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Step-by-Step Guidance for College Biology Multiple Choice Questions

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Study Guide - Learn with Videos

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Prokaryotic & Eukaryotic Cells

  • Recap: Prokaryotic vs. Eukaryotic Cells
    04:26
  • Prokaryotic & Eukaryotic Cells
    05:54
  • Features of Bacterial Cells
    03:54

Introduction to Eukaryotic Organelles

  • Introduction to Eukaryotic Organelles
    03:45
  • Ribosomes
    06:51
  • Map of the Lesson on Eukaryotic Organelles
    02:43

Endomembrane System: Protein Secretion

  • Golgi Apparatus
    06:02
  • Endoplasmic Reticulum
    06:07
  • Nucleus
    06:32

Endomembrane System: Digestive Organelles

  • Central Vacuole
    03:35
  • Lysosomes & Peroxisomes
    05:38

Mitochondria & Chloroplasts

  • Chloroplasts
    03:16
  • Chloroplast Structure
    03:41
  • Mitochondria Structure
    04:45

Biological Membranes

  • Biological Membranes Example 1
    02:21
  • Biological Membranes
    06:04

Introduction to Membrane Transport

  • Map of the Lesson on Membrane Transport
    02:33
  • Introduction to Membrane Transport
    02:47
  • Which Molecules Freely Cross Membranes?
    07:10

Passive vs. Active Transport

  • Classes of Membrane Transport Proteins
    03:28
  • Passive vs. Active Transport
    04:18

Osmosis

  • Osmosis Example 1
    02:18
  • Osmosis
    05:59
  • Direction of Osmosis
    06:48

Simple and Facilitated Diffusion

  • Simple and Facilitated Diffusion
    05:10
  • Transport Proteins of Facilitated Diffusion
    04:49

Active Transport

  • Secondary Active Transport
    07:06
  • Active Transport
    02:37
  • Primary Active Transport
    02:53

Endocytosis and Exocytosis

  • Endocytosis and Exocytosis Example 1
    01:52
  • Endocytosis Allows Entry to the Cell
    04:18
  • Exocytosis Allows Exiting from the Cell
    02:28

Proteins

  • Protein Structure
    08:02
  • Amino Acids
    04:37
  • Proteins
    02:50

Hydrogen Bonding

  • Hydrogen Bonding
    05:03

Telomeres

  • Telomeres
    04:25

Introduction to DNA Replication

  • Unwinding the DNA: Topoisomerase, Helicase & SSBs
    05:10
  • Components of DNA Replication
    04:47
  • Origin of Replication
    03:33

Steps of DNA Replication

  • Steps of DNA Replication
    09:29

Central Dogma

  • Central Dogma
    05:45

Introduction to Transcription

  • Overview of Transcription
    07:44
  • Introduction to Transcription
    05:51

Steps of Transcription

  • 3) Termination of Transcription
    02:44
  • 1) Initiation of Transcription
    04:16
  • 2) Elongation of Transcription
    04:01

Introduction to Types of RNA

  • Introduction to Types of RNA
    07:20

Introduction to Translation

  • Ribosomal tRNA Binding Sites
    06:16
  • Ribosome Subunits
    08:42
  • Introduction to Translation
    06:12

Steps of Translation

  • 2) Elongation of Translation
    04:59
  • 3) Termination of Translation
    02:16
  • 1) Initiation of Translation
    05:03

Mutations

  • Mutations
    02:29
  • Types of Mutations
    08:44

Introduction to Regulation of Gene Expression

  • Positive vs Negative Gene Regulation
    02:17
  • Introduction to Regulation of Gene Expression
    06:40

Eukaryotic Chromatin Modifications

  • Eukaryotic Chromatin Modifications
    03:55
  • Histone Acetylation
    04:14
  • DNA Methylation
    03:39

Prokaryotic Gene Regulation via Operons

  • Inducible Operons
    04:25
  • Prokaryotic Gene Regulation via Operons
    00:53
  • Repressible Operons
    03:42

The Lac Operon

  • In the Absence of Lactose
    04:34
  • The Lac Operon
    07:06
  • In the Presence of Lactose
    03:56

Review of the Lac Operon & Trp Operon

  • Review of the Lac Operon & Trp Operon
    06:24

Scientific Method

  • Scientific Method Example 1
    01:35
  • Basic Theories of Biology
    03:03
  • Scientific Method
    06:29

Experimental Design

  • Variables
    07:36
  • Experimental Design Example 1
    02:50
  • Negative & Positive Controls
    07:42

Natural Selection and Evolution

  • Natural Selection Causes Adaptation
    07:48
  • Adaptation Improves Fitness
    02:57
  • Evolution can Occur Via Natural Selection
    04:32

Genetics and Allele Frequencies

  • Allele Frequencies
    06:36
  • Mendelian and Population Genetics
    04:26
  • Genetics and Allele Frequencies Example 1
    02:56

Natural Selection

  • Sexual Selection
    06:17
  • Natural Selection
    04:43
  • Natural Selection Example 3
    04:18