The nucleus is what houses the cells genetic information. Hope this helps!
Answer:
"As a molecule moves through the plasma membrane it passes through <em>a hydrophilic layer of phospholipid heads then a hydrophobic layer of phospholipid tails and then another hydrophilic layer of phospholipid heads".</em>
Explanation:
Biological membranes are formed by two lipidic layers, proteins, and glucans.
Lipids characterize for being amphipathic molecules, which means that they have both a hydrophilic portion and a hydrophobic portion at the same time. These molecules have a lipidic head that corresponds to a negatively charged phosphate group, which is the polar and hydrophilic portion. They also have two lipidic tails that correspond to the hydrocarbon chains -the apolar and hydrophobic portion- of the fatty acids that esterify glycerol.
Membrane lipids are arranged with their hydrophilic polar heads facing the exterior and the interior of the cells, while their hydrophobic tails are against each other, constituting the internal part of the membrane.
Through this lipidic bilayer, some molecules can move from one side of the cell to the other, which happens because of concentration differences. When this occurs, molecules must pass through the hydrophilic layer of phospholipid heads then through the hydrophobic layer of phospholipid tails and then again through another hydrophilic layer of phospholipid heads.
DNA is the main type of genetic material found in a cell. In addition, it is found in the nucleus of the cell, so (D) is correct. DNA in the nucleus is used in replication (through mitosis and meiosis) via daughter cells to continue cell growth.
Active transport. Which the molecules are transported by a protein called carrier protein with the help of ATP.
Answer;
Kingdom, Division, Class, Order, Family, Genus and Species
Explanation;
-The plant kingdom is divided into three divisions namely Bryophyta, Pteridophyta and Spermatphyta.
-Division Bryophyta includes mosses and liverworts. Division Pteridophyta includes the ferns and horsetails. They show a greater variety and a greater ability than bryophyte.
-Division Spermatophyta comprises all the seed bearing plants. They are familiar green plants which produce seeds through flowers or cones. The division spermatophyte consists of two main subdivisions: Gymnospermatophyta and Angiospermatophyta, which are the divided into classes and so forth,.
