1) Why is embryonic stem cell research controversial?
2) What is a potential source of stem cells that is not controversial?

Answer:

Helloooo

C. When they die

Explanation:

thanks ☺️

Answer:

Efecto adverso sobre la salud.

Explicación:

El crecimiento lento de los niños afecta la salud de los niños, haciéndolos más susceptibles a enfermedades e infecciones, pero también afecta su desarrollo mental y físico. Las inyecciones de hormona del crecimiento y los medicamentos de reemplazo de la hormona tiroidea son tratamientos que se usan para tratar el crecimiento lento en los niños. La deficiencia de la hormona del crecimiento se puede tratar mediante inyecciones de hormona del crecimiento. Los medicamentos de reemplazo de la hormona tiroidea se utilizan para compensar la hipoactividad de la glándula tiroides del niño.

The correct answer is "carrier proteins." Facilitated diffusion is a passive transport process that allows the movement of specific molecules across a cell membrane, from an area of higher concentration to an area of lower concentration, with the help of carrier proteins.

These carrier proteins act as transporters, facilitating the movement of certain molecules that cannot easily pass through the lipid bilayer of the cell membrane.

Carrier proteins undergo conformational changes to bind with the specific molecule being transported and then release it on the other side of the membrane. These proteins are selective and can transport specific molecules or groups of molecules, such as ions, sugars, or amino acids.

Lipid carriers and carbohydrate carriers are not terms commonly associated with facilitated diffusion. Lipid carriers typically refer to lipoproteins that transport lipids in the bloodstream. Carbohydrate carriers are not a recognized term in the context of facilitated diffusion.

Therefore, facilitated diffusion relies on carrier proteins to enable the transport of specific molecules across the cell membrane. These proteins play a crucial role in facilitating the movement of substances that would otherwise face difficulty crossing the membrane through simple diffusion.

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Facilitated diffusion is a process wherein substances move down their concentration gradient aided by carrier proteins in the cell membrane.

Facilitated diffusion is a process in which substances move down their concentration gradient with the help of carrier proteins embedded in the cell membrane.

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Answer:

genotype

Explanation:

Woese's analysis of a tree of life did not include prokarya among the categories it described.

the process of closely scrutinizing something in order to learn more about it or form an opinion and judgment after doing so: An unbiased assessment of the results of the investment plan was done by our financial specialists. Clare's interpretation of the issue piqued my interest.

Your chance to contextualize or explain the evidence for your reader is during analysis. You may explain to a readers the importance of the evidence, what it means, and how it connects to other concepts in your work in your analysis.

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Answer:

fish and tetrapods are both vertebrates that have a backbone with a spinal cord. fish lived before tetrapods because their fossils are in rocks over 500 million years old.

Explanation:

fish and tetrapods are both vertebrates that have a backbone with a spinal cord

Explanation:

Convection drives the circulation of air in the earth's atmosphere. The sun heats the air near the earth's equator, which becomes less dense and rises upward. As it rises, it cools and becomes less dense than the air around it, spreading out and descending toward the equator again.

Color pencils are similar to graphite pencils, but instead of lead made from graphite, the core of color pencils is made from pigment and a binder.

The pigment provides the color, while the binder holds the pigment particles together and allows them to adhere to the paper when drawn with the pencil.

The pigment used in color pencils can be derived from various sources, including synthetic materials or natural substances such as minerals or plant extracts. Common pigments used in color pencils include different shades of red, blue, green, yellow, brown, and other colors.

The binder in color pencils is usually a combination of waxes or oils, such as beeswax or vegetable oil. The binder gives the color pencil its smooth texture and helps the pigment adhere to the paper when applied. It also contributes to the ability to blend and layer colors when using color pencils.

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Answer:

diamond and corundum

Explanation:

diamond has a hardness of 10 and corundum has a hardness of 9, both are higher than 8

Answer: The first and the last are point source and the second and third are non-point source.

Explanation: I got these right on the quiz.

The first image and the last image are point source pollution while the second and third images represent non point source pollution.

A point source pollution refers to a pollution that is emerging from a particular point such as from a pipe. It is traceable to a given source. The non - point source pollution is not traceable to any particular source.

In the image as shown, the first image and the last image are point source pollution while the second and third images represent non point source pollution.

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Answer:

A - The fact that the bone structures are similar supports the concept that the animals shared a common ancestor.

Explanation:

Homologous structures refer organs which are similar in structure which are derived from ancestors of similar species.

Answer:

to keep you protect from dust or anything that can damage his eye

~Hello

Fossils are one of the best evidence of evolution, mainly because they are the remains of living organisms from the past, which allow us to compare them with living organisms. However, the fossil record is notoriously incomplete and it is also biased in favor of animals with hard body parts, such as skeletons and shells. Soft bodied organisms and soft body parts are rarely preserved and there are often huge gaps in some evolutionary sequences. For example, Archaeopteryx is the earliest known bird, but it is already a bird, nothwithstanding some of the features that are unquestionably reptilian. The earliest known reptile with feathers is Longisquama, but there is a gap of some 75 million years between Longisquama and Archaeopteryx, and nothing has yet been found that are intermediate between these two important fossils.

Finally, DNA is virtually unobtainable from fossils, making it nearly impossible to compare the DNA of most fossils with living organisms. In terms of phylogenetic tree construction, DNA data is far superior to fossil evidence. However, if not for the existence of fossils, DNA data alone would be unconvincing as evidence of evolutionary change.

~ Hope this could help

As fossils provide direct evidence of past life forms, allowing scientists to study the anatomy, behavior, and ecology of extinct organisms, and also allow scientists to track the evolution of life on Earth over long periods of time.

Fossils have several advantages as a source of information about past lives. One major advantage is that they provide direct physical evidence of the existence of extinct organisms and the conditions they lived in. This can help researchers understand the evolution of different species over time and how they adapted to changing environments. One limitation is that not all organisms leave fossils behind, so the fossil record is incomplete and biased towards certain types of organisms that were more likely to be preserved. This means that there may be large gaps in our understanding of the evolutionary history of certain groups of organisms.

Hence, fossils provide direct evidence of past life forms, allowing scientists to study the anatomy, behavior, and ecology of extinct organisms, and also allow scientists to track the evolution of life on Earth over long periods of time.

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Answer:

The forces of thrust, lift, drag, and gravity all work together to send your homemade aircraft flying. To understand how these forces work to create flight, think about movement: something has to push that plane forward.

A. CD1 and C. MHC II are found on the surface of an antigen-presenting cell (APC).

Antigen-presenting cells (APCs) play a crucial role in the immune response by capturing, processing, and presenting antigens to T cells. These cells express specific molecules on their surface that facilitate antigen presentation. Among these molecules, CD1 and major histocompatibility complex class II (MHC II) are prominently found on the surface of APCs.

CD1 molecules are a family of glycoproteins that are responsible for presenting lipid and glycolipid antigens to specific T cells, such as CD1-restricted T cells. They play a crucial role in immune surveillance against bacterial, fungal, and parasitic infections.

On the other hand, MHC II molecules are involved in presenting peptide antigens derived from extracellular pathogens to CD4+ T cells, also known as helper T cells. MHC II molecules are constitutively expressed on professional APCs like dendritic cells, macrophages, and B cells.

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Answer:

1 - b

2 - c or d

3 - d

4 - true

5 - c

Explanation:

A. True. During transcription of a specific gene, only one DNA strand serves as a template for the formation of RNA.

During transcription, only one of the two DNA strands, the template strand, is used as a template for RNA synthesis. The other strand, the non-template strand or sense strand, is not used for RNA synthesis but has the same sequence as the RNA transcript, except for thymine (T) which is replaced by uracil (U) in RNA. Transcription, the genetic information stored in DNA is transferred to RNA.

This process occurs in the nucleus of eukaryotic cells and involves several steps, including initiation, elongation, and termination. To initiate transcription, RNA polymerase, the enzyme responsible for synthesizing RNA, binds to a specific region of DNA called the promoter. Once bound, the enzyme unwinds the double-stranded DNA, separating the two strands and exposing the template strand.

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Chimpanzees, bonobos, and gorillas, like humans, have a part of the brain called the prefrontal cortex that is highly developed.

The prefrontal cortex is responsible for higher cognitive functions such as decision-making, problem-solving, self-control, and social behavior.This region plays a crucial role in complex thinking, planning, and the regulation of emotions.

The prefrontal cortex in these great apes is particularly well-developed, reflecting their advanced cognitive abilities. It enables them to exhibit sophisticated social behaviors, maintain complex social relationships, and engage in intricate problem-solving tasks.

This brain region allows them to navigate their social environments, exhibit empathy, and engage in cooperative behaviors.

The presence of a highly developed prefrontal cortex in chimpanzees, bonobos, and gorillas highlights their advanced cognitive capacities and their ability to adapt and thrive in their respective environments.

It emphasizes the evolutionary continuity and shared cognitive traits between humans and these great apes.

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Answer:

d.golgi apparatus

Answer:

True

Explanation:

have a great day

Explanation:

If someone has blood type A, they must have at least one copy of the A allele, but they could have two copies. Their genotype is either AA or AO. Similarly, someone who is blood type B could have a genotype of either BB or BO. A blood test of either type AB or type O is more informative.

Answer: Structures found in the cytoplasm, called ribosomes, perform the process of translation. Reading the mRNA's nucleotides three at a time, these structures assemble strands of amino acids, the molecules that make up proteins. Each nucleic acid triplet corresponds to a particular amino acid.

In a cell the ribosome can make protein by the process of translation process where it read the mRNA nucleotide sequence at a time which  assemble the strands of amino acids, the molecules that make up proteins. as each ribosome involve in synthesis of specific amino acids at a time, thus it can not make another protein

A ribosome is a complex molecular machine present inside the living cells that produce proteins by a process called protein synthesis or translation.

The most important ribosome function are It gather and assemble all amino acids to form proteins  which are essential to carry out cellular functions, The DNA synthesize mRNA by the process of DNA transcription.

The mRNA synthesis occur in the nucleus and transported to the cytoplasm for  protein synthesis, the subunit of ribosome present in the cytoplasm are bound around mRNA polymers and tRNA synthesizes proteins.

The proteins synthesized by attached ribosomes can be transported outside the cell.

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(repost)

Answer:

B.Energy cannot be destroyed.

Explanation:

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. So, the only possible choice is B.

Answer:

B

Explanation:

The amoeba is considered an outgroup because it is the taxon that diverges earliest from the common ancestor of all the listed organisms

In the given cladogram, the amoeba is considered an outgroup because it is the taxon that diverges earliest from the common ancestor of all the listed organisms. An outgroup is a taxonomic group that is used to establish the ancestral characteristics and evolutionary relationships within a cladistic analysis.

In this case, amoeba is a unicellular organism, whilke all the the other organisms listed are multicellular. The presence of a multicelluar body is a derived characteristics that evolved after the divergence of the amoeba lineage. By using the amoeba as an outgroup, we can determine shared derived characteristics among the multicellular organisms in the cladogram.

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Answer:

Arrow no. 4

Explanation:

Water flows from a region of higher concentration to a region of lower concentration, i.e, osmosis.

Dilute solution means it has relatively less solute and more solvent, meaning more amount of water.

And just the opposite for concentrated solution.

So since the dilute solution has more water and concentrated solution has less, and water moves from a region of higher concentration to a region of lower concentration, option 4 is the correct answer.

During the osmosis process solvent is moved from a lower solute concentration to a higher solute concentration, hence arrow 4 defines the movement of water molecules.

Osmosis is the process through which solvents move from a region of lower solute concentration to one of higher solute concentration across a semi-permeable membrane.

Water in the cell acts as a solvent and moves from lower solute concentration to higher solute concentration through a partially permeable membrane.

Conversely, in diffusion, molecules migrate from an area of greater concentration to regions of lower concentration without the need for a semi-permeable barrier.

Therefore diffusion of water molecules in the osmosis process from low solute concentration to high solute concentration, hence arrow 4 defines the movement of water molecules.

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The carrying value of the bond after the first interest payment using the effective-interest method of amortization will be $196,331.

Burrows, Inc. issued 200 bonds with a 5% coupon rate, a $1,000 face value, and a 3-year maturity. The bonds were sold for $194,652 when the market interest rate was 6%. The carrying value of the bond after the first interest payment using the effective-interest method of amortization can be calculated as follows:

First, we determine the interest payment: 5% x $1,000 = $50 per bond, and for 200 bonds, it's $50 x 200 = $10,000 total interest payment.

Next, we calculate the interest expense using the market interest rate of 6%: $194,652 x 6% = $11,679.

Now, we find the amortization of the bond discount: $11,679 (interest expense) - $10,000 (interest payment) = $1,679.

Finally, we adjust the carrying value after the first interest payment: $194,652 (initial carrying value) + $1,679 (amortization of bond discount) = $196,331.

Therefore, the carrying value of the bond after the first interest payment using the effective-interest method of amortization will be $196,331.

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Answer:

The options are

Complex

Identical

Inconsistent

Non-testable

The Answer is Identical

Explanation:

The groups of scientists in different parts of the world who are dating fossils found in a rock layer of the same geologic time period. The findings have to have some common characteristics which links it to being in the same geologic time period.

This however validates the fossils having to be identical to match those found in other parts of the world.

Answer:

identical

Explanation:

Answer:

Hydrogen

plz help me out and mark brainliest

Answer:

Well The answer you choose was wrong I think because every living being that has cells need a Nulceus in their cells or the cells won’t work. Fungi have cells and Protista also have a nucleus since it has a cell or cells.

The answer here I would think would be (c) ”many could be found in fresh water”. Fungi don’t usually appear near seas or fresh sources which in this case is a pond and protistia do.

Answer:

The sliding filament model describes the process used by muscles to contract. It is a cycle of repetitive events that causes actin and myosin myofilaments to slide over each other, contracting the sarcomere and generating tension in the muscle