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JENCKE: Structure and Function of Cells

Chapter 2
STUDY
PLAY
PROKARYOTES have a nucleus and membrane bound organelles. True or False?
False
EUKARYOTES have a nucleus and membrane bound organelles. True or False?
TRUE
Which is larger - Prokaryotes or Eukaryotes?
Eukaryotes
What are 2 examples of Prokaryotes Cells?
Bacteria and Cyanbacteria
What are 4 examples of Eukaryotes Cells?
Plants, Animals, Protists and Fungi
Prokaryotes have __________ and _________ DNA
Singular, Circular
Do Prokaryotes have a cell wall?
SURE DO!
What is the function of the Plasma Membrane?
Allows selective passage of substances in and out of the cell
STUDY THE FLUID MOSAIC MODEL!
STUDY THE FLUID MOSAIC MODEL!
What is a semmi/partially/differentially permeable membrane?
A boundary that allows only some materials to pass through it
Define Diffusion
Movement of a solute from an area of high concentration to an area of low concentration
Is Diffusion Passive or Active?
Passive
Define Facilitated Diffusion
Form of diffusion involving a specific carrier molecule for the substance that diffuses
Is Facilitated Diffusion Passive or Active?
Passive
Define Osmosis
Movement of water from an area of high free water concentration to an area of low free water concentration
Is Osmosis Passive or Active?
Passive
Define Active Transport
Movement of a solute from an area of low concentration to an area of high concentration
Is Active Transport Passive or Active?
Active
Define Bulk Transport
Active Transport of large molecules or molecules required in large amounts, via means of vescile formation
Is Bulk Transport Passive or Active?
Active
Does Passive Transport require energy?
NO
Does Active Transport require energy?
YES
What way (down or up) does the transport occur on the concentration gradient when talking about PASSIVE transport?
Down (from high to low solute concentration)
What way (down or up) does the transport occur on the concentration gradient when talking about ACTIVE transport?
Up (from low to high solute concentration)
STUDY AN ANIMAL CELL
STUDY AN ANIMAL CELL
STUDY A PLANT CELL
STUDY A PLANT CELL
What is the function of the Nucleus?
Contains genetic mmaterial which contains instructions for the cell
What is the function of the Mitochondria?
Produces the chemical energy ATP required by cells
What is the function of the Endoplasmic Reticulum?
Transports substances within the cell
What is the function of Ribosomes?
Synthesis proteins
What is the function of the Golgi Apparatus?
Packages up substancesthen exports them from the cell
What is the function of a Lysosome?
-Digestion of the cell
-Apoptosis
What is the function of Chloroplast?
Traps sunlight and produces glucose for photosynthesis
What is the function of the Cell Membrane?
Controls the movement of substances into and out of the cell
What is the function of the Cell Wall?
Gives plant cells their structure to maintain its shape
What is the function of the Vacuole?
Used for storing substances, maintaining water, sugar and pigments in plants
In which cell is the Vacuole the largest? Plant or Animal?
Plant
What is the function of the Cytoplasm?
Some chemical reactions take place and suspend organisms. Fluid with organelles.
What are the 2 Organelles that are not found in Animal Cells?
Chloroplast and Cell Wall
What is the relationship between cell tissues, organs and organ systems?
Groups of similar cells form tissues > Groups of tissues form organs > groups of organs form organ systems > organ systems make up the whole organism
What is meant by the surface area to volume ratio?
Relative amount of surface area avaliable per unit of volume
How do you calculate the SA:V?
Surface area divided by Volume = SA:V