Balance
The maintenance of relatively stable internal conditions despite changes is called_________.
homeostasis
True or False: Selection acts on existing heritable variation, favoring variants suited to current conditions.
True
Blood glucose is also known as Blood _____.
Sugar
Differences in characteristics among individuals in a population.
Variation
Preserved remains, impressions, or traces of organisms from the past that provide evidence of evolutionary change
Fossils
A feedback mechanism that amplifies/increases an initial change until a specific endpoint is reached.
Positive feedback
The differential survival and reproduction of individuals with heritable variations is called _______ _________.
Natural selection
A feedback mechanism that produces a response that opposes a change from a set range.
Negative feedback
True or False: Geographic Isolation contributes to formation of new species by allowing separated populations to diverge.
True
What bird-like structure did Archaeopteryx possess that helped it fly?
Feathers
What are the 2 types of mechanisms of homeostasis?
negative feedback and positive feedback
A heritable trait that increases survival or reproductive success in a particular environment.
Adaptation
During labor, stretching of the cervix stimulates oxytocin release, which strengthens contractions and causes more stretching. What feedback mechanism is this?
Positive Feedback
Transmission of genetic information from parents to offspring.
Heredity
The study of similarities and differences in the body structures of different organisms.
Comparative Morphology
After a meal, a student's blood glucose rises and later returns near its usual level. What is the explanation for this?
Regulatory processes have restored the glucose level toward its normal range
Released insulin to regulate blood glucose level.
What famous fossil is considered a transitional form between dinosaurs and modern birds?
Archaeopteryx
A patient's temperature was recorded as 36.8 C at 8:00 a.m., 37.0 C at noon, 38.9 C at 4:00 p.m., and 39.2 C at 8:00 p.m. Which time period/interval provides the evidence that temperature regulation is no longer normal?
4:00 p.m. to 8:00 p.m.
What are the 5 Key Concepts of Evolution?
Heredity, Variation, Selection, Isolation, & Adaptation
The geographic distribution of organisms and its relationship to ancestry and Earth history.
Biogeography
What are the 3 indicators of homeostasis?
body temperature, blood glucose level, blood pressure
A structure in different organisms that has a similar underlying anatomy but may perform different functions.
Homologous structures
A stimulus is something that causes a response.
Which of the following is a stimulus?
1. temperature rises 2.receptors send signals to the brain 3.sweating and dilation of skin blood vessels
1. temperature rises
Structures that have similar functions but evolved independently and have different underlying anatomical origins.
Analogous structures
What group of four-limbed animals includes amphibians, reptiles, birds, and mammals?
Tetrapods