Answer:
Diffusion, osmosis and active transport are three similar chemical methods by which single molecules or very small structures are moved across membranes or relatively short distances, often within or between cells.
Explanation:
The movement of substances in and out of cells is a very important part of biology as without it no cell and so no organism could live very long. Substances can only cross the protective cell membrane by diffusion, osmosis or active transport. Mass flow only works at the organ, tissue and whole organism level.
This information is Quantitative data
Answer:
D.
Explanation:
if you look at the names of the species, the first part is the same, which means they aare closely related to some point. When you look at the picture, you also notice the species look strikingly alike.
The answer is protoplasm. it contains all the other answers anyways.
Answer:
Repression of gene expression
Explanation:
Heterochromatin is formed by highly-packed DNA regions. A functional consequence of heterochromatin formation is that these regions become inaccessible to transcription factors, thereby inhibiting gene transcription (genes in these regions are 'switched off'). Heterochromatin is formed by epigenetic modifications added to histone tails that form nucleosomes, i.e., histones H2A, H2B, H3 and H4. The epigenetic marks include, among others, acetylation and methylation.
