whats a prokaryote? what is a eukaryote?

Answers

Answer 1

Answer:

 eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not


Related Questions

when is glycogen , which is stored in the liver , converted into glucose and released into the blood ?​

Answers

Answer:

This stored form of glucose is made up of many connected glucose molecules and is called glycogen. When the body needs a quick boost of energy or when the body isn't getting glucose from food, glycogen is broken down to release glucose into the bloodstream to be used as fuel for the cells.

In which situation has the precautionary principle been least strictly applied?

A chain of health stores is allowed to sell over-the-counter nutritional supplements that

have not been tested by the Food and Drug Administration for adverse effects.

A foreign marketplace relaxes certain restrictions on genetically modified produce after

testing demonstrates that the produce poses no health risks to consumers.

A toy company recalls a particular brand of action figure after several young children nearly

die from choking on loose pieces of plastic.

The U. S. Government requires that cigarette manufacturers include on cigarette packages a

warning from the surgeon general that smoking causes diseases such as lung cancer

Answers

The precautionary principle is  invoked after there has been established that there is risk in the use of a product.

What is the precautionary principle ?

The precautionary principle  is invoked when it is supposed that a particular product or a drug could put the lives of people at risk. This has been invoked many times in the health sector.

The situation in which the precautionary principle  is least strictly applied is when a chain of health stores is allowed to sell over-the-counter nutritional supplements that have not been tested by the Food and Drug Administration for adverse effects.

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Explain the places occupied by grass, a rabbit, and a wolf in an energy pyramid.

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Answer:

Grass is on the bottom of the energy pyramid because it needs the least amount of energy. A rabbit is in the primary consumers level, and a wolf is a secondary level consumer.

Explanation:

which substance is a nuclei acid

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Answer:

Nucleic acids are polynucleotides

Explanation:

Hope this helps

Answer:

Nucleic acids, which include DNA (deoxyribonucleic acid) and RNA (ribonucleic acid)

Explanation:

Nucleic acid are made from monomers known as nucleotides. Each nucleotide has three components: a 5-carbon sugar, a phosphate group, and a nitrogenous base. If the sugar is deoxyribose, the polymer is DNA

Deserts are found around the globe, generally around a belt of ______degrees north and south latitude where global wind patterns carry down dry air from the upper atmosphere.

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Deserts are found around the globe, generally around a belt of 30 degrees north and south latitude where global wind patterns carry down dry air from the upper atmosphere.

have a great day!

Why do so some birds addict to smoke?

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Nicotine is absorbed easily through the skin and feathers of birds. The smoke emitted from cigarettes will release nicotine into the air and that nicotine will settle on surfaces. These surfaces include your bird’s cage, bowls, toys and the bird itself. When a bird has nicotine land on their skin from secondhand smoke they will many times pick at their feathers or bite at their feet. Some will bite at themselves to the point that they create open wounds.

Respiratory infections and lung cancers are also a concern for birds kept in an environment where secondhand smoke is prevalent. Pneumonia is a very serious condition in domesticated birds and can lead to death.

hope it helps...!!!

The nervous system has two main divisions, which include the central nervous system and the _____ nervous system.

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Answer:

peripheral

Explanation:

True or False: A trait is only considered an adaptation if it is beneficial to the organisms current environment

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Answer:

this statement is false:

Explanation:

natural selection is a process im which organism evolve to become better adapted to their environment

Algae are small photosynthetic organisms found in aquatic ecosystems. Their cells produce a kind of oil. Scientists learned how to extract the oil to create fuel, which can be used in place of fossil fuels. Scientists think algae can produce 60 times more oil per acre than plants, like corn, that are commonly used to produce biofuel.

To produce algae oil, very large ponds were built for growing algae. However, scientists soon made two discoveries.
As the algae grew, it formed layers at the pond surface. These layers crowded and shaded one another.
Many insects and other consumers frequently entered the ponds.
Based on the two discoveries, what would likely be a problem for algae oil production?
A.
Crowding reduces access to food, so it makes algae less able to take in sugar and produce oil.
B.
Insects feed on algae, so all of the energy stored in algae oil is converted back into light energy.
C.
Consumers feed on algae, so the energy stored in algae oil is permanently lost from the environment.
D.
Shading reduces access to sunlight, so algae produce less sugar and are less able to store energy.

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Answer:

C.

Consumers feed on algae, so the energy stored in algae oil is permanently lost from the environment

what order do they go in

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Answer:

saying that the top box is number one, the order is 5, 2, 4, 3, 1

hope that helps xoxo<3

why do we need water and food

Answers

Answer:

To help regulate temperature and maintain other bodily functions

Explanation:

does that help

What are ecosystem services? provide two examples and explain how these services benefit people. (site 1)

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Ecosystem services is an expression that makes reference to different uses derived from the natural environment (ecosystems).

What are ecosystem services?

The expression 'Ecosystem services' makes reference to different uses that humans make from the natural environment.

These services include has both social and economic importance for human activities (e.g., tree extraction and deforestation).

Thus, Ecosystem homeostasis is fundamental for the development of a society and it should not be exploited.

To learn more about the ecosystem click here:

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Answer:

Ecosystem Services refer to the benefits that humans receive from the natural environment. They are the various processes and functions that ecosystems provide, such as the purification of air and water, nutrient cycling, and the provision of food, fuel, and fiber. Ecosystem Services are crucial for human survival and well-being, and they are essential for maintaining the balance of the planet's natural systems. One example of an ecosystem service is the pollination of crops by bees and other insects. Pollinators are responsible for fertilizing flowers, which allows plants to produce fruits, vegetables, and seeds. Without pollinators, many crops would not be able to produce a yield, resulting in a significant reduction in food production. Additionally, pollinators are essential for maintaining the diversity of plant species, which is essential for the health of ecosystems. The economic value of pollination services has been estimated to be worth billions of dollars annually. Another example of an ecosystem service is the role of wetlands in mitigating flooding and reducing erosion. Wetlands act as natural sponges, absorbing and storing water during heavy rainfall and releasing it slowly over time. This helps to reduce the risk of flooding downstream and prevents soil erosion. Wetlands also provide important habitats for a diverse range of plant and animal species, which supports the overall health and resilience of ecosystems. The economic value of wetlands in terms of flood control and erosion prevention has been estimated to be worth billions of dollars. In conclusion, ecosystem services are essential for human well-being and the health of the planet's natural systems. They provide a wide range of benefits, including food production, water purification, flood control, and erosion prevention. The examples of pollination and wetlands demonstrate how ecosystem services benefit people by supporting food production and reducing the risk of natural disasters. It is important to recognize the value of ecosystem services and to take steps to protect and conserve them for future generations. 

Explanation: 100% on edge!

in your own words list Kepler's three laws of planetary motion

Answers

Answer:

1) Every planet's orbit is an ellipse with the sun at a focus.

2) A line joining the sun and a planet sweeps out equal areas in equal time(s)

3) The square of a planet's orbital period is proportional to the cube of semi major axis of it's orbit

PSYCHOLOGY: Personal characteristics such as one’s __________ and __________ are often stable throughout one’s lifetime. A. temperament . . . emotionality B. attitude . . . intelligence C. temperament . . . attitude D. emotionality . . intelligence

Answer: A. temperament . . . emotionality

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Answer:

A : temperament . . . emotionality

Explanation:

What is the relationship between a gene and an operon.

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Answer:

An operon is a segment of DNA containing a cluster of genes, which are all under the control of a single promoter and the same regulatory elements. The genes in an operon get transcribed together into a single mRNA strand and therefore undergo the same transcriptional regulation.

hope it helps

Sugar is a type of carbohydrate.
(i) Eating too much sugar can make a person overweight.
Suggest why.

Answers

Answer:

Explanation:

--> Excess sugar may cause you to pack on weight because it's high in calories while offering few other nutrients.

: )

In a variety of ways, a high-sugar diet can cause weight gain. It's high in empty calories that have no nutritional value, causing your body to store fat and tricking your brain into wanting more.

7. Discuss the practical and theoretical differences between an interval training program used to improve the ATP-PC system and a program designed to improve the ATP production via glycolysis.

Answers

The ATP-phosphocreatine (PC) system is more suitable in conditions of high energy expenditure, whereas glycolysis is a step during cellular respiration.

What is cellular respiration?

Cellular respiration is a chemical process by which aerobic cells generate energy in the form of ATP by using foods as a source of energy in presence of oxygen.

During cellular respiration, glycolysis (glycolytic pathway) is the first step for ATP production.

The ATP-PC system is anaerobic, works in hypoxia conditions (oxygen absence), and is faster to provide energy than cellular respiration.

However, the ATP-PC system is energetically less efficient than cellular respiration in terms of the number of ATP molecules produced per unit of glucose.

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Which statement best describes how bacteria recycle matter in an ecosystem?.

Answers

What describe how bacteria recycle matter in an ecosystem is that Bacteria break down organic debris to recycle nutrients in the ecosystem.

What is Recycling?

Recycling is the process where wastes are collected and are break down into smaller and new pieces by microorganisms such as bacteria to form new product that are effective,healthy and use ful to the ecosystem.

Therefore, What describe how bacteria recycle matter in an ecosystem is that Bacteria break down organic debris to recycle nutrients in the ecosystem.

Learn more about recycling below.

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Which is NOT an example of a transfer payment?
A. welfare
B. salaries
C. Medicare
D. Social Security

Answers

Answer:

B. Salaries

Explanation:

Answer:

b

Explanation:

compare and contrast the five types of evidence that support the theory of evolution

Answers

There are five lines of evidence that support evolution: the fossil record, biogeography, comparative anatomy, comparative embryology, and molecular biology. The basic idea of natural selection is that a population of organisms can change over the generations if individual having certain heritable traits leave more offspring than other individuals. The result of natural selection is evolutionary adaptation, a population’s increase in the frequency of traits that are suited to the environment. In modern terms, we would say that the genetic makeup of the population has changed over time, and that is one way to define evolution. Evolution leaves observable signs. There are five lines of evidence that support evolution: the fossil record, biogeography, comparative anatomy, comparative embryology, and molecular biology.

Which is not included in the atmospheric conditions?
A. wind
B.Humidity
C. Potential energy
D. Temperature

Answers

Answer:

I believe the answer is C. Potenial energy

Explanation:

Earths magnetosphere is not part of it and that potential energy.

The diagram represents the development of an embryo.

Which choice is true about the resulting embryo?

It is genetically different from its parents.
It is genetically identical to its parents.
It contains a different number of chromosomes from its parents.
It contains twice the genetic information of its parents.

Answers

Answer:

it contains twice the genetic information of its parents

Explanation:

each parent gametes that will be responsible for fertilisation have a half number of chromosomes

differentiate the types of muscle- skeletal, cardiac, smooth

Answers

Answer:

Skeletal muscle moves bones and other structures. Cardiac muscle contracts the heart to pump blood. The smooth muscle tissue that forms organs like the stomach and bladder changes shape to facilitate bodily functions.

Explanation:

Answer:

cardiac muscles perform involuntary muscular movements of the heart, aiding the heart to pump blood throughout the body, while skeletal muscles perform voluntary muscular movements of bones, aiding physical movements of the body such as walking, running, and writing and smooth muscles perform an involuntary muscular movements of internal organs, aiding functions of the body such as digestion, urination, and breathing.    

HELP ME PLEASE!!!! ILL MARK YOU BRAINLEST

how is rising sea levels important?

Answers

Answer:

Rising sea levels greatly affect the environment negatively. Flooding or erosion of deltas are all disastrous. It is important to be aware of the effects of rising sea levels to find a way to prevent the continued rise.

Explanation:

Why does the land on earth appear to be stable when in fact it is changing?

Answers

The surface of the Earth is dynamic, and landforms change throughout time as a result of weathering and other surface activities.
Example of tectonic plates: Plates can move at about 2.5 cm per year, about the speed that your fingernail grows. Apart from the sudden movements that we feel during earthquakes, it is difficult to feel the continents move because we are moving at the same slow velocity as the continents. It is similar to being inside a car moving at 120 km

Same reason we are stable on earth - because we are all moving together so, we(the earth and people) are stable and still relative to each other this is similar to being in a car with someone, racing 60 mph down the expressway the passenger and the driver appear to be not moving, relative to each other

Which of the following best explains why few impact craters are found on earth?

A. Impacts on earth do not form craters.

B. Erosion has erased most of the impact craters on earth.

C. Most impacts occurred before earth was formed.

D. Few impacts have occurred on earth.

Answers

Answer:

i think it would be C

hope that helps if not i can change it

Explanation:

A hormone that promotes gluconeogenesis in the liver is:.

Answers

Answer:

Glucocorticoids

Explanation:

A hormone that promotes gluconeogenesis in the liver is glucagon.

EXTRA:

Meanwhile, insulin promotes the uptake of glucose into cells to reduce the level of glucose in the blood.

These two hormones work together two regulate your blood sugar

Hope this helps!

Is the "Kingdom" level more specific or less specific then the "Domain" level?

Answers

Answer:

It is less specific. I know it can be hard to memorize all of the taxa but I just try to use a mnemonic (which I included below)

Explanation:

Domain

Kingdom

Phylum

Class

Order

Family

Genus

Species

*Remember that in order to give an animal a scientific name we use the genus and species. Scientific names are always italicized and the Genus will be capitalized while the species is lowercase. The genus comes first.

Here is a mnemonic to help memorize the 7 taxa (Taxa is just the fancy word for each group in our classification system) Daring Kings Play Cards On Funny Green Stools.

Tip: The top of the category is the broadest and the further down you go, the more specific your categories get.

                      I hope this helps! ;)

Answer:

Yes. Less specific. Kingdoms are slightly more specific than Domains. Remember that living things are always divided into 5 kingdoms.

AnimalsPlantsFungiProtistMonera

An easier way to remember this mnemonic sentence, Any popcorn for perfect movies? Try writing it down with the meaning behind it! It will help you a lot. And remember the levels of classification:

DomainKingdomPhylumClassOrderFamilyGenusSpecies

The higher the list is, the less specific, the lower, the more specific. You may want to write down this mnemonic sentence as well, to help you remember the levels of classification; Did king Philip come over for grape soda?

is the following sentence true or false? Changes in chromatin structure and histone DNA binding are associated with changes in gene activity.

Answers

Answer: The correted answer is true

Explanation:

Changes in chromatin structure and histone DNA binding are associated with changes in gene activity. True)

Plants release scents that attract pollinating insects to them. These adaptations primarily help the plant to _____.

A
find food


B
find water


C
protect themselves


D
reproduce

Answers

Answer:

I believe D, because pollen is used for reproduction.

Reproduce. This attracts pollinators which helps the plant spread its genes because they can’t walk around and do it themselves :)
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Which of the following inequalities is correct? (I WILL GIVE BRAINLIEST) Match these items.1. gathers sound middle ear 2. hammer, anvil, stirrup cochlea 3. cavern-like bone with tiny hairs and fluid eardrum 4. membrane outer ear 5. make greater amplify Simplify the expression. Write your answer as a power.The simplified expression is The sum of squares of lengths of the two sides of a rectangular field is 25m2.Their difference is 1m .what is the length of each side of the field can anyone help with this? Out-of-pocket spending in a country for health care increased between 2003 and 2008. The function f(x) = 2573e^0.0359x models average annual expenditures per household, in dollars. In this model, x represents the year, where x = 0 corresponds to 2003 . (a) Estimate out-of-pocket household spending on health care in 2008 .(b) Determine the year when spending reached $2783 per household. Which conditions will increase the rate of a chemical reaction?. please some one help If AOC = (4x -16) and BOC = 2(x + 20), Determine the value of x. Which compound below will readily react with a solution of bromine consisting of 48% hydrobromic acid and 30% hydrogen peroxide? why did colonists feel the Articles of Confederation were necessary even though the Declaration of Independence was already written? If you were a forensic scientist and you were called to a crime scene to see if drugs were present, what would you do to determine this? Correctly installed tubing is installed in a neat fashion with bends that follow existing _____. Group of answer choices rules contours trends assumptions Why would a scientist need to know if there was a volcanic eruption about to happen? 30 POINTS! Explanation too, please! Point A' prime is the image of point A under a rotation about point P. Determine the angles of rotation. Choose all answers that apply: (Choice A) 90 degrees clockwise (Choice B) 90 degrees counterclockwise (Choice C) 180 degrees (Choice D) 270 degrees clockwise (Choice E) 270 degrees counterclockwise Find the decimal expansion for 5/12 Draw the product of the reaction. Draw any hydrogens on oxygen and nitrogen, where applicable. Are the expressions 5(3a+2) and 15a+2 equivalent? Justify your answer.SOLVE equations, SHOW WORK, AND EXPLAIN John Travolta flew his plane last weekend. What would be the angle measure ofx when his plane reached an altitude of 2500m? Who was Benjamin Banneker?O a slave of Thomas JeffersonO an early sharecropperO the first black civilian employee of the United StatesO one of the writers of the Declaration of Independence