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Biology 121 Exam 1 Prep Exam Questions And 100% Correct Answers.
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biology - Answer the science of how life works different levels of biology - Answer molecular mechanisms within the cell, integrated actions of many cells within an organ or body, interactions among different organisms in nature characteristics of living things - Answer complexity, a...

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  • October 17, 2024
  • 12
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • different levels of biology

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  • BIO 121
  • BIO 121

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Biology 121 Exam 1 Prep Exam
Questions And 100% Correct Answers.
biology - Answer the science of how life works



different levels of biology - Answer molecular mechanisms within the cell, integrated actions of many
cells within an organ or body, interactions among different organisms in nature



characteristics of living things - Answer complexity, able to change in response to environment, able to
reproduce, have the capacity to evolve/change



cell - Answer simplest form of life



essential features of all cells - Answer store/transmit information, plasma membrane, harness energy
from the environment



plasma membrane - Answer controls the exchange of material between the cell and environment



DNA - Answer a stable blueprint of information in a molecular form



sequence - Answer The __________ of DNA encodes a cell's information.



the central dogma - Answer DNA-transcription-RNA-translation-protein



the sun and chemical compounds - Answer What are the two sources of energy for cells?



three domains of life - Answer Bacteria, Archaea, Eukarya

, Archaea - Answer prokaryotic organisms with no nuclear membrane and distinct biochemistry
(Halophiles, Thermocidophiles)



Bacteria - Answer prokaryotic organisms with bacterial rRNA, no nuclear membrane, and specialized
membrane lipids



matter - Answer Anything that has mass and takes up space



elements - Answer Matter is made up of __________.



cannot - Answer Elements __________ be broken down by chemical reactions.



94 - Answer number of naturally occurring elements



O, C, H, N - Answer What are the most abundant elements in the human body?



the structure of its atoms - Answer What do an element's properties depend on?



atom - Answer the smallest unit of matter that still retains the properties of an element



protons - Answer positive charge, atomic number, attributes to atomic mass



neutrons - Answer neutral charge, attributes to atomic mass



electrons - Answer negative charge, play key role in chemical bond formation



atomic number - Answer number of protons



atomic mass - Answer number of protons and neutrons

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