Study sets, textbooks, questions
Upgrade to remove ads
Biology test 1
Terms in this set (43)
What are cells?
smallest functional unit of life
Sexual reproduction- offspring
Asexual- yeast, spores
Based on a universal genetic code
Inheriting traits, DNA blueprint
Define growth and development
Growth is a physical change
Development is maturing to be able to have offspring. Adulthood
Obtain and use materials and energy
Metabolism- the combination of chemical reactions through which an organism builds up or breaks down materials as it carries out it's life processes
Respond to their environment
External vs. internal stimuli
Maintain a stable internal environment
- internal feedback mechanisms
- blood sugar
Change over time
- individual organisms do not evolve
Do viruses have cells?
No, they are non-cellular
Do viruses respond to change?
Yes. They are able to adapt to their environment
Do viruses reproduce?
Yes. The viruses attaches itself to a host cell as it injects more viruses into the host cell.
Do viruses have DNA or RNA?
Yes. DNA is the code for life. DNA controls evolution of the cell and organism
Do viruses use energy?
No. They don't need food since they aren't cells and have no activity within it. Only the host cell needs energy for reproduction
Do viruses grow and develop?
No. A virus has nothing inside it's protein coat.
Do viruses evolve?
Yes. Like living things, viruses evolve through time
What kind of organisms are affected by viruses?
Animals, plants, bacteria and humans
Name some illnesses caused by viruses
AIDS, Ebola, west Nile, Flu, Lymes
Three essential requirements for life
• major bio-organic elements
• UV radiation protection
What are bio-organic elements?
Building blocks of cells
S.P.O.N.C.H. are the constituents of ...
Biomolecules make up
Cells carry out...
Thousands of chemical reactions which take place in solution which is in water
Forms of energy
Chemical energy (food)
Sunlight is used for
chemical energy is used for
Cell respiration and fermentation
Photosynthesis, cell respiration and fermentation are used to produce
Cellular energy in the form of ATP adenosine triphosphate
UV radiation protection includes...
• absorbent layers
• repair mechanism
Examples of absorbent layers
Scientific Method begins by ...
Asking a question
Name the steps of the scientific method in order.
• ask a question
• background research
• form a hypothesis
• collect data analyze results
• draw conclusion
• determine if hypothesis is true or false
• report results
• ask another question!
During the scientific method, people shouldn't see...
A scientific explanation for a set of observations. Statement question , not a guess. Can be evaluated by experimentation
Draw a conclusion by...
Reasonable evaluation based upon the data
What is data
Statistics and observational analysis
One variable changed at a time and hypothesis is tested
Peer reviewed journals
Sources used to gather background research or publish your own results in
Examples: Science, Nature
The result of an experiment must be reproducible. It is usually best to repeat an experiment three times to ensure that the results being obtained are correct
A variable that you believe might influence the outcome. The independent variable influences the dependent variable
The variable you believe might be influenced or modified
A factor which is controlled by the experiment to cancel out or neutralize any effect they might otherwise be on the dependent variable. Using a large subject group helps to minimize effects of variables that you can't control
A group that is not subject to the independent variable. Used for comparison data
An inactive substance used as a control in an experiment or test to determine the effectiveness of a medical drug
an experiment in where neither the subject or experimenter knows whether the subject is part of the control or experimental group (whether the subject is being subjected to the independent variable). It is used to guard against both experimenter bias and "the placebo effect".
Sets with similar terms
bio test questions
Bio Honors Study Flash Cards
chapter 1: biological principles
Other sets by this creator
Nervous System test prep
Innate and specific WBC
bio mitosis and meiosis
Other Quizlet sets
SDSU Bio 203 Exam 1
Gwen - Adult Development Part 2
Microbiology Final Exam
Spanish 3 Unidad Seís Lección Uno