The force that blood exerts on artery walls is termed _____ pressure.
A. venous
B. gravitational
C. blood
D. osmotic
E. pulmonary
C. blood
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Choose the true statements about the evolution of complex characters, such as powered flight.
_____ Phylogenetic analysis using cladistics can help reveal the sequence leading to the evolution of a complex character. _____ Usually a single mutation in one gene leads to the simultaneous appearance of the complex character. _____ Often the initial stage in the evolution of a complex character was an adaptation to some unrelated selection pressure. _____ The intermediate stages in the evolution of a complex character had no fitness advantage.
Based on these crosses, how many different eye color genes are mutant in all of these strains collectively?
A) 1 B) 2 C) 3 D) 4 E) 8
7. Identify the largest distinction between the theory of spontaneous generation and the cell theory.
A. Spontaneous generation can be observed with the microscope, while cell theory is newer and has not yet been proven. B. Spontaneous generation is found in organisms that don't have cells, while cell theory happens in organisms that do have cells. C. Spontaneous generation only happens with animalcules and germs, while cell theory applies to other, more complex organisms. D. Spontaneous generation proposes life can form from available molecule components, while the cell theory explains how all cells are formed from preexisting cells. E. There is no distinct difference between the two theories.
Animal cells typically achieve cytokinesis by:
A. forming a cell plate across the middle of the cell. B. chromosome condensation. C. chromosome elongation. D. binary fission. E. forming a cleavage furrow that pinches the cell into two.