Adults spend about __________ of their time asleep in rem sleep.

Answers

Answer 1
Adults spend about 20% of their time asleep in rem sleep. Hope this helped, have a great day! :D

Related Questions

Which principle of population biology states, "too much or too little of any abiotic factor can limit or prevent population growth"?

Answers

It is the principle of the limiting factor.
A factor can be anything needed for the population growth/survival, for example, a nutrient, temperature, soil type, water, sunlight, etc. It is considered a limiting factor when it is in shortest supply out of all the other required supplies from the other needed factors. Because it is the one in shortest supply it will limit or prevent the population to grow.

The principle of population biology in question is the concept of limiting factors, specifically density-independent factors that include abiotic factors like temperature and water, affecting population growth irrespective of its density. The principle of population biology that states "too much or too little of any abiotic factor can limit or prevent population growth" refers to the concept of limiting factors. Within the two major types of limiting factors, the one specifically addressing abiotic factors is known as density-independent factors. These factors include environmental elements like temperature, water, light, and nutrients, which can impact population growth regardless of the population's density. Conversely, density-dependent factors are often biological and impact population size in relation to the population's density, affecting birth and death rates through phenomena such as competition, disease, and predation.

As populations grow, they often reach a point where resource scarcity becomes an issue. When an abiotic factor is outside of an organism's range of tolerance, it can be detrimental to the population's growth; this range includes an optimum range where the population thrives. If the abiotic factor falls below or rises above the tolerance limits, population decline can occur as individuals fail to survive in those conditions. As a result, ecologists and conservationists consider these factors essential for managing populations and ecosystems.

Sammy is taking notes to study for a test. He wrote out the steps that involve hydrogen during photosynthesis. The steps are shown, but they are not in the correct order.

1 - Water is broken down into oxygen and hydrogen.
2 - Glucose is broken down to be used by plants.
3 - Hydrogen combines with carbon dioxide to form glucose.
4 - Hydrogen enters the plant as part of water.

Which lists the correct order of the steps?
Answers-
A: 4, 2, 1, 3
B: 4, 1, 3, 2
C: 4, 3, 1, 2
D: 4, 2, 3, 1

Answers

B: 4 hydrogen enters the plant as water, 1 water is broken down into hydrogen and oxygen, 3 hydrogen combines with carbon dioxide to form glucose, 2 glucose is broken down to be used

The correct order of steps (4,1,3,2) that show how hydrogen is involved during photosynthesis is as follows:

4 - Hydrogen enters the plant as part of water.

1 - Water is broken down into oxygen and hydrogen.

3 - Hydrogen combines with carbon dioxide to form glucose.

2 - Glucose is broken down to be used by plants.

PHOTOSYNTHESIS:

Photosynthesis is a process whereby green plants obtain their food using energy from sunlight.

Photosynthesis requires certain substances, which are used as reactants during the process. These molecules include water, carbon dioxide, light energy from sun.

Therefore, the correct order of steps (4,1,3,2) that show how hydrogen is involved during photosynthesis is as follows:4 - Hydrogen enters the plant as part of water.1 - Water is broken down into oxygen and hydrogen.3 - Hydrogen combines with carbon dioxide to form glucose.2 - Glucose is broken down to be used by plants.

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What other data could be collected from the fossil specimen to help properly identify its evolutionary history?

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Other data that could be collected from the fossil specimen to help identify its evolutionary history include: THE TIME PERIOD IT LIVED IN, ITS FOOD SOURCE AND THE ITS LIFE SPAN.
These data are used by scientists to identify the story of evolution of living organisms.

What do man eating fish use for barbeques?

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A man eating a fish for barbeques will need a grill and grilling tools, first and foremost. Secondly, he will need some sort of rub or sauce to put on the fish, as well as acceptable kitchenware to prep and eat the fish.

When a plant cell, such as one from a peony stem, is submerged in a very hypotonic solution, what is likely to occur? when a plant cell, such as one from a peony stem, is submerged in a very hypotonic solution, what is likely to occur?

Answers

A hypotonic solution is one in which there is more water per particle of solute compared to the cell. So the water will rush into the cell and it will become turgid. A hypertonic solution has many particulates of solute, more than the cell. So water will rush out of the cell and the cell is said to be flaccid.

Answer:

The cell will become turgid.

Explanation:

Evaluate the advantage of a flatworms thin body

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Easily can slip away from predators.

Answer:

Flat worm.have flat bodies be wise they lack true body cavity or body fluid cavity.

They have incomplete digestive system with one opening which make them to absorb food easily.

Their shape allow easy diffussion of gases i.e take in oxygen and eliminating carbondioxide because they lack circulatory system

They have reproduction success because they are hermaphrodite.

Explanation:

Flat worm worms are organisms that live in water or moist environment. They have flat shape. They lack circulatory system, they have no true body cavity and they are hermaphrodites. Some are free living while others are parasitic. Examples include blood fluke, tapeworm. They are bilateral symmetrical.

(Select all that apply.) Choose the operations conducted by the "cell factory."

1.duplicate itself
2. interpret coded information
3.selective exchange
4.perform maintenance
5.decompose chemicals
6.synthesize chemicals
7.convert energy

Answers

Final answer:

The cell factory conducts operations such as duplicating itself, interpreting coded information, selective exchange, performing maintenance, decomposing chemicals, synthesizing chemicals, and converting energy, which are all essential for cell growth, division, and environmental response.

Explanation:

The 'cell factory' conducts several operations akin to a miniature industrial complex. Some of these operations include:

Duplicating itself - akin to 'copying' the factory for growth or repair.Interpret coded information - similar to 'reading' blueprints to create specific products.Selective exchange - employing a 'quality control' system for importing materials and exporting products.Perform maintenance - ensuring the machinery is functioning properly.Decompose chemicals - breaking down raw materials into usable parts.Synthesize chemicals - constructing new products from smaller components.Convert energy - like converting power sources into energy that fuels the factory's operations.

These operations are critical for the survival and proper functioning of cells, allowing them to grow, divide, and respond to their environment. They involve metabolic processes like catabolism and anabolism, where cells break down complex chemicals for energy and build complex molecules from simpler ones, respectively.

Final answer:

The cell factory performs several operations: it duplicates itself, interprets coded information, engages in selective exchange, performs maintenance tasks, decomposes and synthesizes chemicals, and converts energy. These activities are central to cellular metabolism and maintaining life.

Explanation:

Operations Conducted by the Cell Factory

The concept of a “cell factory” refers to the various complex activities and processes that occur within a cellular environment to maintain life. The operations the cell conducts include:

Duplication of itself: Cells have the capacity to reproduce by duplicating their DNA and dividing, which is a part of the cellular life cycle.

Interpreting coded information: Cells interpret genetic code from DNA to synthesize proteins, which is essential for executing various cellular functions.

Selective exchange: Cells control the import and export of molecules, thereby maintaining homeostasis through selective permeability of the cell membrane.

Performing maintenance: Cells conduct various repair and maintenance processes to sustain a healthy state and respond to stress.

Decomposition of chemicals (catabolism): Breakdown of complex molecules into simpler ones, which often releases energy.

Synthesizing chemicals (anabolism): Creation of complex molecules from simpler ones, which requires energy.

Converting energy: Cells convert energy from one form to another, as in the mitochondria where ATP is produced as usable energy for cellular processes.

These operations are fundamental for the cell to fulfill its role in the organism, and they form the basis of cellular metabolism, including other metabolic processes, cell organization and biogenesis, protein metabolism, and transport.

During which process is mRNA converted into a sequence of amino acids for protein production?

A. transcription
B. translation
C. DNA replication
D. mRNA synthesis

Answers

Answer:

Translation

Explanation:

During the process of translation, the mRNA is converted into a sequence of amino acids for protein production, which is option B as it is the second step in gene expression that takes place in organisms.

During the process of the translation, mRNA molecule bind to the ribosome (70s or 80s), which moves along the mRNA strand. The ribosome "reads" the mRNA sequence especially the triplets sets or three nucleotides, known as codons. Each codon corresponds to a specific amino acid, according to the genetic code that express the trait.

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The ring of muscle tissue that controls the pupil's size is called the:

Answers

The ring of muscle tissue that controls the pupil's size is called the iris.

Final answer:

The ring of muscle that controls the pupil's size is the iris, a pigmented and circular muscle that regulates light entry into the eye and is controlled by the autonomic nervous system.

Explanation:

The ring of muscle tissue that controls the size of the pupil is called the iris. This pigmented, circular muscle is situated at the front of the eye and it plays a crucial role in vision by regulating the amount of light entering the eye. The iris contains two sets of muscle fibers; one set that acts as a sphincter to decrease pupil size and another set that helps dilate it. The autonomic nervous system controls these muscles through the sympathetic and parasympathetic pathways, with neurotransmitters like norepinephrine causing dilation and acetylcholine (ACh) resulting in constriction.


What is the probability of parents with allele combinations Ff and FF having an offspring that is FF?


25%

75%

100%

50%

Answers

Final answer:

The probability of parents with genotype combinations Ff and FF having an FF offspring is 50%, considering the Ff parent has a 50% chance of contributing an F allele and the FF parent will always contribute an F allele.

Explanation:

The question is asking about the probability that two parents with allele combinations Ff (heterozygous) and FF (homozygous dominant) will have an offspring with the genotype FF. To determine this, we can set up a Punnett square. The Ff parent can contribute an F allele or an f allele, each with a probability of 50%. The FF parent will always contribute an F allele since both alleles are F.

When we cross these two parents, the potential offspring's genotypes that can be produced are: FF (when the Ff parent contributes the F allele) or Ff (when the Ff parent contributes the f allele). Therefore, the probability of an FF offspring from this cross is 50%, as only one out of the two possible allele combinations from the Ff parent could result in FF (the other combination Ff would not be homozygous dominant).

So, the correct answer to the question is: 50%.

Spotting what kind of bird during the daytime foretold death?

Answers

I believe it was an Owl. Seeing as the species is nocturnal, it was an old superstition in Greece.

_____ is the part of the autonomic nervous system that calms the body.

Answers

The parasympathetic nervous system is the part of the autonomic nervous system that calms the body.

A plant species lives in an area with limited sunlight. Which physiological adaptation would be most useful to the plant?

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Answer:Large Leaves Leave are the part of a plant that contains chloroplasts. Chloroplasts are structures that contain chlorophyll, a pigment that captures sunlight and allows the plant to make sugars. The larger the leaf surface a plant has, the more sunlight it can capture.

b) Large leaves are the most beneficial adaptation for plants in areas with limited sunlight because they increase the surface area available for photosynthesis. Therefore, large leaves enhance the plant's ability to thrive in such environments.

The most useful physiological adaptation for a plant species living in an area with limited sunlight is large leaves. Large leaves increase the surface area available for photosynthesis, allowing the plant to capture more sunlight even when it is scarce.

Colorful flowers: Primarily used to attract pollinators, this adaption does not help in capturing sunlight.Large leaves: Increase surface area for photosynthesis, making it easier to capture the limited sunlight available.Deep roots: Useful for accessing water deep in the soil, but not helpful for sunlight capture.Thin cuticle: Reduces water loss but does not aid in capturing sunlight.

Overall, large leaves are the optimal adaptation for maximizing sunlight absorption in areas with limited sunlight.

complete question:

A plant species lives in an area with limited sunlight. Which physiological adaptation would be most useful to the plant?

A. colorful flowers

B. large leaves

C. deep roots

D. thin cuticle

Though they are constantly changing, ecosystems are naturally

Answers

Though they are constantly changing, ecosystem are naturally BALANCED.
An ecosystem is said to be balanced, when the components of the ecosystem are in harmony. Two of the principal processes that usually throw ecosystems out of balance is pollution and hunting.

What is nirvana? question 2 options: 1) cessation of suffering 2) right livelihood 3) reincarnation 4) meditation?

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I'm guessing that it is 4.  Please mark Brainliest!!!
It's commonly used to describe the goal of the Buddhist path. Buddhist practice to extinguish the suffering of dukkha, so your answer is 1) Cessation of suffering.

When chromosomes exchange genetic material during meiosis choose?

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exchange of genetic material between non sister chromatic from homologous chromosomes during pro phase I of meiosis; results in new allele combinations.

What are seaweeds? help

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Seaweed are group of photoqutographic, multicellular, marine algae.
They are plant like organisms that generally live attached to a rock.
large algae growing in the sea or on rocks below the high-water mark.

What type of organism uses and produces both oxygen and carbon dioxide?

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The type of organism that uses and produces both oxygen and carbon dioxide is PRODUCER. Producer refers to any living organism which can synthesize its food using energy from the sun, that is organisms that can carry out photosynthesis. To carry out photosynthesis, producers use carbon dioxide and water to produce glucose, water and oxygen. During the dark stage of photosynthesis oxygen is consumed by plants
Final answer:

Plants, algae, and cyanobacteria both use and produce oxygen and carbon dioxide through photosynthesis and cellular respiration, playing vital roles in the carbon cycle.

Explanation:

The type of organism that both uses and produces oxygen and carbon dioxide is typically any organism that performs photosynthesis and cellular respiration. Specifically, plants, algae, and a group of bacteria known as cyanobacteria are capable of photosynthesis. They use light energy to convert carbon dioxide and water into glucose and oxygen. On the other hand, all living things, even these photosynthetic ones, engage in cellular respiration, which releases carbon dioxide and water as waste after using glucose and oxygen to create energy.

These processes of matter and energy conversion are crucial for the carbon cycle. Producers like plants and cyanobacteria capture carbon dioxide through photosynthesis and convert it into organic compounds. Consumers then use these compounds and return carbon dioxide into the atmosphere through the process of respiration. Thus, the balance of oxygen and carbon dioxide in the atmosphere is maintained by the interconnected activities of photosynthesis and respiration.

Cyanobacteria are especially versatile as they can also fix atmospheric nitrogen into ammonia, which is then utilized to form amino acids, illustrating their critical role in both carbon and nitrogen cycles.

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Which of the following energy pyramids shows the correct placement of trophic
levels

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The correct placement of tropic levels is shown by upright energy pyramid.

"The trophic level of an organism is the position it occupies in a food web."

Trophic level is described  as the position of an organism in the food chain and ranges from a value of 1 for primary producers to 5 for marine mammals and humans. The method to determine the trophic level of a consumer is to add one level to the mean trophic level of its prey.

The lower level contains producers and the top level contains predators.

Energy pyramids  is a graphical representation of the energy found within the trophic levels of an ecosystem." The producers have highest energy whereas the top-level organisms would have the lowest energy because energy decreases by 10% while moving from lowest to upper levels.

What happens to the energy in an organism when that organism is eaten by another organism?

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10% gets turned into heat. The other 90% is given the the consumer

disturbing an area of an ecosystem where an organism lives is called

Answers

Habitat destruction I think is what it’s called

Damian grew a plant from a leaf cutting. How did the plant reproduce?

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Answer:

Vegetative reproduction

Explanation:

Vegetative propagation is the process of growing a new plant from parts of another plant.

What is vegetative propagation?

Vegetative propagation is the process of growing a new plant from parts of another plant. This can be done in several ways, the most common being cutting. Cutting can allow for the plant to develop roots in the part that was cut off.

Plants can reproduce vegetatively by using their stems, roots, and leaves. It is an asexual reproductive method used by plants.

In order to improve the plants, horticulturists actually use propagation techniques like grafting and budding. Learn more about vegetative reproduction now.

Therefore, Vegetative propagation is the process of growing a new plant from parts of another plant.

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The gap that can be from 60nm to 100nm, seen in this junction between the nerve and the muscle is known as the

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The gap that can be from 60nm to 100nm, seen in this junction between the nerve and the muscle is known as the neuromuscular junction. It is also known as the myoneural junction. This junction is a chemical synapse formed by the contact between a motor neuron and a muscle fiber.

A plant and numerous snails occupy the same tightly closed aquarium. The aquarium is exposed to sunlight for 12 hours a day and has 2 inches of water in it. What would happen to the plant if you removed all the snails from the aquarium? The plant would die from lack of glucose. The plant would die from lack of oxygen. The plant will thrive because it can undergo both processes of photosynthesis and cellular respiration. The plant will thrive because it can photosynthesize but then it will die because it cannot perform cellular respiration.

Answers

Answer: Option C

Explanation:

The plants has the ability to survive on its own. It can itself release carbon dioxide into the closed system and use the carbon dioxide for the process of photosynthesis.

The snails in the aquarium plays a major role in the releasing carbon dioxide and cleaning the aquarium.

The ability of the plant to perform photosynthesis needs carbon dioxide and water and releases oxygen in atmosphere. Without snails also the plants will be able to survive on their own.

The plant would die from lack of glucose, if you removed all the snails from the aquarium, hence option A is correct.

What is the relationship between snails and plants?

Some plants will also take ammonia, and water plants will absorb carbon dioxide for photosynthesis (as a source of nitrogen for growth). Through specialized organs like gills, aquatic species like fish and snails directly collect oxygen from the air and emit carbon dioxide into the water.

To survive, the snail must breathe oxygen, the oxygen dissolved in the water is breathed by the snail.

The oxygen generated by the aquatic plants in the aquarium is the only source of oxygen available to replenish the oxygen the snail devoured because the aquarium is a tiny biome.

Therefore, photosynthesis is the mechanism through which plants make oxygen, plant would die from lack of glucose, hence option A is correct.

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Which hormone directs essentially all events of the absorptive state?

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the answer is insulin .......

Which nursing actions essential before an elisa test is performed?

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OBTAINING A WRITTEN CONSENT FROM THE PATIENT IS ESSENTIAL before an ELISA test is performed.
ELISA test is a test that is used to detect and measure antibodies in the blood.  Antibodies related to certain infections, such as HIV, can be detected by this test. A positive ELISA result indicates that the patient is infected.
ELISA stands for Enzyme Linked Immunosorbent Assay.

What role does DNA play in the transmission of genetic information?

Answers

It holds all the chromatin

What photosynthetic protists have a glassy, two part cell wall made of silica?

Answers

it is...................................diatoms

The harmonic law would suggest that Neptune will take ____ to orbit the sun than mercury.

Answers

mercury has the smallest orbit and neptune has the largest. so neptune would take a longer amount of time to orbit the sun.

equal amounts of time

How does natural selection lead to the outcome of evolution

Answers

Answer:

One species can gradually change into another species.

Explanation:

A pex

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He stayed and liked the palms of every visitor he welcomed One day a scientist for dog allergies found Leo or should I say, Leo found him, and it was love at first sight. The scientist's name was Will, and he much enjoyed dogs and although he is allergic to dogs, Leo didnt cause him to sneeze, although with the many wrinkles in their fur, they usually tend to make people very allergic. So, will loaded Leo and his family in the car and went to a friends house to give them the dogs. Will kept Leo after realising he felt a deep connection between them. IS THIS USING CORRECT GRAMMAR PLZ ANSWER Read the text carefully, then answer the question located beneath:Time to "Bee" Wary, by Gordon WintersAfricanized honey bees were created in Brazil in 1957. Scientists mixed local bees with African ones to create a bee that would make more honey. They ended up with something much different. The new bees evolved in unexpected ways. They multiplied and migrated north. These Africanized honeybees are now known as killer bees for several scary but legitimate reasons.Killer bees are far more aggressive than their relatives. They have been known to attack in great numbers, even when there has been no direct threat on their hives. They have swarmed because of loud noises, dark clothing, bright jewelry, and even strong perfume. They will chase a person for more than a quarter of a mile and remain angered for up to 24 hours.Killer bees are also dangerous because of their sting. While most bees take up to 30 seconds to attack, killer bees sting in just 3 seconds. Their venom is no stronger than a regular bee's, but when one killer bee stings, others follow. With up to 80,000 members in a colony, victims are quickly overwhelmed. So many stings in such a short time can cause allergic reactions. Victims enter a state of shock, lose blood pressure, and in many cases, die.A final reason why "killer" has been added to their name is the unfortunate number of deaths they have caused. Experts estimate that the Africanized honeybee moves at a rate of about 200 miles each year. As the bees claim new territory, they claim new victims as well. More than 1000 people have been stung to death in South and Central America. There have been rising numbers of attacks in Mexico and a handful in the United States. Once a swarm sets sights on a victim, it is very difficult for the victim to escape. Once attacked, it is very difficult to survive.Thankfully, there has been no killer bee invasion as some once predicted. Although there is no need for panic, the threat of the killer bee is real and should be taken seriously. It is good practice to call a professional to remove beehives in your area. If you are stung multiple times by any insect, you should always seek medical attention. You may not be expert enough to tell the difference between a killer bee and a less dangerous one, so be smart. It is better to be safe than sorry.Which sentence from the conclusion paragraph best rephrases the author's thesis?A. Thankfully, there has been no killer bee invasion as some once predicted.B. Although there is no need for panic, the threat of the killer bee is real and should be taken seriously. C. You may not be expert enough to tell the difference between a killer bee and a less dangerous one, so be smart. D.It is better to be safe than sorry. PLZSSSSSHELP DUE FOR TODAY In the diagram, JG = 5 cm and GE = 10 cm. Based on this information, can G be a centroid of triangle HJK? Point G cannot be a centroid because JG does not equal GE. Point G cannot be a centroid because JG is shorter than GE. Point G can be a centroid because GE and JG are in the ratio 2:1. Point G can be a centroid because JG + GE = JE. Read this excerpt from "The All-American Slurp." When the main courses were finished, Mother brought out a platter of fruit. I hope you werent expecting a sweet dessert, she said. Since the Chinese dont eat dessert, I didnt think to prepare any. Oh, I couldnt possibly eat dessert! cried Mrs. Gleason. Im simply stuffed! How does this event support the resolution of the story? It proves that the neighbors practice healthy eating habits. It suggests that Mrs. Lin wants to teach people Chinese cooking. It shows that the Lins have successfully hosted their American friends. It illustrates that the Lins and Gleasons have similar ideas about desserts. An rfid reader is also called a(n) ______. The __________ skeleton is made up of 126 bones of the limbs and girdles. a concrete patio is 5 2/3 feet wide. it has an area of 36 5/6 square feet. Is the concrete slab long enough to fit a 7 foot picnic table without placing the table along the diagonal of the patio? Explain Read this excerpt from The People Could Fly.Nehemiah was a one who believed that if he must be a slave, he'd best be a smart one. No one who callin himself Master of Nehemiah had ever been able to make him work hard for nothin. Nehemiah would always have a funny lie to tell or he made some laughin remark whenever the so-called Master had a question or a scoldin.Which best describes how Nehemiah survived being enslaved?by using his wit to charm peopleby using his wings to fly away by using his intelligence to gain knowledgeby using his strength to overpower people Which of the following areas saw a vast number of immigrants A Georgia B Maine C Pennsylvania The coalition of various reform groups was called the _____. in the nineteenth century, women could be arrested, but couldn't serve on a jury. is this statement true or false? 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