How Do Eukaryotic and Prokaryotic Cells Differ?

Answers

Answer 1

Answer:

The cell nucleus is the fundamental feature that distinguishes eukaryotic cells from prokaryotic ones. A membrane surrounds the nucleus in eukaryotic cells, separating the DNA inside from the cytoplasm and other organelles. The nucleus of prokaryotic cells is not enclosed by a membrane, thus it is not a genuine nucleus. The nucleoid portion of the cytoplasm is where prokaryotic DNA is found. In comparison to eukaryotic cells, prokaryotic cells are generally smaller and less complicated.

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Answer 2

Answer: The difference between eukaryotic and prokaryotic cells is that eukaryotic cells are those which have a membrane-bound nucleus that contains genetic material, as well as organelles that are also membrane-bound. Whereas, prokaryotes are cells that don’t have a nucleus or membrane-encased organelles.


Related Questions

Why do animal cells not need central vacuoles?
A: Animal cells are round.
B:Animal cells have cell walls.
C:Animals do not produce their own food
D:bodies have skeletons.

Answers

Answer:

B:animal cells have cell walls

Cellular Respiration is the process of what?

A. The release of energy from food.

O B. Producing oxygen at the cellular level.

C. Breathing.

D. The creation of food, powered by the energy of the sun.

Reset Selection

hen

Answers

Answer:

The answer is B

Explanation:

Think of it this way; Respiration = Breathing and we are on the cellular level

Cellular respiration is the process of releasing energy from food. The correct option is A.

What is cellular respiration?

Cellular respiration is the process of breaking down food molecules into simpler forms to produce energy in the presence of oxygen. The oxygen is added to the food to produce energy and release carbon dioxide and waste material out of the body.

Oxygen is taken from the environment, and they are attached to the hemoglobin molecule of the blood and taken into the body, then this oxygen is used in the metabolic function of the body.

Breathing is the process of getting air into the lung and out of the lungs. It is not a part of cellular respiration.

Thus, the correct option is A. The release of energy from food.

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22. An astronaut on the space station tests whether gravity affects the productivity of tomato plants. What
is the independent variable in this experiment?

Answers

When conducting an experiment, the independent variable is always the one that produces or causes an effect or reaction on the dependent variable. In the exposed situation, the independent variable is gravity.

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During an experiment, you need to consider all the variables involved.

Independent (manipulated) variable: Refers to all the variables in an experiment that provoke a response in another variable. An independent variable is the one that changes or is controlled and modified to analyze how another variable responds to it. The researcher changes the independent variable to observe its effects on the dependent variable. Usually, the independent variable is represented by the X letter. In the exposed example, gravity is the independent variable, and influences the productivity of tomato plants. Dependent variable: Refers to the variable, which response depends on any change in the independent variable. It represents a quantity of something which value depends on how the independent variable is modified. The change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. It is usually identified by the letter Y. Controlled variables are kept constant in the control groups and the experimental groups. Unlike the independent variable, the controlled variables do not influence the results. These variables do not affect the response of the dependent variable.

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When a pathogen is growing and multiplying within or on a host (which may or may not result in overt symptoms) this is known as a(n) ______. Multiple choice question. infection latent infection infectious disease opportunistic infection

Answers

Answer:

Infection would be the answer for the blank

DNA Polymerase is responsible for:

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The process of dna replication

Which of the following represents a population?
1 point
a single pigeon in a given area
a group of pigeons in a given area
a group of pigeons, mice and trees that live in a given area
all living things and non-living things in a given area

Answers

Answer:

A single pigeon in a given area

Explanation:

It tells us the actual number of pigeon in a specified area

should shellfish, which is labeled frozen but reicieved thawed, be accepted

Answers

No, bacteria can grow on and in it and can make you sick. Especially if warm.

¿Qué acciones podrían realizar para poder reducir los gases de efecto invernadero como el Co2?
AYUDA POR FAVOR
DOY CORONITA Y 5 ESTRELLAS

Answers

Explanation:

Ser conscientes del impacto de las emisiones de CO2. ...

Reducir el uso del coche privado. ...

Practicar una movilidad sostenible. ...

Aumentar nuestra eficiencia energética. ...

Consumir energía renovable. ...

Seguir una dieta con baja huella de carbono. ...

Convertirse en un consumidor sostenible.

Más elementos…

y’all i need help please help

Answers

Answer: It is (D) Skin

Explanation: Skin can absorb materials, it also protects our body, it also regulates our body temp.

Skin does all of those things

describe how the structure of the cuticle, palisade mesophyll, spongy mesophyll and guard cells are adapted for their functions​

Answers

Answer:

Cuticle - It also has a waxy material that protects the leaf from attacks by bacteria, protects inner tissues from mechanical damage and acts as a water proof layer to prevent excessive water loss.

Palisade mesophyll - They have many chloroplasts used to absorb light energy used for photosynthesis.

Spongy mesophyll - The cells are loosely packed together leaving air spaces that allow for air circulation and gaseous exchange.

Guard cell - They have thick inner walls and thin outer walls to control the opening and closing of the stomata.

describe the role of enzymes in seeds germination​

Answers

Answer:

Enzymes such as amylase ,protease and lipase are liable for solubilizing spare food materials in form of starch, protein and lipids correspondingly

in seed and deliver energy and other fundamentals food materials to germinating embryo.

The seed proteins are catalyzed by protease enzyme and break it into amino acid and peptides that a e transferred to growing embryo.

The amino acids obtained from metabolism of the proteins are further used in biosynthesis of enzymes,hormones,proteins, pyrimidines and Purine bases.

The starch is catalyzed by enzyme amylase that provides the food materials for growth and development of embryo . Similarly lipase are enzymes that are responsible for metabolism of the triacylglycerols into glycerols and fatty acids.This is also the source of energy for growing embryo

how many different versions of a gene are carried in a single normal cell?

Answers

Answer:

two versions of a gene are carried in a single normal cell called alleles

What is an advantage of electron microscopes compared to light microscopes?
They have a much higher power of resolution.
They can be used to view live specimens.
They are inexpensive and commonly found in classrooms.
They are helpful during dissections.

Answers

Answer:

They have much higher power of resolution.as compared to light microscope.

What type of evolutionary adaptations did plants acquire to allow them to grow in areas that were not directly on a water source?

Answers

Answer:

Plants developed roots to absorb water from the ground

Answer:

Vascular seedless plants evolved specific structures to transport and hold fluids, reducing dependence on water sources.

Explanation:

If given the ability to hold on to water, the plant does not have to frow directly on a water source.

Well this isn’t biology this is earth science but it doesn’t have the option.... 1. What geologic processes must have occurred for fossil ammonites (relatives to the nautilus that dominated oceans hundreds of years ago) to now be found in rocks at the highest mountains on Earth??

2. What would our planet look like if it contained no radioactive isotopes within it? What would it look like if radioactivity were producing twice as much heat within Earth’s interior?

Answers

The answers are that the geological process responsible for fossils being found on high mountains today is called Orogeny Tectonics. With no radioactive isotopes, the Earth's geography would be vastly different and void of life. If radioactivity produced twice as much heat the earth would become unstable.

The discovery of fossil ammonites within rocks at the highest mountains on Earth is due to orogenic plate tectonics. Plate tectonics is the name we use to describe a process in which pieces of the earth's crust move and often slam into each other, causing one of these to pile onto the other.

This can lead to the formation of mountains and mountain ranges. This process helps to explain why fossils of ammonites known to dwell in the ocean can be found in mountains.

Radioactive isotopes, or better yet, the decaying of radioactive isotopes, are responsible for generating most of the Earth's internal heat. The internal heat of the earth is the driving force of plate tectonics and without it, much of the geological activities responsible for the earth's current geography would not have happened.

Mountain ranges would not have formedPlate tectonics would not have caused the formation of the continents we know todayThe earth would lack a magnetic field to defend against ionizing radiation from the sunLife would likely not have evolved.

Radioactive isotopes were vital in allowing for the conditions of the earth at the time that life evolved, and the heat they produce allows the earth to have a molten core and thus generate a magnetic field for protection.

Now, if the heat produced by radioactive isotopes were to double, the  Earth's internal temperature would nearly double. Since this heat is the driving force for plate tectonics, we can expect a sharp increase in the number of earthquakes and volcanic eruptions. These can, in turn, cause tsunamis and changes to the earth's global temperature. Mountains would form continuously and continents may break apart. This instability would make life on earth's surface improbable.

Therefore, the geological process responsible for fossils being found on high mountains today is called Orogeny Tectonics. Without radioactive isotopes, the Earth's geography would be vastly different and void of life. Radioactivity producing twice as much heat would make the earth very unstable.

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Help!

For which reason are various countries reluctant to make firm commitments to make deep reductions in greenhouse gases?


A. They believe reducing greenhouse gases will reduce the standard of

living in their countries.

B. Most of the emissions come from just a few rich nations.

C. They believe reducing greenhouse gases will not make a difference on

climate change.

D. all of the above

Answers

i think the most valid answer would be d

In which way could the results of an experiment have bias?
A)when samples sizes are large
B)an outlier data point is present
C)when sample sizes are chosen at random
D)data that has been evaluated for accuracy

Answers

Answer:

the answer is B if anybody is wondering

Explanation:

The way in which the results of an experiment have bias is an outlier data point is present. The correct option is B.

What is an experiment?

An experiment is a task performed in a hypothesis to prove the results of the experiment.

The experiment needed the required instrument, chemicals, products, etc.

Thus, the correct option is B) an outlier data point is present.

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The operation of the sodium-potassium pump moves ________. A) sodium and potassium ions into the cell B) sodium and potassium ions out of the cell C) sodium ions into the cell and potassium ions out of the cell D) sodium ions out of the cell and potassium ions into the cell

Answers

operation of SODIUM-POTASSIUM PUMP moves sodium ions out of the cell and potassium ions into the cell. The correct option is D.

When a cell membrane moves molecules or ions against a concentration gradient or against an electrical or pressure gradient, the process is called ACTIVE TRANSPORT. Different substances that are actively transported include:

--> sodium ions,

--> potassium ions,

--> calcium ions and

--> some amino acids.

There are two types of active transport which are divided according to the energy that is used to cause the transport. They include:

--> primary and

--> secondary active transport.

PRIMARY ACTIVE TRANSPORT

A typical example is the SODIUM-POTASSIUM PUMP( Na+ - k+). This is a transport process that pumps sodium ions outward through the cell membrane of all cells and at the same time pumps potassium ions from the outside to the inside. This pump helps to:

--> maintain the sodium and potassium concentration differences across the cell membrane

--> establish a negative electrical voltage inside the cells.

The mechanism or OPERATION of the pump involves the following steps:

--> two potassium ions bind on the outside of the carrier protein and three sodium ions bind on the inside,

--> ATpase of the carrier protein cleaves one molecule of ATP, splitting it to Adenosine diphosphate (ADP) and liberating a high-energy phosphate bond of energy.

--> this liberated energy then causes a chemical and conformational change in the carrier protein,

-->this leads to the extruding of three sodium ions (3Na+) to the outside and two potassium ions (2K+) to the inside.

Therefore in the operation of SODIUM-POTASSIUM PUMP moves sodium ions out of the cell and potassium ions into the cell. The correct option is D.

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identiying Parts of Spheres Use the drop-down menus to identify the spheres to which each part belongs.

A lake is part of the ___

Water vapor in the air is part of the___

Glacier and iceburgs are part of the___

The rocky mountains are part of the___

A deer is part of the____​

Answers

Answer:

Answer is

A lake is part of the hydrosphere.

Water vapor in the air is part of the atmosphere.

Glacier and icebergs are part of the cryosphere.

The Rocky Mountains are part of the geosphere.

A deer is part of the biosphere.

Which of the following can a UAV do?
1. Provide information about geography
2. Provide information about soil nutrients
3. Provide information about soil hydration
4. Provide information about plant health

Answers

Answer:

Provide information about geography

Explanation:

UAVs are otherwise known as unmanned aerial vehicles or drones. They are usually remotely controlled and monitored from a screen. They can be flown over a large expanse of land to obtain geographical information such as the topography of an area,  the distance between two points, the height above sea level, and so on.

Except the UAVs are specially designed and equipped with extra features, they cannot be used to obtain information relating to soil nutrients, soil hydration, or information about plant health on a field.

Hence, the correct answer would be option 1,

Answer: Provide information about geography

Explanation:

It's correct

Which of the following is NOT an organ system in the human body?
A. Endocrine system
B. Replicatory system
C. Digestive system
D. Lymphatic system

Answers

B. The replicatory system is not a organ sytem in the human body.

Describe how genetic engineering can improve human health.

Answers

Answer:

Genetic engineering is the change of a combination of genes. It can change how someone can look or discover a deathly disease that they can change into something not so deathly. If a family has a history of cancer, scientists can alter it to make it less easy to get.

Hope this helped.

Quốc gia Đong Nam A nào có sản lượng lúa gạo lớn nhât

Answers

Answer:

Việt Nam

Việt Nam has the greatest rice production of any southeast Asian country.

What is the structure labeled E in the diagram below?

Answers

Answer:

The structure labeled E in the diagram is (B) Cytoplasm

Answer:

Cytoplasm(b)

Explanation:

Question 1 of 25
The overall increase in the amount of carbon dioxide in the atmosphere
directly corresponds with all of the following except.
A. the decrease in the growth rate of some human populations.
B. changing weather patterns.
C. the overall increase in average global temperatures.
O D. the melting of the ice caps.

Answers

A. The decrease in growth rate of some human populations

When a person runs his body temperature goes up why and how it comes to normal

Answers

Answer:

the average person today actually runs then you will notice that your skin temperature is going to go down not up

Explanation:

Genetic variation is more commonly found in sexually reproducing organisms, as compared to asexually reproducing organisms, because
1 point
in asexual reproduction gametes fuse to lead to new genetic combinations
in sexual reproduction the gametes formed are all genetically identical
in asexual reproduction the gametes formed are genetically different
in sexual reproduction gametes fuse to lead to new genetic combinations

Answers

Answer:

In sexual reproduction gametes fuse to lead to new genetic combinations

Explanation:

In sexually reproducing organisms, there are two parents who create genetically diverse offspring.

This occurs because the gametes of the two parents combine to create very unique genetic combinations, which lead to increased genetic variation.

On the other hand, asexually reproducing organisms reproduce without a partner.

Their offspring are identical clones to the parent, so they have much less genetic variation.

So, the correct answer is that In sexual reproduction gametes fuse to lead to new genetic combinations.

A researcher is examining a sample of smooth muscle tissue under a microscope. Which of the following would correctly describe what he sees? (2 points)


Short cells with no striations and one nucleus per cell

Long cells with no striations and one nucleus per cell

Long cells with striations and no nuclei

Short cells with striations and no nuclei

Answers

The answer would be B

Tami is doing experiments on three different unknown solids. She understands that treating them in different manners might result in changes to their bonding, and these changes may help her identify unknowns. She treats samples of each solid four different ways: heating them, letting them cool, shining bright light on them, and hitting them once with a hammer. The chart shows what happened to each sample.



Based on how they each acted in the trials, which substance(s) would most likely be metallic?

A and B
B
C
A and C

Answers

the answer is (C)……….
the answer would be c

B is wrong need help

Answers

Answer:

its A i think

Explanation:

trust me bro

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What are the common factors of 24 and 60 I found a dollar on the street, so I went to the candy shop. Simple O Compound Complex de O Compound-Complex We are here, we are here this evening because we are tired now. And I want to say that we are not here advocating violence. I want it to be known throughout Montgomery and throughout this nation that we are Christian people . . . . The only weapon that we have in our hands this evening is the weapon of protest. -Dr. Martin Luther King, Dec. 5, 1955Read this excerpt from one of Martin Luther King's speeches. 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Which of the following statements is correct regarding Mr. Segal's registration status under the Uniform Securities Act?-Because Joe is meeting with existing clients who are not permanent Florida residents, he does not have to register as an IAR in the state of Florida.-Because Joe is employed by a covered adviser, no registration is necessary in the state of Florida.-Because Joe is employed by a covered adviser, he is only required to register with the SEC.-Because Joe may be meeting with individuals who are not existing clients and may be Florida residents, he must be registered in the state of Florida as an IAR. 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