As the cell contains activated genes for the production of mitochondria, chloroplasts and a cell wall and inactive genes for root hair production, then it is a leaf cell.
- Leaf cells are different from other parts of the plant as they carry out photosynthesis for the preparation of food for plants.
- The chloroplasts present in leaves contain chlorophyll that helps in photosynthesis in the presence of sunlight using water and carbon dioxide. In this process, oxygen is released.
- Leaf cells contain many active and inactive genes.
- Leaf cells contain active genes for the formation of mitochondria, chloroplasts and a cell wall.
- Root cells contain the active genes for the formation of root hairs. But, chloroplasts are absent in root hairs as they do not have any role in photosynthesis. Roots are present inside the soil.
Thus, the leaf cell is the correct option as plant cells contain a cell wall and the leaf helps in the photosynthesis process.
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Based on the ecosystems located near the Sonoran and Chihuahuan Deserts, an ecosystem which the thornscrub belongs to is: B. shrubland.
<h3>What is thornscrub?</h3>
Thornscrub can be defined as a transitional biome that exist between a tropical and desert forest. This ultimately implies that, thornscrub comprises grasses, geophytes, and herbs,
In this context, we can infer and logically deduce that an ecosystem which the thornscrub belongs to is shrubland because it's typically made up of a plant community.
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If you were able to look very closely at a portion of dna and find methylated histones, you would be looking at a region of inactive chromatin.
- Histone methylation is the process by which methyl groups are added to the histone protein amino acids, which create the nucleosomes around which the DNA double helix coils to form chromosomes.
- Histone methylation is the addition of one, two, or three methyl groups to certain amino acids within a histone protein. Histones are coiled around DNA in the cell nucleus.
- These findings collectively imply that DNA methylation can be either active—as a probable contributor to levels of gene expression variation—or passive—as a result of or a separate indicator of gene expression levels.
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Answer:
C
Explanation:
These type of questions leave a great deal to be desired. There is no mention of which way Hubble used and manipulated data. He studied the variations in light to determine his conclusions.
Nor is there any mention of what Lomonosov did to come to the conclusion that conservation of mass is a constant.
We don't know what was done to get the results. Hubble was studying the universe; the conclusions made by Lomonosov depended on lab equipment that was very delicate (I'm assuming). I doubt he manipulated variables. He measured what he got.
I think the answer is C, but the question has so many assumptions that it is hard to know what answer to pick.
Answer:
The power is too centralized within a small group and gives them too much power. Leading to tyranny.
Explanation:
In an oligarchy, the power is divided between a small group of higher-ups and it can easily transform into a tyranny when one person becomes too influential.
