Biology 1 Chapter 1
Unlock all answers in this set
Unlock answersquestion
The goal of science
answer
To investigate and understand the natural world, to explain events, and use those explanations to make useful predictions
question
Quantitative
answer
Expressed as numbers (counts or measurements)
question
Qualitative
answer
Descriptive, involce characterics that cant be counted or measured
question
Uniformity
answer
Fundamental laws of nature operate same way at all places and times
question
Manipulated variable or independent variable
answer
Variable that is changed
question
Responding variable or dependent variable
answer
Variable that is observed and that changes
question
Redi
answer
Proposed a different hypothesis for appearance of maggots other than spontaneous generation Observed that maggots appeared on meat a few days after flies were present Considered it likely that flies laid eggs too small to see Flies produce maggots
question
Needham's test
answer
Used experiment involving animalcules (microscopic organisms discovered in pond water) Claimed spontaneous generation could occur under right conditions Sealed bottle of gravy and heated it Examined after several days, lots of organisms
question
Pasteurization
answer
Began to uncover the nature of infectuous diesease, considered kne of biologys most remarkable problem solvers
question
Field studies
answer
Observe without disturbing
question
Genetic code
answer
Living things are based off of this
question
Living things maintain a stable
answer
Internal environment
question
All life is
answer
Interconnected
question
Matter serves as ______ to build body structures
answer
Nutrients
question
Unicellular
answer
Single celled
question
Multicellular
answer
More than one cell
question
Organelles
answer
Tiny structures that perform with specific functions
question
Genes
answer
Contain instructions for single trait
question
Sexual reproduction
answer
Hereditary informstions from 2 organisms of the same species results in offspring similar to each parent but not identical
question
Asexual reproduction
answer
No combination of hereditary information-1 parent- new organism identical to parent
question
Botanist
answer
Studies plants
question
Paleontologist
answer
Studies ancient life
question
The largest level of biological study is
answer
Biosphere
question
When scientists collect data, what are they often trying to find out?
answer
Whether certain factors changed or remained the same
question
What does a graph of data make easier to recognize and understand than a table of data?
answer
Pattern
question
What are compound light microscopes?
answer
Allow light to pass through the specimen and use two lenses to form an image
question
How do chemicals make light microscopes more useful?
answer
Show structures of cell
question
Why does an organism need energy and a constant supply of materials?
answer
To grow, develop, and reproduce
question
Why do scientists assume that experimental results can be reproduced?
answer
Because nature behaves in a constant manner
