Chapter 1: Biology and the tree of life

Question 1

Biology

Answer 1

an explanation for the hows and whys of the diversity of life in all dimensions

Question 2

3 dimensions

Answer 2

Time dimension
-Proximate: immediate cause of an effect
-Ultimate: Higher level reason for an effect
Biological
-molecules and proteins, through genes, to organisms, & communities
Spatial
-highly local to global

Question 3

Conditions for something being alive?

Answer 3

• Energy: acquire & use
• Cells: membrane bound units that regulate structure and function
• information: ability to pass on info the the next generation
• Replication: sexual or Asexual
• Evolution: organisms are products of evolution and populations continuously evolve

Question 4

Types of Diversity

Answer 4

• Genetic
• Taxonomic: # of types, & distribution of species within a taxa
• Ecosystem

Question 5

Ecology

Answer 5

hows and whys organisms interact with each other and their physical enviroment

Question 6

Evolution

Answer 6

a change in allele frequency in a population over time

Question 7

Cell theory

Answer 7

all organisms are made up of cells and all cells come form preexisting cells

Question 8

cells

Answer 8

highly organized compartment that is bounded by a thin flexible structure called a plasma membrane

Question 9

Theory of evolution by natural selection

Answer 9

• species are related by a common ancestry

- characteristics can be modified from generation to generation

Question 10

The two conditions for natural selection

Answer 10

• individuals within a population vary in characteristics that are heritable
• certain versions of these heritable traits help individuals survive better

Question 11

Fitness

Answer 11

the ability of an individual to produce viable offspring

Question 12

Adaptation

Answer 12

a trait that increases the fitness of an individual in a particular environment