According to the State University of New York, a fetal pig has a total of seven lung lobes. The right lung is larger and is divided into four lobes<span>: the apical, cardiac, diaphragmatic and intermediate. The left lung has </span>three lobes<span> because it does not have an intermediate lobe.</span>
Water helped to shape the new American colonies in the 18th-century by providing drinking water, fertile soil to grow crops and a way to transport goods.
<h3>What was the importance of water for American colonies?</h3>
New American colonies were benefited by the water bodies due they could use this water for drinking and transport.
Water was also a powerful source to create watermills, which helped with different tasks.
In conclusion, water helped to shape the new American colonies in the 18th-century by providing drinking water, fertile soil to grow crops and a way to transport goods.
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Answer:
Biopolymers are natural polymers produced by the cells of living organisms. Biopolymers consist of monomeric units that are covalently bonded to form larger molecules
Ans.
Chromatin molecules are made up of DNA and histone proteins. Modification of chromatin structure include covalent, post-translational changes in histone proteins, present in chromation. Acetylation and methylation are two important histone modifications that affect structure of chromatin molecules.
Acetylation involves addition of an acetyl group to histones that increases transcription of DNA by loosen the association between DNA and nucleosome.
Methylation involves addition of a methyl group to histones that results in condensation of chromatin molecule and thus, decreases transcription of DNA.
Both acetylation and methylation are reversible processes.
Many chromatin modifications are genetic, means they can pass from one generation to another generation, called epigenetic modifications.
Thus, options B), C), D), E), and F).
