Answer:
they specialize in hunting and eating live primary consumers
because in a food web predator eat the prey and the prey eat the predator
Answer:
Some forms of chromatin modification can be passed on to future generation of cells
Acetylation of histone tails in chromatin allows access to DNA for transcription
DNA is not transcribed when packaged tightly in a condensed form
methylation of histone tails can promote condensation of the chromatin
Explanation:
chromatin modifications that can be passed on includes epigenetic modifications that are heritable changes made to the chromatin structure that does not involve the DNA sequences. Some epigenetic modifications include DNA methylation and Histone modifications. examples of histone modification include acetylation, methylation, phosphorylation, ubiquintylation etc. All these function either in allowing the DNA become more accessible to transcritional factors or vice versa. for exmple, histone tail acetylation encourages unwounding of nucleosomes allowing transcriptional factors to have access to the DNa while histone tails methylation further tightens the nucleosomes promoting condensation of the chromatin.
Answer:
Essentially there is not an answer. There are two different definitions.
A holoenzyme is an enzyme that needs to be together with a cofactor(s), required for activity.
In some cases, enzymes constituted by several subunits (like DNA polymerase 3) are call holoenzyme as well, because it will only perform correctly when all its subunits are present.
The Simple cuboidal epithelium<span> forms thyroid gland and secretes hormones is shown in the picture attached.
</span><span>Its main functions are secretion and absorption. It has an abundance of organelles to facilitate active transport frequently found in glands, such as salivary glands, the thyroid gland, and the pancreas, where its function is secretion.
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The epithelial<span> cells tend to be </span>cubical<span> in </span>form after they are inactive, however additional <span>columnar </span>after they are<span> actively secreting hormones.
The </span>epithelial<span> cells accumulate iodine from the blood and use this </span>component within the<span> synthesis of thyrog</span>lobulin<span>, </span>an oversized compound protein that<span> forms the </span>mixture<span>.</span>