An example of gene regulation is: ORNA molecules are localized in the nucleus to speed up translation.
A methyl group is added to a histone to make it easier for a gene to be transcribed.
A repressor protein can bind to a DNA sequence that blocks the promoter and prevents transcription.
Enzymes are degraded into smaller pieces to speed up their activity rate.

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?