BIOLOGY
11-30-15
1ST ENTRY TASK FOR CHAPTER 7 – THE CELL
LEARNING OBJECTIVE:
HOW HOMEOSTASIS MAINTAINS AN INTERNAL STABLE
ENVIRONMENT
ENTRY TASK:
GO TO PAGE 214 IN YOUR BOOK. READ ABOUT
HOMEOSTASIS, WHAT DO UNICELLULAR ORGANISMS DO
TO MAINTAIN HOMEOSTASIS?
TODAY’S PLAN
• CHECKING CHAPTER 2 TEST RESULTS
• STUDYING HOMEOSTASIS
• COMPARING PROKARYOTES AND EUKARYOTES
Homeostasis
(homeo_=same
_stasis=standing still)
Unicellular organisms as well as cells in
multicellular organisms must maintain
homeostasis, or that is to say, relatively
constant physical or chemical conditions.
To maintain homeostasis

Unicellular organisms
– Grow
– Respond to environment
– reproduce

Multicellular organisms
– Have specialized cells that communicate
with each other
Homeostasis



Maintaining a constant internal
environment
How does your body do this?
It uses a process called FEEDBACK
– 2 types of feedback are
1.
Negative – works to maintain a baseline level
ex. Your every day stuff like maintaining temperature
2.
Positive – works to push way passed a baseline
level
ex. Rarer events like child birth
Examples of Homeostasis in humans


Thermoregulation
Glucose regulation
https://www.youtube.com/watch?v=CLv3SkF_Eag
https://www.youtube.com/watch?v=QKT47A-LBj4
BIOLOGY
12-1-15
2ND ENTRY TASK FOR CHAPTER 7 – THE CELL
LEARNING OBJECTIVE:
MAIN ORGANELLES AND THEIR FUNCTION
COMPARE AND CONTRAST EUKARYOTIC AND
PROKARYOTIC CELLS
ENTRY TASK:
WHAT ARE ORGANELLES? DO YOU REMEMBER SOME OF
THE ORGANELLES FOUND IN CELLS? WRITE THEM DOWN
TODAY’S PLAN
• COMPARING PROKARYOTES AND EUKARYOTES
• PROKARYOTIC AND EUKARYOTIC CELLS POGIL
Compare and Contrast
On the white board, work with your group
to fill out this Venn diagram (page 194)
Prokaryotes
Eukaryotes
Compare and Contrast
Prokaryotes
No nucleus
Smaller
Cell membrane
Ribosomes
Cytoplasm
Eukaryotes
Nucleus
Endoplasmic reticulum
Golgi apparatus
Lysosomes
Vacuoles
Mitochondria
Cytoskeleton
Eukaryotic vs. prokaryotic
cells




Contains nucleus
Many organelles
present
10-100 micrometers
Appeared later in the
fossil record




Lacks a nucleus
Lacks organelles
1-10 micrometers
Appeared earlier in
the fossil record
Two Basic types
Cell membrane
cytoplasm
Prokaryote
Cell membrane
cytoplasm
nucleus
Eukaryote
Cell organelles
BIOLOGY
12-2-15
3RDENTRY TASK FOR CHAPTER 7 – THE CELL
LEARNING OBJECTIVE:
MAIN ORGANELLES AND THEIR FUNCTION
DIFFERENCE BETWEEN ANIMAL CELL AND PLANT
CELL
ENTRY TASK:
WHAT IS THE MAIN CHARACTERISTIC THAT DIFFERENTIATES A
PROKARYOTE CELL FROM A EUKARYOTE CELL?
WHAT IS THE ORGANELLE IN PLANT CELLS THAT ANIMAL
CELLS DO NOT HAVE?
TODAY’S PLAN
• FINISH PROKARYOTIC AND EUKARYOTIC CELLS POGIL
• MAIN CELL ORGANELLES AND THEIR FUNCTION
Main cell parts and
functions
Cytoplasm: holds organelles transport medium
Nucleus: Control center –
contains the DNA (genetic
material)
Ribosomes: make proteins
Ribosome
RER: modify and transport
proteins
SER: Production of lipids
(fats)

What is the difference between the
rough ER and the smooth ER?
Golgi apparatus: Process and
package proteins and lipids
Chloroplast: Where
photosynthesis occurs – Converts sun
energy into chemical energy (glucose)
Mitochondria: converts
chemic energy stored in foods into
compounds that the cell can use
Lysosome: Breaks down
organelles that are not longer
usefull
BIOLOGY
12-3-15
4TH ENTRY TASK FOR CHAPTER 7 – THE CELL
LEARNING OBJECTIVE:
HOW SUBSTANCES MOVE ACROSS THE CELL
MEMBRANE
ENTRY TASK:
THE CELL MEMBRANE IS REFERRED AS BEING
SELECTIVELY PERMEABLE, WHAT DO YOU THINK
THAT MEANS?
TODAY’S PLAN
• MAIN CELL ORGANELLES AND THEIR FUNCTION
• CELL MEMBRANE STRUCTURE AND FUNCTION
• DIFFUSION POGIL
Cell Membrane
 Composed
of proteins and a type
of lipid called phospholipid
 The structure that makes the
plasma membrane is called the
phospholipid bilayer
http://www.wisc-online.com/Objects/construction-of-the-cell-membrane/
Phospholipid molecule of Plasma
Membrane
Plasma Membrane Structure
BIOLOGY
12-4-15
5TH ENTRY TASK FOR CHAPTER 7 – THE CELL
LEARNING OBJECTIVE:
HOW SUBSTANCES MOVE ACROSS THE CELL
MEMBRANE
ENTRY TASK:
WHY IS THE CELL MEMBRANE IMPORTANT TO THE
CELL?
TODAY’S PLAN
• FINISH DIFFUSION POGIL, AND GO OVER QUESTIONS
• CELL QUIZ
• STUDY QUESTIONS
DIFFUSION
THE NET MOVEMENT OF PARTICLES OF
A SUBSTANCE FROM WHERE THEY ARE
MORE CONCENTRATED TO WHERE
THEY ARE LESS CONCENTRATED
DIFFUSION
• THE RANDOM MOVEMENT OF MOLECULES FROM A HIGH
CONCENTRATION TO A LOW CONCENTRATION
• IF SYSTEM IS LEFT ALONE THE MOLECULES WILL EVENTUALLY
SPREAD THEMSELVES EQUALLY EVERY WHERE – THE MOLECULES
DO NOT STOP MOVING THROUGH
What happens to a red blood cell when it is
placed in water with different concentrations of
solute?
Results of water movement
on cells – Osmotic Pressure
BIOLOGY
12-7-15
6TH ENTRY TASK FOR CHAPTER 7 – THE CELL
PLEASE GET A BOOK!
LEARNING OBJECTIVE:
HOW SUBSTANCES MOVE ACROSS THE CELL
MEMBRANE
ENTRY TASK:
EXPLAIN WHAT
IS HAPPENING
IN THIS
DIAGRAM
TODAY’S PLAN
• DIFFERENT TYPES OF TRANSPORT ACROSS THE CELL MEMBRANE
JIGSAW ACTIVITY
• CELL TRANSPORT QUIZ
TYPES OF TRANSPORT ACROSS THE CELL
MEMBRANE
• YOU WILL BE ASSIGNED AN SPECIFIC TYPE OF ACROSS THE CELL
MEMBRANE TRANSPORT
• STUDY YOUR ASSIGNED TRANSPORT FOR 7 MINUTES (PAGE 208213)
• YOU WILL MOVE TO AN EXPERT GROUP NEXT, WHERE YOU WILL
DISCUSS HOW TO PREPARE A PRESENTATION TO EXPLAIN YOUR
ASSIGNED TRANSPORT (FILLOUT THE CORRESPONDING
INFORMATION ON THE HANDOUT)
• YOU CAN SEARCH FOR ANIMATIONS ONLINE OR DRAW A
DIAGRAM ON THE WHITEBOARDS PROVIDED
• AFTER 15 MINUTES, YOU WILL MOVE BACK TO YOUR ORIGINAL
GROUPS WHERE ALL EXPERTS WILL PRESENT THEIR TRANSPORT
TYPE TO ENTIRE GROUP. AS YOU LISTEN TO THE PRESENTATIONS,
FILLOUT THE HANDOUT PROVIDED BY YOUR TEACHER
ON YOUR HANDOUT YOU WILL GET THE FOLLOWING INFORMATION
FOR EACH OF THE DIFFERENT CELL TRANSPORTS PRESENTED AND FOR
THE ONE YOU ARE AN EXPERT ON:
• A DIAGRAM THAT EXPLAINS THE TYPE OF TRANSPORT
• ANY SPECIAL CHARACTERISTICS OF YOUR TYPE OF
TRANSPORT -WHAT MAKES IT DIFFERENT FROM THE
OTHER TYPES
• THE OVERALL MOVEMENT OF PARTICLES THAT TAKES
PLACE
• WHETHER OR NOT ENERGY IS REQUIRED AND WHY
• PAGES 208-213
EXIT TICKET
• IN A HALF PIECE OF PAPER, WRITE YOUR NAME DATE AND PERIOD
AND ANSWER THE FOLLOWING QUESTION:
• WHAT IS THE DIFFERENCE BETWEEN PASSIVE AND ACTIVE
TRANSPORT? WRITE AN EXAMPLE OF EACH
BIOLOGY
12-8-15
7TH ENTRY TASK FOR CHAPTER 7 – THE CELL
PLEASE GET A BOOK!
LEARNING OBJECTIVE:
LEVELS OF ORGANIZATION IN BIOLOGY
ENTRY TASK:
EXPLAIN THE MAIN DIFFERENCE BETWEEN ACTIVE
AND PASSIVE TRANSPORT. IN TERMS OF PARTICLE
MOVEMENT AND ENERGY REQUIRED
HTTPS://WWW.YOUTUBE.COM/WATCH?V=KFY92HDAAH0
TODAY’S PLAN
• FINISH DIFFERENT TYPES OF TRANSPORT ACROSS THE CELL
• SECTIONS 7.3 AND 7.4 QUESTIONS
Cell Specialization

In multicellular organisms there is a
division of labor among the specialized
cells
Levels of Organization
cell
tissue
organ
organism
organ system
• AFTER YOU HAVE FINISHED THE GRAPHIC ORGANIZERS, WORK ON
THE 7.3 ASSESSMENT QUESTIONS (1 A, B, C, AND 2 A, B, C. PAGE
213). WRITE THESE IN YOUR NOTEBOOK/JOURNAL.
• DO QUESTIONS 2-3 FROM ANALYZING DATA SECTION (PAGE 216),
AFTER READING SECTION 7.4 (PAGES 214-216)
BIOLOGY
12-9-15
8TH ENTRY TASK FOR CHAPTER 7 – THE CELL
PLEASE GET A BOOK!
LEARNING OBJECTIVE:
LEVELS OF ORGANIZATION IN BIOLOGY
ENTRY TASK:
EXPLAIN HOW THERMOREGULATION IS AN EXAMPLE
OF HOMEOSTASIS AND A NEGATIVE FEEDBACK
HTTPS://WWW.YOUTUBE.COM/WATCH?V=KFY92HDAAH0
TODAY’S PLAN
• DIALYSIS TUBBING AS A MODEL OF A CELL MEMBRANE
EXAMPLES OF HOMEOSTASIS IN HUMANS
• THERMOREGULATION
• GLUCOSE REGULATION
https://www.youtube.com/watch?v=CLv3SkF_Eag
https://www.youtube.com/watch?v=QKT47A-LBj4
BIOLOGY
12-10-15
9TH ENTRY TASK FOR CHAPTER 7 – THE CELL
LEARNING OBJECTIVE:
CHECK YOUR KNOWLEDGE FOR CHAPTER 7
ENTRY TASK:
PLACE IN ORDER FROM SIMPLER TO MORE
COMPLEX
TISSUE
ORGAN
CELL
ORGANISM
TODAY’S PLAN
• CHAPTER 7 TEST
• GET RESULTS AND FINISH ‘DIFFUSION LAB QUESTIONS