Biology: Life on EarthMacmillan, 1993 - Всего страниц: 1049 With the amount of information in biology growing constantly, it is a challenge for readers to develop a sense of scientific literacy and to become educated consumers. This volume helps readers manage a wealth of scientific information in a manner that is both meaningful and long-lasting. & Features significant content revisions as well as new figures and photographs in every chapter. Includes anentirely new chapter on conservation biology. Presents approximately 40% new photos. Adds new bioethics icons to call out essays that relate to this timely topic. & A comprehensive reference for anyone interested in learning more about biology. |
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... base : The four different DNA nucleotides have the same phosphate and sugar but different bases . The bases come in two types , the single - ringed pyrimidines , thymine ( abbreviated T ) and cytosine ( C ) , and the double - ringed ...
... base : The four different DNA nucleotides have the same phosphate and sugar but different bases . The bases come in two types , the single - ringed pyrimidines , thymine ( abbreviated T ) and cytosine ( C ) , and the double - ringed ...
Стр. 254
... bases , a mutation is a change in the se- quence of bases . How can the base sequence change ? As we have seen , one way for a mutation to occur is through a mistake in base pairing during replication . A few base - pairing mistakes ...
... bases , a mutation is a change in the se- quence of bases . How can the base sequence change ? As we have seen , one way for a mutation to occur is through a mistake in base pairing during replication . A few base - pairing mistakes ...
Стр. 257
... bases from each strand pair up in the middle of the helix . Only specific pairs of bases , called complementary base pairs , can link to- gether in the helix , held by hydrogen bonds : adenine with thymine and guanine with cytosine ...
... bases from each strand pair up in the middle of the helix . Only specific pairs of bases , called complementary base pairs , can link to- gether in the helix , held by hydrogen bonds : adenine with thymine and guanine with cytosine ...
Содержание
Detailed Contents | 1 |
An Introduction to Life on Earth | 2 |
THE UNITS OF LIFE I CELL | 5 |
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Часто встречающиеся слова и выражения
action potential active allele amino acids animals antibodies atoms axons bacteria bind blood cells body bonds bone brain called capillaries carbon cause cell division cell wall cellular Chapter chemical chloroplasts chromosomes color complex concentration contains cycle cytoplasm diffusion digestive diploid disease electron embryo endergonic reaction energy environment enzymes eukaryotic eukaryotic cells evolution evolutionary evolved female fertilization Figure flowers fluid function fungi gametes gametophyte genes genetic glands glucose haploid hormones human hydrogen immune infected intestine ions layer light-dependent reactions male meiosis metabolism microtubules mitochondria mitosis molecules multicellular muscle mutation nerve nervous system neurons nucleotides nucleus nutrients occur offspring organisms oxygen pair phenotype photosynthesis plants plasma membrane pollen polymerase population produce prokaryotic protein protists reactions receptor release reproduction ribosomes root seed sequence sexual speciation species sperm stem strand structure subunits sugar synthesize tion tissue transport tube types usually vascular vertebrates xylem
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Ecology: From Individuals to Ecosystems Michael Begon,Colin R. Townsend,John L. Harper Недоступно для просмотра - 2009 |