emergency~~~help me ~~~~~~~~~~~~~~?
lily asked:
About biology question….?
1) The quality of the water in waterways located near communities is monitored by government agencies.
a) Describe two things that could be measured the would help evaluate the water quality of a river located near a community.
b) Describe one reason it is important to monitor the water quality of local waterways.
About biology question….?
1) The quality of the water in waterways located near communities is monitored by government agencies.
a) Describe two things that could be measured the would help evaluate the water quality of a river located near a community.
b) Describe one reason it is important to monitor the water quality of local waterways.
2) There are both similaritics and differences between prokaryotic and eukaryotic clees.
a) Describe one difference between prokaryotic and eukaryotic cells.
b) Desribe one similarity between prokaryotic and eukaryotic cells.
1a A screen can be done to find out what pollution is in the water and another for levels at different times of year.
b It is important to monitor the quality of water as it could affect the health of thw wildlife and local people using it for activities.
2a prokaryotic are cells that reproduce and eukaryotic are fully formed, one cell organisms.
b They both need light to function.
There is no single or simple measure of water quality. Surface waters naturally contain a wide variety of substances, and human activities inevitably add to this mixture. Scientists have therefore developed specialized approaches to measuring quality. A single water sample may be tested for a few substances, or for a few hundred, depending on the issues at hand. Samples may be collected by traditional methods, i.e., by filling a container of water in the field then returning it to the laboratory for analysis. Or, data may be collected automatically by installing electronic devices directly into watercourses. These specialized sensors can transmit information via satellite telemetry to office computers within a few minutes of collection. Scientists also study aquatic organisms and the bottom sediments of lakes and rivers to indicate the overall quality of freshwater systems.
Water quality measurements fall into three broad categories:
physical characteristics such as temperature, colour, suspended solids and turbidity;
chemical characteristics such as nutrients, minerals, metals, oxygen, and organic compounds;
biological characteristics such as the types and quantities of aquatic plants, animals, algae, bacteria and protozoan parasites.
Scientists use water quality data collected during intensive monitoring and research programs to assess the effectiveness of water quality protection strategies
Cells in our world come in two basic types, prokaryotic and eukaryotic. “Karyose” comes from a Greek word which means “kernel,” as in a kernel of grain. In biology, we use this word root to refer to the nucleus of a cell. “Pro” means “before,” and “eu” means “true,” or “good.” So “Prokaryotic” means “before a nucleus,” and “eukaryotic” means “possessing a true nucleus.” This is a big hint about one of the differences between these two cell types. Prokaryotic cells have no nuclei, while eukaryotic cells do have true nuclei. This is far from the only difference between these two cell types, however.
Despite their apparent differences, these two cell types have a lot in common. They perform most of the same kinds of functions, and in the same ways. Both are enclosed by plasma membranes, filled with cytoplasm, and loaded with small structures called ribosomes. Both have DNA which carries the archived instructions for operating the cell. And the similarities go far beyond the visible–physiologically they are very similar in many ways. For example, the DNA in the two cell types is precisely the same kind of DNA, and the genetic code for a prokaryotic cell is exactly the same genetic code used in eukaryotic cells.