Transcript September 26 AP Biology - John D. O`Bryant School of Math & Science

AP Biology
John D. O’Bryant School of
Mathematics and Science
September 26, 2012
AP Biology
Agenda





Do Now (Quiz)
HW discussion
Cell Membranes: Evaluating Theoretical Models
Cell Membranes: Build-A-Membrane
Lorenzo’s Oil
AP Biology
Do Now (Quiz)
 1. Which of the following contains its own DNA
and ribosomes?

A) lysosome
B) vacuole
C) mitochondrion
D) Golgi apparatus
E) peroxisome
AP Biology
Do Now (Quiz)
 2. When physicians perform an organ transplant,





they choose a donor whose tissues match those
of the recipient as closely as possible. Which of
the following cell components are being
matched?
A) plasma membrane phospholipids
B) plasma membrane proteins
C) cell-surface carbohydrates
D) plasma membrane cholesterols
E) cytoskeletal elements
AP Biology
Do Now (Quiz)
 3. The chemical reactions involved in respiration are
virtually identical between prokaryotic and eukaryotic
cells. In eukaryotic cells, ATP is synthesized primarily
on the inner membrane of the mitochondria. Where
are the corresponding reactions likely to occur in
prokaryotic respiration?

A) in the cytoplasm
B) on the inner mitochondrial membrane
C) on the endoplasmic reticulum
D) on the inner plasma membrane
E) on the inner nuclear envelope
AP Biology
Do Now (Quiz)
 4. The mitochondrion, like the nucleus, has two or more
membrane layers. How is the innermost of these layers
different from that of the nucleus?


A) The inner mitochondrial membrane is highly folded.
B) The two membranes are biochemically very different.
C) The space between the two layers of the nuclear
membrane is larger.
D) The inner membrane of the mitochondrion is
separated out into thylakoids.
E) The inner mitochondrial membrane is devoid of nearly
all proteins.
AP Biology
Do Now (Quiz)
 5. Ions can travel directly from the cytoplasm of
one animal cell to the cytoplasm of an adjacent
cell through


A) plasmodesmata.
B) intermediate filaments.
C) tight junctions.
D) desmosomes.
E) gap junctions.
AP Biology
Do Now (Quiz)
 6. Cyanide, a highly toxic poison, binds with at
least one molecule involved in producing ATP. If
a cell is exposed to cyanide, most of the cyanide
would be found within the

A) mitochondria.
B) ribosomes.
C) peroxisomes.
D) lysosomes.
E) endoplasmic reticulum.

AP Biology
Cell Membranes: Theoretical Models
AP Biology
Build-A-Membrane
AP Biology
Lorenzo’s Oil
AP Biology