General Physiology (BIOL 108): Course Orientation and Study Guide

General Physiology: Course Overview

Introduction

General Physiology (BIOL 108) is a foundational course for biology majors, focusing on the physiological processes in plants and animals. The course is divided into two main parts: plant physiology and animal physiology. It aims to provide students with a comprehensive understanding of the structures and functions of living organisms at the molecular, cellular, and organismal levels.

Course Structure and Learning Outcomes

Course Description

• The course covers major physiological concepts and principles in both plants and animals.

• Emphasis is placed on the adaptation of organisms to different stimuli and environments.

• Students will learn about the integration of physiological processes from the molecular to the organismal level.

Course Learning Outcomes

• Compare and contrast the major plant and animal cell structures and processes.

• Identify and discuss the major physiological mechanisms necessary for maintaining plant and animal functions.

• Identify and relate the physiological characteristics of the major plant and animal parts and their functions.

• Evaluate and summarize scientific information and apply concepts learned in class to laboratory methods and real-world scenarios.

Course Content Outline

I. Plant Cell Architecture: Bio-Organization and Water Absorption

• Overview of plant cell morphoanatomy and functions

• Structure and properties of water

• Transport processes in plants

• Water absorption and transpiration

II. Mineral Nutrition in Plants

• Uptake and absorption of minerals

• Functions of mineral elements

• Symptoms of mineral deficiencies

III. Photosynthesis

• Factors affecting photosynthesis

• Photoreception

• Physiological and ecological considerations

• Key Equation: $6CO_2 + 6H_2O + light \rightarrow C_6H_{12}O_6 + 6O_2$

IV. Respiration in Plants

• Aerobic and anaerobic pathways

• Oxidative phosphorylation

• Lipid metabolism

• Key Equation (Aerobic Respiration): $C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + ATP$

V. Plant Growth and Development

• Cellular basis of plant development

• Phytohormones and related compounds (Auxin, Gibberellin, Cytokinin, Abscisic Acid, Ethylene, other growth regulators)

• Control of flowering, seed germination and dormancy

• Biological clock: rhythms of life

• Senescence

VI. The Animal and Its Environment

• Concept of homeostasis and physiological mechanisms

• Cell physiology

• Cellular transport

• Signal transduction

• Definition: Homeostasis is the maintenance of a stable internal environment despite external changes.

VII. Neurophysiology

• Nerves, properties, and transmission of impulses

• Sensory and motor physiology

• Neural control of muscle contraction

• Structural basis and chemistry of muscle contraction

• Key Equation (Nernst Equation): $E = \frac{RT}{zF} \ln \frac{[\text{ion outside}]}{[\text{ion inside}]}$

VIII. Circulation and Respiratory Physiology

• General properties of circulation and respiration

• Types of hearts and circulatory patterns

• Physiological properties of the heart and cardiac cycle

• Body fluids and blood

• Respiratory mechanisms of terrestrial and aquatic animals

• Phases of respiration

• Regulation of cardiovascular and respiratory functions

IX. Digestion

• Nutritional requirements and feeding types

• Digestion and absorption

• Movement and secretory functions of the alimentary tract and digestive glands

• Coordination and regulation of digestive processes

X. Metabolism and Thermoregulation

• Energy metabolism: glycolysis, Krebs cycle, electron transport chain

• Major metabolic pathways: carbohydrates, proteins, lipids, nucleic acids

• Metabolic rate and thermoregulation

• Temperature relations of ectotherms and endotherms

• Thermostatic regulation of body temperature

• Key Equation (Glycolysis): $C_6H_{12}O_6 + 2NAD^+ + 2ADP + 2P_i \rightarrow 2C_3H_4O_3 + 2NADH + 2ATP + 2H_2O$

XI. Osmoregulation and Excretion

• Osmoregulation in terrestrial and aquatic animals

• Osmoregulatory organs

• Vertebrate renal systems

• Urine formation

• Renal regulatory organs

XII. Endocrine Systems

• Concept of first and second messengers

• Chemical regulators and their functions: neurotransmitters, neurosecretions, hormones

• Definition: Hormones are chemical messengers secreted by endocrine glands that regulate physiological processes.

Key Terms and Definitions

• Physiology: The study of the functions and mechanisms in a living system.

• Homeostasis: The maintenance of a stable internal environment.

• Photosynthesis: The process by which green plants convert light energy into chemical energy.

• Respiration: The metabolic process by which organisms obtain energy by oxidizing nutrients.

• Osmoregulation: The control of water and salt concentrations in the body.

• Endocrine System: The collection of glands that produce hormones regulating metabolism, growth, and development.

Sample Table: Comparison of Plant and Animal Physiology

Feature	Plant Physiology	Animal Physiology
Cell Structure	Cell wall, chloroplasts, large central vacuole	No cell wall, no chloroplasts, small vacuoles
Energy Acquisition	Photosynthesis	Ingestion and digestion of food
Movement	Generally immobile, growth-based movement	Locomotion via muscles and nervous system
Regulation	Hormones (phytohormones)	Hormones (endocrine system), nervous system

Course Requirements and Grading System

• Attendance is mandatory; more than 20% unexcused absences result in a failing grade.

• Assessment includes midterm and final exams, quizzes, assignments, and laboratory activities.

• Passing rate is 60%.

Component	Percentage
Lecture (Major Exams, Quizzes, Assignments)	60%
Laboratory (Performance, Reports, Practical)	40%

Additional info:

• Students are expected to comply with academic integrity policies and not share course materials outside the university.

• Laboratory activities are to be compiled and submitted online.

• Time management and active participation are key to success in this course.