Answer: An example of a specific case is when a skin lesion occurs. Through mitosis, new skin cells are generated to repair damaged tissue. These cells have to be genetically identical to each other. The spindle fibers are structures formed by microtubules extending from one pole to another to orient the duplicated chromosomes in the spindle, bringing them to the position they occupy during metaphase.
Explanation:
Mitosis is a process of cell division that occurs in eukaryotic cells, i.e. cells that have a nucleus where their genetic material is located. This process generates two identical cells with the same DNA, that is, with two identical nuclei, so it does not provide genetic variability except in case of specific mutations. The objective of mitosis is cell multiplication while preserving genetic information. But in general, in mitosis there is an equal distribution of the cell nucleus as well as the rest of the cell content.
The phases of mitosis are as follows:
Interface: The cell duplicates its organelles and its DNA to have twice everything before division.Prophase: The nuclear membrane breaks, the chromosomes condense, the centrosome duplicates and migrates to the opposite poles of the cell forming microtubules. Also, fibers of the mitotic spindle are formed. Prometaphase: The microtubules invade the space where the genetic material is.Metaphase: The replicated chromosomes line up in the middle of the cell, called the equatorial plane.Anaphase: Microtubules separate chromosomes towards the opposite poles. Telophase: The nuclear envelope is re-formed from the remaining fragments of the original.Cytokinesis: A cleavage groove is created in the common cytoplasm of the two new cells where the chromosomes were aligned. The cytoplasm is thus strangled until the membrane allows total separation.Mitosis is then a cellular process that occurs in multicellular organisms to repair damaged tissue, or for growth or development. An example of a specific case is when a skin lesion occurs. When a person suffers an injury, many reactions take place in the repair process to repair the damage including inflammatory, proliferative, and remodeling phases. Through mitosis, new skin cells are generated to repair damaged tissue. These cells have to be genetically identical to each other, to have the same genetic fingerprint and the same function.
The spindle fibers are structures formed by microtubules extending from one pole to another. The kinetochore microtubules attach to the kinetochore, a structure that forms at the centromere of each duplicated chromosome, and orient the duplicated chromosomes in the spindle, bringing them to the position they occupy during metaphase and attracting the newly separated chromosomes to the poles during anaphase.
Spindle fibers has a great contribution in the process of mitosis.
The spindle fibers help to ensure the products of mitosis which is two identical cells with a full set of chromosomes due to attracting the chromosomes towards the poles. Spindle fibers move chromosomes during cell division by attaching to chromosome arms and centromeres and drag the chromosomes towards the pole.
This movement of chromosomes leads to the formation of one parent cell into two daughter cells having equal and same set of chromosomes so we can conclude that spindle fibers has a great contribution in the process of mitosis.
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"CRISPR" stands for Clustered Regularly Interspaced Short Palindromic Repeats, which are the hallmark of a bacterial defense system that forms the basis for CRISPR-Cas9 genome editing technology. In the field of genome engineering, the term "CRISPR" or "CRISPR-Cas9" is often used loosely to refer to the various CRISPR-Cas9 and -CPF1, (and other) systems that can be programmed to target specific stretches of genetic code and to edit DNA at precise locations, as well as for other purposes, such as for new diagnostic tools. How can this tool be used to alter genes in various organisms?
Answer:
by designing short guide RNAs (sgRNAs) customized to target genes of interest in the cells of these species
Explanation:
The CRISPR-Cas9 editing system is a versatile and powerful genome engineering tool for editing genomes, which can be directed to alter almost any DNA sequence in order to modify gene function. This system consists of an endonuclease protein (Cas 9) that cuts DNA at specific sites guided by a short guide RNA (sgRNA), which binds by base complementarity to the target sequence. This sgRNA must be designed with efficiency and specificity to target genes of interest. In consequence, the CRISPR-Cas9 genome editing system produces DNA double-strand breaks which may be repaired by 1- error-prone nonhomologous end joining (NHEJ) or 2-homology-directed repair (HDR) DNA repair pathways. According to the DNA repair pathway that has been activated, it is possible to trigger genetic modifications in the cells of different species (i.e., plant cells, animal cells, human cells, etc).
How does the ozone layer benefit life on Earth
Explanation:
it shields humans and other living things from ultraviolet rays
Polymers make up Monomers
True or False
Answer: False
Explanation:
Hey there! It is the other way around. Monomers make up Polymers. Monomers are referred as the building blocks of Polymers.
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HELP ME PLSSS someone
what is a telescope in your own word plx thx
Answer:
A telescope is a device that you can use to take a closer look at things very far away. Most people use them to look at the stars or planets.
Hope This Helps!
A ``telescope`` is a device that is used to see things from afar, like planets, or starts in the sky.
------------------------------------------------------------------------Hope this helps!
Carbon dioxide may be cycled back and forth between plants and animals.
True
False
Answer:
it is true!!
Explanation:
Explain how ATP stores and releases energy
Answer:
The ATP molecule can store energy in the form of a high energy phosphate bond joining the terminal phosphate group to the rest of the molecule. In this form, energy can be stored at one location, then moved from one part of the cell to another, where it can be released to drive other biochemical reactions.
In a process called cellular respiration, chemical energy in food is converted into chemical energy that the cell can use, and stores it in molecules of ATP. ... When the cell needs energy to do work, ATP loses its 3rd phosphate group, releasing energy stored in the bond that the cell can use to do work.
which of the following kinds of organisms have prokaryotic cells?
a. fungi
b. plant
c. bacteria
d. animal
Answer:
C
Explanation:
Answer:
it would be bacteria.
Explanation:
I need help asap... dont guess
Answer:
vfsewvfdcsewfcd
Explanation:
Identify: What are the reactants of aerobic cellular respiration? What are products?
Answer:
Aerobic breathing disrupts glucose and combines disintegrated products with oxygen that generates water and carbon dioxide. The carbon dioxide is a waste of aerobic breathing because there is no demand for cells.
Cellular respiration reactants:
Glucose and oxygen.
Cellular Respiratory Products:
CO2 and water (H2O); ATP & Heat
Anaerobic breathing: breathing occurring in the absence of oxygen that makes certain ATP still alive to cells.
Explanation:
Cellular Respiration is the mechanism that releases energy in the presence of oxygen by breaking down food molecules.
Cellular breathing = Aerobic breathing
In mitochondria, aerobic breathing takes place.
Some of the energy generated by food decomposition is stored as ATP and some as heat.
ATP is an energy storage molecule used by every cell as its source of energy.
through which of these medias do sound travel most slowly a.water b.wood c.iron d.air
whos the best
GX
QLS
PSG
ur opinion
Answer:
I have no clues what those are but Ima go with GX
Explanation:
Answer:
QLS in my opinion QLS is the best
what organelles are used in passive and active transport
Molecules can diffuse across membranes via transport proteins, or they can be aided in active transport by other proteins. Organelles such as the endoplasmic reticulum, Golgi apparatus, mitochondria and peroxisomes all play a role in membrane transport.
Please help. Quick. Will give Brainliest!!
Answer:
Explanation:
plantlike protist
URGENT HELP PLZ ASAP!!!!! HELP!!!!!
Answer:
Poorly; his digestive system is not breaking down starch molecules into glucose.
Explanation:
His starch molecules are high while his glucose is low which means that his starch molecules are not breaking down into glucose.
Which of the following does not add CO2 to the atmosphere?
A. Cooking with gas B. Planting trees C. Burning wood D. Riding in a bus
Explanation:
carbon dioxide is added are the atmosphere naturally with organisms respire or decompose carbonate rocks are weathered,forests fires occur,and volcanoes eript.Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossils fuels and forests and the production of cement.
let me know if u got it right
From the options the action that does not add CO₂ to the atmosphere is : ( B ) Planting trees
When Trees are planted more oxygen is added to the atmosphere, during photosynthesis because plants releases Oxygen into the atmosphere during photosynthesis.
Cooking with gas releases CO₂ into the atmosphere while burning up the gas to generate heat. For a material to burn in nature it utilizes oxygen from the atmosphere while adding Carbon into the atmosphere.
Hence we can conclude that the action that will not add CO₂ into the atmosphere is Planting trees.
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Mightn't I have some help?
Answer:
The carbon dioxide level is increasing because the trees in those forests used to take the carbon dioxide for photosynthesis.
Explanation:
BRAINLIEST:
Will a hurricane gain strength or lose strength if winds become strong? Explain ur answer
Answer:
it will gain stanght because it is part wind
Answer:
"...Hurricanes experience more friction over land than over the ocean water. This also slows down hurricanes. Hurricanes do not only dissipate over land. Cool waters and strong winds may also decrease the strength of a hurricane."- Enotes
:D
While building a home, a family had to choose between granite and marble stairs. Which one would be more resistant to physical wear of foot traffic? EXPLAIN why this rock is more resistant. *
Answer:
Granite is harder than marble, so it is more resistant to chips and scratches.
Explanation:
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Identify the tonicity of the solution surrounding the cell.
Answer:
Hypertonic
Explanation:
Hypertonic solutions have less water ( and more solute such as salt or sugar ) than a cell. Seawater is hypertonic. If you place an animal or a plant cell in a hypertonic solution, the cell shrinks, because it loses water ( water moves from a higher concentration inside the cell to a lower concentration outside ).
How many neutrons does this atom have?
4
6
10
14
Answer:
I believe there are 6
Explanation:
Protons are the positively charged circles (blue)
Neutrons are the Neutral (red)
and the others (green) are called electrons
Which of the following is NOT true of plants?
A
Plants help remove some toxins from the air.
B
Some plants pollinate with help from the wind.
С
Plants remove carbon dioxide and release oxygen into the air.
D
Plants remove oxygen and release carbon dioxide into the air.
Answer:
D
Explanation:
Answer:
D
Explanation:
Infer how and why humans have changed species through breeding.
Answer:
Artificial selection is the process by which humans choose individual organisms with certain phenotypic trait values for breeding. If there is additive genetic variance for the selected trait, it will respond to the selection, that is, the trait will evolve. All of our domesticated species, including crop plants, livestock, and pets, are the products of artificial selection for desirable traits, such as seeds and fruits that do not disperse readily, increased meat and milk production, and docile behavior.
Which statements about plant and animal cells is true?
Group of answer choices
Plant cells have a cell wall and chloroplasts; animal cells do not have either.
Plant cells have a nucleus and a cell wall; animal cells do not have either of these.
Plant cells have a chloroplasts and mitochondria; animal cells have chloroplasts but do not have mitochondria.
Plant cells have a cell wall and a cell membrane; animal cells have a cell wall but do not have a cell membrane.
Plants have a cell wall and chloroplasts; animal cells do not have either
Hope this helps : )
Is Vaseline organic or inorganic explain why?
Answer:
Petroleum jelly, or petrolatum, is a mixture of hydrocarbons obtained from petroleum. Yes, the same petroleum we use in our cars and lawn mowers. If it seems like a bad idea to rub a byproduct of crude oil onto your skin.
Explanation:
Please help!
Question is in photo
Answer:
okay I am pretty sure it is 1/16 I may be wrong but I hope not good luck! sorry if I am.
Explanation:
After watching the video describe a situation where an object would have potential energy transformed into knetic energy
Answer:
p
Explanation:
Question 19 (1 point)
Which of the following is an example that includes evidence of a chemical reaction?
Answer:
sugar that is burned off gives an odor and turns brown and then black is a chemical change
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List 6 amino acids found in turkey meat. Explain how those amino acids could be formed into a protein including an explanation of translation and transcription.
A hiker has become overwhelmed with heat while walking in the Grand Canyon. The hiker's body goes into overdrive to keep cool in the heat. The hiker needs to hydrate his or her cells. What process is used to regulate homeostasis?
A. Balanced equilibrium
B. Passive transport
C. Cellular transport
D. Hydration