Structures that are common to all cell types:
* Plasma membrane
* Cytoplasm
* DNA
* Ribosomes
Functions:
* Plasma membrane provides protection to cell
* Cytoplasm holds components of cell and protects from damage
* DNA stores information for making proteins
* Ribosomes decode and form peptide bonds
Answer:
Hi, so the Great Plains are made of sedimentary rock and were subducted and melted to magma which cooled to igneous rock, was uplifted and then formed the Rocky Mountains.
Explanation:
Basically it melted then cooled into igneous rock then was lifted and formed the rocky mountains!
-Hailey :)
Answer:
The correct answer is "Histones in general have a net negative charge that allow them to bind to DNA. Acetylation of histones, decreases their positive charge and weakens the histone-DNA interaction".
Explanation:
Histone acetyltransferases (HATs) are regulators of gene activation and deactivation, achieved by the transference of an acetyl group from acetyl-CoA to histones. HATs function by the premise that histones in general have a net negative charge that allow them to bind to DNA. Acetylation of histones, decreases their positive charge and weakens the histone-DNA interaction. Therefore, most of the times histone acetylation increases gene expression, because the acetylated gene is free from the histones and is able to be encoded.
Correct answer: A). Plant cell vacuoles are usually larger than animal cell vacuoles because they store both food and enzymes.
Vacuoles are present in both animal cell and plant cells, but the vacuoles in plant cell are much larger in plant cells. Vacuoles act as storage bubbles that are used to store a large amount of water and nutrient that are required for the growth of a plant. It may also hold the waste product in the plants. These are then slowly broken down into small pieces in order to protect other plant cells from contamination.
