Where a given species of vertebrate lives has dramatically shaped the evolution of respiratory adaptations, particularly since the oxygen concentration in air is approximately 20 times that of the oxygen concentration in water. Per unit area of gas exchange surface, which group of vertebrates can extract the greatest total amount of oxygen from the external medium?
A. fish
B. mammals
C. reptiles
D. amphibians
E. birds
E. birds
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A phosphoanhydride bond
A) is a high-energy bond. B) has a standard free energy of hydrolysis of -7.3 kcal/mol. C) is broken by hydrolysis. D) both choices A and B E) choices A, B, and C
What is the very first hormone your body produced?
A. hCG B. FSH C. testosterone or estrogen D. GnRH
Receptor-mediated endocytosis brings in specific material by engulfing it in vesicles. What factors, either directly or indirectly, are related to this process? Choose all that apply.A) It is a passive process.B) It helps to increase membrane fluidity by helping to transport cholesterol into the cell.C) It is an active process.D) It uses carrier proteins.E) A clathrin coat is present.
What will be an ideal response?
The presence of short hairs on leaves is controlled by dominant allele H. Plants with genotype hh have smooth leaves. Two parental plants with unknown genotype were crossed. What are the parental genotypes if F1= 0 Hairy and 24 smooth?
a. HH x hh b. Hh x hh c. Hh x Hh d. hh x hh e. HH x HH