Which of these statements is true about the oxygen revolution? A. Cyanobacteria were the first organisms to introduce oxygen into the atmosphere. B. Protocells were the first organisms to produce oxygen in water, which then escaped into the atmosphere. C. Cyanobacteria were the first organisms to produce oxygen in water, which then escaped into the atmosphere.

Answers

Answer 1

Answer:

its A trust me

Answer 2

Answer:

I believe it is (C), (Cyanobacteria were the first organisms to produce oxygen in water, which then escaped into the atmosphere.) Hope this helps(:

Explanation:


Related Questions

Which quality best describes a producer with an absolute advantage?

efficient
fast
accurate
prolific

Answers

Answer:

A

Explanation:

Trust me :)

The quality that best describes a producer with an absolute advantage is efficient.

What is a producer?

In business, a producer can be defined as a person/industry who generates and supplies goods and/or services.

Some features of producers include:

Efficiency Versatility to challenging conditionsCreative skills

Producers need to combine different labor and capital to generate a particular output, ie, a good or service.

In conclusion, the quality that best describes a producer with an absolute advantage is Efficient.

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I am generally found both inside and outside of the nucleus [in eukaryotic cells]

DNA ONLY
RNA ONLY
BOTH DNA AND RNA

Answers

Answer:

In eukaryotic cells, the cytoplasm includes all of the material inside the cell and outside of the nucleus. All of the organelles in eukaryotic cells, such as the nucleus, endoplasmic reticulum, and mitochondria, are located in the cytoplasm.

Explanation:

How do plants use chlorophyll in photo

Answers

Answer:

Chlorophyll, which resides in the chloroplasts of plants, is the green pigment that is necessary in order for plants to convert carbon dioxide and water, using sunlight, into oxygen and glucose. During photosynthesis, chlorophyll captures the sun's rays and creates sugary carbohydrates or energy, which allows the plant to grow.

Explanation:

Using the diagram above, in what direction will water flow?



into the cell


out of the cell


into and out of the cell at equal rates

Answers

Answer:

According to the diagram, where there is the highest concentration of solutes in the cytoplasm, the water will flow into the cell.

Explanation:

Taking into account a difference in solutes concentration between the extracellular and intracellular spaces, the movement of water will be from the space with the lowest concentration of solutes to the space with the highest concentration of solutes, which explains the osmosis.

In the diagram, as there is a higher concentration of solutes in the intracellular space —cytoplasm— the water will pass from the outside to the inside of the cell, due to the force generated by a concentration gradient. The movement of water will be maintained until equilibrium of solute concentrations is reached.

What are the layers of the earth​

Answers

Answer:

inner core,outer core,mantle,crust

Warrior ants have a chemical signal that tell other ants in the family not to attack. Through
natural selection these ants have_______

Answers

Answer: Mutated
Hope this helped

PLEASE HELP IM IN DESPERATE NEED OF GETTING A 100%!!!! I WILL MARK BRAINLIEST TO WHOEVER ANSWERS FIRST!!! MAYBE VENMO!


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Constructing a Device to Regulate the Release of Energy - Student Guide

Constructing a Device to Regulate the Release of Energy - Rubric



PLEASE VIEW ATTATCHMENT

Answers

What attachment? I don’t see any attachment?

3. You raise your hand in class to answer a question that the professor asked. Which
muscle type did you just use? Briefly explain your answer.

Answers

Answer:

you are using your shoulder muscle. The reason you are using this muscle is when you put your arm strait up there is no reason to use a bicep or tricep muscle.

Explanation:

Which part of the energy pyramid will we find the highest amount of toxins?
a.) level one
b.) level two
c.) level three
d.) level four

Answers

Answer:

level 3

Explanation:

Population of Rabbits based on Leg Length
Generation
Number with short Number with medium
Number with long
lege
135
155
1
2
3
97
23
22
95
150
5
18
15
13
175
180
97
A student is comparing the leg lengths of the rabbits in a population. She wonders if natural setection is occurring. She asks you to
evaluate her conclusions. Select ALL that are NOT supported by her data.
A)
The rabbits with medium length legs are the most stable and thus will out
survive the others.
B)
Medium length legs appears to be neither an advantage or disadvantage in
the current environment.
The rabbits with longer legs have a selective advantage that allows them
to survive and reproduce.
It is unlikely that evolution is occurring because none of the traits have
disappeared from the population
A predator is the likely source of natural selection in this population as the
rabbits with longer legs are more likely to escape compared with those
with the shorter legs
D)
E)

Answers

Answer:A and D

Explanation:

It’s the USA test prep question

The following data indicate that the statement "the medium rabbit leg is stable and evolution is unlikely to happen" is false. Hence, options A and D are the correct options for the statements.

What is the role of natural selection?

Natural selection selects organisms that are best suited to their environment, and these individuals multiply to increase their population size. In this case, generation after generation, the population of short-legged rabbits decreased from 23 to 13. This indicates that the small-legged rabbits were eaten by the predators, resulting in a reduction in their number. The number of middle-legged rabbits did not vary much, so they did not gain a selective advantage, but long-legged rabbits easily escaped from predators, and as a result, they rapidly increased in number, and as a result, the small-legged population declined with the increase in long-legged rabbits.

 

Hence, the medium leg is stable and evolution is unlikely" is false. Hence, options A and D are the correct options for the statements.

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The question is incomplete, the complete question is the below,

Number with short legs (Generation 1 to 6) =23, 22, 20, 18, 15, 13

Number with medium legs (Generation 1 to 6) =97, 98, 95, 97, 96, 97

Number with long legs (Generation 1 to 6) =135, 155, 160, 163, 175, 180

A)The rabbits with medium length legs are the most stable and thus will out survive the others.  

B) Medium length legs appears to be neither an advantage or disadvantage in the current environment.

C) The rabbits with longer legs have a selective advantage that allows them to survive and reproduce.

D) It is unlikely that evolution is occurring because none of the traits have

disappeared from the population.

E) A predator is the likely source of natural selection in this population as the rabbits with longer legs are more likely to escape compared with those with the shorter legs.

Please dont answer to my question if you dont have an answer
Here is the Homo sapiens amylase alpha 1A mRNA sequence obtained from an individual incapable of digesting starch.

AUGAAGCUCUUUUGGUUGCUUUUCACCAUUUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

Give the sequence of the first 10 amino acids in the protein (translate the first 30 nucleotides in the coding sequence). Use the full names for each amino acid.

Answers

Answer:

AUG - methionine

AAG - lysine

CUC - leucine

UUU - phenylalanine

UGG - tryptophan

UUG - leucine

CUU - leucine

UUC - phenylalanine

ACC - threonine

AUU - isoleucine

Explanation:

Break the mRNA sequence into codons of three nucleotides each and identify what amino acid codes with each codon.

UAA is a stop codon and signifies the end of translation so any nucleotides after it will not be translated.

Hope that helps.

Pls answer yall thanks

Answers

Answer:

dkdkdjdjmdm111bsdkdkdjjdjsjs

Use the drop-down menus to complete each sentence.


are organisms that contain more than one cell with membrane-bound organelles and a nucleus.
Organisms that contain only one cell and do not contain a nucleus or membrane-bound organelles are known as
.

Answers

Answer:

- Eukaryotes are organisms that contain more than one cell with membrane-bound organelles and a nucleus.

- Organisms that contain only one cell and do not contain a nucleus or membrane-bound organelles are known as prokaryotes.

Explanation:

According to their structural and functional complexity, organisms can be classified into eukaryotes and prokaryotes.

Eukaryotic organisms are formed by cells that have a true nucleus -where DNA is located- and specialized structures called organelles, with a system of endomembranes that compartmentalize the intracellular space. These organisms are usually pluricellular, given the ability of eukaryotic cells to group together to form tissues. Prokaryotic organisms are single cells, lacking a nucleus - genetic material is scattered in the cytoplasm - and do not possess organelles.  The prokaryotic cells that form these organisms are incapable of binding together, so they do not form tissues.

Some unicellular organisms are prokaryotic cells, like some parasitic microorganisms, such as amoebas.

Answer:

1)eukaryotes

2)prokaryotes

Explanation:

just took it on edge(:

Why is the transfer of energy essential to living organisms?

Answers

Answer:

All living organisms need energy to grow and reproduce, maintain their structures, and respond to their environments. Metabolism is the set of life-sustaining chemical processes that enables organisms transform the chemical energy stored in molecules into energy that can be used for cellular processes.

Explanation:

Hope it helps :)

Have a good day/night

Brainliest pls

Cellular respiration occurs in a series of steps. If pyruvate enters the mitochondrion,
how much total energy can we assume will be produced?
8 molecules of pyruvic acid
38 molecules of ATP
2 molecules of ATP
14 molecules of oxygen

Answers

Answer:8

Explanation:

Pyruvic acids are transformed by oxidative decarboxylation into acetyl-CoA, molecules of NADH, and molecules of CO2 when they enter step two of aerobic cellular respiration producing 38 ATP, hence option b is correct.

What is Cellular respiration?

Since it joins or links the Krebs cycle and glycolysis, this procedure is also known as the link reaction or transition step.

One glucose molecule undergoes chemical processes that result in two pyruvic acid molecules, two ATP molecules, ten NADH molecules, and two FADH2 molecules.

Therefore, as a result, we know that the four pyruvic acid molecules make acetyl-CoA, which then enters the Krebs cycle to produce at the end 38 molecules of ATP are formed.

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true or false cystic fibrosis and phenylketonuria are common autosomal dominant disorders brainly

Answers

Answer:

False

Explanation:

Cystic Fibrosis and Phenylketonuria are common autosomal recessive disorders

Answer:

False

Explanation:

They're recessive

Which of the following waves has the longest wavelength?

Answers

Answer:

The Bottom Left corner graph has the longest waves.

Explanation:

The waves are spread out and have a huge distance in between each crest.

The longer the wave, the less amount of energy being emitted. The shorter the wave, the more energy that is being emitted.

#teamtrees #WAP (Water And Plant)

Which two human activities are believed to be the greatest contributors to global warming?

nonnative species introduction and the burning of fossil fuels
deforestation and the burning of fossil fuels
deforestation and nonnative species introduction
non-sustainable harvesting and nonnative species introductio

Answers

Answer:

B

Explanation:

well deforestation is ruining are forests and burning fossil fuels is pollution

What is one difference between you and a protist?
A) Your cells have a nucleus; those of protists do not.
B) During your life, you grow considerably in size; a protist doesn't.
C) All your cells can carry out all life functions on their own; those of protists cannot.
D.) Your cells are capable of division, those of a protist are not.​

Answers

Answer:

A) Your cells have a nucleus; those of protists do not.

Explanation:

Your cells are eukaryotes (which DO have nuclei) and protists don't.

Justin is walking around an area that has few trees and many tall grasses,
In which blome is Justin most likely walking?
deciduous forest
grassland
desert
tropical rain forest

Answers

Answer:

grassland

Explanation:

decidouos forest and rainforest have lots of trees and little/no tall grass

desert has little/no tree and grass

DNA Fill the blanks
- A _____________ is a change in DNA that may result in a malformed protein

-A ____________ mutation occurs when a nitrogen base in DNA changes,but the associated amino acid remains the same

- In a ____________ mutation a DNA base is changed which results in a different amino acid

- A ________ mutation results when an amino acid is inserted or deleted causing the entire sequence that follows to be different.

Answers

Answer:

A mutation is a change in DNA that may result in a malformed protein A silent mutation occurs when a nitrogen base in DNA changes, but the associated amino acid remains the same In a missense mutation a DNA base is changed which results in a different amino acid A frameshift mutation results when an amino acid is inserted or deleted causing the entire sequence that follows to be different.

Explanation:

DNA, a nucleic acid used to store genetic information, is made up of nucleotides or bases. These pair up as base pairs to make the DNA double helix. During the cell division process, random changes inside the genome can occur.

These mutations cause errors in DNA  produced within the cell; and they may involve small single nucleotide polymorphisms where single nucleotides are changed and large-scale additions or deletions involving several genes.

Name disease Resistant cattle
breeds​

Answers

Answer:

you should try asking brain- ly

Answer:

A region on chromosome 1 was associated with infectious keratoconjunctivitis (pinkeye) in cattle, which is heritable. Bos indicus breeds were observed to have better resistance to tick infestation and tick-borne diseases, as revealed through higher hemolytic complement activity

3. Which landforms are found on the Moon? (Select all that apply.)
craters
lakes
mountains
plateaus
•Science•

Answers

Answer:

Highlands Rilles Trenches divots

Explanation:

The landforms found on the Moon are craters, mountains, and plateaus. Options A, C, and D are correct.

The moon’s three major landforms are the craters, the highlands, and the maria, but there are many other prominent features on the moon’s surface.

Some impact craters, for example, have bright rays radiating outward from the center of the crater. The moon also has several rilles. Rilles are long, narrow tunnels or trenches.

There is no tectonic plate on the moon. There is no volcanic activity on the moon. Almost all of the mountains on the moon are created by asteroids impacting the past.

At the beginning of the moon’s history, there were many large asteroids in the Solar System.

Therefore options A, C, and D are correct.

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I’m doing a test and all my makeup work and I really need this done so can y’all pls answer thanks

Answers

Answer:

Only active transport requires ATP

Explanation:

Passive transport is the movement of molecules across the cell membrane without the need for energy. These substances usually move from a high concentration to a low concentration.

Active transport relies on energy from ATP to move substances across the plasma membrane. This is usually required when moving substances against their concentration gradient.

Is sickle cell anemia caused by genetic or environmental factors

Answers

Answer:

Genetic, geographic & cultural factors that cause sickle-cell anemia. It is important to note that even genetic diseases are caused by multiple social, environmental and biological factors. This is particularly true in the case of sickle-cell anemia, a genetically inherited blood disorder usually found in people with West African ancestry (PBS 2001).

Answer:

genetic

Explanation:

i searched it up on google

) Some students investigated the effect of the different concentrations of sugar in four drinks, A, B, C and D, on the movement of water across a partially permeable membrane. The students: • made four bags from artificial partially permeable membrane • put equal volumes of 5% sugar solution in each bag • weighed each bag containing the sugar solution • placed one bag in each of the drinks, A, B, C and D • after 20 minutes removed the bags containing the sugar solution and weighed them again. (i) The bag in drink A got heavier after 20 minutes. Explain why.
A contains 0.1% sugar solution.
B contains 4.2% sugar solution.
C contains 6.9% sugar solution.
D contains 10.6% sugar solution.

Answers

Answer:

Concentration of sugar in the bag was higher than in the drink or higher concentration of water outside the bag or in the drink boiling tube so water moved in (to the tubing by osmosis.

Explanation:

Concentration of sugar in the bag was higher than in the drink or higher concentration of water outside the bag or in the drink boiling tube so water moved in (to the tubing by osmosis.

The bag in drink A got heavier after 20 minutes because the water from outside traveled inside the bag via osmosis. Therefore, option (A) is correct concentration of the drink.

What is osmosis?

The process of osmosis refers to the transfer of water molecules from a solution that contains a high concentration of water molecules to a solution that contains a lower concentration of water molecules. This transfer takes place through the membrane of a cell, which is only partially permeable.

The states of hypertonicity, isotonicity, and hypotonicity are the three categories of osmotic conditions.

Within a live cell, osmosis plays a significant part in the movement of nutrients as well as the excretion of metabolic waste products. Within a cell, it regulates the flow of water and the levels of intracellular fluid so that they are more stable. Osmosis is responsible for both the regulation of cell-to-cell diffusion as well as the preservation of the mechanical structure of a cell.

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What are the products of cellular respiration?

Answers

Answer:

The products of cellular resperation are 6 carbon dioxide, 6 water, and 38 ATP.

Explanation:

CO2 is made during the kreb cycle.

H2O is made at the end of the electron transport chain.

2 ATP made by glycolysis,2 by the kreb cycle, and 34 by the electron transport chain.

Describe one example of how a cell's interior is dynamic. I will give brainiest to whoever answers correctly. Please Please Please help.

Answers

Answer:

i can obsure things

Explanation:

What is a possible reason for extinction?

The number of habitats falls below a critical level.
Too many resources
Less competition
Less number of new predators

Answers

Answer:

The number of habitats falls below a critical level.

Explanation:

The possible reason for extinction is that the number of habitats falls below a critical level. This makes it impossible for organisms to survive.

A habitat is the dwelling place of living organism in an ecosystem. The resources and other materials that ensures the survival of an organism are made available in the habitat. When a habitat begins to thin out and can no longer support organisms, then extinction will ensue.  

state two factors that determine choice of a microscope during biological investigations​

Answers

Answer:

An optical microscope is often one of the central devices in a life-science research lab. It can be used for various applications which shed light on many scientific questions. Thereby the configuration and features of the

One of the first things to consider when selecting a research microscope is the type of specimen you want to explore. For fixed samples mounted on a thin glass slide, you can use an upright microscope. Living cells demand special characteristics of the microscope because they are kept in relatively large cell culture vessels filled with cell culture media.

Explanation:

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Other Questions
Which technique or process did Donatello use in this sculpture?the assemblage technique by joining found objects and various materialsthe subtractive technique of carving in this relief sculpturethe additive technique of modeling clay to prepare for this bronze castingthe subtractive technique of carving in this in-the-round sculpture Essential Questions:How did Progressives seek to solve problems caused by rapid industrialization? "It is wintertime. The weather is cold, but the ants are doing fine. They have their warm home, and they have a lot of food to eat. They can wait for the warm weather in spring. The reason the ants have a lot of food is because they worked in the summer.So now they have grain to eat. Grain is a kind of plant. People plant it and cut it and then they use it to make bread. The ants get the grain in summer, because that is when grain grows. The ants live in the fields where the grain grows. When the wind blows, some grain falls and the ants rush to get it. They do not eat it right then. They save it because they need to be able to have food in the winter months when plants do not grow. This goes on all summer.The ants work hard every day. They pick up the grain, they carry it to their home. Every ant helps. Each ant carries one piece of grain. It is hard work. They carry more than they need to eat every day. They carry grain they will eat in winter, too. They play sometimes, but most of the time they work.The grasshoppers live near the ants, and they love summer. They hop and play and they laugh at the ants. They say, We have fun every day while you work every day. Come and play. You can get grain later. But the ants say, No, we have to work.Soon it is winter, and the grasshoppers are cold. They are hungry, too. They do not have food to eat. Since they played all summer, they did not save food for winter.One day, a grasshopper came to see the ants and he was very hungry. Please, ants, could you help me a little bit? I am just so hungry! said the grasshopper.The ants asked him, "Why didnt you work in summer? We did. Remember, how you played while we worked? You made fun of us and said, All work and no play is no good. Well, now we have food and you are hungry.The grasshopper said, "I didn't have the time. The weather was so lovely that I spent all the days singing. I couldnt help but have fun. We had such a good time.The ants said, We are sorry you have no food. We have a lot because we worked hard. You have none because you played. But, we will give you some food because we are good, kind neighbors. We want you to live, so we will help you now. But learn from us. Playing is a lot of fun. But you need to work to live.The grasshopper thanked the ants. The grasshopper had learned a lesson. It is fun to play, but you need to save for winter, too. You need to work if you want to eat. Next summer, he would work and play, too, just like the ants."Which sentence from the story is an example of an opinion?"We want you to live, so we will help you now""Grain is a kind of plant""The grasshoppers live near the ants""It is fun to play, but you need to save for winter, too"Based on the story above, which cause and effect relationship best describes the conflict in the story?The ants don't like the grasshopper, so they took all its food.The grasshopper has no food because he played all Summer and refused to work.The ants are kind, due to the fact that they shared their food with the grasshopper.The Summer was rough, so nobody has food for Winter.This story talks a lot about working hard. Based off the connotations and tone of the story, the author thinks that hard work should be seen as...something to be avoided in favor of fun activitiessomething that is important and should be a prioritysomething overachievers do, and not for everyonea way of getting others to like you and depend on youWhich of the following sentences is correct?The ants, unlike the grasshopper, spends the summer working.The ants, unlike the grasshopper, spending the summer working.The ants, unlike the grasshopper, spend the summer working.The ant, unlike the grasshoppers, spend the summer working.Which would be an appropriate thesis statement for an essay on why the grasshopper should work hard like the ants? In the ant and the grasshopper, the ants are right to spend the Summer working in order to survive the Winter.I think the grasshopper needs to work harder so the ants don't have to help him.Working hard is important because if you don't then you won't do well in life.The story is about grasshoppers who just play while the ants work, then the grasshoppers don't have food. Courtney has written this topic sentence.Which lines from the speech best supports this topicsentence?The "I Have a Dream" speech by Dr. Martin Luther King,Jr. uses repetition to appeal to the emotions of hisaudience.And as we walk, we must make the pledge that weshall always march ahead. We cannot turn back.There are those who are asking the devotees of civilrights, "When will you be satisfied?"O And they have come to realize that their freedom isinextricably bound to our freedom. We cannot walkalone.O We refuse to believe that there are insufficient fundsin the great vaults of opportunity of this nation. Andso we've come to cash this check, a check that willgive us upon demand the riches of freedom and thesecurity of justice.And so let freedom ring from the prodigious hilltopsof New Hampshire. Let freedom ring from the mightymountains of New York. Let freedom ring from theheightening Alleghenies of Pennsylvania. 4Noah has a bag of candiesthat he splits betweenhimself and 3 friends. Hisbrother then gives him 8more candies. If he now has36 candies, how many werein the bag to begin with? Explanation too please Every mountain has a valley Whose quote is that? Sorry that the answers are long! ONLY GIVE BRANLIST FOR RIGHT ANSWER! Points (7, 5) and (7, 5) on the coordinate grid below show the positions of two players of a football team:Which statement best describes the relationship between the positions of the two players? Player 1's position is Player 2's position reflected across the x-axis; only the signs of the x-coordinates of Player 1 and Player 2 are different. Player 1's position is Player 2's position reflected across the x-axis; only the signs of the y-coordinates of Player 1 and Player 2 are different. Player 1's position is Player 2's position reflected across the y-axis; only the signs of the x-coordinates of Player 1 and Player 2 are different. Player 1's position is Player 2's position reflected across the y-axis; only the signs of the y-coordinates of Player 1 and Player 2 are different. The Grateful CraneHow do the Japanese regard cranes?How does Musai help the crane?Describe Musais wife.How does Musais wife help the family when famine threatens them?What does Musai discover?What is the tales denouement?Did Musai deserve his fate? Explain. step 3 of my operation to ruin my sisters account 19.3Which best describes an objective summary?AbelO an explanation written in one's own words that provides all of the details and information in a texta written response that provides a personal opinion related to the central idea of a texta short statement written in one's own words that provides the key points or central idea of a textO a formal report that provides scientific facts and data to support the ideas in a text Please helpHow many solutions can be found for the system of linear equations represented on the graph?A)no solutionB)one solutionC)Two solutions D) Infinitely many solutions Heyyyyy plz help I dont bite How many electrons must get passed down the Electron Transport Chain before energy is generated?(1 point)A 5B 3C 4D 2 An example of Passive resistance was using violence to get what youwanted.True or false can someone please help me out with this ? very much would appreciate the help! 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