quiz laboratorio #3 pt.1 Flashcards
objectives
- To learn about the Cell Theory
- To distinguish the difference between prokaryotic and eukaryotic cells
- To distinguish among eukaryotic cells, between plant and animal cells and to be able to identify the different structures of the cell and their function
- To understand how transport of substances across the cell, primarily through passive transport (diffusion and osmosis) by understanding these processes, tonicity and its importance for cell function
- To learn about and understand pH and buffers and their importance for cell function.
The basic unit of life is the
cell
We now know that all living organisms are composed of single cells (unicellular) or many cells (multicellular), that tissues are made up of cells, and that organs are made up of tissues, and organ systems of organs.
thee cell theory states that:
- All living organisms are composed of cells
- That cells come only from other preexisting cells
- That cells are the basic functional unit of all living organisms.
Cells need energy to survive, whether it is in the form or chemical or solar energy, it takes in substances or takes out substances by means of
passive or active transport
eukaryotic
Domain:
prokariotyc
Domain:
eukaryotic
(Domain Eukarya)
prokariotyc
(Domains Archaea or Bacteria)
a phospholipids bilayer that sourrounds the cell and creates a boundary between the interior of the cell and its external environment.
regulates the movement of molecules into and out of the cytoplasm.
The nuclear envelope (plasma membrane)
All cells also contain:
the hereditary material or DNA,
plasma membrane
cytoplasm
carries the information that directs the cell activity and reproduction
the hereditary material or DNA,
a semi fluid medium that contains water, salts, organic matter and other associated structures which fill the interior of the cell.
cytoplasm
All living cells are classified as
either prokaryotic or eukaryotic.
basic difference between prokaryotic and eukaryotic
prokaryotic don’t have nuclei, eukaryote do.
Prokaryotes don’t have
the organelles found in eukaryotic
Organelles are
small, membranous bodies, each with a specific structure and function.
IN PROKARYOTES
The cytoplasm contains __________, which are…
_____________ that participate in photosynthesis
and innumerable _______
Prokaryotes also have a ____________, which contains a
ribosomes, small granules that coordinate the synthesis of proteins
thylakoids (only in cyanobacteria)
enzymes
nucleoid, chromosome composed largely of DNA with little protein.
Eukaryotes have a membrane bound
The nucleus in a eukaryotic cell contains
The cytoplasm consists of a
Many organelles are membranous, such as the
nucleous, and organells.
nucleoplasm and the nucleolus
background fluid and the organelles.
nucleolus, endoplasmic reticulum, Golgi apparatus, vacuoles and vesicles, lysosomes, peroxisome, mitochondrion, and chloroplast.