

A male cardinal's red color is an example of a trait affected by natural selection. The females of the species choose mates based on the vibrant colors of the males' feathers. If females begin using different criteria than feather color when they choose mates, what would most likely happen to the color of the male cardinals over time?

Answer:

Feather color loses importance in sexual selection and becomes disadvantageous for males. There is a decrease in red color variation among males.

Explanation:

In cardinal species, females choose males to mate according to their vibrant red color. The redder the male is, the better genetic charge it has, and the better choice for mating it becomes.

Red feather color is a trait that reflects the genetic quality of males. So individuals with the most vibrant red color express better capabilities of finding food, competing for resources, competing for males, among others, are the best option to mate and to ensure successful offspring.

The brightest or most vibrant males are in red, the better chances they have to mate and pass their genes to the following generations. So the organism spends energy and resources to produce more vibrant colors to enhance mating chances.

However, if females begin using different criteria than feather color when they choose mates, color production stops making sense. What is even more, it becomes more disadvantageous for males because females do not use color for their choices, males spend energy when producing it, and the redder the males are, the more chances to be predated they have. So basically, males´ feather color loses importance. The selection pressure in males turns to the evolution of another trait. The shade variation of red feathers will decrease over time.

With over 600 muscles in the body we are able to do an array of motions. What is the difference between what big muscles, like the four in the quadriceps, can do and what those like the thirty in our hands can do?​

Answers

The amount of nerves used to control the muscles which takes a lot of brain work

The functions of each muscle depend on its location and ability to perform specific work. For example, the masseter muscle is the strongest muscle in humans which is present in the jaw.

What is the significance of muscles?

The significance of muscle is understood by the fact that these structures are linked to bones, internal organs, and blood vessels. These components are responsible for movement by their contractions.

According to the context of this question, the muscles in the shoulder region are the four rotator cuffs which significantly include the supraspinatus, infraspinatus, teres minor, and subscapularis. The four muscles in the quadriceps have to perform a different function which includes heavy weightlifting, so, they have to strongest enough.

While the thirty muscles present in the hand can do numerous functions with different levels of intensity. These muscles are not too strong as compared to masseter but are superior.

Therefore, the functions of each muscle depend on its location and ability to perform specific work.

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Someone answerr these plssss
An organism is living in a rapidly changing environment. Sexual reproduction is
advantageous to an organism in this situation because- *

Answers

Answer:

I'm pretty sure it's A

Explanation:

................

Which of the following is NOT true about homeostasis?

A - Maintaining homeostasis requires that all body systems work together.
B - Long periods of stress can disrupt homeostasis.
C - Body temperature is a factor of homeostasis.
D - Only the nervous and endocrine systems are involved in maintaining homeostasis.

Answers

i think it might be a

vinosum is most closely related to which organism

Answers

Answer:

Radiodurans, thermophilius

Explanation:

A Vinosum is most closely associated with the thermophilus and the Radiodurans.

What do you mean by Vinosum?

Vinosum may be defined as a gram-negative bacteria which is rod-shaped in structure, anoxygenic in nature, and categorized under purple-sulphur bacteria.

Vinosum bacteria are thermophilus which means they survive at relatively high temperatures. They are halotolerant which means they survive in extremely high salt concentrations.

Therefore, a Vinosum is most closely related to the thermophilus and the Radiodurans.

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if a mother monster is
and has , and the father monster is and has

Answers

Answer:

Then the baby monster is and has

Explanation:

#SimpleMath

#RealFacts

PLS HELP! A single celled organism that lives in extremely hot or acidic environment with no membrane-bound organelles most likely belongs to

1. archaea, bacteria, and eukarya
2. archaea and bacteria
3. archaea only
4. bacteria only​

Answers

Answer:

i thinks its 4 but i am not that positive

A single celled organism that lives in extremely hot or acidic environment with no membrane-bound organelles most likely belongs to archaea, bacteria, and eukarya. Thus, the correct option is 1.

What are Single-celled organisms?

A unicellular organism is also known as a single-celled organism. It is an organism which consists of a single cell, unlike a multicellular organism that consists of multiple eukaryotic cells. Organisms fall into two major categories including prokaryotic organisms and eukaryotic organisms.

All of the life forms can be divided into three major domains, based on the type of cells of the organism into

a. Bacteria: These cells do not contain a nucleus.

b. Archaea: These organisms do not contain a nucleus, however they have a different cell wall from bacteria.

c. Eukarya: These cells contain a well-defined nucleus

Therefore, the correct option is 1.

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Which cell replicates via meiosis?(1 point)

sperm cell

heart cell

skin cell

red blood cell

thanks!!

Answers

Answer:

Sperm cell

Explanation:

Because it is a reproductive cell and in one of the stages of foetus growth is meiosis so this cell undergoes meiosis to pass that stage

Meiosis is the process by which cells divide into four haploid daughter cells.Sperms are the cells that replicates via meiosis. Option A is correct.

Meiosis:

It is the process by which cells divide into four haploid daughter cells.

The daughter cells contains half of its parents chromosomes.The daughter cells are genetically different from the parent cells.It is occur in the germ cells of the organisms to produce gametes like sperm and ovum.

Therefore, sperms are the cells that replicates via meiosis.

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True or False: You will have 16 offspring in a dihybrid cross.

Answers

Since each parent has four different combinations of alleles in the gametes, there are sixteen possible combinations for this cross. So true

Answer:

true this is the answer for this question

If an organism suddenly appeared after being extinct what is going on?

Answers

Answer: The organism probably evolved to become the same animal again, or the animal was never actually extinct

Explanation:

Answer: it probably found another habitat to live in with less human interaction, more access to food and water. With a higher chance of survival rate.

Explanation:

Since its inception, the theory of evolution has been the subject of frequent debate. Those who oppose evolutionary theory often point to gaps in the fossil record in an attempt to discredit the theory. Which statement would be the best counter argument as to why the fossil record can be relied upon to support evolution?

A. The fossil record provides evidence that extinct species only fossilized during certain geological eras.
B. The fossil record provides evidence that extinct species are genetically identical to current species.
C. The fossil record provides evidence of many different types of organisms, since most species fossilize well.
D. The fossil record provides evidence of many transitional organisms that show relationships between species.

Answers

Answer:

D. The fossil record provides evidence of many transitional organisms that show relationships between species.

Explanation:

Evolution is the process of changes in characteristics of an organism as time passes. In order for fossil records to support this, there must be some linkage between species to species. Therefore the correct answer is D. The fossil record provides evidence of many transitional organisms that show relationships between species..

Since its inception, the theory of evolution has been the subject of frequent debate, and the fossil record can be relied upon, the fossil record provides evidence of many transitional organisms that show relationships between species, which is in Option D.

What is the significance of the fossil record?

The fossil record tells about the ancestors and explains the diversity of life on Earth over thousands or millions of years ago. It is commonly found in sedimentary rock formations and provides information about how organisms lived thousands or millions of years ago.

Hence, since its inception, the theory of evolution has been the subject of frequent debate, and the fossil record can be relied upon, the fossil record provides evidence of many transitional organisms that show relationships between species, which is in Option D.

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Radiation is a method of thermal energy transfer that moves-


Helppplp plss I’ll choose as brainliest

Answers

Answer:

-heat

Explanation:

Radiation happens when heat moves as energy waves, called infrared waves, directly from its source to something else. This is how the heat from the Sun gets to Earth. In fact, all hot things radiate heat to cooler things. When the heat waves hits the cooler thing, they make the molecules of the cooler object speed up.

Good luck!!

Answer:

Explanation:

Radiation is a method of heat transfer that does not rely upon any contact between the heat source and the heated object as is the case with conduction and convection. Heat can be transmitted through empty space by thermal radiation often called infrared radiation. This is a type electromagnetic radiation .

Although most solutes that enter or exit the cell are relatively small (inorganic ions, sugars, or amino acids), occasionally the movement of larger molecules into or out of the cell is required. For example, certain cells secrete proteins, such as pancreatic cells that secrete insulin. Other cells take up food particles or even entire cells, such as lymphocytes in your immune system.Transport of such large materials into and out of the cytosol cannot be accomplished by transport proteins in the plasma membrane. The transport of large molecules is accomplished by bulk transport via exocytosis and endocytosis. Like other forms of active transport, bulk transport requires an input of energy.Before beginning this tutorial, watch the segment of the Membrane Transport animation on exocytosis and endocytosis. Observe the role that vesicles play in transport of materials into and out of the cell.Part A - Exocytosis and endocytosisSort the phrases into the appropriate bins depending on whether they describe exocytosis, endocytosis, or both.ResetHelpincreases the surface area of the plasma membranetransported substances never physically cross the plasma membranesecretes large molecules out of the celldecreases the surface area of the plasma membranerequires cellular energyrequires fusion of vesicles with the plasma membrane Selectedexocytosisforms vesicles from inward folding of the plasma membraneendocytosisrequires fusion of vesicles with the plas

Answers

Complete question:

Although most solutes that enter or exit the cell are relatively small (inorganic ions, sugars, or amino acids), occasionally the movement of larger molecules into or out of the cell is required. For example, certain cells secrete proteins, such as pancreatic cells that secrete insulin. Other cells take up food particles or even entire cells, such as lymphocytes in your immune system. Transport of such large materials into and out of the cytosol cannot be accomplished by transport proteins in the plasma membrane. The transport of large molecules is accomplished by bulk transport via exocytosis and endocytosis. Like other forms of active transport, bulk transport requires an input of energy. Before beginning this tutorial, watch the segment of the Membrane Transport animation on exocytosis and endocytosis. Observe the role that vesicles play in the transport of materials into and out of the cell.

Part A

Sort the phrases into the appropriate bins depending on whether they describe exocytosis, endocytosis, or both.

a. decreases the surface area of the plasma membrane

b. requires fusion of vesicles with the plasma membrane

c. forms vesicles from inward folding of the plasma membrane

d. transported substances never physically cross the plasma membrane

e. increases the surface area of the plasma membrane

f. requires cellular energy

g. secretes large molecules out of the cell

Answer:

a. -->  ENDOCYTOSIS

b. -->EXOCYTOSIS

c.--> ENDOCYTOSIS.

d. --> BOTH

e. --> EXOCYTOSIS

f. --> BOTH

g. --> EXOCYTOSIS

Explanation:

To answer the question, first, we need to know the meaning of endocytosis and exocytosis.

Endocytosis and exocytosis process refers to molecules transport mediated by vesicles. It occurs from and into the cell and needs energy to happen because it is active transport.

Cells can export many substances in vesicles or vacuoles that originate in specific organelles like, for instance, the Golgi complex. Organelles form new vesicles or vacuoles with substances destined for exportation and send them forward to the membrane. When they get there, they fuse to the cell membrane, releasing all their content to the extracellular space. When fussing, the vesicle membrane increases the size of the cellular membrane. This process is exocytosis, and its direction is always from the inside of the cell to the outside. But there is also another vesicle-mediated transport that occurs from the exterior to the cell interior, the endocytosis process. It happens when the cell imports material from the extracellular space through the invagination of the membrane, producing a new vesicle that surrounds the incoming material. The invagination ends in strangulation of the membrane, releasing the new vesicle in the cytoplasm. This process decreases the size of the cellular membrane because it uses part of it to engulf the material.

Now that we know these concepts, we can sort the phrases into the appropriate bins.

a. decreases the surface area of the plasma membrane. ENDOCYTOSIS, because the new vesicles are formed using the cell membrane

b. requires fusion of vesicles with the plasma membrane. EXOCYTOSIS, because vesicle needs to fuse to the cell membrane to release the carrying material

c. forms vesicles from inward folding of the plasma membrane. ENDOCYTOSIS. Refers to the invagination process of the cell membrane. It only occurs during endocytosis

d. transported substances never physically cross the plasma membrane. BOTH. Substances are too big or too many to be physically transported through the cell membrane

e. increases the surface area of the plasma membrane. EXOCYTOSIS. Occurs when the vesicle fuses the cell membrane to release the content to the exterior.  

f. requires cellular energy. BOTH of them, because they are active transport.

g. secretes large molecules out of the cell. EXOCYTOSIS. The direction is from the interior of the cell to the exterior. These are exportation molecules.

Which list places the layers of the sun in the correct order from innermost to outermost?

Corona, photosphere, chromosphere
Photosphere, convective zone, radiative zone
Radiative zone, convective zone, chromosphere
Radiative zone, corona, convective zone

Answers

Answer:

The inner layers are the Core, Radiative Zone and Convection Zone. The outer layers are the Photosphere, the Chromosphere, the Transition Region and the Corona.

Answer:

radiative, convective, chromosphere

Explanation:

it is

Evolution is a useful theory because it helps us:
(A) make predictions
(B) survive and reproduce
(C) establish the genetic code
(D) form questions

Answers

Answer: C

Explanation:

If we know how many thymine bases there are in a piece of DNA, we can calculate the number of the following bases:

a) Adenine
b) Cytosine
c) Guanine
d) Uracil

Answers

Answer:

in dna the T and A always go together so the answer is ademine

Geologists were examining an area in Africa called the Great Rift Valley. Which geologic event MOST likely caused the formation of the valley?
O A impacts from meteors
O B. collision of tectonic plates
O c. diverging continental plates
O D. movement of glaciers

Answers

Answer:

c. diverging continental plates

Explanation:

in prokaryotes certain proteins act to regulate genes by binding dna, what could be the effect of these binding proteins?

Answers

Answer:

This question lacks options, the options are:

A. They may act to turn on gene transcription.

B. They may act to turn off gene transcription.

C. They may become added to DNA, and then be transcribed.

D. They may remove a gene from DNA.

E. They may alter the nucleotide sequence in a gene.

Options A and B are the answers.

Explanation:

Prokaryotes regulate gene expression at the transcriptional level. Gene expression is the process whereby living organisms synthesize useful products such as protein from a gene. Prokaryotes such as bacteria control the expression of their genes via proteins that bind to DNA called REGULATORY PROTEINS.

These regulatory proteins also known as TRANSCRIPTION FACTORS, act to regulate genes by binding DNA. The binding of DNA either prevents or promote the binding of RNA polymerase in order for transcription to occur.

- Regulatory proteins which may act to inhibit transcription of DNA by turning off gene are called REPRESSORS.

- Regulatory proteins which may act to promote transcription of DNA by turning on gene are called ACTIVATORS.

Dan Perkins was a policeman who was able to run a short distance in a very short time in order to escape the danger of a fire. What molecule allowed him to have a burst of instant energy to make that sprint?​

Answers

Glucose provides energy that can quickly be used to generate ATP if needed by muscle cells. Starches have to be hydrolyzed to make glucose molecules so they would be useful for endurance situations

Deoxyribose (sugar), a phosphate group, and a nitrogen base make up these repeating units of DNA: * Adenine, Nucleotides, Guanine or sMitochondria ​

Answers

Answer:

in DNA. Adenine (A) and guanine (G) are double-ringed purines, and cytosine (C) and thymine (T) are smaller, ... The nucleotide is named according to the nitrogenous base it contains. (a) Each DNA nucleotide is made up of a sugar, a phosphate group ... A figure showing the structure of ribose and deoxyribose sugars.

Explanation:

!PLEASE HELP ASAP! what is the half-life of the radioactive isotope? what mass of the radioactive isotope will be left after three(3) half-lives?

Answers

The half-life of a radioactive isotope is the amount of time it takes for one-half of the radioactive isotope to decay. The half-life of a specific radioactive isotope is constant; it is unaffected by conditions and is independent of the initial amount of that isotope.

B. The wave's amplitude is equal to half of this height. What is the
amplitude?

Answers

Shawty school don’t matter ‼️

When the wave's amplitude is equal to half of this height (H), the wave's amplitude is 0.5 H.

What is amplitude of waves?

The amplitude of waves is the maximum height attained by the wave. The amplitude of a wave is the maximum vertical displacement of the wave.

When the wave's amplitude is equal to half of this height, the amplitude is calculated as follows;

Let the height = H

Amplitude = 0.5 H

Thus, when the wave's amplitude is equal to half of this height (H), the wave's amplitude is 0.5 H.

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In cherry tomatoes, red color (R) is dominant to yellow color (r). If two heterozygous plants are crossed, what percentage of the offspring will be yellow?

Answers

Answer:

50

Explanation:

If you cross two heterozygous tomato plants, you get four base genotypes of (Respectively,) RR, Rr, Rr, and rr. That makes your percentage A. 50%.

Explain h0mozygous and heter0zygous?

If a dominant red fruit (RR) plant is crossed with a recessive over yellow fruit (rr), then the phenotype will be red fruit and the genotype Rr. It is a case of complete dominance.

In diploid organisms (2n), an individual is homo-zygous when it carries two copies of the same gene variant (i.e., the same allele).

Moreover, an individual is heter0zygous when it carries two different alleles for the same gene locus.

In complete dominance, the dominant allele completely masks the expression of the recessive allele in heter0zygous individuals.

Thus, That makes your percentage A. 50%.

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Describe the impact of human activities on natural resources;
consider energy, mineral, forest, marine, over population and over fishing.

Answers

Answer:

As the human population has grown, the need for more land has caused an increase in the cutting down of forest lands for habitation and farming. The result has been an increase in soil erosion, an increase in species extinction from habitat loss, and a reduction of oxygen supplied by the trees, as well as lower amounts of carbon dioxide being removed from the atmosphere. Industrial and personal use of fossil fuels has dramatically increased the amount of air pollution in the atmosphere while systematically using up the supply of the non-renewable resources such as coal, oil and natural gas

Explanation: Hope this helps! ^^

Explanation:

GIVING BRAINLIEST!!!

There has been an increase in the number of foxes in the area. What type of environmental change is this for rabbits?

A) Pollution
B) Climate change
C) Reduced space
D) Increased predators

Answers

Answer:

D increased predators

Explanation:

Foxes are predators of rabbits, Which means the rabbits will be indangerd

It’s D increased predator

Which of the following statement about gene mutation is not correct. It:

a) Can be inherited
b) May result in a change in the number of bases that make up the gene
c) Always results in a change in the protein for which the gene codes
d) May result in a change in the order of bases that make up the gene

Answers

Answer:

c) Always results in a change in the protein for which the gene codes

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Write the slope intercept equation for the following table I do not understand this may I get help? I'll give you brainliest or something just help. I need help understanding problem number 2 Leaders of the ____________ believed that each individual was responsible for his or her own salvation and that sin was avoidable.a.Great Revivalc.First Great Awakeningb.Second Great Awakeningd.None of the abovePlease select the best answer from the choices providedABCDplz help will give brainliest if I had 24 apples and 2 friends over with me, and they want to split them all what do I do? Mia had $32. Then she started to receive $5 a week as an allowance. She plans to save all of her money for a bicycle and draws a graph of her planned savings. Mia lets x represent the number of weeks she has received her allowance, and y represent her total amount of money. Which of the following ordered pairs is on Mia's graph?A. (2,64)B. (1 ,32)C. (4 , 52)D.(6 , 30 ) Can someone please help me with these two questions? If JG=JF,GD=13, and mCD=136, find each measure. 1 Why did labor unions struggle to get their demands met in the mid and late 1800s? A The government aided employers in their strikebreaking activities and labor did not have the right to collectively bargain. B The competing demands of their diverse members made it difficult to create change C The American people sided with employers over the strikers D They focused too much on transforming society rather than securing basic rights and protections for workers. Find the value of x? 2x + Y=8Me podran ayudar a resolverla por favor Compare and contrast the advantages and disadvantages of the windows, apple and linux operating systems? Select all the expressions that are solutions to 9 = 1/3x What expression is equivalent to 16 + 2 36? Which data set is the most spread from its mean? 0 14, 26, 24, 28 022, 16, 18, 36 O 22, 28, 20, 22 021, 19, 27, 25 Qu tipo de informacin utiliza el artculo para apoyar sus afirmaciones?AOpiniones de expertosBDocumentos histricosCitas bibliogrficasDDatos cuantitativos HELP I HAVE THIS ASSIGHMENT DUE IN 30 MINUTES I have to re ask this but pls help me I don't have a lot of time In this arithmetic sequence 3, 8, 13, 18, ... which term has the the value 123?2524617613