Activators and repressors are transcription-control elements that are found in eukaryotic organisms. These elements function during the process of transcription, where a DNA molecule is coded onto a RNA molecule for it to be sent to ribosomes outside of the nucleus and then polypeptide chains are produced from it.
The activators and repressors control which proteins are made, which means that they can either hinder or promote certain functions in the cells of the body. Therefore, even though all of the cells have the same set of DNA, some are able to produce HCl, while others produce other substances such as insulin.
I think it is D because your responding to the cold from stimuli and by creating heat to keep your body the average temperature it is homeostasis.
Answer:
Explanation:
Standing crop is the biomass or living matter of biotic components of an ecosystem at a particular time. It represents the entire living matter (biomass). ... Standing state can be defined as the amount of inorganic nutrients found in an ecosystem. It represents the part of non-living matter.
The most common way of fruits to be spread is by birds.
Some birds eat the fruit, and when they dispose of its excrements, the seeds into that get spread.
Another way is with fruit near a waterfront and when the fruit falls into water they move away.
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Answer: B) Centromere</h3>
I recommend looking at the wikipedia page for Chromatid. They show a diagram where the centromere is, which is basically where the chromosomes glue together more or less.