Exam Questions and Answers Latest Version
(Graded A+)
less common form of regulation is - Answer ✓positive feedback
positive feedback - Answer ✓end product speeds up its own production
Ice Age--> Snow reflect more solar energy temp fall
Our Species - Answer ✓homo sapiens
first word= genus second word= species
genus - Answer ✓which species belongs
species - Answer ✓name unique to a species
Life divided in 3 domains - Answer ✓bacteria
archaea
eukarya( eukaryotic)
Types of Prokaryotic Cells - Answer ✓Bacteria and Archaea
before nucleus-->lack nucleus
Domain Eukarya - Answer ✓includes all eukaryotic organisms
includes protists and 3 kingdoms
3 kingdoms - Answer ✓Plantae, Fungi, Animalia
Plant Kingdom - Answer ✓produce own food by photosynthesis
kingdom fungi - Answer ✓Consists of unicellular and multicellular organisms
that cannot make their own food (heterotrophs)
absorb nutrients
Kingdom Animalia - Answer ✓ingest food
, Protists - Answer ✓most numerous
diverse
harder to group since so different
mostly single celled organisms
classified into several groups
some are less closely related to other protists, than to plants, animals, fungi
protozoans, not a kingdom
unity in diversity of life - Answer ✓A striking unity underlies the diversity of
life; for example
DNA is the universal genetic language common to all organisms
Unity is evident in many features of cell structure
Charles Darwin - Answer ✓Evolution by "natural selection" (the weaker die
out) wrote On the Origin of Species by means of Natural Selection
Studied finches and their beak sizes in Galapagos Island
Darwin made 2 points - Answer ✓1. species showed evidence of descent with
modification--why theres unity from common ancestors
2. "Natural Selection" is mechanism behind descent with modification
***duality and unity of diversity over time
Natural selection - Answer ✓mechanism behind descent w/ modification; force
makes change ;
natural environment "selects" of beneficial traits
Darwin reasoned that - Answer ✓- organisms that are best suited to their
environment are more likely to survive and reproduce
individuals in population will advantageous traits
Science - Answer ✓"to know"
inquiry - Answer ✓search for information and explanation, often focusing on
specific questions of natural phenomena
how do we know?