Which is present only in Eukaryotic cells?
A. Cell membrane
B. chromosomes
C. DNA
D. nucleus

Answers

Answer 1
D. nucleus, eukaryotic is plant & animal cells
Answer 2

An eukaryotic cell has a well-defined nucleus which is not present in the prokaryotic cell. Thus, the correct option is D.

What is a eukaryotic cell?

A eukaryotic cell is a true cell. This cell is different from the prokaryotic cell. The eukaryotic cell has all the membrane-bound organelles such as mitochondria and chloroplast. Eukaryotic cell has a well-defined nucleus which is absent in the prokaryotic cell.

Nucleus is known as the brain of cell. Nucleus contains all the genetic information of the cell in the form of DNA (deoxyribonucleic acid).

Eukaryotic cells are present in all the higher organisms including plants and animals.

Therefore, the correct option is D.

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Related Questions

The diameter of the large intestine is larger than that of the small intestine, and the large intestine is also longer than the small intestine. True or False.

True.
False.

Answers

Answer:

False

Explanation:

the small intestine is both larger and longer than the big intestine.


If there is a change in the sequence of a DNA molecule, it may cause a different _______ to show up in the protein.
A) Codon
B) Protein
C) Amino acid
D) RNA molecule

Answers

Answer:

I think its Amino acid - C

Answer:

It i C

Explanation:

If Julie used a syringe on her gelding she is MOST likely

Answers

Answer:

Giving an injection or drawing body fluids

Answer:

Giving an injection or drawing body fluids.

Explanation:

Look at the bean from Days 4-6. Use these data to explain how natural selection changed the number of dark red walking beans over time.

Answers

Answer:

When the volcano erupted, the dark red walking beans were easier to see. Thus, more dark red beans were eaten during days four, five, and six. If the pollution continued, there would be fewer and fewer dark red walking beans over time.

Natural selection changed the number of dark red walking beans over time because, after the volcanic eruption, the dark red beans were clearly visible to predator's eyes; hence, they were picked and eaten by them. As a result, their population decreases.

What is natural selection?

Natural selection is applied to nature where the environment selects animals and plants that it wants to keep, and this is the result behind diversity in the different ecosystems. The availability of resources in nature prevents the desert from having the same diversity as the tropical rain forest. Nature selects the organisms that are best suited to the environment and reproduces to produce future generations.

Here, the dark red beans were not initially visible, but they became readily visible after the volcanic eruption, which let the predator see them and eat them. Slowly, due to this, their population declines, and this happens due to natural selection.

Hence, as the dark red beans are clearly visible to predators' eyes, and their population is declining.

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what is the formula for Glucose

Answers

Answer: Glucose also called dextrose one of a group of carbohydrates know as simple sugars.

Answer:

Explanation:

C₆H₁₂O₆

?

help.. Approximately what percentage of our tropical rain forests have
already been destroyed?
a. 10 percent
b. 20 percent
c. 50 percent
d. 60 percent

Answers

60%

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60% of our tropical rain forests have already been destroyed.

What are the functions of tropical rain forests?

Tropical rainforests are rainforests that occur in areas of tropical rainforest climate in which there is no dry season – all months have an average precipitation of at least 60 mm.

Tropical Rain Forests are found in warm and humid areas with annual precipitation of over 200 cm and mean annual temperature above 22 degrees celsius.

Tropical rainforests are forests with tall trees, warm climates, and lots of rain. In some rainforests it rains more than one inch nearly every day of the year.

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The rectal thermometer is the BEST instrument to use when

Answers

Answer:

Taking the animals temperature

Explanation:

Rectal temperatures are more accurate so they might also be used in someone who has severe hypo- or hyperthermia to obtain a more accurate core temperature. ... If someone has a heart condition, inserting a rectal thermometer can stimulate the vagus nerve and cause heart arrythmias (irregular heart beats).

Have a great day

What are abiotic factors? List at least 3 in the environment

Answers

Answer:

In biology and ecology, abiotic components or abiotic factors are non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems. Abiotic factors and the phenomena associated with them underpin all biology.

Five common abiotic factors in the enviroment are atmosphere, chemical elements, sunlight/temperature, wind and water.

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Explanation:

Identify the structures of the digestive system labeled on the diagram to the right. Label F Label G Label H Label I Label J Structures of the digestive system are labeled. Part F is the large organ above and to the left of the stomach. Part G is a tiny organ near the pancreas. Part H is the large intestine. Part I is the rectum. Part J is the anus.

Answers

Answer:

First choice answers :

Label A - Pharynx

Label B - Esophagus

Label C - Stomach

Label D - Pancrease

Label E - Small Intestine

Second choice answer :

  Label F- liver

Label G- gallbladder

Label H- large intestine

Label I- rectum

Label J- anus

100% got them all correct :)

Answer:

liver - Label F

gallbladder - Label G

large intestine - Label H

rectum - Label I

anus - Label J

Explanation:

The answers were already stated in the question, but this is for anyone who may have overlooked it :)

Which best compares body cells and sex cells?

Both body cells and sex cells are formed through mitosis.
Both body cells and sex cells are produced from a diploid cell.
Both body cells and sex cells involve one cell division of the nucleus.
Both body cells and sex cells are involved in producing a zygote.

Answers

Answer:

B)

Explanation:

Answer:

B

Explanation:

ED GE NU IT Y PE OP LE

Give example of SUTAINABLE USE and UNSUSTAINABLE USE of ANY 4 OF THE FOLLOWINGS: Water, Waste, Food, Paper, Energy, Plastic

Help would be really appreciated! Best answer will be marked as brainliest(so try your best)!

Answers

water -
sustainable use is: water systems in the realm of sustainable development may not literally include the use of water, but include systems where the use of water has traditionally been required. Examples include waterless toilets and waterless car washes, whose use helps to alleviate water stress and secure a sustainable water supply
-
unsustainable use is: world's water use may be unsustainable. ... These practices can have an important influence on what scientists call “evapotranspiration,” which is water that is lost to the atmosphere by either evaporating from the Earth's surface or being taken up by plants and later released into the air through their leaves.

food -
sustainable use is: Local & seasonal,
Organic & sustainable farming,
Reduce foods of animal origin & maximise welfare standards,
Excludes fish species identified as at risk,
Fair-trade-certified products,
Promote health and well being,
Food democracy and
Reduction of waste and packaging
-
unsustainable use is: Foods containing high fructose corn syrup (HFCS) are especially bad for the environment. Not only does consumption of HFCS increase the likelihood of obesity and health problems, but production is extremely energy intensive,
Seafood listed in the “avoid” column on the Seafood Watch list and
Factory farmed beef.

plastic -
sustainable use is: Renewable feedstock. Organic materials such as starch and other natural fibers can replace petroleum-based feedstocks, greatly reducing the reliance on carbon-dioxide-emitting fossil fuels,
Reclaimed feedstock,
Recycled feedstock and
Biodegradable materials.
-
unsustainable use is: plastic forks and knives,
plastic shopping bags,
plastic coffee cup lids,
plastic water bottles,
Styrofoam and plastic take out containers,
and, of course, plastic straws.

energy -
sustainable use: renewable energy sources like solar, wind, geothermal, hydropower and ocean energy are sustainable as they are stable and available in plenty.
-
unsustainable use: Most non-renewable energy sources are fossil fuels: coal, petroleum, and natural gas and
Plants, algae, and plankton grew in these ancient wetlands.

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What do you think the pH of water is?

Answers

The pH of pure water is considered to be neutral so it has a pH of 7. However, if you have water that falls below this range, the solutions or substances are considered to be be more acidic than than normal water. On the other hand, if you have water above 7, it is considered alkaline or basic.

In the process of distillation, during condesation the temperature of water decreases Hence absorption of CO2 takes place and some H2CO3 is formed. This is an acid (though very weakly) so water turns acidic. Double distillation enhance this so theoritical pH is 7.0 but practically less than 7.0 (6.2 to 6.8)

What is the lowest starting height from which the skater can start to successfully complete the ramp? Use the data from your chosen ramp design from the "Testing" section of the lab. Be sure to include if your results support your hypothesis.

Answers

Answer:

The lowest starting height the skater can be so that he complete the loop is 6 meters.

Explanation:

By using data from your chosen ramp design from the "Testing" section of the lab. The lowest starting height the skater can be so that he complete the loop is 6 meters and the height of the skater is genetic factor.

What is genetic drift?

The term genetic drift has been defined as the change in the frequency in the gene variant which has been already existed and in the population the change that takes place is random. There are mainly two types of genetic drift and these are population bottlenecks as well as the second one is the founder effect.

The term hormones means that they are the chemical messengers of the body as they use to travel in the bloodstream to the tissue or the organs. The function of hormones is slow just over the time and they have impact on growth as well as development.

The Adrenal glands are also known as suprarenal glands and they are small in size and they have a triangular shape and they has been located just top of the kidneys.

Therefore, By using data from your chosen ramp design from the "Testing" section of the lab. The lowest starting height the skater can be so that he complete the loop is 6 meters and the height of the skater is genetic factor.

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The ability for one substance to dissolve into another is
a) Dissolvability
b) Solubility
c) Solvent
d) Solute

Answers

Answer:

b)solubility

Explanation:

Hope I helped

:D

b) solubility
hope this helps :))

what is the number of chromosomes in body cells, if in germ cells that number is n?​

Answers

Answer:it contain 23 pairs of chromosomes,germ cells only have half the number of chromosomes as a diploid  cell

Explanation:

How are sediment rocks made

Answers

Explanation:

Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension. This sediment is often formed when weathering and erosion break down a rock into loose material in a source area.

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An amino acid molecule includes a central carbon atom bonded to _____, a carboxyl group, and a hydrogen atom.
an amino group and three fatty acids

an amino group and a nucleic acid

a nucleic acid and an R group

an amino group and an R group


HELPPPPP PLEASEEEE

Answers

Answer:

an amino group and an R group

"Each of the 20 amino acids has a central carbon atom with four covalent bonds. These bonds link the carbon atom to an amino group ( NH2 ), a carboxyl group ( COOH ), a hydrogen atom, and an R group. The R group can be a carbon side chain, a hydrogen atom, or a functional group. " -------- from my textbook.

Explanation:

An amino acid molecule includes a central carbon atom bonded to an amino group and an R group, a carboxyl group, and a hydrogen atom.

COMPONENTS OF AMINO ACID:Amino acid is the monomeric unit of protein molecules. They are linked together by peptide bonds to form dipeptide, polypeptide etc.

Structurally, amino acids are made up of three major components namely:

A central carbon atom (C)A carboxyl group (COO)An amino group (NH2)

Therefore, an amino acid molecule includes a central carbon atom bonded to an amino group, an R group, a carboxyl group, and a hydrogen atom.

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How can changes in trophic levels affect an ecosystem’s health and stability?

Answers

Answer:

Changes in the basal levels that are on the bottom of the food chain.

Explanation:

Trophic levels are represented by steps in the food chain. In a simplified diagram, the first basal level is represented by primary producer organisms that include plants and algae. The herbivores are localized in the second place, while in the final levels it is possible to find carnivores and predatory species. It is well known that the changes in the basal trophic levels of this chain (i.e., changes in the first and the second levels) may alter the equilibrium of the food chain and consequently have effects on the stability of the ecosystem.

hi my sky betteljust

Answers

Answer:

pls mark brainliest pls I need one more

Explanation:

How long does adaptation usually take? (Plant)
1.a decade
2.an hour
3.A few days
4.Centuries

Answers

Answer: The answer is (4), centuries

Explanation:

Plant adaptation is a long-term process that occurs over many generations. It is driven by natural selection, which is the process by which organisms that are better adapted to their environment are more likely to survive and reproduce. Hence option D is correct.

The rate of plant adaptation can vary depending on the environment and the plant species. However, it is generally a slow process that takes many years or even centuries to complete.

For example, some plants have adapted to the cold temperatures of the Arctic over millions of years. These plants have developed thick, waxy leaves that help to insulate them from the cold, and they have also developed a slower metabolism that allows them to conserve energy.

Other plants, such as weeds, can adapt to new environments more quickly. This is because weeds are often generalists, meaning that they can survive in a wide range of conditions. They can also reproduce rapidly, which allows them to quickly spread to new areas.

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what is happening during each cycle of PCR?

Answers

PCR is shorthand for a simple but very useful procedure in molecular biology called the polymerase chain reaction. It is a technique used to amplify a segment of DNA of interest or produce lots and lots of copies.
A DNA polymerase enzyme joins free DNA nucleotides together. ... The result of one cycle of PCR is two double-stranded sequences of target DNA, each containing one newly made strand and one original strand. The cycle is repeated many times (usually 20–30) as most processes using PCR need large quantities of DNA

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6. How can you tell that catalase has been added to hydrogen peroxid​

Answers

Answer: Oxygen bubbles will form, and that's when one can tell that catalase has been added.

a mimic octopus has lost some of its arms, and is in the process of regeneration. Describe a scenario where this ability would provide the octopus an advantage in its environment.

Answers

Answer:A shark tries to eat an octopus they fight but the octopus ends up victorious. The shark only got away with one tentacle,

But fortunately for the octopus it will grow back.

The ability of the octopus arm to regenerate is an advantage in the case of

interaction with larger predators.

The octopus is a marine organism which is characterized by the eight arms.

It uses these structures to find food for its survival. The octopus are eaten by

larger predators such as shark, whale etc.

During the interaction with these large predators, there is a possibility of its

arms being eaten alone instead of its whole body which provides it with the

advantage of survival and regeneration of arms for subsequent finding of

food.

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How does the digestive system interact with the circulatory system?

A.
Oxygen and carbon dioxide are exchanged by organs in the digestive system, and the gases are carried to the rest of the body by the circulatory system.
B.
Nutrients and gases are absorbed by organs in the circulatory system. Then, they are transported to all parts of the body by organs in the digestive system.
C.
Nutrients taken in and broken down by the digestive system are carried to various parts of the body by the circulatory system.
D.
Messages sent as electrical impulses from the digestive system are transported throughout the body by the circulatory system.

Answers

Answer:

C

Explanation:

I just had the test

In a beetle species the red color is dominant over the white color. What is the genotype of any red beetle resulting from this species?


1Points

A

red and white alleles present on one chromosome


B

red and white alleles present on two chromosomes


C

a red allele present on both homologous chromosomes


D

a red allele present on at least one of two homologous chromosomes


Genetic Engineering has led to genetically modified plants that resist insects, pests and bacterial and fungal infections. Which outcome would most likely be a reason why some scientists recommend caution in planting genetically modified plants?


1Points

A

improved agricultural yield and profit


B

increased genetic variation and diversity


C

reduced pesticide and herbicide use


D

unplanned ecosystem interactions

Answers

Answer:

D. a red allele present on at least one of two homologous chromosomes;

D. unplanned ecosystem interactions

Explanation:

A dominant allele or trait would always mask the expression of a recessive trait when both are present in a pair. The only way a recessive trait can express itself is when it is in a homozygous state. Since red color is dominant over white color in the beetle species, the genotype of any red color species would have a red alelle present on at least one of two homologous chromosomes. For example, if red allele is represented by R and white allele is r, the genotype of a red nettle species would be RR or Rr.

In the second question concerning the most reason for concern that some scientists recommends caution be taken regarding genetically modified plants is that in the process of introducing new genes into a population, unforseen and unplanned disruption of the ecosystem may occur as a result of interaction with the ecosystem that these process and it's product may present.

Use the drop-down menus to complete each sentence.
А
is an organism that eats other organisms to gain energy; it is also called
A
is an organism that makes its own food; it is also called
is an organism that breaks down waste and dead organisms.


Please help I will try to mark u as brainliest

Answers

1. Carnivore
2. Producer
3. Decomposer

Answer:

consumer

a heterotroph

producer

an autotroph

decomposer

Explanation:

I got it right

What is the function of the spinal cord?

It connects the brain to the rest of the body.


It stores information about the rest of the body.


It connects the frontal and parietal lobes.


It stores information about the spinal nerves.

Answers

Answer:

It connects the brain to the rest of the body.

Answer:

It connects the brain to the rest of the body .

Explanation:

The function of spinal cord is to connect the brain to the rest and transmit the signals released by brain to rest of the body of better function .

What was the purpose of Miller and Urey's experiment?
A. To determine where genetic information is stored in prokaryotes
B. To measure the number of biological molecules on Earth
C. To find out if archaea and eukaryotes had a common ancestor
D. To see if biological compounds could form spontaneously on early
Earth

Answers

The answer is either A or C

Answer:

D. To see if biological compounds could form spontaneously on early Earth

I NEED YOUR HELP!!! Explain the changes that occur as a tadpole becomes an adult frog or toad.

Answers

Answer:

Sample Response: Tadpoles have fins, gills, and a two-chambered heart, similar to fish. As tadpoles grow up, they develop legs, lungs, and a three-chambered heart. The tail is reduced in size and lost completely as they prepare to leave the water.

Explanation:

During metamorphosis, a tadpole's gills and tail disappear, hind legs develop first, followed by front legs, and lungs replace gills, resulting in an adult frog or toad.

What is Metamorphosis?

Metamorphosis is a biological process that describes the transformation of an animal from one developmental stage to another, such as a tadpole becoming a frog or a caterpillar becoming a butterfly. In frogs, metamorphosis involves a series of changes that occur as the tadpole develops into an adult.

During this process, the tadpole's gills and tail disappear, hind legs develop first, followed by front legs, and lungs replace gills. The skin also thickens and changes, and the digestive system adapts to a new diet. Overall, metamorphosis is a critical part of the life cycle of many animals and allows them to adapt to new environments and ecological niches.

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The strong attraction between water molecules is called—-
A-cohesion
B-Magnetism
C-Electricity
D-Polarity

Answers

Answer:

Cohesion

Explanation:

cohesionnnnnmnnnnnn nnnnnxndndjdjdjdjd
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Grouping 12x3 9x2 + 4x - 3? which best describes how the graph of g(x) =1/9 Can someone help me with this puzzle A recent start-up company, which we will call Dronegistics, has developed an innovative unmanned aerial vehicle, or drone. The company plans to sell its drones to companies who would use them to make commercial deliveries within congested urban areas. Dronegistics has identified several markets in Asia as having high commercial potential. Japan and Singapore are perceived to have the strongest market potential currently, but mainland China, Thailand, and Malaysia are perceived to have strong and growing potential over time, even if their potential may not be as strong currently. Despite expectations that several other firms will introduce competitive products in the near future, which will have an impact on the attractiveness for later entrants, Dronegistics lacks the experience and resources to enter more than one Asian market at a time. The decision-making challenge facing Dronegistics incorporates all of the following location clocks associated with timing decisions EXCEPT the:__a. firm clock.__b. location clock.__c. incentives clock.__d. competitive clock. Compare AND contrast primary and secondary succession. PLEASE HELP!!! Will mark as brainliest!In Linneaus's book Systema Naturae, minerals were originally included while classifying living things. But, minerals were later removed from this classification. What characteristic of science does this show? A. Scientific knowledge is rigid. B. Scientific knowledge is permanent. C. New evidence emerges by chance. D. New interpretations are a part of science ASAP! GIVING BRAINLIEST! Please read the question THEN answer CORRECTLY! NO guessing. Show your work OR give an explaination. Which equation represents the relationship between the angles in this figure?148+b=90148+b=1802b+148=902b+148=180What is the value of b? ___ degrees Describe the advantage and the disadvantage shared by both sole proprietorships and partnerships.HELP I NEED THIS ANSWER NOW what are the awsers so Malala achieve3000 article? what is the area of a shape fill in the table of values for y=2-xX/ -3 0 5Y Pls help with this it is real quick. Please help me in the question Below.Am new to this chapter and I don't understand it too well.Please help me The fifth term of an arithmetic sequence is 96. Which rule could define the sequenceAn=5n+96An=6n+18An=18n+6An=96n+5 A. Describe the flow of migration for China at the local (sub-national) level. B. Describe the flow of migration for China at the global (international) level.C. Explain one possible limitation in calculating population density arithmetically for a country such as China. D. Explain what calculating Chinas agricultural density might reveal about a provinces wealth.E. Explain one social, economic, or environmental benefit of using physiological density to calculate population density in China.(help me in whichever you can answer and 3-5 sentences please) Despite being farther from the sun and mercury, Venus has a much warmer temperature. What accounts for Venuss temperature being higher than Mercurys? Also if anyone is in environmental science and can help me with the answers I would appreciate it. You can type 36 words per 18 minute. How many words can you type in 2 minutes? 1. What is the first step of protein synthesis? what is the measure of angle WZY in the given figure?a.)25b.)40c.)60d.)70please help asap!!!!!!!!!!!!!