BIO1011 Lecture Flashcards
Explore Ebola Virus
Discussion point: Why is the Ebola virus not considered alive?
Reference image from CDC noting its threat.
Page 20: Reasoning for Ebola Virus
Characteristics of Ebola virus:
Not complex: lacks cell structure and membrane
Cannot respond to stimuli.
Page 21: Audience Questions
Interactive segment for audience inquiries.
Page 22: Energy Fundamentals
Vital concept: All living organisms require energy for survival.
Energy source: Derived from chemical bonds.
Page 23: Chemistry of Life
Elements are made of atoms.
Different atoms combine to create molecules linked by chemical bonds.
Page 24: Periodic Table Patterns
Number of electrons in valence shell.
Number of electron shells.
Trends in electronegativity.
Page 25: Periodic Table Patterns (Continued)
Reiteration of periodic trends, including increasing electronegativity.
Page 26: Periodic Table Patterns (Continued)
More emphasis on the increasing pattern of electronegativity.
Page 27: Noble Gases Exception
Noble Gases have low electronegativity due to full valence shells.
Page 28: Types of Bonds
Classification of bonds:
Intramolecular bonds: exist within molecules.
Intermolecular bonds: exist between molecules.
Page 29: Types of Intramolecular Bonds
Determined by electronegativity:
Covalent bonds (non-polar): Electrons shared equally.
Polar covalent bonds: Unequal sharing of electrons.
Ionic bonds: Exchange of electrons between atoms.
Page 30: Bond Types Quiz
Interactive question regarding bond type characterization.
Page 31: Calcium Chloride Bond Type
Inquiry on the type of bond formed by calcium chloride.
Page 32: Bond Types Comparison
Assessment of different bond types.
Page 33: Determining Polarity
Criteria for a molecule to be polar:
Contains polar bonds.
Non-symmetrical arrangement of atoms/charges.
Page 34: Questioning Chemistry Relevance
Provocative engagement about the relevance of chemistry.
Page 35: Chemical Bonds and Interactions
Definition of molecular behaviors based on bond types:
Non-polar molecules do not dissolve in water.
Polar molecules dissolve easily; might need protein channels for movement.
Ionic compounds disassociate in water and impact concentration gradients.
Page 36: Solubility Determinants
Molecules need to form hydrogen bonds with water for solubility.
Example of glucose interactions with water.
Page 37: Importance of Polarity
Solubility in water differs for polar/non-polar molecules.
Enables hydrogen bond formation.
Affects cell membrane structure and molecular movement.
Page 38: RbfA Protein Illustration
Representation of proteins:
How bonds affect structure: inter and intramolecular.
Page 39: Summary Points
Concepts defining life versus non-life.
Molecular anatomy:
Elements and their atomic composition.
Formation of molecules and reaction behavior in biological contexts.
Page 40: Upcoming Topics
Next week’s focus: Macromolecules.
Explore how chemical principles apply to larger biological molecules, such as proteins.