BIL 150 Study Guide - Fall 2018, Comprehensive Midterm Notes - Evolution, Protein, Dna
BIL 150
MIDTERM EXAM
STUDY GUIDE
Fall 2018
BIL 150 Important Concepts (The information you ACTUALLY need from lecture/website)
Lectures 1 and 2
Lecture 1
● World population growth is a major concern today
○ Approximate 13 years to gain another 1 billion people
○ Exponential growth
■ Large N size= faster growth (j curves)
○ Consider the carrying capacity
■ Maximum population that a given environment can support
● Forms sigmoid growth curve (S shape)
■ Earth population may begin stabilizing around 2050, 9.3 billion
● Global annual percent increase is decreasing
○ Need to consider immigration, emigration, birth and death
■ Two population curves for U.S. due to immigration
● Replacement Level Fertility
○ Each couple has 2.1-2.5 kids to exactly replace themselves
○ In U.S. native population decreasing but immigration increasing
● Population Pyramids (age/sex diagrams)
○ Show dynamics of a population’s growth
○
Lecture 2
● Biology is a natural science like physics and chemistry
○ Physics studies atomic particles
■ Forms predictive formulas
find more resources at oneclass.com
find more resources at oneclass.com
○ Chemistry applied physics
○ Biology is the most complicated
■ Applied chemistry in a cell
■ Not predictive; rules are infinite
● History of the study of biology
○ Traditional biology: study life/living organisms
○ Modern biology: recognize cell as basic unit of life
■ Describe properties of cell
■ aim= interpret the properties of living organisms within the structure of
their molecules
○ Understand emergent properties
■ Not predictive based on individual properties
● Ex: Na, Cl make safe/simple table salt
○ Build upon past discoveries
■ Mendel’s genetics, Darwin, Watson/Crick
● The Scientific Method
○ Scientific theories have 2 components
■ 1. Describe patterns observed in nature
■ 2. Identify a process responsible for the pattern
○ Must recognize and state the problem
○ The scientific method is what scientists do for a living
○ Common practices
■ Observations
● Accurate description of phenomena
● Ask questions, do literature searches
■ Postulate a question
● Design a hypothesis that is falsifiable
■ Make a testable experimental prediction
● Business analogy: investor does research, makes a prediction,
then buys stocks
○ Experimentation as stock value increases
○ Hypothesis not falsified but still a return on investment
■ Designing the experiment
● Should FALSIFY hypothesis
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
World population growth is a major concern today. Approximate 13 years to gain another 1 billion people. Large n size= faster growth (j curves) Maximum population that a given environment can support. Earth population may begin stabilizing around 2050, 9. 3 billion. Need to consider immigration, emigration, birth and death. Two population curves for u. s. due to immigration. Each couple has 2. 1-2. 5 kids to exactly replace themselves. In u. s. native population decreasing but immigration increasing. Biology is a natural science like physics and chemistry. Modern biology: recognize cell as basic unit of life. Aim= interpret the properties of living organisms within the structure of their molecules. Ex: na, cl make safe/simple table salt. The scientific method is what scientists do for a living. Business analogy: investor does research, makes a prediction, then buys stocks. Hypothesis not falsified but still a return on investment. Auxin is needed for growth, but too much is detrimental.
