A Practical Course in Biology by W. Belfield, M. Dearden and G. L. Watt (Auth.) PDF

Posted by

By W. Belfield, M. Dearden and G. L. Watt (Auth.)

ISBN-10: 0080161057

ISBN-13: 9780080161051

Show description

Read or Download A Practical Course in Biology PDF

Best botany books

Download e-book for kindle: A Natural History of Wine by Ian Tattersall, Rob DeSalle

A very good bottle of wine will be the spark that evokes a brainstorming consultation. Such was once the case for Ian Tattersall and Rob DeSalle, scientists who usually collaborate on ebook and museum exhibition tasks. while the dialog became to wine one night, it virtually unavoidably led the two—one a palaeoanthropologist, the opposite a molecular biologist—to start exploring the various intersections among technology and wine.

Download e-book for iPad: Sacred Seed by

Encouraged by means of physicist and environmental chief Dr. Vandana Shiva, this selection of essays draw at the knowledge of historic and sleek traditions to remind readers of the profound sacredness of the seed—how in its purity, it's the resource and renewal of all of lifestyles. for hundreds of years the planting of the seed within the earth not just nourished humanity, but in addition symbolized the secret of lifestyles and the adventure of the soul.

New PDF release: Anoxygenic Photosynthetic Bacteria

Anoxygenic Photosynthetic micro organism is a entire quantity describing all features of non-oxygen-evolving photosynthetic micro organism. The sixty two chapters are equipped into issues of: Taxonomy, body structure and ecology; Molecular constitution of pigments and cofactors; Membrane and cellphone wall constitution: Antenna constitution and serve as; response heart constitution and electron/proton pathways; Cyclic electron move; Metabolic procedures; Genetics; law of gene expression, and functions.

Additional resources for A Practical Course in Biology

Example text

Now on another pair of leaves arrange one in a flask as illustrated in Fig. 3b. Using another pair of leaves as a control arrange one of the pair in a similar flask which contains water instead of caustic soda. Leave the plant in good illumination for 5 or 6 hours and then test for starch in the four leaves in the usual way. Exercise showing that oxygen is produced during photosynthesis Method. Arrange a water plant in the apparatus as illustrated in Fig. 4. When half of the tube is full of gas, remove the tube and test for oxygen by means of a glowing splint.

Take the temperature of the water in the beaker. Remove the crucible and put 10 g of cane sugar into it. Set fire to the sugar and immediately place the crucible onto the wooden block below the beaker. When the sugar stops burning, take the temperature of the water in the beaker again and note any rise. Repeat the experiment but use 10 g of butter or some other fat in the crucible. This exercise is open to many criticisms and these should form an integral part of your, account as always. The correct way to carry out this exercise is, however, by the use of a "bomb calorimeter" or some other such instrument if available.

Note again the length after 5 minutes. 29 A PRACTICAL COURSE IN BIOLOGY NUTRITION Food tests The following tests should be tried on as large a range of food materials as possible. Tests for carbohydrates (i) All carbohydrates (Molisch's test) Add a few drops of alcoholic solution of a-naphthol (p. 162) to a little of the substance being tested in solution in a test-tube. Carefully pour cone, sulphuric acid down the side of the tube. A purple ring appears where the two liquids meet. g. glucose (grape sugar),fructose(fruit sugar) Fehling's test Make a solution or suspension of the substance being tested.

Download PDF sample

A Practical Course in Biology by W. Belfield, M. Dearden and G. L. Watt (Auth.)

by Ronald

Rated 4.85 of 5 – based on 7 votes