Ch. 11: Cell-Cell Interactions
PART 1
BEFORE YOU START: Give your name to your peers and say one thing you remember
about the chapter/section.
You are going to talk about the components of the cell surface and interactions between
cells. It would be easiest if you made an outline of the material to help categorize. Talk
about the cell surface of plants and animals by answering these questions:
o What is the composition and function of primary and secondary cell walls?
o What does extracellular matrix consist of?
o There are three “main” layers to extracellular matrix.
Now talk about cell connections (communication and adherence) in plants and animals.
What general things do you remember?
o What are the means of adherence between animal cells?
o What are the means of communication between animal cells?
o What are the means of communication between plant cells?
Ch. 11: Cell-Cell Interactions
PART 2
BEFORE YOU START: Give your name to your peers and say one thing you remember
about the chapter/section.
You are going to talk about long distance communication. It would be easiest if you
made an outline of the material to help categorize. Make an outline of the four steps of
signal reception and include:
o Lipid insoluble and soluble hormones.
o G-protein linked receptors and enzyme linked receptors.
o The two kinds of signal responses.
Separately, discuss the relationship between dissociation constant and ligand receptor
affinity. Where does this fit in your outline?
Ch. 22: Principles of Development (Cell Specialization)
BEFORE YOU START: Give your name to your peers and say one thing you remember
about the chapter/section.
You are going to talk about development. It would be easiest if you made an outline of
the material to help categorize. Talk about the five cellular processes that underlie
development. Include:
o What meristems and stem cells are
o Differential gene expression. How do we know differentiated cells are genetically
equivalent?
Now talk about pattern formation in a developing organism. Outline the kinds of
regulatory genes that act in a sequence (hierarchy of transcription). Include:
o The functions of bicoid, nanos, and ultrabithorax.
o The conservation of Hox genes.
Stem Cells and Endocrine Signaling
BEFORE YOU START: Give your name to your peers and say one thing you remember
about the chapter/section.
You are going to talk about stem cells. It would be easiest if you made an outline of the
material to help categorize. Outline the types of stem cells and their functions (fates).
o What type of cell can form a whole organism?
o Are there stem cells in the adult?
o In what category are hematopoietic stem cells and where do they come from?
Outline the major differences between animal and plant development. Include:
o
o
o
o
The difference between stem cells and meristems.
Cell migration.
The role of auxin.
Plant homeotic genes.
Now make a brief outline talking about the major categories of chemical signals.
Ch. 49.1, 50: Reproduction
BEFORE YOU START: Give your name to your peers and say one thing you remember
about the chapter/section.
You are going to talk about reproduction. It would be easiest if you made an outline of
the material to help categorize. Outline the differences between sexual and asexual
reproduction, including the different types of asexual reproduction.
Now talk about gametogenesis. Make an outline distinguishing gametogenesis from
spermatogenesis:
o Talk about the ploidy.
o What is the difference between the two types of gametes?
Now move on to talk about sex determination. Make an outline of the hormonal
regulation of reproduction in males and females. Include:
o How gonads form.
o How secondary sex characteristics form.
o How GnRH, LH, and FSH effect both systems.
Ch. 45: Gas Exchange and Circulation
BEFORE YOU START: Give your name to your peers and say one thing you remember
about the chapter/section.
You are going to talk about gas exchange. It would be easiest if you made an outline of
the material to help categorize. Start by outlining the four steps of gas exchange.
Include:
o How gas exchange happens in relation to the PO2 of oxygen in the environment
and in tissues.
o The difference between exchange in the water and in air.
o How oxygen is carried in the blood – the role of hemoglobin.
o Cooperative binding in the oxygen-hemoglobin bending/dissociation curve.
Now move on to talk about circulation. Make a general outline of the difference
between open and closed circulatory systems. Then, starting from the heart, outline the
flow of blood though blood vessels in a four chambered hart.
o How is this different than circulation in a two-chambered heart?
o What is the difference between veins and arteries?
Ch. 38: Transport in Plants
BEFORE YOU START: Give your name to your peers and say one thing you remember
about the chapter/section.
You are going to talk about plant transport. It would be easiest if you made an outline
of the material to help categorize. Outline the two forces generated to move water from
the soil to the tops of plants. Include:
o Water potential.
o Transpiration.
o How does the opening and closing of stomata happen?
o Root pressure.
Now move on to talk about how water and nutrients move through the 2 vascular
systems. Include:
o How the cohesion-tension theory moves water up the xylem.
o How does this tie back to transpiration?
o What phloem loading and unloading is.
o How the pressure-flow hypothesis helps translocate phloem sap.