Unit 2: Cell Structure and function Flashcards
(25 cards)
What all life form have?
They all have ribosomes since they synthesized proteins
Where does cellular respiration occur?
In the mitochondria
What are the two organelles that chloroplast have?and why are they important
Thylakoids and stroma. These organelles are responsible for converting light into usable energy for the organism
Why does Surface-area-to-volume is especially important to cell size?
For its survival.The SA should be big enough to be able to exchange materials and eliminate waste products
What is the ideal size for cells?
High SA, smaller volume.
What are phospholipids belayers?
they are semipermeable Membranes
what is require for nutrients that are unable to pass on its own?
They require channels proteins, which can facilitate either passive or active factor
Passive transport
the movement of chemicals across a membrane from an area of high concentration to an area of low concentration without the need for cellular energy
Active transport
Active transport is the movement of molecules or ions across a cell membrane from a region of lower concentration to a region of higher concentration-ox
What is cell wall?
Organism like plants, Prokaryotic, fungi
Prokaryotic cell
- make up domain Eubacteria and Archaea
-older in an evolutionary sense
Smalle than eukaryotic cells - Most have cell walls
No nucleus
No membrane bound
Eukaryotic cells
Plants, animals, fungi and all protist
Larger than prokaryotic cells
Have a nucleus
Has a membrane bound
Linear DNA
Can be unicellular or multicellular
Cell(plasma) membrane
Outer boundary of the cell
Nucleus
Contains and protects the genetic material
Nucleoplasm
Any part inside the nucleus
Cytoplasm
refers to any part of the cell outside the nucleus; where all of the organelles can be found
Cytosine
Fluid component of the cytoplasm
Cytoskeleton
Internal supporting framework
The job of cells isl
-Make proteins
-Make energy
-Make more cells
Cell theory
All living things are made up of one or more cells
Cell are the basic unit of life
All cells com from existing cells
Organelles
Small structure inside a cell that have specific functions
Nucleus
Protects DNA
Structure; nuclear envelope
Double membrane
Cell membrane
In all cells
Function; maintains homeostasis by controlling what enters and leaves the cell
Cytoplasm
Gel like substance inside the cell
Found in all cells
Function it suspends the organelles and provides an environment for chemical reactions within the cell
