JENCKE: Structure and Function of Cells

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Chapter 2

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

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