A student made a model of a cell. First, she filled a clear plastic bag with gelatin.
Then, she added a rubber ball.
What are two limitations of the student's cell model?

A. The model is not as easy to see and hold as a real cell is.

B. The model does not show that cells can contain smaller structures inside
them.

C.The model does not show how a real cell gets the energy it needs to live.

D.The model is made up of materials that are different from those found in
real cells.

Answers

Answer 1
B) the model does not show that cells can contain smaller structures inside.

This is true because only a rubber ball was added, indicating that only a nucleus or any one organelle is present in a cell. However, the cell contains more than one organelle from the nucleus, mitochondria, Golgi apparatus, smooth and rough endoplasmic reticulum, ribosomes, and more.

Another possible answer would be D since they model does not show the process of cellular respiration where cells undergo this process to create ATP in the mitochondria.

Related Questions

Food proteins are used most efficiently when we Multiple Choice consume a very-low-kilocalorie diet. consume enough carbohydrates and fats to meet our kilocalorie needs. consume a low-carbohydrate diet. consume them with alcohol.

Answers

Food proteins are used most efficiently when we : ( B ) consume enough carbohydrates and fats to meet our kilocalorie needs

Our Kilocalorie needs

Our kilocalorie needs vary between male and females. An average male needs about 2700 kcal per day while a woman needs about 2200 kcal per day to function properly. In order to meet this kilocalorie needs we have to consume the essential nutrients such as carbohydrates and fats and proteins.

Hence we can conclude that Food proteins are used most efficiently when we consume enough carbohydrates and fats to meet our kilocalorie needs

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Describe the components used in the process of cellular respiration.

Answers

Answer:

Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.

Explanation:

In simple terms, what is fracking?

Answers

Answer: Fracking is drilling into earth and directing a mixture of water, sand and chemicals at a rock layer to release gas inside.

Answer:

Fracking is revolutionizing oil and gas drilling across the country.

Explanation:

I hope it helps! Have a great day!

Pan~

1.4.2 Test (CST): Computer-Scored Unit Test
Question 5 of 25
Technology can have good and bad effects. What is a bad effect of spraying

Answers

Spraying of pesticides leads to disease in human as well as in other microorganisms.

What is a bad effect of spraying?

Spraying of pesticides greatly affected the animals and aquatic life. Some pesticides wash away with rain and add to the water bodies which is responsible for killing of aquatic animals. This spraying also kills some useful microorganisms that are present in soil.

So we can conclude that spraying of pesticides leads to disease in human as well as in other microorganisms.

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Where does photosynthesis happen in algae and plants

Answers

Photosynthesis occurs in the chloroplast of algae and plants. Details about photosynthesis can be found below.

What is photosynthesis?

Photosynthesis is the process whereby green plants and algae produce food molecules by themselves using energy from sunlight.

Photosynthesis occurs in a compartment of a cell called chloroplast and it harbors a pigment that traps sunlight called chlorophyll.

Therefore, photosynthesis occurs in the chloroplast of algae and plants.

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How does water enter the atmosphere? a. liquid water evaporates from lakes when heated by the sun. b. frozen water sublimates from ice and snow. c. liquid water is lost from tree leaves during evapotranspiration. d. all of the above. please select the best answer from the choices provided a b c d

Answers

Answer:

d

Explanation:

Water enters the atmosphere by :

liquid water evaporates from lakes when heated by the Sun

frozen water sublimates from ice and snow

⇒ liquid water is lost from tree leaves during evapotranspiration

Answer:

d. all of the above

Explanation:

tried on ed and it was correct :)

What of the following will occur after fire burns down 100 acres of a forest?
A. Adaptive Radiation
B. The forest cannot recover without human intervention
C. Primary Succession
D. Secondary Succession

Answers

Answer: D

Explanation: fires help fertilize the soil allowing secondary succession. Secondary succession is when an area has been destroyed is repopulated anew. The seeds underground after a forest fire will now have new rich soil to grow on. Plus 100 acres is like nothing at all.

Which of the following is the function of
an enzyme?
A. builds muscle and bone
B. speeds up chemical reactions
C. creates stem cells
D. builds proteins

Answers

[tex] \underline{\boxed{ \huge \pink \star\sf{answer\pink \star}}}[/tex]

B.) speeds up chemical reactions

#KeepOnLearning

Answer:

D

just answer it ok

Bye hope it helps

Which organelle accurately completed the chart

Answers

Answer:

lysosome

Explanation:

Explain three cause and effect relationships between the human activities and the measurable changes in the Earth system represented in the Understanding Global Change model

Answers

Answer:

Humans are gradually altering the climate and the earth's temperature through burning fossil fuels, destroying forests, and rearing animals.

Explanation:

This significantly increases the amount of greenhouse gases already present in the atmosphere, increasing the greenhouse effect and contributing to global warming.

Climate change is mostly caused by the greenhouse effect. Some gases in the Earth's atmosphere act as greenhouse glass, trapping heat from the sun and preventing it from escaping into space, causing global warming.

Hope it helps;

Use the following table to answer the question:


codons found in messenger rna
second base
first base u c a g third base
u phe
phe
leu
leu ser
ser
ser
ser tyr
tyr
stop
stop cys
cys
stop
trp u
c
a
g
c leu
leu
leu
leu pro
pro
pro
pro his
his
gln
gln arg
arg
arg
arg u
c
a
g
a ile
ile
ile
met thr
thr
thr
thr asn
asn
lys
lys ser
ser
arg
arg u
c
a
g
g val
val
val
val ala
ala
ala
ala asp
asp
glu
glu gly
gly
gly
gly u
c
a
g


this table shows the codons found in messenger rna. using this information, what sequence of nucleotides in the template strand of dna could code for the polypeptide sequence val-asp-ser?
guu-gau-agc
caa-cta-tcg
gtt-gat-agc
caa-cua-ucg

Answers

Nucleotides from the DNA template strand complement the mRNA's codons. These codons code for amino acids. Option B is correct. CAA - CTA - TCG

What are nucleotids?

Nucleotides are monomers composed of a sugar molecule, joined with a phosphate group and a nitrogenated base.

Several nucleotides joint by their extremes compose the nucleic acids.

Nucleotides have a certain order or sequence in nucleic acids, which is significant since these sequences carry biological information neccesary to carry out cellular functions.

What are codons?

Codons are short sequences of three nucleotides that carry genetic information needed to build the protein. These units determine which amino acids are added to the growing chain during the assembly.

More than one codon might code for the same amino acid.

Different sequences of three nucleotides -codons- might code for a different amino acid. This means that the resulting proteins will not be the same, and they will accomplish different functions.

What are the template and coding strand?

When DNA molecule unwinds to be transcripted, two single strands get separated,

The coding strand

It receives that name because it is the sequence that codes for each amino acid composing the proteins.

When referring to the coding strand, we are talking about the sequence that turns out to be the same as the mRNA that results from the transcription of the same DNI segment -switching bases T for U-.

The template strand -complementary strand-

This is the one that is used during transcription to synthesize mRNA. The template strand is the one that is going to be complemented by the mRNA.

To get to know the sequence of nucleotides in the template strand that code for the polypeptide sequence val-asp-ser, firts we need to know which codons code for these amino acids.

1)

Amino acid            Codon

Val                          GUU, GUC, GUA, GUG

Asp                         GAU, GAC

Ser                          UCU, UCC, UCA, UCG, AGU, AGC

These are all the possible codons in mRNA that might code for these amino acids. Now, we need to identify their complementary bases on the template strand.

2)

mRNA        Template strand

GUU                  CAA

GUC                  CAG

GUA                   CAT

GUG                  CAC    

GAU                   CTA

GAC                   CTG    

UCU                   AGA

UCC                   AGG

UCA                   AGT

UCG                   AGC

AGU                   TCA

AGC                   TCG  

The column of the right shows all the possible nucleotides that might complement the mRNA codons. There are several combinations. Now, we need to choose among the options the correct combination.

3)

Options A and  D  ⇒  guu-gau-agc and caa-cua-ucg

These are not the correct options since they carry uracils instead of thymines. Remember that DNA molecules have thymine, and RNA molecules have uracil.

Option C ⇒ gtt-gat-agc

This is not correct since these sequences do not complement the mRNA codons.

Option B ⇒ caa-cta-tcg

This is correct. You can find these nucleotide sequences among the options written before for the template strand.

Option B) CAA - CTA - TCG is the correct one.

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Answer: CAA - CTA - TCG is the correct one.

Explanation:

what change do you observe in three seed if you use boiled and cooled water of tap water in breaker​

Answers

Not sure but hope this helps!
Multimedia. Water boils in a flask, and later the flask is
stoppered and removed from the hot plate. When ice
water is poured over the flask, the water begins to boil.
When the flask is cooled, the pressure of the water
vapor decreases, which decreases the boiling point of
the water.

Having major trouble with this matching section, and I keep getting it wrong over and over again. Nearly at my wit's end and I really need help

Answers

Answer:

number 4 is puncture

five is amputation

six is laceration I think

number 2 is incision

that's all I know

PLEASE I WILL MARK BRAINLIST

Answers

Answer:

B.

Explanation:

it belived to be one of the earliest chemical

pesticide.

Hope it's Help

which answer choice is a “product”?

Answers

Answer:

D.A substance that is produced during a chemical reaction

18. identify the three conditions under which ionic reactions can run to completion, and write an equation for each.

Answers

Formation of a gas, formation of a precipitate and formation of a slightly ionized product are the cases for the completion of ionic reactions.

What are the three conditions under which ionic reactions completed?

The three conditions under which ionic reactions can run to completion i.e. formation of a gas, formation of a precipitate and formation of a slightly ionized product.

K+(aq) + Br−(aq) + Ag+(aq) + C2H3O2−(aq) → K+(aq) + C2H3O2−(aq) + AgBr(s)

Mg2+(aq) + SO42−(aq) + Ba2+(aq) + 2NO3−(aq) → Mg2+(aq) + 2NO3−(aq) + BaSO4(s)

So we can conclude that formation of a gas, formation of a precipitate and formation of a slightly ionized product are the cases for the completion of ionic reactions.

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1.The expansion of the Mexican wolf population in Arizona raises the possibility of the formation of a hybrid zone with coyotes along the boundaries of their range. Which statement, if true, would most likely result in the formation of a stable hybrid zone?

A.
Coyote-wolf hybrids are less fit in the hybrid zone than either parental species.

B.
Coyote-wolf hybrids are more fit in the hybrid zone than either parental species.

C.
Coyote-wolf hybrids are less fit outside the hybrid zone than either parental species.

D.
Coyote-wolf hybrids are more fit outside the hybrid zone than either parental species.


2.How would a drought in Arizona most likely affect the population density of the Mexican wolf population?

A.
The population density would decrease because insufficient abiotic factors are available to support the population.

B.
The population density would decrease because insufficient biotic factors are available to support the population.

C.
The population density would increase because sufficient abiotic factors are available to support the population.

D.
The population density would increase because sufficient biotic factors are available to support the population.

Answers

The most likely result in the formation of a stable hybrid zone is that Coyote-wolf hybrids are more fit in the hybrid zone than either parental species.

What is evolutionary adaptation?

Evolutionary adaptation refers to the adaptive features of a population in a given environment.

Moreover, the statement 'the population density would decrease because insufficient abiotic factors are available to support the population' is correct about a drought in a given environment.

In conclusion, the most likely result in the formation of a stable hybrid zone is that Coyote-wolf hybrids are more fit in the hybrid zone than either parental species.

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A human baby is born with one X chromosome and one Y chromosome.what must be true about this baby

Answers

Answer:

the baby is a male

Explanation:

if it were a female the it would be xx

Heeeeelllppppp

select the correct answer from the drop-down menu.
zoe is writing a memoir about the first time she tried beets. choose the best way to complete the draft to show a description of the setting.

my dad used to say there aren't really foods he doesn't like, just foods he hasn't liked yet. i'm inclined to agree with him because there's a clear line of demarcation in my life: days of beet disdain and beet delight.
it was an ordinary day . the lunch crowd buzzed as i surveyed the menu, until i landed on a list of appetizing ingredients: bibb lettuce, asparagus, goat cheese, pistachios, and . . . yellow beets with a lemon dill vinaigrette. dressing on the side and hold the beets. that was my first inclination.

Answers

According to the context of the text, it can be inferred that the correct option is "When I gathered the courage to try beets for the first time" because it coincides with the information in the text.

What is the text about?

The text is about the author's father's reflection on the taste for some foods. In that specific case, the author cites that reflection to refer to the first time he ate beets.

To refer to that moment, the author refers to his father's phrase and later develops that idea by relating it to the day he ate beets. In general, he gives a brief description of what the food looks like and his reaction to the ingredients in his dish.

Note: This question is incomplete because there is some information missing. Here is the complete information:

OPTIONS

And I remember the moment as clearly now as the day it happened.When I gathered the courage to try beets for the first time.At Atwoods Care when I sat at a table for two near the door.When my dad's words truly sunk in for the first time.

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Answer:

"at Atwoods Cafe when I sat at a table for two near the door"

Explanation:

Deer are herbivores, which means
they eat plants. Which term also
means herbivore?
A. primary consumer
B. carnivore
C. producer
D. heterotroph
right 2003-2022 International Academy of Science. All Rights Reserved.

Answers

A. Primary consumer

Explanation:

Primary consumers make up the second trophic level. They are also called herbivores. They eat primary producers—plants or algae—and nothing else. For example, a grasshopper living in the Everglades is a primary consumer.

The diagram below represents changes in the types of plants growing in the same area during four different time periods. Different types of plants have been labeled for each time period. This change in plant types over time is an example of

Answers

Answer:

A. Ecological Succession

helppppppp meeeeeeeeeee

Answers

Answer:

1. d 2.c 3.A 4. B

Explanation:

Im right mate

Blood -- d) transport O2, CO2 and nutrients. Arteries -- c) carry blood away from the heart.Veins -- a) carry blood back to the heart and lungs.Cappilaries -- b) connect Arteries and veins._______________Blood helps in the transportation of oxygen , Carbondioxide and nutrients. Arteries are the vessels which carry blood away from the heart to various organs of the body. since the blood emerges from the heart under high pressure, the Arteries have thick , elastic vessels. Veins collect the blood from different organs and bring it back to the heart . They do not need thick walls because the blood is no longer under pressure, instead they have valves that ensures the blood flows only in one direction. Arteries divide into very fine vessels called Cappilaries. Which bring the blood in contact with the individual cells . These Cappilaries have one cell thick walls which help in exchanging of material between the blood and surrounding cells . The Cappilaries then join together to form veins that convey the blood away from oragn to tissue.

what is the cause of the start of dental decay

Answers

Answer:

Cavities are caused by tooth decay — a process that occurs over time. Here's how tooth decay develops:

Plaque forms. Dental plaque is a clear sticky film that coats your teeth. It's due to eating a lot of sugars and starches and not cleaning your teeth well. When sugars and starches aren't cleaned off your teeth, bacteria quickly begin feeding on them and form plaque. Plaque that stays on your teeth can harden under or above your gum line into tartar (calculus). Tartar makes plaque more difficult to remove and creates a shield for bacteria.

Plaque attacks. The acids in plaque remove minerals in your tooth's hard, outer enamel. This erosion causes tiny openings or holes in the enamel — the first stage of cavities. Once areas of enamel are worn away, the bacteria and acid can reach the next layer of your teeth, called dentin. This layer is softer than enamel and less resistant to acid. Dentin has tiny tubes that directly communicate with the nerve of the tooth causing sensitivity.

Destruction continues. As tooth decay develops, the bacteria and acid continue their march through your teeth, moving next to the inner tooth material (pulp) that contains nerves and blood vessels. The pulp becomes swollen and irritated from the bacteria. Because there is no place for the swelling to expand inside of a tooth, the nerve becomes pressed, causing pain. Discomfort can even extend outside of the tooth root to the bone.

Explanation:

I hope it helps

If an organism were to die in an environment that had no saprotrophs or detritivores, what would you expect to see if you observed the area 2 weeks later?
A. There would be nothing left, it will have completely decomposed.
B. The body would remain, and be just as it was when it died except for weathering.
C. There will be no difference as compared to an area that has saprotrophs and detritivores.
D. The body would be decomposing at about half the normal speed.

Answers

The body would remain and be exactly as it was when it died, with the exception of weathering, as you would expect to see if you visited the area two weeks later. As a result, B is the correct answer.

What are saprophytes?

An organism that feeds on dead and deteriorating organic stuff is referred to as saprophytes.

Saprotrophs are decomposers that live on or in dead organic matter and secrete enzymes and nutrients into the ecosystem. Fungi are one such example.

With the exception of weathering, which is removed by air, water, or other agents, the deceased organisms will remain the same without detrivores and saprotrophs.

Thus, the correct option is B.

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For many decades scientists thought I
molecules that carry genetic information, not DNA.
were the

Answers

Answer:

proteins in chromosomes

Explanation:

The Lorax tried talking the Once-ler out of chopping down the Truffula trees, until some event occurred. What happened that convinced the Once-ler he was right

Answers

His business failing was the reason why he was convinced that he was right to chop down the tree.

What is Chop?

This is defined as the process in which a substance such as a tree is cut down through the use of tools.

Once-ler business failed and he felt chopping down the Truffula trees will result in him having money through the sales of the resources.

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Imagine that horn color in Hodags (folkloric creatures of Wisconsin) is controlled by a single gene so that when you mate a Hodag homozygous for bright orange horns (COCO) with a Hodag homozygous for ivory horns (CICI), numerous offspring are produced, all with pale orange horns. Now consider that you cross a pale orange-horned Hodag with a pale orange-horned Hodag and get an F2. What would the outcome of the F2 generation be

Answers

"Imagine that horn color in Hodags (folkloric creatures of Wisconsin) is controlled by a single gene so that when you mate....", the outcome of the F2 generation would be outcome be 1 bright orange: 2 pale orange: 1 ivory. This is further explained below.

What is homozygous?

Generally, homozygous is simply defined as a situation in which two alleles for a given gene are present.

In conclusion, Imagine, for a moment, that you breed two Hodags with different colored horns and get an F1 offspring. Two normal alleles or two alleles with the same variation make up a homozygous genotype.

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Which organ is
primarily
responsible for
ingesting food?
A. mouth
B. heart
C. anus
D. pancreas

Answers

Answer:

a. mouth

Explanation: this shouldn't be difficult

Answer:

mouth bec we eat through mouth .

What is climate change a global worldwide problem explain in terms of Earth atmosphere’s

Answers

It will increase the amount of ground level ozone in many regions, and result in impacts of air quality.
This will cause problems for ozone standards in the future.

Hope this helps!

How do you think the process of human pregnancy is similar to that of other mammals?

Answers

Answer: they give milk to their young and they tend to hold the young in their stomach for longer times than other animals and give birth to live babies

Explanation

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edward travels 150 kilometers due west and then 200 kilometers in a direction 60 degrees north of west.what is his displacement in the westerly direction? In 2016, more than ___________ people were killed in crashes involving large trucks on Florida's roadways. A. 290 B. 150 C. 90 D. 60 America declared war on Spain after A 20 gram bullet exits the rifle at a speed of 985 m/s. the gun barrel is 0.8 m long. what was the force during the rocket's launch? What is the theme of the story of the fisherman Students in MA238 spend on average 3.75 hours a week studying (with a population standard deviation = 5.17). (i) Given this fact, describe the sampling distribution of the mean if all possible random samples of size 50 were chosen. (ii) What can you say about the mean of all the possible sample means? (iii) If 250 such samples were chosen at random and for each you calculated a 95% C.I for the mean, how many such intervals would you expect to contain the true mean? (iv) If instead you calculated a 99% C.I. for the mean, how many intervals would you now expect to capture the true mean. if f(x)=x+2x-4 and g(x) = -4x+1, what is (g-f)(x)? A x+6x-5 B. x2-2x-3 C. x-6x+5 D.-x-6x+5 A yardstick measures distance to 1/4, or 0.25, of an inch. What is the mostappropriate way to report a length measured using this yardstick? In response to reconstruction, people who believed the white race is superior to people of other races formed ___________ groups. farming white supremacy abolitionist union troop Si la palabra margarita significara perla de los moluscos cualquier caracol pequeo anacaradoPodramos decir que es una palabraA) homnima. B) sinnima.C) polismica. D) homgrafa. Solve the given inequality and graph the solution on a number line. -X/2 -3/2 = 5/2No Links: Answer this, Ill give you brainliest and I would be very appreciative.In which of the instances below would an individual NOT be able to appeal their case in a federal court?When a party has lost their case in a U.S. District CourtWhen a party has lost their case in a U.S. District CourtWhen a party has lost their case in U.S.Court of AppealsWhen a party has lost their case in U.S.Court of AppealsWhen a defendant is found guilty by jury in a U.S. District CourtWhen a defendant is found guilty by jury in a U.S. District CourtWhen the decision is handed down by the Supreme Court 5. What is the author's point of view about plastics? Uz: Analyze Theme and Language in Romeo and Juliet Question 5 of 10 Friar Lawrence feels O A. excited O B. angry O C. depressed O D. shocked by Romeo's news about being in love with Juliet. SUBMIT A high temperature reaction vessel is charged with 0.5860 mol of iron powder and 35.1 L of oxygen gas at standard temperature pressure. On heating, the iron and oxygen react according to the balanced reaction below.4Fe(s) + 3O2(g) 2Fe2O3(s)After the reaction vessel is called, and assuming the reaction goes to completion, what volume of oxygen remains? Which of the following is one of the ending compoundsduring cellular respiration?O GlucoseO MitochondriaO OxygenO Water Which of the following tells a musician to emphasize a note? sfz p ff f Describe the events that led to president johnsons call for federal voting legislation in 1965 Emanuel used the calculations below to find the product of the given fractions. (Three-fifths) (StartFraction 4 over 9 EndFraction) (Negative one-half)Step 1 StartFraction (3) (4) (negative 1) over (5) (9) (negative 2) EndFractionStep 2 StartFraction negative 12 over negative 90 EndFractionStep 3 StartFraction 12 over 90 EndFractionStep 4 StartFraction 2 over 15 EndFractionIn which step did his first error occur?step 1step 2step 3step 4 Please help!A synonym for diffusion is__.A. immigrateB. spreadC. compressionD. migration