rad protection flash cards about the human cell for quiz 1
What are the three main parts of the cell?
The cell membrane, the cytoplasm, and the nucleus
What does the cell membrane do?
Protects the cell; holds in water and nucleus; and allows water, nutrients and waste products to pass into and out of the cell (it is semipermeable)-selectively allows various things to pass into or out of cell
What is the cytoplasm primarily composed of?
What is the cytoplasm involved in?
Conducts all cellular metabolism; contains organelles; takes unrefined material and builds or assemble new substances. (Anabolism-assembly of larger molecules from smaller ones); produces energy by breaking down organic matter (Catabolism); packages matter for distribution to other areas; eliminates waste
What are the different organelles within the cytoplasm?
Centrosomes/centrioles; ribosomes; lysosomes; mitochondria; golgi apparatus; and endoplasmic reticulum
What is the function of centrosomes/centrioles?
participates in cell division
What is the function of ribosomes?
What is the function of lysosomes?
contains enzymes for intracellular digestive process
What is the function of the mitochondria?
What is the function of the golgi apparatus?
combines proteins with carbohydrates
What is the function of the Endoplasmic reticulum?
Acts as a transportation system to move food and molecules within the cell. Smooth and rough
What is anabolism?
Assembly of larger molecules from smaller ones. Makes big things out of little things. (building up)
What is catabolism?
process of breaking down matter
What does the nucleus contain?
Contains DNA and RNA.
What does DNA control?
It controls cell division and controls all cellular functions
What are the two types of RNA?
Messenger RNA (mRNA) and Transfer RNA (tRNA)
What is the function of messenger RNA (mRNA)?
It is able to leave the nucleus and directs cell activity
What is the function of transfer RNA (tRNA)?
It does the work as directed by mRNA to create proteins
What is DNA made of?
Adenine (A), Cystosine (C), Guanine (G), and Thymine (T)