Many metabolic pathways are ultimately concerned with ATP; either with the generation of ATP, or with the requirement of ATP for that pathway to function. Why is ATP so important to metabolism?
A. Hydrolysis of ATP is used to drive exergonic reactions
B. Hydrolysis of the bond between adenine and ribose in ATP is commonly used to release energy that can be used to drive other cellular reactions
C. The phosphate groups of ATP are held together by unstable bonds that can be broken to release energy
D. ATP is a protein that serves as the energy currency of cells
C
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Refer to the figure. If the carbon atom of each of the incoming CO2 molecules is labeled with a radioactive isotope of carbon, which organic molecules will be radioactively labeled after one cycle?
A) C only B) B, C, D, and E C) C, D, and E only D) B and C only E) B and D only
In Drosophila melanogaster, the gene for eye color is located on the X chromosome. The allele for red eye color
(Xw+) is dominant over the allele for white eye color (Xw). You examine a vial of 100 flies that are all offspring from a single genetic cross. You find both red-eyed females and white-eyed females as well as both red-eyed males and whiteeyed males. The genotypes of the parents were ____.
a. Xw+Xw+; XwY b. Xw+Xw; XwY c. XwXw; Xw+Y d. Xw+Xw; Xw+Y e. XwXw; XwY
The first haploid cell in the life cycle of a plant is the:
a. zygote b. gamete c. gametophyte plant d. spore e. spore mother cell
A(n) ________ is to bacteria as a ________ is to animal cells
A) retrovirus... virus B) phage... prophage C) prophage... provirus D) RNA virus... DNA virus