4 The dominant form of life on Earth
... The total volume of the Earth’s oceans is 1.4 × 1018 m3 . The total number of bacteria is therefore 1012 bacteria m−3 × 1.4 × 1018 m3 = 1.4 × 1030 bacteria. What is the mass of a single bacterium? A typical bacterium is 1µm (10−6 m) in size or 1µm3 (10−18 m3 ) in volume. Being made mostly of water, ...
... The total volume of the Earth’s oceans is 1.4 × 1018 m3 . The total number of bacteria is therefore 1012 bacteria m−3 × 1.4 × 1018 m3 = 1.4 × 1030 bacteria. What is the mass of a single bacterium? A typical bacterium is 1µm (10−6 m) in size or 1µm3 (10−18 m3 ) in volume. Being made mostly of water, ...
Leaving Cert Biology Sample Answers - Ecology Definitions
... Feature that helps organism survive in its environment Adverse external environment Surroundings that are harmful to an organism ...
... Feature that helps organism survive in its environment Adverse external environment Surroundings that are harmful to an organism ...
What is a microbe? - Oppenheimer Biotechnology, Inc.
... It is difficult to describe a simple yet complex form of life like the microbes. Because of their size (1 micron) they are so small that a powerful microscope is required to see them. It took the development of the microscope before man learned that microbes were the chemical agents of decay, ...
... It is difficult to describe a simple yet complex form of life like the microbes. Because of their size (1 micron) they are so small that a powerful microscope is required to see them. It took the development of the microscope before man learned that microbes were the chemical agents of decay, ...
Ecology
... is lost to heat from one level to the next. Only 10% of your food is actually incorporated into making you! ...
... is lost to heat from one level to the next. Only 10% of your food is actually incorporated into making you! ...
Is treated waste a treat for wetlands (PDF File 95.2 KB)
... ‘In Australia, climate change and an unprecedented demand for water have increased the use of sewage for agricultural irrigation’ says Associate Professor Burgin. ‘Increasingly, this water is stored in existing wetlands. Research on effluent released to flowing waters (rivers and creeks) has demonst ...
... ‘In Australia, climate change and an unprecedented demand for water have increased the use of sewage for agricultural irrigation’ says Associate Professor Burgin. ‘Increasingly, this water is stored in existing wetlands. Research on effluent released to flowing waters (rivers and creeks) has demonst ...
28 Ecosystems - answers
... water pressure, light, salinity. (any two) (b) The abiotic factors which might affect a plant growing on mountains might be; temperature, wind speed, drainage of water, light intensity. (any two) 6 The biotic factors that might affect an antelope living in the Serengeti could be: predation by carniv ...
... water pressure, light, salinity. (any two) (b) The abiotic factors which might affect a plant growing on mountains might be; temperature, wind speed, drainage of water, light intensity. (any two) 6 The biotic factors that might affect an antelope living in the Serengeti could be: predation by carniv ...
Toxicogenomics
... Advantages of Measuring Gene Expression in Toxicology • The fact that groups of chemical with a common toxicological mechanism produce a characteristic pattern (“fingerprint”) of gene expression means it may be possible to discern the toxic potential of an agent quickly and cheaply. • A way to cut ...
... Advantages of Measuring Gene Expression in Toxicology • The fact that groups of chemical with a common toxicological mechanism produce a characteristic pattern (“fingerprint”) of gene expression means it may be possible to discern the toxic potential of an agent quickly and cheaply. • A way to cut ...
Environmental Impact of Some Medications
... Many medical procedures involve the use of radionuclides –unstable isotopes of certain elements that undergo spontaneous radioactive decay. Some of these isotopes are administered to patients in water-soluble salts or radiopharmaceutical drugs, while others are used in medical equipment as sourc ...
... Many medical procedures involve the use of radionuclides –unstable isotopes of certain elements that undergo spontaneous radioactive decay. Some of these isotopes are administered to patients in water-soluble salts or radiopharmaceutical drugs, while others are used in medical equipment as sourc ...
File
... Interacting populations that inhabit a common environment and are interdependent. (All biotic components in an ecosystem) ...
... Interacting populations that inhabit a common environment and are interdependent. (All biotic components in an ecosystem) ...
Prokaryotic Organisms
... and vagina (during child-bearing years) (a) responsible for the vagina’s acidic environment (b) other members are sometimes used in food production iv) Enterococcus sp. (Gram positive cocci) are located in the intestinal tract of animals and humans (a) they rarely produce infections here but do actu ...
... and vagina (during child-bearing years) (a) responsible for the vagina’s acidic environment (b) other members are sometimes used in food production iv) Enterococcus sp. (Gram positive cocci) are located in the intestinal tract of animals and humans (a) they rarely produce infections here but do actu ...
Trophic Levels Food Chains , Webs and Pyramids
... 3. Nitrogen cycle (Atmospheric nitrogen (N2) makes up 78-80% of air- Organisms can’t use it in that form) a. Lightning and bacteria convert nitrogen into usable forms. b. Only in certain bacteria (and industrial technologies) can fix nitrogen nitrogen fixation. ...
... 3. Nitrogen cycle (Atmospheric nitrogen (N2) makes up 78-80% of air- Organisms can’t use it in that form) a. Lightning and bacteria convert nitrogen into usable forms. b. Only in certain bacteria (and industrial technologies) can fix nitrogen nitrogen fixation. ...
Chapter 3
... same area. Community = groups of different populations that live together in a defined area. ...
... same area. Community = groups of different populations that live together in a defined area. ...
Lecture 5. Biology A. Taxonomy and Diversity The largest
... Prokaryotes may grow as filaments (cyanobacteria) or colonies reaching millimeters to centimeters in length. [T] cyanobacteria [T] bacterial colonies 2) Eurkaryotes There is tremendous diversity in the Eukaryota, as the domain includes everything from algae to sturgeon. [T] spectrum of eukaryotes (a ...
... Prokaryotes may grow as filaments (cyanobacteria) or colonies reaching millimeters to centimeters in length. [T] cyanobacteria [T] bacterial colonies 2) Eurkaryotes There is tremendous diversity in the Eukaryota, as the domain includes everything from algae to sturgeon. [T] spectrum of eukaryotes (a ...
View Abstract PDF
... Department of Chemistry, New York University, New York, NY 10012 Molecular transport of toxic molecules such as antiseptics and antibiotics by efflux pumps is one of the primary ...
... Department of Chemistry, New York University, New York, NY 10012 Molecular transport of toxic molecules such as antiseptics and antibiotics by efflux pumps is one of the primary ...
Introductory Microbiology
... – Introduced aseptic techniques • Aimed at reducing microbes in a medial setting and preventing wound infections ...
... – Introduced aseptic techniques • Aimed at reducing microbes in a medial setting and preventing wound infections ...
3.1 Diversity of Organisms
... Free from all organisms [Bacteria] capable of producing own food [organism] not capable of producing their own food i.e organism obtains food from other organisms Using light to make food or obtain energy Make food or obtain energy using a chemical reaction ...
... Free from all organisms [Bacteria] capable of producing own food [organism] not capable of producing their own food i.e organism obtains food from other organisms Using light to make food or obtain energy Make food or obtain energy using a chemical reaction ...
Ecology = scientific study of interactions among organisms and
... environmental issues so that as new technologies are developed we can ask critical questions about their impact on environmental systems. We need to support research that is aimed at studying the effects of these technologies on human health as well as other species. If no direct evidence can be pro ...
... environmental issues so that as new technologies are developed we can ask critical questions about their impact on environmental systems. We need to support research that is aimed at studying the effects of these technologies on human health as well as other species. If no direct evidence can be pro ...
SThaw @aegilopoides Classification Kingdom The largest group of
... A group of two or more populations of different species that live in the same area at the same time. Competition The contest between organisms for resources such as food and shelter. Ecosystem The interaction of a community (of living organisms) with the non-living parts of their environment. Extrem ...
... A group of two or more populations of different species that live in the same area at the same time. Competition The contest between organisms for resources such as food and shelter. Ecosystem The interaction of a community (of living organisms) with the non-living parts of their environment. Extrem ...
Triclocarban
Triclocarban is an antibacterial agent common in personal care products like soaps and lotions as well as in the medical field, for which it was originally developed. Studies on its antibacterial qualities and mechanisms are growing. Research suggests that it is similar in its mechanism to triclosan and is effective in fighting infections by targeting the growth of bacteria such as Staphylococcus aureus. Additional research seeks to understand its potential for causing antibacterial resistance and its effects on organismal and environmental health.