Answer:
Cellular membranes or plasma membranes has many functions. Some of these include regulation of cellular transport, and responding to cellular signals or hormones.
<h2>Cellular Transport</h2>
The plasma membrane is made up of the <u>phospholipid bilayer with embedded transmembrane proteins</u>. This makes the cell membrane <u>semi-permeable</u>. Movements of substances depend on the composition of the molecules e.g. glucose and amino acids, as needed by the pancreatic cells. These are larger and uncharged molecules and can't pass freely through the membrane so they utilize the transmembrane proteins via attaching to carrier proteins. This is called <em>passive transport</em>. On the other hand, in <em>active transport</em>, <u>ATP is used</u> to transfer molecules, like Hydrogen, from a low to high electrochemical gradient.
Other kinds of cellular transport are:
- Osmosis and diffusion
- Endocytosis
- Exocytosis
<h2>Cellular Signalling</h2>
The cell membrane is able to signal other neighboring cells by utilizing complex proteins. These proteins may take form as receptors or markers.
<h3>Membrane Receptors</h3>
They act as receivers of extracellular signals and spark intracellular processes. These receive signals from hormones, growth factors, etc.
<h3>
Membrane Markers </h3>
These allow the cells to identify each other and respond if this cell is needs further development as in organ development, or a foreign body to the system.
So what's your question?
HippieA Hippie is a person who was raised under the ideological system that came out of the tumultuous 1960's in North America and western Europe. They are either of the flower-child/baby boomer generation or that generations' subsequent offspring. They possess a core belief set revolving around the values of peace and love as being essential in an increasingly globalized society, and they are oftentimes associated with non-violent anti-governmental groups. There is a stigma of drug abuse attached to the hippies that is prevalent to this day, specifically the use and abuse of marijuana and hallucinagens. Many rock movements,poets, artists, and writers from the 1960's to today have associated with this movement, most prominently The Grateful Dead, Bob Dylan, Janis Joplin, and Phish. There are others too numerous to name. The movement, then and now, is considered a sub-culture by sociologists that associates itself with the left in all its political opinions. The conservative right often berates and abuses the opinions of people who associate themselves with the hippie movement and/or lifestyle, as the consider it dangerous and degenerative to a society to favor liberalism to such an extent."When we heard about the hippies, the barely more than boys and girls who decided to try something different... we laughed at them. We condemned them, our children, for seeking a different future. We hated them for their flowers, for their love, and for their unmistakable rejection of every hideous, mistaken compromise that we had made throughout our hollow, money-bitten, frightened, adult lives."
Author: June Jordan
"How many times must the cannonballs fly, before they're forever banned? ...How many deaths will it takes till he knows that too many people have died?"
Bob Dylan- Blowin in the wind.
Answer:
Answer is C
Explanation:
the first kingdom is Plantae since they have chloroplasts. The second kingdom would be Fungi since they have walls but no chloroplasts. and the third is Animalia because they have none of the above.
Answer:
Eukaryotic
Explanation:
Eukaryotic cell no tienen núcleo. El función principal es llevar DNA.