Blood pressure in veins is lower than that in arteries, and a series of ________ are necessary to prevent backflow of blood
A) one-way valves
B) two- or three-way valves
C) varicose veins
D) tricuspid valves
E) endothelial cells
A
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Which reaction is most likely to have more products than reactants when it reaches equilibrium?
a. DG = -25 kcal/mol
b. DG = -50 kcal/mol c. DG = -75 kcal/mol d. DG = -100 kcal/mol e. They will all have the same ratio of products to reactants regardless of the DG value.
Which statement about mitochondria is true?
a. Mitochondria are surrounded by two membranes b. Mitochondria are less than 1 micrometer in length. c. Mitochondria are able to survive outside the cell. d. Mitochondria have linear DNA chromosomes.
What condition develops when GABA levels in the brain are deficient?
A. epilepsy B. insomnia C. Huntington's disease D. Alzheimer's disease E. Parkinson's disease
The two strands of a DNA double helix can be described as running parallel to each other
__________________ Indicate whether the statement is true or false.