Can someone please help me!

Answer:

a) another living cell

Explanation:

"All living cells arise from pre-existing cells by division."

Answer:

a; another living cell

Explanation:

according to cell theory and a guy named Rudolf Virchow, "all cells must come from pre-existing cells."

that basically mean that the cell in the picture had to have come from a living cell, not energy from the sun, or a multicellular orgasm.

Answer:

5) Both

6) Both

7) Animal

8) Both

Answer:

In adult organisms the regenerative capacity of certain organs or tissues can be limited, resulting in an important clinical challenge for physicians and scientists [1-3].

Regeneration involves the capacity for renewal or recomposition of tissues, organs or even organisms, after considerable physical injury or damage, resulting from pathologies, tumors, congenital diseases or traumas, for example. As a consequence of tissue regeneration, both the composition and the tissue properties are restored, and the newly formed tissue is highly similar to the original tissue. The regenerative capacity is directly related to the presence of stem cells or progenitor cells, which are capable of proliferation and differentiation [4,5]. Tissues that maintain a high proliferative capacity, such as the hematopoietic system, have regenerative capacity even in adult organisms [6].

Cell proliferation occurs in repair processes in general, accompanied by intense production of extracellular matrix, with large amounts of collagen, resulting in the formation of fibrous tissue to occupy the injured area. Although there is lesion filling, both the composition and the tissue properties are different from the original tissue, and the tissue organization pattern is not restored, leading to an altered performance of its functions [2]. Skin healing processes with the presence of scars are examples of tissue repair [3].

Besides the natural processes of regeneration and repair, it is possible, through medical intervention, to fill lesions with natural or synthetic materials, aiming at the recovery of the compromised area, and conferring certain properties to the tissue, avoiding, for example, exacerbation of the initial lesion or the evolution of degenerative processes [1,7].

The three approaches can be used in tissue engineering, targeting regenerative medicine, as they allow the recovery of compromised areas in different degrees. However, the primary objective is regeneration, recomposition of the original tissue and resumption of the biomechanical and molecular properties, with the normal performance of their functions [1,7-8].

Tissue regeneration involves cell recruitment, growth, proliferation and differentiation, with the latter representing a crucial stage for the success of regeneration, avoiding the formation of fibrous tissue characteristic of the repair [9-12]. Tissues with greater regenerative capacity, such as the skin and liver, intrinsically present cells able to migrate to occupy the affected region, and the same cells maintain the proliferative capacity, enabling occupation of the lesion [3]. In other tissues the regenerative capacity is even more impaired. In the cartilage, for example, the cells remain embedded in the extracellular matrix, and the absence of blood vessels inhibits the presence of other types of component cell in the tissue; even the cell migration and proliferation processes are compromised. In general, regeneration and repair processes do not occur naturally in these cases, requiring surgical intervention to stimulate the subchondral bone marrow, thus enabling the presence of cells capable of tissue repair in the compromised area [13]. Other scientific techniques and methodologies seek alternatives to enable the processes both of repair and of tissue regeneration [9-12,14-16].

Anyhow the final stage of the abovementioned processes, cell differentiation, is critical. An understanding of the mechanisms that lead to the differentiation process in adult organisms allows the proposition of improvements in existing technologies and of alternatives geared towards the optimization of guided tissue regeneration processes, in regenerative medicine.

Answer:

Your choices are all correct!

Answer:

Your are right the correct anwsers are

Explanation:

hope this helps you :)

Answer:

W w X w w

Explanation:

the square would fill with

Ww. ww

Ww. ww

Answer:

Extinction occurs when species are diminished because of environmental forces (habitat fragmentation, global change, natural disaster, overexploitation of species for human use) or because of evolutionary changes in their members (genetic inbreeding, poor reproduction, decline in population numbers).

The extinction of a species is most likely to occur when environmental conditions change and the members of the species lack adaptive traits to survive and reproduce.

Species may be defined as a group of organisms that can reproduce naturally with one another and create fertile offspring.

If the members of species do not have adaptive traits to survive and reproduce, they will definitely become extinct in near future.

This is because the relative fitness is directly related to the appearance or existence of particular species in the habitat.

Therefore, the extinction of a species is most likely to occur when environmental conditions change and the members of the species lack adaptive traits to survive and reproduce.

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Answer:

similar anatomies and embryo

Explanation:

evidence of evolution include

fossil records

comparative anatomy

Answer: adaptation would help a sped iss survive

Explanation:

Answer:

Trees give off oxygen that we need to breathe. Trees reduce the amount of stormwater runoff, which reduces erosion and pollution in our waterways and may reduce the effects of flooding.

Explanation:

Hope that helps

Answer: They help produce oxygen to reduce pollution

                They help against climate change

Explanation: U got this purrrr

Answer:

I don't know I'm sorry I will tell you another answer asks me to

Answer:

meisios is the correct answer

Answer: cell wall and lysosomes

Explanation:

Answer:

C

Combine B (above) and b (left) so Bb

.[tex] \huge \bigstar \mathfrak{ \fcolorbox{lime}{black}{ \red{ Asexual }}} \bigstar[/tex]

. Asexual

Answer:

The orange is analogous to the Earth in having a relatively dense centre (mantle/core) and a much less dense skin (crust).

Answer:

A good anology is an oarnge because it has a thin/semi hard "crust" while the inside is much softer and bigger

Answer:

Genes

Explanation:

Answer: The correct answer is B

Answer:

B is the answer beacuse yeah sorry if wrong

Answer:

Properties of Life. All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing.

Explanation:

Answer:

it gives a greater variety of crops

Answer:

cell membrane, nucleus, nucleolus, nuclear membrane, cytoplasm, endoplasmic reticulum, Golgi apparatus, ribosomes, mitochondria, centrioles, cytoskeleton, vacuoles, and vesicles.

Explanation:

sorry but these are only 13

Answer:

think of it this way lol

Explanation:

In asexual reproduction, you are essentially producing clones of the parent.  There is no genetic variation between parent and offspring - think of mitosis.

In sexual reproduction, you have several chances for genetic variation.  The first occurs in meiosis 1, when homologous pairs line up and crossing over occurs.  Then in meiosis 2, different combinations of chromosomes (some from mother, some from father) could end up in the gamete cells.  Finally, when the gametes (egg and sperm/spore) come together in fertilization, that represents a brand new combination of chromosomes, and therefore alleles, than either of the parents had.

They are divided into two separate kingdoms based on analysis of their

r RNA sequence.

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Answer:B

Explanation:

Yes - convection explains why the colder and denser waters sink and why the warmer, less dense waters rise.

Answer:

Yes - convection explains why the colder and denser waters sink and why the warmer, less dense waters rise.

Explanation:

took the thingy

Answer:

c. mutations caused by environmental agents, such as tobacco smoke, occur in somatic cells

Explanation:

just because you're parents smoked and got lung cancer doesn't mean you'll get lung cancer. (unless you're breathing the smoke, but that's different from inheriting it.)

Answer:

Bb= HE

bb-HOC

Ss=HE

SS=HOD

ss=HOC

Tt=HE

tt=HOC

TT=HOD

Explanation: