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Essential Equations for College Biology: Structure, Function, Genetics, and Ecology

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Water Potential

  • How Water Enters Xylem
    07:59
  • Cohesion-Tension Theory
    05:59
  • Water Potential
    11:32

Introduction to Population Ecology

  • Factors Affecting Population Size (N)
    01:48
  • Population Size & Density
    01:52
  • Introduction to Population Ecology Example 3
    01:51

Population Sampling Methods

  • Sampling Mobile Organisms: Mark & Recapture
    03:12
  • Population Sampling Methods Example 1
    01:54
  • Sampling Stationary Organisms: Transects & Quadrats
    02:31

Population Demography

  • Life Tables
    03:49
  • Population Demography Example 1
    02:18
  • Survivorship Curves
    02:54

Factors Limiting Population Growth

  • Density-Dependent Factors
    02:37
  • Factors Limiting Population Growth
    00:51
  • Density-Dependent vs. Density-Independent Factors
    03:14

Introduction to Population Growth Models

  • Introduction to Population Growth Models Example 3
    02:52
  • Introduction to Population Growth Models
    01:09
  • Assumptions of Population Growth Models
    03:29

Linear Population Growth

  • Linear Population Growth
    02:47
  • Linear Population Growth Example 1
    01:39

Exponential Population Growth

  • Exponential Population Growth Example 2
    07:34
  • Exponential Population Growth
    03:05
  • Exponential Population Growth Equations
    06:35

Logistic Population Growth

  • Summary of Key Features & Assumptions for Each Population Growth Model
    07:28
  • Logistic Growth in a Limited Environment
    05:00
  • Logistic Population Growth Example 1
    04:28

The Hardy-Weinberg Principle

  • Predicting Allele or Genotype Frequencies Using Hardy-Weinberg
    03:31
  • Testing if a Population is in Hardy-Weinberg Equilibrium
    08:26
  • B. Calculating Allele Frequency from a Genotype Frequency
    03:20

Punnett Square Probability

  • Rule of Multiplication (the AND Rule)
    06:30
  • Rule of Addition (the OR Rule)
    05:58
  • Punnett Square Probability
    03:38

Laws of Thermodynamics

  • Second Law of Thermodynamics
    02:53
  • Entropy
    03:21
  • First Law of Thermodynamics
    04:43