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Biology 121 Exam 1 Study Guide Questions and Correct Answers.
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Biology 121 Exam 1 Study GuideQuestions and Correct Answers
Define Biology - correct answers:The study of life.
Life is characterized by what properties? - correct answers:Emergent properties aka reflect hierarchy of
structural organization
What is the lowest level of biological organization - correct answers:Atoms
Know order of structural levels from atom to ecosystem - correct answers:Atoms-Molecules-Organelles-
Cells-Tissue-Organs-Organ Systems-Organisms-Populations-Community-Ecosystem
Know the basic definition of each (e.g. what is an ecosystem?) - correct answers:An Ecosystem is where
living interacts with the non-living in an environment
What is the function shared by all living organisms? - correct answers:1. Uptake and processing of
nutrients. 2. Excretion of wastes. 3. Response to environmental stimuli. 4. Reproduction among others
Know the contribution of Hooke and Leewenhoek - correct answers:Hooke was the first to observe and
name cells. Leewenhoek discovered singled celled organisms
Be able to identify 3 major points of cell theory - correct answers:All living things consists of cells, all cells
come from new cells, new cells produced by division of other cells
Know basic differences between Prokaryotic and Eukaryotic cells. - correct answers:Prokaryotic have no
internal membranes, organelles, or nucleus, but eukaryotic does.
Be familiar with DNA molecule and genome - correct answers:DNA molecule is a double helix and are
biological instructions; a genome are the entire library of genetic information
, What are the sources of energy for an ecosystem? - correct answers:Life
Be able to recognize a positive feedback and a negative feedback system - correct answers:Negative
Feedback- slows/stops processes (body temp)
Positive Feedback- speeds up processes (wound healing)
Know definitions of evolution and taxonomy. - correct answers:Evolution is the key to biological diversity.
Taxonomy names and classifies species into hierarchical order
3 Domains -- 4 Kingdoms (3 Multi cellular) - correct answers:3 Domains- bacteria, arachae, & eukarya.
4 Kingdoms- animalia, plantae fungi (Multicellular) & Protista
What was the major contribution of Darwin? - correct answers:His origin of species
What did it help explain? - correct answers:Natural selection and evolution
Know basic information about scientific method -- stages/steps - correct answers:Form a hypothesis, Test
the hypothesis, Analyze data, Form conclusion, Communicate whether the hypothesis is falsifiable or not
What is the difference between science and technology? - correct answers:Science is knowing,
technology is doing
Know examples of science and technology - correct answers:Knowing DNA structure allowed for gene
therapy; creating DNA technology revolutionized the pharmaceutical industry
What is the Origin of Species? - correct answers:Scientific literature written in the 1800s
Who wrote it? - correct answers:Darwin
What are the two most important points of this publications? - correct answers:Natural Selection and
Evolution
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