sciencie stuff dion brinson. life sciences explain that cells are the basic unit of structures and...
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Sciencie stuff
Dion Brinson
Life Sciences
Explain that cells are the basic unit of structures and function of living organisms, that once life originated all cells come from pre-existing cells, and that there are a variety of cell types.
Basic units of life We have evolved from
single-celled organisms Different cells have
different jobs.
The discovery of fossils of the same organisms exposed along the coasts of both Africa and South America supports the hypothesis that both landmasses were once joined together (first speculated on because of the remarkable fit between the two coastlines) and have since separated Radiation is the transfer of energy by electromagnetic waves, in this case sunlight. The sunlight shining on the student’s face will transfer thermal energy to her face. Conduction is the transfer of thermal energy through direct contact. The student’s feet are in direct contact with the warm sand. The warm sand transfers thermal energy to the student’s feet.
Life Science Eukaryotic Cell
Has cell membrane Allows material to enter and
leave the cell. Nucleus-contains DNA Mitochondria-energy is stored
and used, contains DNA ER- transportation system within
the cell Ribosomes- protein is made Vacuoles- closets, store stuff
Life Science Cell Wall
Function is protection, support, structure.
Chloroplasts Contain chlorophyll Make the plant
green Function is to
produce food
Life Cells RBC
Form is round Function is fit through our
circulatory system Hair
Form is wide on bottom and thin at top
Function is for root stability hair formation
Sperm Form head and tail Function is to swim by using
the flagellum
Life Sciences
Explain the characteristics of life as indicated by cellular processes and describe the process of cell division and development.Cells must divide to reproduce.Cells produce an exact copy of the cells they
replace.Cells go through phases of change.
Prophase, metaphase, anaphase, telephase
Life Science meiosis
Life Sciences
Explain the genetic mechanisms and molecular basis of inheritance. Form and function of Deoxyribose Nucleic Acid (DNA) Genes- traits Alleles- one part of two that make up a gene Mutations- is the only source of new genetic material Sex-linked traits- traits carried by either a male or female
Life Sciences
Explain the genetic mechanisms and molecular basis of inheritance.Genotype
What you are, in your genes Bb- heterozygous dominant brown-eyes
Phenotype What you look like, photograph
Brown-eyes
Life Sciences Explain the flow of
energy and the cycling of matter through biological and ecological systems (cellular, organismal, and ecological). Starts with the Sun to
primary producers to primary consumers to secondary and tertiary consumers
Life Sciences
Explain how evolutionary relationships contribute to an understanding or the unity and diversity of life.
Taxonomy Kingdom (5) Phyllum Class Order Family Genus Species
Sub-species Homo sapien sapien Canis lupus bailieyi Felis domesticus
Life Sciences
Explain the structure and function of ecosystems and relate how ecosystems change over time.Biotic- living components of an ecosystemAbiotic-nonliving components of an
ecosystem
Life Sciences
Describe how human activities can impact the status of natural systems. GMOs- Genetically Modified Organisms
Scientist change the organism DNA to improve its ability to live
BT- Bacilis thuringensis has been added to cotton plants to produce a poison to protect it from bugs.
Killing bugs, cotton is poisonous, cotton grows faster and bigger, grow more cotton, need more land, eliminates ecosystems, food chain is disrupted, poison goes through food chain.
Life Sciences
Describe a foundation of biological evolution as the change in gene frequency of a population over time. Natural Selection- Charles Darwin “Origin of Species”-
survival of fittest Offspring are more likely to survive due to
Genetic, traits, genes, alleles, mutations Ability to reproduce Ability to move Ability to attract a mate Ability to support family Ability to get food Genetics that allow you to grow
Life Sciences
Explain how natural selection and other evolutionary mechanisms account for the unity and diversity of past and present life forms.Natural selection determines the survival of
the fittest Separates organisms to create diversity in our
world.
Life Sciences
Summarize the historical development of scientific theories and ideas, and describe emerging ideas.
Atomic Number Top number 79 The number of protons Symbol Latin, Name, Place, People. Atomic Weight Big number at bottom. Average of all
the isotopes. Atomic Mass Isotopes Same element, different number of
neutrons