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Showing results - 31 to 40 of 43
Inside the living cell: how cells are controlled
13:09

Inside the living cell: how cells are controlled

This program describes the genetic code, and how genetic instructions carried on DNA are transcribed into RNA. Explains how genes dictate enzymes and how enzymes produce specific reactions in cell processes. This highly visual tour of the processe...

Inside the living cell: how cells reproduce
14:38

Inside the living cell: how cells reproduce

This program discusses how DNA replicates, how copy errors occur and are remedied by repair enzymes, and how DNA is compressed into chromosomes making possible mitosis and cell division. This highly visual tour of the processes that keep life opera...

Visualizing cell processes: cell movement and transport
14:54

Visualizing cell processes: cell movement and transport

Topics: Structure and Behavior of the Plasma Membrane, Osmosis, Transport Proteins, Phagocytosis, Pinocytosis, Receptor Mediated Endocytosis, Golgi Function, Lysosomes and Hydrolytic Digestion, Microtubules, Cilia, Actin, and Myosin Motor Proteins.

Visualizing cell processes: photosynthesis and cellular respiration
16:51

Visualizing cell processes: photosynthesis and cellular respiration

Through live action and animated models, this program illustrates the basic biochemical processes involved in photosynthesis and cellular respiration. Cellular Respiration Topics: Glycolysis and Fermentation, Mitochondrion Structure, Aerobic Respira...

Branches on the tree of life: the biology of plants
17:56

Branches on the tree of life: the biology of plants

Clear graphic animation is used to describe the molecular level mechanisms of photosynthesis. Major plant groups include mosses, liverworts, ferns, horsetails, and the seed plants (gymnosperms and flowering plants). This is a good general introducti...

Branches on the tree of life: the biology of viruses
17:47

Branches on the tree of life: the biology of viruses

This program examines the discovery of viruses and their structure, how viruses are studied, how they infect their hosts and how they replicate. Details are provided on the T-4 bacteriophage and retroviruses such as HIV.

Branches on the tree of life: the biology of chordates
18:10

Branches on the tree of life: the biology of chordates

The Phylum Chordata includes tunicates, sea lancelets, hagfish, and all familiar vertebrate animals. This program explores how these seemingly diverse animals evolved and how the group is unified by four characteristic structures: a hollow dorsal ne...

Branches on the tree of life: the biology of bacteria
16:56

Branches on the tree of life: the biology of bacteria

This program uses compelling microscopy of living bacteria to examine their structure, physiology, behavior, and the vital roles these microbes play in the biosphere, including oxygen production (cyanobacteria), decomposition, nitrogen fixation, and...

The biology of lakes, ponds, streams, and wetlands
38:27

The biology of lakes, ponds, streams, and wetlands

Open Water Environments: Adaptations for planktonic life are observed in Daphnia and other cladocerans, copepods, rotifers, and planktonic algae. Bottom Environment: Explores bacterial decomposition, recycling of materials, adaptations for bottom li...

Branches on the tree of life: the biology of annelids
13:46

Branches on the tree of life: the biology of annelids

Worms with segmented bodies make up the Phylum Annelida. This program explores the three classes of annelids: Class Polychaeta (feeding, locomotion, and larval stages), Class Oligochaeta (lifestyles, feeding adaptations, and anatomy of freshwater o...