Today in C block Lindsey showed us the awesome design for the AP Bio t-shirt. They are really cute and everyone should get one! She's going to post the link on the blog so that B block can see the shirts, too. We also took a vocab quiz and took more notes on the nervous system.
Chapter 50 Vocab:
Cardiac muscle
a type of muscle that forms the contractile wall of the heart. Its cells are joined by intercalated disks that relay each heartbeat
Cardiac muscle
a type of muscle that forms the contractile wall of the heart. Its cells are joined by intercalated disks that relay each heartbeat
sarcoplasmic reticulum
a specialized endoplasmic reticulum that regulates the calcium concentration in the cytosol
a specialized endoplasmic reticulum that regulates the calcium concentration in the cytosol
Z lines
The borders of a sacromere
The borders of a sacromere
I band
The area near the edge of the sacromere where there are only thin filaments
The area near the edge of the sacromere where there are only thin filaments
Cone cell
one of two types of photoreceptors in the vertebrate eye; detects color during the day
one of two types of photoreceptors in the vertebrate eye; detects color during the day
thick filament
a filament composed of staggered arrays of myosin molecules; a component of myofibrils in muscle fibers
a filament composed of staggered arrays of myosin molecules; a component of myofibrils in muscle fibers
Hydrostatic skeleton
a skeletal system composed of fluid held under pressure in a closed body compartment; the main skeleton of most cnidarians, flatworms, nematods, and annelids
rod cell
one of two kinds of photoreceptors in the vertebrate retina; sensitive to black and white and enables night vision
thin filament
the smaller of the two myofilaments consisting of two strands of actin and two strands of regulatory protein coiled around one another
the smaller of the two myofilaments consisting of two strands of actin and two strands of regulatory protein coiled around one another
Myofilaments
Hair cell
a type of mechanoreceptor that detects sound waves and other forms of movement in air or water
a type of mechanoreceptor that detects sound waves and other forms of movement in air or water
rhodopsin
a visual pigment consisting of retinal and opsin. When rhodopsin absorbs light, the retinal changes shape and dissociates from the opsin, after which it is converted back to its original form
a visual pigment consisting of retinal and opsin. When rhodopsin absorbs light, the retinal changes shape and dissociates from the opsin, after which it is converted back to its original form
Amplification
the strengthening of stimulus energy that is otherwise too weak to be carried into the nervous system
the strengthening of stimulus energy that is otherwise too weak to be carried into the nervous system
pic n/a
Nocireceptor
A class of naked dendrites in the epidermis of the skin
Nocireceptor
A class of naked dendrites in the epidermis of the skin
interoreceptor
a sensory receptor that detects stimuli within the body, such as blood pressure and body position
Roots:
vitre-glass
tympan-a drum
sarco-flesh
sacc-a sack
omma-the eye
mechano-an instrument
coch- a snail
utric- a leather bag
tetan-rigid
rhodo-red
olfact-smell
ama-together
tropo-turn
noci-harm
stato-standing
gusta-taste
fovea- a pit
Graph from class:
Questions from Ch 46-48 Take Home
1) Genetic mutations in asexually reproducing organisms lead to more evolutionary change than do genetic mutations in sexually reproducing ones because
A) asexually reproducing organisms, but not sexually reproducing organisms, pass mutations to their offspring
B) More genetic variation is present in organisms that reproduce asexually than is present in those that reproduce sexually
C) sexually reproducing organisms can produce more offspring in a given time than can sexually reproducing organisms
D) asexually reproducing organisms devote more time and energy to the process of reproduction than do sexually reproducing organisms
E) asexually reproducing organisms have more dominant genes than organisms that reproduce sexually
2) The Small portion of the embryo that will become its dorsal side develops from
A) morula
B) primitive streak
C) gray crescent
D) blastocoel
E) archenteron
3) Action potentials move along axons
A) by reversing the concentration gradients for sodium and potassium ions
B) more rapidly in myelinated than in non-myelinated axons
C) by the direct action of acetylcholine on the axonal membrane
D) by activating the sodium-potassium "pump" at each point along the axonal membrane
E) more slowly in axons of large than in small diameter
Answers: 1) A 2) C 3)A
Related FRQ
Related FRQ
http://www.collegeboard.com/prod_downloads/ap/students/biology/ap04_frq_biology_b.pdf
FRQ grading key
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