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Korolek [52]
2 years ago
6

How might cancer stem cells originate ?

Biology
1 answer:
OLga [1]2 years ago
8 0
This figure illustrates 3 hypotheses of how a cancer stem cell may arise: (1) A stem cell undergoes a mutation, (2) A progenitor cell undergoes two or more mutations, or (3) A fully differentiated cell undergoes several mutations that drive it back to a stem-like state.
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When plants perform photosynthesis, they use sunlight to produce food. this is an example of light energy being converted to -?
aalyn [17]
This is turned into chemical energy
8 0
3 years ago
Drag labels at left into the appropriate targets on the right to complete this concept map about oxidative phosphorylation
almond37 [142]

*The key function of each of the two photosystems is to absorb light and convert the energy of the absorbed light into redox energy, which drives electron transport.

In PS II (the first photosystem in the sequence), P680 is oxidized (which in turn oxidizes water), and the PS II primary electron acceptor is reduced (which in turn reduces the electron transport chain between the photosystems).

In PS I, the PS I primary electron acceptor is reduced (which in turn reduces other compounds that ultimately reduce NADP+ to NADPH), and P700 is oxidized (which in turn oxidizes the electron transport chain between the photosystems).

8 0
2 years ago
Where near your home do you think the highest level of photosynthesis is happening?
sveticcg [70]

Answer:

I live in a rural area which is surrounded by mountains and valleys. Near my home there is small forest area where there are hundreds of thick tall forests, algae and many other photosynthetic plants.

The atmosphere of that forest is very clean and refreshing because there is alot of oxygen being produced there due to alot of photosynthesis being done by all the lush green plants there.

Due to photosynthesis, carbon di oxide that is an environmental pollutant is maximum used by the plants and maximum. Oxygen is produced as a result of photosynthesis.

This causes the environment of not only that forest but my whole village very clean and fresh to breath. We are living a healthy life where there is a less prevalence of diseases or infections that are caused by environmental pollutants like Bronchitis, Lungs infection, neural disorders etc.

Therefore, even if there is not such an area near your home, we would suggest you to plant more trees in your backyard that will make the environment of not only your home but your area very fresh and clean.


Hope it help!

5 0
3 years ago
Read 2 more answers
Please please help me!
Varvara68 [4.7K]

Answer: Heterotroph

Explanation: Good luck! :D

7 0
2 years ago
Identify the substance.
MakcuM [25]
Your answer is B.lipid
8 0
3 years ago
Read 2 more answers
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