Life is cellular 8.1
What is the plural word for nucleus?
Nuclei.
What is the definition of Endoplasmic Reticulum?
The internal membrane system of eukaryotic cells.
The movement of molecules across the cell membrane without using cellular energy is called?
Passive Transport
Define Homeostasis.
The ability of living organisms to maintain a stable relatively constant internal environment despite changes in the external environment.
What is cell theory?
-The concept that all living things are made up of cells
-Cells are the basic units of structure and function in living things
-New cells are produced from existing cells
What are the two major parts of a eukaryotic cell?
The cytoplasm and organelles.
How can a cell seperate itself from its environment and still allow materials to enter and leave?
A cell separates itself from its environment and controls the passage of substances tanks to the plasma membrane.
What is cellular communication?
Cells in large organisms communicate by means of chemical signals that are passed by one cell to another.
Describe the difference between Eukaryotes and Prokaryotes.
Eukaryotes enclose their DNA in nuclei, Prokaryotes do not.
Whats the difference in roles of vacuoles and lysosomes?
Vacuoles store water, salts, protein, and carbs, while lysosomes break down lipids, carbs, an proteins.
How does osmosis work?
In the cell, water passes by osmosis through aquamarines embedded in the cell membrane.
What is the difference between Plant and Animal cells?
The key differences between plant and animal cells lie in the presence of absence of a few major organelles, which dictate their shape, energy acquisition and storage capabillties.
What is the relevance of the year 1500 in discovery of cells?
The microscope was invented, leading to the discovery of cells and later cell theory.
It is in the cytoplasm.
What does the word pressure mean?
What are the differences between plant and animal cells?
The fundamental between unicellular and multicellular organisms lies in the number of cells. Unicellular are composed of a single cell and multicellular organisms consist of many cells.
Who were the three main contributes to cell theory?
Matthias Schleiden, Theodor Schwann, and Rudolf Virchow.
What are the 5 steps to making a protein?
1. Proteins are assembled on ribosomes
2. proteins targeted for export to cell membrane or to specialized locations within the cell and complete assembly on ribosomes.
3.newly assembled protein get carried from rough Reticulum to Golgi apparatus
4. the Golgi modifies proteins before sorting and packaging.
5. Then they get to the final destination.
What is the difference between and Endocytosis and Exocytosis?
Endo is the process of taking materials into the cell by means of infoldings or pockets were exo is the process of releasing large of amounts of materials.
What are 3 reasons that specialization and interdependence could be considered the keys to homeostasis in a multicellular organism.
1.) They work together
2.) Maintain optimal internal environment
3.) Rapid & targeted response to change