'Metaphase ii anaphase ii' diaporamas de présentation

DNA and Genetics

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Sexual Reproduction

Sexual Reproduction. Heredity - passing down of characteristics ( genes ) Alleles - different forms of the same gene. Sexual Reproduction. Why sexual reproduction? shuffles alleles; new combinations provides genetic variation in species. Meiosis. Type of cell division

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Passive transport Active transport Exocytosis Endocytosis

Membrane Transport. Passive transport Active transport Exocytosis Endocytosis. Membrane Transport. Facilitated diffusion. Channel proteins and carrier proteins. Membrane Transport. Active transport requires energy to move molecules across a membrane. Lower solute concentration.

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Hypothesis-Driven Science

Hypothesis-Driven Science. As a formal process of inquiry, the scientific method consists of a series of steps. The key element of the scientific method is hypothesis-driven science. Revise and repeat. Observation. Question. Hypothesis. Prediction. Experiment. Figure UN1-4.

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Announcements

Announcements. ? Tutoring Center SCI I, 407 M 12-3, 5:30-6:30; W 8-9, 5:30-6:30, Th 8-12, 6-7; F 8-9 ? MasteringBiology Assignment due Tuesday 5/3 ? Bring you textbooks to Lab this week. Cellular Reproduction. Cell division.

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Cellular Reproduction

Cellular Reproduction. Cell division - A process in which a cell divides into 2 or more cells. Functions of cell division: *reproduction *growth and development *repair. Cellular Reproduction. In asexual reproduction :

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Cell Division

Cell Division. Cell division is the basis for all forms of organismal reproduction. Single-celled organisms divide to reproduce. Cell division in multicellular organisms produces specialized reproductive cells, such as egg and sperm.

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