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Class Notes for Biological Sciences Program at University of Maryland

BSCI 105 Lecture Notes - Lecture 40: Brainstem, Cellular Differentiation, Crispr
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BSCI105 Lecture 40 Cloning Organisms and Using Stem Cells The Big Picture Organismal cloning produces offspring from a single cell that are genetically identical to the source of the single cell The most frequent current m...

Biological Sciences Program
BSCI 105
Keller
BSCI 222 Lecture Notes - Lecture 26: Molecular Evolution, Molecular Clock, Molecular Phylogenetics
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BSCI 222 Lecture 26 Evolutionary Genetics Unexpected Variation prevailing view: most individuals of the same species have same genotype with occasional mutants but, doesnt explain high levels of variation for alloenzymes t...

Biological Sciences Program
BSCI 222
Kocher
BSCI 106 Lecture Notes - Lecture 26: Gross Domestic Product, Neanderthal, Ecological Footprint
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BSCI106 Lecture 26 Macroevolution Extinctions species go extinct for many different reasons background extinction typical change in competition mass extinction events unusually high extinction rates due to very harsh condi...

Biological Sciences Program
BSCI 106
Alexandra Bely
BSCI 207 Lecture 38: Action Potential and Animal Development
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BSCI207 Lecture 38 Action Potential and Animal Development Changes in Membrane Potential: Changes in membrane potential can be either graded or allornone depending on whether threshold (50 mV) is exceeded Graded change in ...

Biological Sciences Program
BSCI 207
Leo Shapiro
BSCI 105 Lecture Notes - Lecture 39: P53, Tumor Suppressor Gene, Spindle Apparatus
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BSCI105 Lecture 39 Regulation of the Cell Cycle Cyclins bind with CDKs to give proteins new biological functions The cell cycle is highly regulated and defects can lead to major problems Three major checkpoints regulate th...

Biological Sciences Program
BSCI 105
Keller
BSCI 222 Lecture Notes - Lecture 25: Effective Population Size, Genetic Drift, Coefficient Of Relationship
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BSCI 222 Lecture 25 Population Genetics Alleles the frequency of alleles in populations p = freq. of allele A q = freq. of allele a do NOT confuse dominance with frequency! the dominant allele can be at a low freq. in the ...

Biological Sciences Program
BSCI 222
Kocher
BSCI 106 Lecture Notes - Lecture 25: Diploblasty, Nematode, Stabilizing Selection
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BSCI106 Lecture 25 Fungi Fungi Fungi evolved from aquatic single celled flagellated protists extracellular digestion fungi feed by absorption secrete enzymes onto food absorb small molecules important decomposers some are ...

Biological Sciences Program
BSCI 106
Alexandra Bely
BSCI 105 Lecture Notes - Lecture 38: Spindle Apparatus, Chromatin, Microtubule
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BSCI105 Lecture 38 The Cell Cycle Cellular reproduction requires accurate duplication of genetic material and distribution between daughter cells In eukaryotic cells, this process occurs during the cell cycle The cell cycl...

Biological Sciences Program
BSCI 105
Keller
BSCI 207 Lecture Notes - Lecture 37: Cytoplasm, Goldman Equation, Walther Nernst
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BSCI207 Lecture 37 Neurons (mathbench and textbook) Sending Messages Around the Body: It would take a long time without neurons (if you touch something hot, you dont get permanent damage because signal is sent to spinal co...

Biological Sciences Program
BSCI 207
Leo Shapiro
BSCI 105 Lecture Notes - Lecture 37: Telophase, Growth Factor, Phospholipid
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BSCI105 Lecture 37 Cell Communication Signal Transduction: I Phosphorylation cascades Involved multiple protein kinases acting on each other Phosphatases remove phosphate groups Functions: Regulate synthesis and breakdown ...

Biological Sciences Program
BSCI 105
Keller
BSCI 222 Lecture Notes - Lecture 24: Heritability, Overdominance, Covariance
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BSCI 222 Lecture 24 Quantitative Genetics Discontinuous Characteristics Qualitative few, easily distinguishable phenotypes Continuous Characteristics Quantitative continuous range of phenotypes wide range Applicable Equati...

Biological Sciences Program
BSCI 222
Kocher
BSCI 207 Lecture Notes - Lecture 36: Forward Thrust, Lift-Induced Drag, Boeing 777
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BSCI207 Lecture 36 Finish Flying and Begin Swimming Moving Forward: Thrust: force propelling an object in a particular direction (needs to overcome drag force) Drag: force resisting movement of an object through fluid To m...

Biological Sciences Program
BSCI 207
Leo Shapiro
BSCI 105 Lecture Notes - Lecture 36: Signal Transduction, Cytosol, Asthma
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BSCI105 Lecture 36 Cell Communication The Big Picture Communication between cells is vital for integrating responses to both external and internal signals Most signaling involves binding of a ligand from one cell to a prot...

Biological Sciences Program
BSCI 105
Keller
BSCI 106 Lecture 24: Eukaryotes: Protists and Origins of Multicellularity
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BSCI106 Lecture 24 Eukaryotes: Protists and Origins of Multicellularity Origins of Eukaryotes singled celled cell wall nuclear envelope mitochondria linear chromosomes mitosis and meiosis occurred early on ~2bya Loss of Ce...

Biological Sciences Program
BSCI 106
Alexandra Bely
BSCI 207 Lecture Notes - Lecture 35: Airfoil, Mass Flow, Wing Loading
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BSCI207 Lecture 35 Flight Continued How to Produce Lift: Lift is the force that counteracts gravity (but it can be any force right angle to the direction of overall fluid flow) Wind blowing right angle to sail (in our case...

Biological Sciences Program
BSCI 207
Leo Shapiro

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