When ATP is split into ADP and Pi,
a. the energy is released in the form of heat.
b. the energy is directly transferred to the target molecule by an unknown mechanism.
c. the binding of ADP or Pi to the target molecule allows the energy of ATP hydrolysis to be
transferred to the target molecule.
d. the two remaining phosphates acquire the energy that had been present in the linkage of
three phosphates.
e. the resulting delta G is positive.
C
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Enzymes function to:
A. react with other enzymes to form a product. B. catalyze chemical reactions. C. transport molecules and ions across membranes. D. regulate messages between cells.
Who is more likely to suffer from DMD?
a. boys b. girls
Which one of the following is mismatched?
a. ground tissue?photosynthesis b. vascular tissue?storage c. dermal tissue?covering of plant body d. ground tissue?storage e. vascular tissue?transport
Lethal genes (genes that result in the failure to develop a vital organ or metabolic pathway) are nearly always recessive. Animal breeders who discover a unique trait and selectively breed to increase the occurrence of that trait often encounter a noticeable increase in lethal genes. Why?
A. "Pleiotropy"-the gene that is being selected for this trait may have the second effect of being lethal. B. The lethal recessive gene may be incompletely dominant. C. Spreading the gene among offspring of both sexes will increase the likelihood it will be sex-linked and expressed. D. "Epistasis"-selection for the desired trait may result in "uncovering" the lethal gene. E. The selective-mating of closely related individuals, or inbreeding, increases the chances that two recessive genes will "meet" in offspring.