BIO 106 WSU EXAM 3 EXAM
QUESTIONS & ANSWERS PASSED
100%
Positive Feedback Loop - Correct Answer ✔✔ Moves a system away from its
equilibrium state and make it more unstable
Negative Feedback Loop - Correct Answer ✔✔ A feedback loop that causes a system
to change in the opposite direction from which it is moving
Endocrine System - Correct Answer ✔✔ The system responsible for hormones
Steps in a simple pathway - Correct Answer ✔✔ Reception
Transduction
Response
Steps in a cascade pathway - Correct 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? - Correct 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... - Correct
Answer ✔✔ Insulin and Glucagon
Insulin is - Correct Answer ✔✔ The hormone that lowers blood sugar by having it stored
as glycogen in the liver and increasing cellular uptake.
Glucagon is - Correct Answer ✔✔ A hormone that increases blood sugar levels
Antagonistic hormones are - Correct Answer ✔✔ Two hormones that perform opposite
function to maintain homeostasis
What provided opportunity for land colonization by animals? - Correct Answer ✔✔
Climate was warm and uniform, land was barren rock
What were the challenges of colinizing land? - Correct Answer ✔✔ There was less
water, plants dried out, and there was no support against gravity
What animal phylum was the first to colonize the land? - Correct Answer ✔✔ Sponges
, What are the 5 specialized functions of arthropod "modified" appendages? - Correct
Answer ✔✔ Mating, feeding, sensing, waking, and swimming
What are the functions of rigid arthropod exoskeleton? - Correct Answer ✔✔ Support,
protection, and contributes to efficient locomotion
Specialized gas exchange found in aquatic species - Correct 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 - Correct Answer ✔✔ Tracheal tubes. Help
to increase the surface area and volume area ratio.
Evidence that plants played an important role in insect diversification - Correct 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 ... - Correct Answer ✔✔ Fossil Steroids
Animals 560 mya - Correct Answer ✔✔ Were represented by a single community
Name of the fossils from 560 mya - Correct Answer ✔✔ Ediacaran
Two most ancient animal phyla - Correct Answer ✔✔ Sponges and Comb Jellies
What phylum are sponges in? - Correct Answer ✔✔ Porifera
How do Porifera feed? - Correct Answer ✔✔ Tiny pores in their outer walls in which
water is drawn into filter food from the water
Do porifera have tissues? - Correct Answer ✔✔ No
What is the function of choanocytes? - Correct Answer ✔✔ generate flow of water
What is the function of amoebocytes? - Correct Answer ✔✔ travel around distributing
food and oxygen to the cells of the epidermis
gastrovascular cavity - Correct Answer ✔✔ primary organ of digestion and circulation
Simple nervous system - Correct Answer ✔✔ includes sensory information, an
integrating center, and effectors.
QUESTIONS & ANSWERS PASSED
100%
Positive Feedback Loop - Correct Answer ✔✔ Moves a system away from its
equilibrium state and make it more unstable
Negative Feedback Loop - Correct Answer ✔✔ A feedback loop that causes a system
to change in the opposite direction from which it is moving
Endocrine System - Correct Answer ✔✔ The system responsible for hormones
Steps in a simple pathway - Correct Answer ✔✔ Reception
Transduction
Response
Steps in a cascade pathway - Correct 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? - Correct 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... - Correct
Answer ✔✔ Insulin and Glucagon
Insulin is - Correct Answer ✔✔ The hormone that lowers blood sugar by having it stored
as glycogen in the liver and increasing cellular uptake.
Glucagon is - Correct Answer ✔✔ A hormone that increases blood sugar levels
Antagonistic hormones are - Correct Answer ✔✔ Two hormones that perform opposite
function to maintain homeostasis
What provided opportunity for land colonization by animals? - Correct Answer ✔✔
Climate was warm and uniform, land was barren rock
What were the challenges of colinizing land? - Correct Answer ✔✔ There was less
water, plants dried out, and there was no support against gravity
What animal phylum was the first to colonize the land? - Correct Answer ✔✔ Sponges
, What are the 5 specialized functions of arthropod "modified" appendages? - Correct
Answer ✔✔ Mating, feeding, sensing, waking, and swimming
What are the functions of rigid arthropod exoskeleton? - Correct Answer ✔✔ Support,
protection, and contributes to efficient locomotion
Specialized gas exchange found in aquatic species - Correct 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 - Correct Answer ✔✔ Tracheal tubes. Help
to increase the surface area and volume area ratio.
Evidence that plants played an important role in insect diversification - Correct 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 ... - Correct Answer ✔✔ Fossil Steroids
Animals 560 mya - Correct Answer ✔✔ Were represented by a single community
Name of the fossils from 560 mya - Correct Answer ✔✔ Ediacaran
Two most ancient animal phyla - Correct Answer ✔✔ Sponges and Comb Jellies
What phylum are sponges in? - Correct Answer ✔✔ Porifera
How do Porifera feed? - Correct Answer ✔✔ Tiny pores in their outer walls in which
water is drawn into filter food from the water
Do porifera have tissues? - Correct Answer ✔✔ No
What is the function of choanocytes? - Correct Answer ✔✔ generate flow of water
What is the function of amoebocytes? - Correct Answer ✔✔ travel around distributing
food and oxygen to the cells of the epidermis
gastrovascular cavity - Correct Answer ✔✔ primary organ of digestion and circulation
Simple nervous system - Correct Answer ✔✔ includes sensory information, an
integrating center, and effectors.
