Concept explainers
To determine: The evidence of chordate characteristics in the human embryo.
Introduction: All humans, animals, and birds are chordates. A notochord, a dorsal hollow nerve cord, a postanal tail, and pharynx with slits are some of the common features shared by all the chordates at some stage of their development. Chordates are called so because of the presence of notochord, which provides the chordates skeletal support.
To determine: Whether several chordate organs perform the same functions in humans and amphioxus or not.
Introduction: All humans, animals, and birds are chordates. A notochord, a dorsal hollow nerve cord, a postanal tail, and pharynx with slits are some of the common features shared by all the chordates at some stage of their development. Chordates are called so because of the presence of notochord, which provides the chordates skeletal support.
To explain: The reason for persistence of chordate characteristics in humans.
Introduction: All humans, animals, and birds are chordates. A notochord, a dorsal hollow nerve cord, a postanal tail, and pharynx with slits are some of the common features shared by all the chordates at some stage of their development. Chordates are called so because of the presence of notochord, which provides the chordates skeletal support.

Want to see the full answer?
Check out a sample textbook solution
Chapter 51 Solutions
BIOLOGY LL VERSION + MINDTAP V2.0(2 TER
- 1. Match each vocabulary term to its best descriptor A. affinity B. efficacy C. inert D. mimic E. how drugs move through body F. how drugs bind Kd Bmax Agonist Antagonist Pharmacokinetics Pharmacodynamicsarrow_forward50 mg dose of a drug is given orally to a patient. The bioavailability of the drug is 0.2. What is the volume of distribution of the drug if the plasma concentration is 1 mg/L? Be sure to provide units.arrow_forwardDetermine Kd and Bmax from the following Scatchard plot. Make sure to include units.arrow_forward
- Choose a catecholamine neurotransmitter and describe/draw the components of the synapse important for its signaling including synthesis, packaging into vesicles, receptors, transporters/degradative enzymes. Describe 2 drugs that can act on this system.arrow_forwardThe following figure is from Caterina et al. The capsaicin receptor: a heat activated ion channel in the pain pathway. Nature, 1997. Black boxes indicate capsaicin, white circles indicate resinferatoxin. a) Which has a higher potency? b) Which is has a higher efficacy? c) What is the approximate Kd of capsaicin in uM? (you can round to the nearest power of 10)arrow_forwardWhat is the rate-limiting-step for serotonin synthesis?arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
- Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage LearningBiology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781305073951Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning





