Answer:
In biological system, cell is known as the basic unit of all organisms. Unicellular organism consist of one cell only but that single cell helps them to perform all the functional activity.
Levels of organization in biological systems is defined as the hierarchy of several components from smallest to complex in biological system.
Cell is one of the important part of Levels of organization in biological systems, as in multicellular organisms group of cells form tissue that create an organ and many organs together form organ system within an organism. The cell is basic unit in all organisms and without a cell, an organism can not develop.
The group of these organism formed from a small cell then form complex component of Levels of organization such as population, community, ecosystem and Biosphere (in sequential order).
Answer: False
Explanation: A catalyst increases the energy of reactant molecules which causes the chemical reaction to take place.
A catalyst <u>lowers the activation energy </u>of the reaction so that<u> a chemical reaction can take place.</u>
Answer:
The answer is: All of the options
Explanation:
These three clues (Ancient life forms preserved as fossils can tell us what organisms existed and where they were. Matching the fossils can show that land masses were once connected, Matching rock type and rock formations can show the way the continents were once attached, Glacial evidence has been found in areas where glaciers could not exits if the continents were in their current location.) can all tell us that continents and landmasses were together at one time. You can do all three to find out the answer.
The average time span between the initial hiv infection and the onset of disease symptoms in untreated people is________ years
Answer: C.11
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Answer:
D. In eukaryotes there are introns
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