Descriptor
| Botany | 5 |
| Biology | 3 |
| College Science | 3 |
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| Secondary School Science | 3 |
| Biological Sciences | 2 |
| Instruction | 2 |
| Plant Science | 2 |
| Secondary Education | 2 |
| Demonstrations (Educational) | 1 |
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Author
| Freeland, P. W. | 5 |
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Peer reviewedFreeland, P. W. – Journal of Biological Education, 1974
Described are experiments for demonstrating essential features of substrate-induced enzyme synthesis based on the Jacob-Monod model, and for showing that the activity of certain genes can be modified by environmental temperature. (RH)
Descriptors: Biological Sciences, Botany, Environment, Heat
Peer reviewedFreeland, P. W. – Journal of Biological Education, 1976
A description of four rapid tests to determine the viability of stored seeds are given. Typical results are reported and some possible applications of the tests are discussed. (Author/EB)
Descriptors: Biological Sciences, Botany, College Science, Instruction
Peer reviewedFreeland, P. W. – Journal of Biological Education, 1972
A laboratory demonstration is suggested for the formation of a-amylase enzyme in halved grains of barley. Data presented in the article provide some information of the pattern of a- and b-amylase activity during germination. (PS)
Descriptors: Biology, Botany, College Science, Demonstrations (Educational)
Peer reviewedFreeland, P. W. – School Science Review, 1974
Descriptors: Biology, Botany, Plant Growth, Plant Science
Peer reviewedFreeland, P. W. – School Science Review, 1975
Describes a chemical method for preparing leaf skeletons for scientific or artistic work. (LS)
Descriptors: Biology, Botany, College Science, Educational Media
