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EVOLUTION Biogenesis Define biogenesis. What is spontaneous
EVOLUTION Biogenesis Define biogenesis. What is spontaneous

... a. What is meant by mass extinction and give an example? b. Has there been more than one mass extinction in earth's history? Explain. ...
Review of evolution - Fulton County Schools
Review of evolution - Fulton County Schools

...  Today, nearly all bacteria are becoming resistant to one or more antibiotics  As bacteria become resistant, physicians must switch to using different antibiotics.  Example: Staph infections and Tuberculosis are both more difficult to treat ...
Slide 1
Slide 1

... without which organisms could not maintain order, grow, and reproduce (yellow) only important for organisms like plants which receive their energy directly from the Sun (green) neither a necessary nor a sufficient condition for life (blue) not important for organisms that have adapted to survive ext ...
lecture - Fulton County Schools
lecture - Fulton County Schools

... Definiton – can cut in equal halves more than one way ...
biology-unit-1 - Churchill High School
biology-unit-1 - Churchill High School

... Transport varies between single celled organisms and multi-cellular organisms ...
Check In: WHAT ARE CELLS?
Check In: WHAT ARE CELLS?

... 3. Name two organisms that are made of only one cell. ...
chapter1
chapter1

...  We study the world of life at different levels of organization, from atoms and molecules to the biosphere  “Life” emerges at the level of cells ...
Animal Kingdom Test #1 - Parma City School District
Animal Kingdom Test #1 - Parma City School District

... 42. Which life support structures take up most of the internal space in the stomach worm Ascaris? a) intestines b) reproductive organs c) nervous system d) circulatory system 43. Which of the following best explains the lack of internal organ complexity in the stomach worm? a) they are prokaryotes a ...
Bio 104 Exam 4 Review – Animals Part I: Phylum Porifera – Phylum
Bio 104 Exam 4 Review – Animals Part I: Phylum Porifera – Phylum

... Bio 104 Exam 4 Review – Animals Part I: Phylum Porifera – Phylum Mollusca (notes pages 28-36) Animals are defined as “multicellular eukaryotes that are heterotrophic by ingestion.” They have a diplontic life cycle in which the adult is always diploid. They are classified based on their Symmetry: asy ...
Name
Name

... 14. What do you call the interaction where there is a struggle between organisms to survive as they attempt to use the same limited resource? Competition ...
Ch 12 - Mr. Neason`s Earth Science
Ch 12 - Mr. Neason`s Earth Science

... Why? Some organisms are more likely than others to be preserved as fossils. Two conditions that favor preservation of an organism as a fossil are rapid burial and the possession of hard parts. For a fossil to form, the remains of an organism must be buried quickly by sediment. Sediment protects the ...
Evolution - Burlington Township School District
Evolution - Burlington Township School District

... “On the Origin of Species” in 1859 - Evolution By Means of Natural Selection ...
Biology A
Biology A

... factors are causes of evolution and diversity of organisms. Students know the reasoning used by Charles Darwin in reaching his conclusion that natural selection is the mechanism of evolution. Students know how independent lines of evidence from geology, fossils, and comparative anatomy provide the b ...
Fossils
Fossils

... deposited over time, usually as layers at the bottom of lakes and oceans.  This sediment can include minerals, small pieces of plants and other organic matter.  The sediment is compressed over a long period of time before consolidating into solid layers of rock.  Sedimentary rocks forms layers ca ...
biology - HCC Learning Web
biology - HCC Learning Web

... Unique stinging structures (nematocytes) housed in specialized cells (cnidocytes); diploblastic; radially symmetrical; gastrovascular cavity (digestive compartment with a single opening) Dorsoventrally flattened acoelomates; gastrovascular cavity or no digestive tract Pseudocoelomates with alimentar ...
6.1.01a - UC CEAS
6.1.01a - UC CEAS

... Describe a malfunction that can occur in the system chosen. Your answer must include at least:  The name of the system and a malfunction that can occur in this system.  A description of a possible cause of the malfunction identified.  An effect this malfunction may have on any other body systems. ...
Living Things Reproduce
Living Things Reproduce

... The maintenance of a stable internal environment is called homeostasis. Even though an organism’s external environment changes, their internal environment must remain fairly constant. Example: the human body must remain at 37o Celsius. If it falls below this, we could go into hypothermia (hypo – bel ...
Exhibit 10 - Horizon Research, Inc.
Exhibit 10 - Horizon Research, Inc.

...  Organisms that have traits that best meet the challenges of their environment are most likely to survive and reproduce. Therefore, the organisms found in any particular environment are most likely to be those with traits that best meet the challenges in that environment. o A trait results in an ad ...
cms/lib/NY01001456/Centricity/Domain/535/TaxHsilent teaparty
cms/lib/NY01001456/Centricity/Domain/535/TaxHsilent teaparty

... The KINGDOM that is has organisms with eukaryotic cells, are usually multicellular, have filamentous structures that are multinucleate, lack chloroplasts, are heterotrophic, lack a digestive system, are absorptive feeders, and are classified as decomposers. ...
glossary - Catawba County Schools
glossary - Catawba County Schools

... of a genetic disease or condition, the recessive gene that causes the condition is masked in a heterozygous individual. This individual is unaffected by the condition, but can transmit the recessive allele to offspring, where it will be expressed if the other parent also donates a recessive allele f ...
Frank - Science A 2 Z
Frank - Science A 2 Z

... -- Game ends after previously set time limit and player with the most organisms wins. If both players are equal than game is a draw; or when one player loses all their organisms then opponent wins. -- Divide students into teams of two. Winner of each team plays winner of another team. Continue till ...
evolution and natural selection (SANDERS
evolution and natural selection (SANDERS

...  A fossil can be as large and complete as an entire, perfectly preserved animal, or as small and incomplete as a tiny fragment of a jawbone or leaf.  There are fossil eggs, fossil footprints, and even ...
Power Reviews PPT
Power Reviews PPT

... similar ways produce homologous structures. The same groups of embryonic cells develop in the same order and in similar patterns to produce tissues & organs. ...
Sponges and Cnidarians
Sponges and Cnidarians

... Despite their lack of complexity, sponges are clearly successful organisms, having persisted on Earth for more than half a billion years. Lacking a true digestive system, sponges depend on the intracellular digestive processes of their choanocytes for their energy intake. The limit of this type of d ...
Module A-1 (Principles of Biology)
Module A-1 (Principles of Biology)

... channels throughout the cytoplasm that functions in the transport of molecules? A) B) C) D) ...
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Precambrian body plans



Until the late 1950’s, the Precambrian era was not believed to have hosted multicellular organisms. However, with radiometric dating techniques, it has been found that fossils initially found in the Ediacara Hills in Southern Australia date back to the late Precambrian era. These fossils are body impressions of organisms shaped like disks, fronds and some with ribbon patterns that were most likely tentacles.These are the earliest multicellular organisms in Earth’s history, despite the fact that unicellularity had been around for a long time before that. The requirements for multicellularity were embedded in the genes of some of these cells, specifically choanoflagellates. These are thought to be the precursors for all multicellular organisms. They are highly related to sponges (Porifera), which are the simplest multicellular organisms.In order to understand the transition to multicellularity during the Precambrian, it is important to look at the requirements for multicellularity—both biological and environmental.
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