al.‚ 2011). PHA accumulation ability has been reported for many microorganisms including Gram-negative and Gram-positive species (i.e. autotrophic‚ heterotrophic and phototrophic microorganisms‚ aerobes and anaerobes) as well as for a number of archaea strains. Homo-polymer PHB‚ the best characterized member of wide family of polyhydroxyalkanoates‚ is not only present in microorganisms as storage material but is also very ubiquitous in nature in various roles (Poirier et al.‚ 1995). In recent years
Premium Polymer Carbon Monomer
Biology Final Review Chapter 1 Biology unifies much of natural science * Living systems: most complex chemical systems on Earth * Constrained by properties of chemistry and physics * Science is becoming more interdisciplinary (combining multiple fields) 7 characteristics of all living organisms 1. Composed of cells 2. Complex and ordered 3. Respond to their environment 4. Can grow‚ develop‚ and reproduce 5. Obtain and use energy 6. Maintain internal balance
Premium Protein Adenosine triphosphate Cell
Observing Cells Objectives: After completing this exercise and reading the corresponding material in your text‚ you should be able to 1. Prepare a wet mount slide 2. Identify structures described in this lab on slides 3. Cite examples of the wide diversity of cell types 4. Relate differences in structure among cells to functional differences Introduction Structurally and functionally‚ all living things share one common feature: all living organisms are composed of cells
Premium Eukaryote Cell Organism
bacterium listed in Section 1.3‚ page 11 is a specific example of a unicellular organism. 3. Identify the 3 domains of living things. Which domain contains multicellular organisms? (2 pt) The three domains listed in the text on page 7 are Bacteria‚ Archaea and Eukarya. Multicellular organisms comprise the Eukarya domain 4. List the four kingdoms of Eukarya. As illustrated on Figure 1.6 on page 7 of the text‚ the four kingdoms of Eukarya are Protists‚ Plants‚ Fungi and Animals. They are also described
Free Atom Chemical bond Covalent bond
Themes in the Study of Life Campbell Biology 9th ed. Chapter 1 What is Biology? • Biology is the scientific study of life • Biologists ask questions such as – – – How do multicelled organisms develop? How does the human mind work? How do living things interact in communities? • Life defies a simple‚ one-sentence definition • Life is recognized by what living things do Some Properties of Life • Order • Evolutionary adaptation • Response to environment • Reproduction • Growth and development
Premium DNA Eukaryote Scientific method
History of evolutionary thoughtFurther information: History of evolutionary thought The proposal that one type of animal could descend from an animal of another type goes back to some of the first pre-Socratic Greek philosophers‚ such as Anaximander and Empedocles.[11][12] Such proposals survived into Roman times. The poet and philosopher Lucretius followed Empedocles in his masterwork De Rerum Natura.[13][14] In contrast to these materialistic views‚ Aristotle understood all natural things‚ not
Premium Evolution DNA
Final Biochemistry Exam Select the best answer for the following questions. 1. Which group of single-celled microorganisms has many members found growing in extreme environments? A) Bacteria B) Archaea C) Eukaryotes D) Heterotrophs E) None of the above 2. The three-dimensional structure of macromolecules is formed and maintained primarily through noncovalent interactions. Which one of the following is not considered a noncovalent interaction? A)
Premium Amino acid
SCI 2020 Study Guide for Exam 1 on September 14‚ 2012 Ch. 14 How did reading books by Lyell and Malthus influence Darwin’s development of the theory of evolution? - From Lyell‚ Darwin saw that species gradually changed over time o Example: the Finches - From Malthus‚ Darwin perceived the idea of natural selection o Survival of the fittest o Those species that possessed physical‚ behavioral or other attributes survived over those who didn’t
Premium Bacteria Eukaryote Evolution
Theories: unifying explanations of the natural world Proximate questions: deal with mechanisms. Don’t always need evolutionary explanations Ultimate questions: concerned with evolutionary origins and functions Induction: inference of general law from observations Hypothesis: possible explanation for observation Carolus Linnaeus: binomial nomenclature Nomenclature: system of rules for naming things Taxonomy: naming and classifying organisms Systematics: theory and practice of classifying organisms
Premium Evolution Bacteria Species
Midterm 1 stuff (1‚ 25‚ 26‚ 27‚ 28) 2) What characterizes a prokaryotic cell? a. the lack of ribosomes b. the lack of a membrane-enclosed nucleus c. the presence of a nucleus with no DNA d. the presence of mitochondria e. having a cell wall without a cell membrane 3) Which of the following does NOT comprise a logical hierarchy of organization? a. family‚ order‚ class‚ phylum‚ kingdom b. molecules‚ cells‚ tissues‚ organ systems‚ populations c. organisms‚ populations‚ communities‚ biomes
Premium Bacteria Eukaryote DNA