Which statement best explains why cell differentiation is essential to the structure and function of multicellular organisms?
It makes the cells grow larger as the body grows.


It creates the specialized cells needed to form tissues and organs.


It fixes mutations in DNA that were created during replication.


It produces the proteins needed for chemical reactions to keep the body moving.

Hi! I believe the answer is D. The sun's gravity keeps the earth from floating away (which is what the blue arrow represents). It's being constantly pulled towards the sun, keeping it in orbit (represented by the purple arrow)
I'm not quite sure what the pink arrow is supposed to be
Let me know if you still don't understand :)

Answer:

Ground water

Explanation:

Potable water refers to drinkable water or water which is safe to drink

Option B is correct

Answer:

Photosynthesis creates the carbohydrates in the ecosystem.

Explanation:

Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants.

Answer:

eukaryotic

Explanation:

Warming, add moisture and trap depris are the three ways the mucous membranes alter the incoming air.

Nasal mucous membranes are lined with small blood vessels that help to warm as well as humidify the air you breathe. They are also lined with cilia which is a tiny hair-like structures that help to trap the debris that you breathe in during inhalation.

So we can conclude that warming, add moisture and trap depris are the three ways the mucous membranes alter the incoming air.

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Answer:

Label E

Label E

Explanation:

Label ELabel ELabel ELabel E

Answer:

The sun is a star, this means the sun generates energy from a process called nuclear fusion. During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons. Hydrogen nuclei fuse to form one helium atom. During the fusion process, radiant energy is released.

In the north, the display is called aurora borealis, or northern lights. In the south, it is called aurora australis, or southern lights. The activity that creates auroras begins on the sun. The sun is a ball of superhot gases made up of electrically charged particles called ions. I got u bro.

Explanation:

Answer:

Explanation:

Rods and cones are similar in that, they both are parts of the retina and are responsible for vision. Other than that, their functions are complete opposite of each other.

Answer:

phosphorus

Explanation:

Since Phosphorus is an essential component of phospholipids, nucleic acids, phosphoproteins (casein), high energy phosphate esters (ATP), hexose phosphates, creatine phosphate, it also provides strength to the exoskeletons of clams and oysters.

Answer:phosphorus

Explanation:

Based on inheritance patterns, se_x-linked traits are present on the se_x chromosomes while autosomal traitsare found on the autosomes.

A dominant allele is a copy of a gene which always appears in every generation.

A pedigree is a chart that shows the inheritance of triats in generations of families.

Based on the pedigree given:

In the pattern of inheritance, all males receive their X chromosome from their mother.

Se_x-linked pedigrees differ from autosomal pedigrees because the traits are located on the se_x chromosomes.

An autosomal dominant trait require only one allele.

Based on the pedigree, the genotype of the offspring are hH, hH and hH based on the genotype of the parents.

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Condenser Lens is located under the stage which is responsible for focusing the light on the specimen.

The condenser lens collects light from sources and redirects the light beam so that it falls on the projector's lens system.

So we can conclude that condenser Lens is located under the stage which is responsible for focusing the light on the specimen.

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Answer:

Veins arteries and capillaries

The structures in the human body that carry out some of the same function as xylem and phloem are veins, arteries, and capillaries.

Xylem and phloem are the vascular tissues that transport water, minerals, and food from the roots to the leaves and from the leaves to the roots respectively.

Xylem and phloem represent homology with the veins and arteries. Veins carry blood back towards your heart, while arteries carry blood away from your heart.

Capillaries are blood vessels that carry the oxygen and nutrients from the blood and transport them into the tissues and organs. It also requires the elimination of the waste products away from your tissues.

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Answer:

this might not be right I don't know much about earth science but I believe your answer is A) D)and possibly B)

Explanation:

I hope this is right!

Answer:

its b and c

Explanation: its simple common sense like are you serious right now

We are changing the content in the formula to the content in cell D8.

The question refers to the cells that we find in computer data processing programs that include a spreadsheet as the main tool.

In these programs we can edit each cell with different information and include formulas so that the cell data depends on others.

According to the situation presented, the first action we performed was to establish a formula in cell C8 to obtain the result of an operation in that cell. Later, we change it to cell D8, then we will see the result of that same operation in cell D8.

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The correct statement is liver cells possess transcriptional activators that are different from those of lens cells.

Transcriptional activators are specific protein sequences capable of activating gene expression.

These transcription factors (transcriptional activators) act to regulate gene expression in target cells.

Transcriptional activators are factors that enable the expression of certain genes in particular cell types.

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Answer:

see below

Explanation:

their roots respond positively, growing down, into the soil, and their stems respond negatively, growing upward, to reach the sunlight.

Gravity influenced the growth of germinating corn seeds by providing the directional cue for root growth and promoting proper orientation of the plant.

Gravity plays a crucial role in plant growth and development, particularly during the germination of seeds. When a germinating corn seed is placed in a gravitational field, gravity acts as a guidance mechanism for the growing seedling.

In response to gravity, the root of the germinating seed grows in a downward direction, a process known as gravitropism or geotropism. This downward growth of the root is called positive gravitropism. The root responds to the gravity stimulus by redistributing auxin, a plant hormone, towards the lower side of the root. This causes cells on the lower side of the root to elongate more than cells on the upper side, leading to downward growth. The downward growth of the root helps anchor the plant in the soil and facilitates water and nutrient absorption from the ground.

Simultaneously, gravity also influences the shoot of the germinating corn seed. The shoot exhibits negative gravitropism, where it grows upward against the force of gravity. This upward growth is counterbalanced by the downward growth of the root, allowing the plant to establish proper orientation.

Without the presence of gravity, the germinating corn seeds would not be able to establish the proper orientation and direction of growth. The root may not grow downward, leading to irregular and inefficient water and nutrient absorption. The shoot may not grow upward, resulting in an abnormal and compromised overall plant structure.

Therefore, gravity serves as a crucial external factor that guides the growth of germinating corn seeds, ensuring proper root development, anchorage, and shoot orientation for successful plant growth.

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The section of DNA being used to make the strand of mRNA is known as the transcription unit.

Transcription units are base sequences of DNA that make up a single mRNA molecule during the process of transcription.

During gene expression, genes are first transcribed to genetic codes in mRNA molecules before being translated to their respective proteins.

Each unit of transcription represents a gene along with non-coding base sequences in DNAs, otherwise known as introns.

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Explanation:

If DNA replication does not occur, then the cell cycle will not proceed to the next stage and the subsequent division will not happen. It will lead to cell death.

Answer:

Most electricity is generated with steam turbines using fossil fuels, nuclear, biomass, geothermal, and solar thermal energy, etc.

Explanation:

Answer:

look im not 100% sure but i beleive it would be Carbon Dioxide and Sunlight

Explanation:

Sorry if im wrong

Answer:

25

Explanation:

In DNA, Guanine pairs with Cytosine, and Thymine pairs with Adenine. This tells us that there are equal numbers for each Guanine and Cytosine, and Thymine and Adenine. When there's 35 Guanine, there should be 35 Cytosine that goes with it. 120 - 2(35) = 50. The remaining 50 nucleotides are Thymine and Adenine, and since they are the same number, divide 50 by 2. 50 ÷ 2 = 25. There are 25 thymine in the sample of DNA.

Answer:

Answered below

Explanation:

the plasma membrane of a skeletal muscle fiber is called the sarcolemma. The sarcolemma invaginates into the cytoplasm of the muscle cell (sarcoplasm). This forms membranous tubules that pass across the muscle cells.

Since fibrous roots grow from the side of monocot plants, the plant roots observed on the corn stalk are fibrous roots.

Fibrous roots are roots of plants which are usually seen on the surafce above ground and which grow from the side of plants.

Monocotyledons such as corn have fibrous roots.

The fibrous roots help to provide support and strength to the plant.

Therefore, the plant roots observed on the corn stalk are fibrous roots.

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A scientific question can be answered by  experiments. The most scientifically testable question is; can simple organic molecules form spontaneously in an oxygen-free atmosphere?

We say that a question is scientifically testable  if its answer can be found by carrying out a scientific research on the question.

Now having seen the question and considering all the options listed, the most scientifically testable question is; can simple organic molecules form spontaneously in an oxygen-free atmosphere?

Missing parts:

Which of the following questions about the origin of life on Earth is most scientifically testable? (A) Why were the earliest life-forms created using only twenty amino acids? (B) Did life originate to make the universe a better place? (C) Was catalytic RNA used by ancient organisms as a stepping stone to acquire protein enzymes? (D) Can simple organic molecules form spontaneously in an oxygen-free atmosphere?

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Answer:

The acquired immune system produces special molecules (known as antibodies) with the help of immune cell system that protects the body against a specific intruder. After the body has been exposed to the invader, cells called B lymphocytes produce antibodies. Antibodies remain in your child's system.

Answer:

A

Selective pressures( Predators, less food etc. ) will cause the less fit variation of a species to decrease in population, causing them not to be able to reproduce. The more fit variation would be able to reproduce more so that over time, the individuals in the species will have the features of the more fit variation.