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malfutka [58]
3 years ago
5

Step 1- Investigative Question

Biology
1 answer:
larisa86 [58]3 years ago
7 0

Answer:

Eggshells are made of calcium carbonate. If you soak an egg in vinegar the eggshell will absorb the acid and break down, or dissolve. The calcium carbonate will become carbon dioxide gas, which will go into the air.

Explanation:

It will bounce.

I believe that it is testable because you can do it at home.

Independent variable is vinegar.

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Some molecules found in foods are known to be capable of driving DNA methylation or DNA demethylation. For example, folic acid (
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Answer: Eating excessive quantities of such molecules could deregulate this process, increasing methylation and repressing the expression of genes that should normally be expressed.

Explanation:

DNA methylation is one of the epigenetic mechanisms involved in the regulation of gene expression, because it is a process by which methyl groups are added to DNA.

Methylation then modifies the function of DNA when it is found in the promoter gene, it is essential for normal development and is associated with a number of key processes, including genomic imprinting, inactivation of the X chromosome, repression of repeating elements, aging, and carcinogenesis. Usually, <u>it acts to suppress gene transcription.</u>

For example, folic acid is essential for the rapid cell division that occurs during early fetal development and it also plays an important role in methylation and thus in gene regulation. <u>The metabolism of these vitamins is aimed at achieving adequate levels of  DNA methylation, necessary for the cellular processes</u>. Eating excessive quantities of such molecules could deregulate this process, <u>increasing methylation and repressing the expression of genes that should normally be expressed</u>.

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3 years ago
Moving substances from a lower concentration to a higher concentration requires
Alexandra [31]

Answer:

Active Transport

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3 years ago
How is the process of carbon fixation in CAM plants different from the process in C3 and C4 plants
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One has more atificial growth hormones
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CAM photosynthesis limits CO2 fixation to nighttime hours in order to (A) allow water to enter leaf spaces during the daylight h
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