What is the difference between the two atoms in the accompanying figure?
a. Their electrical charge
b. The number of electrons
c. The number of protons
d. The number of neutrons
e. The number of valence shells
d
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Answer the following statements true (T) or false (F)
1. Mutated p53 genes are found in more than half of all human cancer tumor cells. 2. Through examining the function and form of FtsZ and tubulin proteins, biologists can find evolutionary links between prokaryotes and eukaryotes. 3. An advantage of asexual reproduction is that it takes less time and energy than sexual reproduction. 4. After the crossover event in meiosis I, the recombinant sister chromatid is genetically identical to its parents. 5. The nuclei resulting from a mitotic division are genetically different from the original.
Which of the following contributes to an erythrocyte's efficiency in distributing oxygen?
a. presence of mitochondria b. biconcave shape c. lobed nuclei d. granules e. extraordinarily large size
Which of these provides your body with energy?
a. minerals b. fats c. oxygen d. vitamins e. light
Ethylene oxide is
A. a halogen. B. sporicidal. C. used as an antiseptic against anaerobes. D. the active agent in household bleach. E. only effective with high heat.