General Biology II: Course Overview and Core Concepts Study Guide

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General Biology II: Course Overview and Core Concepts

Course Introduction

This course is the second part of a year-long sequence in introductory biology for college students. It covers the diversity, structure, and function of all Domains and Kingdoms of life, with a focus on evolutionary principles, population genetics, and ecological interactions. The course includes both lecture and laboratory components.

Core Concepts in General Biology

1. Evolution

Evolution is a central theme in biology, explaining the diversity and adaptation of organisms over time. It is driven by genetic variation, natural selection, and other mechanisms.

Definition: Evolution refers to the change in the heritable characteristics of biological populations over successive generations.
Key Points:
- Organisms all derive from a common ancestor.
- Changes in characteristics occur due to various mechanisms, including mutation, gene flow, genetic drift, and natural selection.
- Allele frequencies change due to random and non-random processes.
- Adaptation leads to increased fitness in specific environments.
Example: The evolution of antibiotic resistance in bacteria is a result of natural selection acting on genetic variation.

2. Information Flow

Information flow in biology refers to the transmission of genetic information from one generation to the next and its expression within organisms.

Definition: The process by which genetic information is passed from parents to offspring and expressed in the phenotype.
Key Points:
- Genes are passed through sexual reproduction (meiosis), producing gametes.
- Meiosis and sexual reproduction result in genetic recombination and diversity.
- Mendel’s Laws of Inheritance explain the patterns of trait transmission.
- Mutations and recombination lead to new genetic combinations in offspring.
Example: Mendel’s experiments with pea plants demonstrated how traits are inherited according to predictable patterns.
Formula:

3. Transformations of Energy and Matter

All living organisms require energy and matter to survive, grow, and reproduce. Energy transformations are fundamental to ecosystem function.

Definition: The conversion of energy and matter from one form to another within biological systems.
Key Points:
- Most energy in the biosphere comes from the sun.
- Photosynthesis captures solar energy and converts it to chemical energy.
- Producers (autotrophs) and consumers (heterotrophs) harvest energy.
- Energy is lost at each trophic level, typically as heat.
Example: Plants use photosynthesis to convert sunlight into glucose, which is then used by animals for energy.
Formula:

4. Systems

Biological systems are complex networks of interacting components, from molecules to ecosystems.

Definition: Systems biology studies the interactions and relationships among biological components.
Key Points:
- Interactions occur at multiple levels: molecular, cellular, organismal, and ecological.
- Organisms integrate internal and external information to maintain homeostasis.
- Changes in one part of a system can affect the whole system.
- Human activity can have significant impacts on ecosystems.
Example: The carbon cycle involves interactions between plants, animals, and the environment, affecting global climate.

Course Schedule: Major Topics

The following topics are covered throughout the semester, each corresponding to textbook chapters:

Week	Lecture Module	Chapter
1	Introduction, Genetics Overview	2
2	Genetics, Sex Linked Traits and Pedigree's	22, 23
3	Evolution by Natural Selection, Evolutionary Processes	24
4	Speciation, Phylogeny	25
5	History of Life	26, 27
6	Diversity of Prokaryotes	28
7	Diversity of Eukaryotes	29
8	Diversity of Fungi	29
9	Diversity of Green Algae and Plants	30
10	Plant Form and Function, Plant Sensory Systems	34, 37
11	Water and Sugar Transport in Plants, Plant Nutrition	35, 36
12	Animal Diversity	39, 43
13	Animal Form and Function, Animal Nervous System	44, 46
14	Introduction to Ecology, Behavioral Ecology, Population and Community Ecology	50, 51, 52

Grading Policy

Grades are determined by performance in assignments, quizzes, exams, and laboratory work. The breakdown is as follows:

Course Activity	Point Value
LBL Assignments (5pts x 10)	100
Root Quizzes (5pts x 50)	200
Quizzes (15pts x 10)	150
In Class Activities/Misc. Assignments	100
Midterm (100pts x 3)	300
Final (100pts x 1)	100
Lab	150
TOTAL	1000 points

Grading Scale:

Percentage	Grade
100-93.0%	A
92.9-90.0%	A-
89.9-87.0%	B+
86.9-83.0%	B
82.9-80.0%	B-
79.9-77.0%	C+
76.9-73.0%	C
72.9-70.0%	C-
69.9-67.0%	D+
66.9-63.0%	D
62.9-60.0%	D-
Below 60.0%	F

Course Protocols and Support

Attendance: Required for lectures and labs.
Assignments: Includes Learn Before Lecture (LBL), quizzes, in-class activities, midterms, and a cumulative final exam.
Laboratory: Attendance and participation are mandatory; lab is a separate graded component.
Academic Honesty: Students must adhere to the university’s code of conduct and avoid plagiarism or cheating.
Support Services: Academic, counseling, and technical support are available to all students.
Diversity and Inclusion: The course fosters a respectful and inclusive learning environment for all students.
Disability Services: Accommodations are available for students with disabilities.

Textbook and Materials

Textbook: Freeman, Scott (2024). Biological Science, 8th edition, Prentice Hall with Mastering Biology.
Canvas: Online platform for course materials, assignments, and grades.

Summary

This study guide provides an overview of the General Biology II course, including its main topics, core biological concepts, grading policy, and support resources. Students are expected to engage with the material through lectures, laboratory work, and active participation, building a strong foundation in modern biology.