Ectotherms - Study guides, Class notes & Summaries

BIO 100 Exam 3 Review Questions – ASU with Complete Solutions **Compare and contrast the roles of positive and negative feedback in maintaining homeostasis. Use these concepts to explain:** a. **Regulating blood glucose levels:** Negative feedback – the pancreas produces insulin to lower high blood sugar levels. b. **Formation of blood clots:** Positive feedback – initial platelets bind to the injury site, attracting more platelets to the area. **What does it mean for an organi...

Agonist - Competitive inhibition, binds to active site and causes a signal response in receptive tissue. Antagonist (blocker) - Competitive inhibitor, binds to active site so signal molecules cannot bind but causes no response in receptive tissue, can bind and release eventually. Apply your understanding of channels and synapses to predict how various neurotoxins affect nervous function. - Neurotoxins block receptor proteins on the post-synaptic neuron. Example: tetrodotoxin form Fugu fish...

A ____ is a shared, derived trait that only occurs in a certain _____ group. - Synapomorphy Monophyletic A law is a _____ ______. - Universal relationship According to natural selection, characteristics are ______. Certain characteristics increase ______, the ability to produce offspring. Certain individuals are better ______, hence natural selection. - Heritable Fitness Adapted Archaea is composed of what type of chain and bond? - Isoprene chain Esther bond Are bacteria and archaea un...

Gametes sex cells Gene Combination of alleles Allele Piece of a gene ATP energy amino acids proteins Starch Sugar Endotherms warm blooded Ectotherms cold blooded Radiation Energy transmitted without contact between objects (usually in rays, waves, or particles) Convection Energy transferred through fluids Conduction energy transferred by direct contact of two objects Osmosis Water moves to equalize concentration

what is a biological community? - Answer All of the populations of organisms living and interacting in a particular area commensalism - Answer interaction where one species benefits and the other is unaffected competition - Answer interaction where individuals use the same resources, lowering fitness for both -/- consumption - Answer interaction where one organism eats or absorbs nutrients from the other, +/- mutualism - Answer interaction where two species benefit +/+ three key t...

Which neuronal zone initiates neural electrical activity? (Chapter 2) A. Input Zone B. Integration Zone C. Conduction Zone D. Output Zone b Which of the following describes a synapse at which a presynaptic axon terminal synapses onto the cell body of the postsynaptic neuron? (Chapter 3) A. Axo-Somatic Synapse B. Axo-Axonic C. Dendro-Dendritic D. Axo-Dendritic a Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:00...

Arizona State University BIO 100 (Oberlin) Exam 3 Study Guide Rated A+ Compare and contrast the use of positive and negative feedback mechanisms in maintaining homeostasis. Illustrate these concepts with: • The regulation of blood glucose levels • The release of platelets to form blood clots. Negative feedback counteracts changes to maintain stability. For instance, when blood glucose levels rise, the pancreas secretes insulin, prompting the liver to absorb the excess glucose. Conve...

what is a biological community? - Answer All of the populations of organisms living and interacting in a particular area commensalism - Answer interaction where one species benefits and the other is unaffected competition - Answer interaction where individuals use the same resources, lowering fitness for both -/- consumption - Answer interaction where one organism eats or absorbs nutrients from the other, +/- mutualism - Answer interaction where two species benefit +/+ three key t...

PNB 2250 EXAM 2 PRACTICE QUESTIONS AND ANSWERS What are examples of thermal adaptation? (adapting to change in temp) (E2) - Ans:--Expression of alternative protein forms. -The presence of heat exchangers in the legs of ducks -Changes in gene transcription. -Previous exposure to elevated temperature What is not a part of thermal adaptation? (E2) - Ans:-A fever in response to an infection When elephant seals dive to a great depth...(E2) - Ans:-they don't breath (they DO NOT left shift) ...

Acclimatization - Short-term, reversible adjustment to lessen the effect of an environmental change and associated stress. Can be physiological, morphological, or behavioral Adaptation - Any heritable trait (genetic) that enhances the survival and reproduction of an organism under a given set of environmental conditions. Can be physiological, morphological, or behavioral Aquatic Biological Zones - Precipitation is less important and temperatures fluctuate much less seasonally. Not based on...