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Class Notes at University of Maryland (page 463)

BSCI 207 Lecture Notes - Lecture 20: Gametophyte, Gymnosperm, Double Fertilization

Plant Development I Notes 1.Gymnosperms = naked seeds without fruits 2.Angiosperms = seeds enveloped in ovary 3.All gymnosperms haplodiplontic 4.Flowers a.Evolution of gametophytes and double fertilization i.Macroscopic ma...

Biological Sciences Program
BSCI 207
Dr.Carleton
BSCI 207 Lecture Notes - Lecture 22: Casparian Strip, Water Potential, Endodermis

Plant Circulatory Systems 1.Plants have to actively move things around 2.Water a.Moves through xylem b.Pulled by tension made in leaves c.Xylem always moves from roots leaves 3.Sugars a.Move through phloem b.Pushed from si...

Biological Sciences Program
BSCI 207
Dr.Carleton
BSCI 207 Lecture Notes - Lecture 14: Herma, Flowering Plant, Cloning

Lecture 14 Sex Life History 1.All must outcross eventually or face extinction 2.Types of sexual systems a.Gonorchorismdioecy i.2 sexes, one male one female ii.Development must be regulated to prevent intersexual forms eit...

Biological Sciences Program
BSCI 207
Dr.Carleton
BSCI 207 Lecture Notes - Lecture 12: Gametophyte, Fertilisation, Sporophyte

Lecture 12 Notes The Costs and Benefits of Sex 1.3 things necessary to have sex a.Diploid life phase somewhere b.Meiosis c.Union of haploid gametes (syngamy or fertilization) 2.Eukaryotic sex was invented in unicellular or...

Biological Sciences Program
BSCI 207
Dr.Carleton
BSCI 207 Lecture Notes - Lecture 23: Partial Pressure, Hemoglobin, Acidosis

Gas Exchange in Animals Notes 1.Limits to gas exchange a.Water solubility i.Warm water holds less gas than cold ii.Different gasses have different solubilities in water b.Oxygen influx and CO efflux must occur at same rate...

Biological Sciences Program
BSCI 207
Dr.Carleton
BSCI 207 Lecture Notes - Lecture 18: Motility, Ecdysone, Thyroid Hormones

Complex Life Histories Notes 1.Sessile adults cannot disperse motile larvae a.Trocophore larva found in many lophotrochozoans i.Lopho = type of feeding methodapparatus ii.Trocophore = type of larva iii.Basically a feeding ...

Biological Sciences Program
BSCI 207
Dr.Carleton
BSCI 207 Lecture Notes - Lecture 21: Root Hair, Ion, Hydrophile

Nutrient Assimilation Notes 1.End of hormone discussion a.Phosphate deficient = purple, potassium = redyellow, nitrogen = redyellow in center b.Micronutrients important get it from the soil i.A horizon = topsoil with inorg...

Biological Sciences Program
BSCI 207
Dr.Carleton
BSCI 207 Lecture Notes - Lecture 6: Atp Synthase, Giant Tube Worm, Oxidative Phosphorylation

Lecture 6 Bioenergetics 1.Energy metabolism occurs in small steps a.If glucose burned quickly, all lost as heat b.Slow break down allows for controlled movement of energy and formation of ATP 2.Substratelevel phosphorylati...

Biological Sciences Program
BSCI 207
Dr.Carleton
BSCI 207 Lecture Notes - Lecture 4: Superheated Water, Pyrite, Chemical Evolution

Lecture 4 Origins Evolution of Life 1.Prebiotic earth a.Chemicals formed in ocean increasing chemical complexity 2.Early Life a.Microbial organisms 3.52.6 BYA b.Multicellular organisms by 1 BYA 3.Advanced life a.Complex l...

Biological Sciences Program
BSCI 207
Dr.Carleton
BSCI 207 Lecture Notes - Lecture 8: Glycerol, Viscosity, Gibbs Free Energy

Lecture 8 Diffusion 1.Diffusion a.Random molecular motion(Brownian motion) which redistributes molecules from high to low concentration b.Gibbs free energy drives diffusion will always be spontaneous because not a reaction...

Biological Sciences Program
BSCI 207
Dr.Carleton
BSCI 207 Lecture Notes - Lecture 3: Ribosomal Rna, Nuclear Dna, Mutation Rate

Lecture 3 Tree of Life 1. Phylogenetic trees a. Monophyletic groups share derived traits b. DNA, RNA, amino acids are molecular data used for phylogenies 2. Molecular data for phylogenies a. Dna mutates slowly and steadily...

Biological Sciences Program
BSCI 207
Dr.Carleton
BSCI 207 Lecture Notes - Lecture 10: Allometry, Gamete, Sterol

Lecture 10 Biological Implications of Scaling 1.A valonia (big unicellular) like cell a.As size increases and surfacevolume decreases cells begin to suffer from i.Inefficient gas exchange and nutrient uptake ii. Increased ...

Biological Sciences Program
BSCI 207
Dr.Carleton
BSCI 207 Lecture Notes - Lecture 11: Peptidoglycan, Volvox, Multicellular Organism

Lecture 11 Origins of Multicellularity 1.Intro a.Multicellularity evolved numerous times 2.Evolutionary origins a.The fossil record i.Marine fungi evolve first ii.Cambrian explosion = rapid increase of multicellularity iii...

Biological Sciences Program
BSCI 207
Dr.Carleton
BSCI 222 Lecture Notes - Lecture 17: Nuclear Dna, Bantu Languages, Lactase

10.30.15 BSCI 189I 17 African Migrations Diversity Certainty vs Probability: firm belief vs scientific likelihood African populations have lived in their native continent for longer than any other indigenous populations i...

Biological Sciences Program
BSCI 222
Dr.Presson
BSCI 189I Lecture 18: BSCI 189I African American Notes

11.2.15 BSCI 189I African American Notes Individual African Ancestry among African Americans using autosomal markers Autosomal ancestry of selfdescribed African Americans in the US Each vertical line is one individual Each...

Biological Sciences Program
BSCI 222
Dr.Presson

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