Bio 106 WSU Final Exam 3 Questions
and Already Passed Answers 2025 Set.
Positive Feedback Loop - Answer Moves a system away from its equilibrium state and make it
more unstable
Negative Feedback Loop - Answer A feedback loop that causes a system to change in the
opposite direction from which it is moving
Endocrine System - Answer The system responsible for hormones
Steps in a simple pathway - Answer Reception
Transduction
Response
Steps in a cascade pathway - Answer A stimulus (first messenger) activity on a receptor that is
transduced to the cell interior through a second messenger.
What is a tropic hormone? - Answer A hormone that has an endocrine gland as its target = a
hormone that controls the release of other hormones
Antagonist pair of hormones maintaining blood glucose levels are named... - Answer Insulin
and Glucagon
Insulin is - Answer The hormone that lowers blood sugar by having it stored as glycogen in the
liver and increasing cellular uptake.
Glucagon is - Answer A hormone that increases blood sugar levels
Antagonistic hormones are - Answer Two hormones that perform opposite function to
maintain homeostasis
What provided opportunity for land colonization by animals? - Answer Climate was warm and
, What animal phylum was the first to colonize the land? - Answer Sponges
What are the 5 specialized functions of arthropod "modified" appendages? - Answer Mating,
feeding, sensing, waking, and swimming
What are the functions of rigid arthropod exoskeleton? - Answer Support, protection, and
contributes to efficient locomotion
Specialized gas exchange found in aquatic species - Answer Gills: They increase surface area
for gas exchange, convoluted outgrowths containing blood vessels covered by a thin epithelial
layer.
Specialized gas exchange organs in insects - Answer Tracheal tubes. Help to increase the
surface area and volume area ratio.
Evidence that plants played an important role in insect diversification - Answer -Huge variety
of a group of insects all at once and this seems to happen around the time seed plants begin to
diversify in the fossil record
-The first occurrence of flowering plants/angiosperms you see some diversification there as well
First animals present 710 mya ... - Answer Fossil Steroids
Animals 560 mya - Answer Were represented by a single community
Name of the fossils from 560 mya - Answer Ediacaran
Two most ancient animal phyla - Answer Sponges and Comb Jellies
What phylum are sponges in? - Answer Porifera
How do Porifera feed? - Answer Tiny pores in their outer walls in which water is drawn into
filter food from the water
and Already Passed Answers 2025 Set.
Positive Feedback Loop - Answer Moves a system away from its equilibrium state and make it
more unstable
Negative Feedback Loop - Answer A feedback loop that causes a system to change in the
opposite direction from which it is moving
Endocrine System - Answer The system responsible for hormones
Steps in a simple pathway - Answer Reception
Transduction
Response
Steps in a cascade pathway - Answer A stimulus (first messenger) activity on a receptor that is
transduced to the cell interior through a second messenger.
What is a tropic hormone? - Answer A hormone that has an endocrine gland as its target = a
hormone that controls the release of other hormones
Antagonist pair of hormones maintaining blood glucose levels are named... - Answer Insulin
and Glucagon
Insulin is - Answer The hormone that lowers blood sugar by having it stored as glycogen in the
liver and increasing cellular uptake.
Glucagon is - Answer A hormone that increases blood sugar levels
Antagonistic hormones are - Answer Two hormones that perform opposite function to
maintain homeostasis
What provided opportunity for land colonization by animals? - Answer Climate was warm and
, What animal phylum was the first to colonize the land? - Answer Sponges
What are the 5 specialized functions of arthropod "modified" appendages? - Answer Mating,
feeding, sensing, waking, and swimming
What are the functions of rigid arthropod exoskeleton? - Answer Support, protection, and
contributes to efficient locomotion
Specialized gas exchange found in aquatic species - Answer Gills: They increase surface area
for gas exchange, convoluted outgrowths containing blood vessels covered by a thin epithelial
layer.
Specialized gas exchange organs in insects - Answer Tracheal tubes. Help to increase the
surface area and volume area ratio.
Evidence that plants played an important role in insect diversification - Answer -Huge variety
of a group of insects all at once and this seems to happen around the time seed plants begin to
diversify in the fossil record
-The first occurrence of flowering plants/angiosperms you see some diversification there as well
First animals present 710 mya ... - Answer Fossil Steroids
Animals 560 mya - Answer Were represented by a single community
Name of the fossils from 560 mya - Answer Ediacaran
Two most ancient animal phyla - Answer Sponges and Comb Jellies
What phylum are sponges in? - Answer Porifera
How do Porifera feed? - Answer Tiny pores in their outer walls in which water is drawn into
filter food from the water
